Bug Summary

File:nnc/./_ccv_nnc_stream.h
Warning:line 61, column 1
Array access (via field 'flags') results in a null pointer dereference

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name ccv_nnc_dynamic_graph.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +sse2 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/home/liu/actions-runner/_work/ccv/ccv/lib/nnc -fcoverage-compilation-dir=/home/liu/actions-runner/_work/ccv/ccv/lib/nnc -resource-dir /usr/local/lib/clang/19 -I ../ -I /usr/local/cuda/include -D HAVE_CBLAS -D HAVE_LIBPNG -D HAVE_LIBJPEG -D HAVE_FFTW3 -D HAVE_PTHREAD -D HAVE_LIBLINEAR -D HAVE_TESSERACT -D HAVE_AVCODEC -D HAVE_AVFORMAT -D HAVE_AVUTIL -D HAVE_SWSCALE -D HAVE_SSE2 -D HAVE_GSL -D HAVE_CUDA -D HAVE_CUDNN -D HAVE_NCCL -D USE_SYSTEM_CUB -I /usr/local/include -internal-isystem /usr/local/lib/clang/19/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/liu/actions-runner/_work/ccv/ccv/_analyze/2025-09-28-145715-25778-1 -x c ccv_nnc_dynamic_graph.c

ccv_nnc_dynamic_graph.c

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1#include "ccv_nnc.h"
2#include "ccv_nnc_easy.h"
3#include "ccv_nnc_internal.h"
4#include "ccv_nnc_easy.h"
5#include "ccv_internal.h"
6#include "_ccv_nnc_dynamic_graph.h"
7
8// MARK - Level-4 API
9
10ccv_nnc_dynamic_graph_t* ccv_nnc_dynamic_graph_new(void)
11{
12 ccv_nnc_dynamic_graph_t* graph = ccmallocmalloc(sizeof(ccv_nnc_dynamic_graph_t));
13 graph->no_grad = 0;
14 graph->reuse_var = -1;
15 graph->vars = ccv_array_new(sizeof(ccv_nnc_tensor_variable_t), 1, 0);
16 graph->binds = ccv_array_new(sizeof(ccv_nnc_tensor_variable_graph_bind_t), 1, 0);
17 graph->tape = ccv_nnc_symbolic_graph_new();
18 graph->xpu_alloc.mp_hdr = -1;
19 graph->xpu_alloc.freed = kh_init(dy_str)kh_init_dy_str();
20 graph->xpu_alloc.allocd = kh_init(dy_alloc)kh_init_dy_alloc();
21 // These may not be used as frequent, init as needed.
22 graph->stateful_execs = 0;
23 graph->reuse_stateful_exec = -1;
24 graph->stream_map = 0;
25 graph->ws = 0;
26 return graph;
27}
28
29static void _ccv_nnc_tensor_variable_free(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, const int zeroing)
30{
31 const int index = tensor_variable->index;
32 if (tensor_variable->tensor_view)
33 {
34 if (tensor_variable->destructor_hook.func)
35 tensor_variable->destructor_hook.func(graph, (ccv_nnc_tensor_t*)tensor_variable->tensor_view, tensor_variable->destructor_hook.context);
36 if (!CCV_NNC_IS_EXTERN_TENSOR_VIEW(tensor_variable->tensor_view)((uintptr_t)(tensor_variable->tensor_view) & 1))
37 {
38 if (CCV_IS_TENSOR_VIEW(tensor_variable->tensor_view)((*(int*)(tensor_variable->tensor_view)) & CCV_TENSOR_VIEW
))
39 ccv_nnc_tensor_view_free(tensor_variable->tensor_view);
40 else {
41 if (!tensor_variable->alias_index_ref && // Return this memory to the graph.
42 CCV_TENSOR_GET_MEMORY(tensor_variable->tensor_view->info.type)((tensor_variable->tensor_view->info.type) & 0x3) == CCV_TENSOR_GPU_MEMORY && tensor_variable->tensor_view->data.u8)
43 ccv_nnc_xpu_free(&graph->xpu_alloc, tensor_variable->tensor_view->data.u8);
44 ccv_nnc_tensor_free((ccv_nnc_tensor_t*)tensor_variable->tensor_view);
45 }
46 }
47 }
48 ccfreefree(tensor_variable);
49 if (zeroing)
50 *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(index))) = 0;
51 int i;
52 for (i = graph->vars->rnum - 1; i >= 0; i--)
53 if (*(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, i)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(i))) != 0)
54 {
55 graph->vars->rnum = i + 1;
56 break;
57 }
58 if (index < graph->vars->rnum &&
59 (index < graph->reuse_var || graph->reuse_var < 0))
60 graph->reuse_var = index;
61 else if (graph->reuse_var >= graph->vars->rnum)
62 graph->reuse_var = -1;
63}
64
65static void _ccv_nnc_tensor_variable_graph_bind_free(ccv_nnc_dynamic_graph_t* const graph, ccv_nnc_tensor_variable_graph_bind_t* const bind, const int zeroing)
66{
67 bind->index = CCV_NNC_TENSOR_NO_VARIABLE;
68 if (bind->sources)
69 ccv_array_free(bind->sources);
70 if (bind->destinations)
71 ccv_array_free(bind->destinations);
72 if (bind->tensor_view)
73 {
74 if (bind->destructor_hook.func)
75 bind->destructor_hook.func(graph, (ccv_nnc_tensor_t*)bind->tensor_view, bind->destructor_hook.context);
76 if (!CCV_NNC_IS_EXTERN_TENSOR_VIEW(bind->tensor_view)((uintptr_t)(bind->tensor_view) & 1))
77 {
78 if (CCV_IS_TENSOR_VIEW(bind->tensor_view)((*(int*)(bind->tensor_view)) & CCV_TENSOR_VIEW))
79 ccv_nnc_tensor_view_free(bind->tensor_view);
80 else {
81 if (!bind->alias_ref && // Return this memory to the graph.
82 CCV_TENSOR_GET_MEMORY(bind->tensor_view->info.type)((bind->tensor_view->info.type) & 0x3) == CCV_TENSOR_GPU_MEMORY && bind->tensor_view->data.u8)
83 ccv_nnc_xpu_free(&graph->xpu_alloc, bind->tensor_view->data.u8);
84 ccv_nnc_tensor_free((ccv_nnc_tensor_t*)bind->tensor_view);
85 }
86 }
87 }
88 if (zeroing)
89 {
90 bind->sources = 0;
91 bind->destinations = 0;
92 bind->tensor_view = 0;
93 bind->destructor_hook.func = 0;
94 bind->destructor_hook.context = 0;
95 }
96}
97
98void ccv_nnc_dynamic_graph_free(ccv_nnc_dynamic_graph_t* const graph)
99{
100 int i;
101 for (i = 0; i < graph->vars->rnum; i++)
102 {
103 ccv_nnc_tensor_variable_t tensor_variable = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, i)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(i)));
104 if (tensor_variable)
105 _ccv_nnc_tensor_variable_free(graph, tensor_variable, 0);
106 }
107 ccv_array_free(graph->vars);
108 for (i = 0; i < graph->binds->rnum; i++)
109 _ccv_nnc_tensor_variable_graph_bind_free(graph, (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, i)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(i))), 0);
110 ccv_array_free(graph->binds);
111 ccv_nnc_symbolic_graph_free(graph->tape);
112 if (graph->ws)
113 ccv_array_free(graph->ws);
114 if (graph->stateful_execs)
115 {
116 for (i = 0; i < graph->stateful_execs->rnum; i++)
117 {
118 ccv_nnc_stateful_exec_t* const stateful_exec = *(ccv_nnc_stateful_exec_t**)ccv_array_get(graph->stateful_execs, i)((void*)(((char*)((graph->stateful_execs)->data)) + (size_t
)(graph->stateful_execs)->rsize * (size_t)(i)));
119 if (stateful_exec)
120 ccfreefree(stateful_exec);
121 }
122 ccv_array_free(graph->stateful_execs);
123 }
124 if (graph->stream_map)
125 {
126 khiter_t k;
127 for (k = kh_begin(graph->stream_map)(khint_t)(0); k != kh_end(graph->stream_map)((graph->stream_map)->n_buckets); ++k)
128 {
129 if (!kh_exist(graph->stream_map, k)(!(((graph->stream_map)->flags[(k)>>4]>>(((
k)&0xfU)<<1))&3)))
130 continue;
131 ccv_nnc_stream_context_t* const stream = kh_val(graph->stream_map, k)((graph->stream_map)->vals[k]);
132 ccv_nnc_stream_context_free(stream);
133 }
134 kh_destroy(stream_map, graph->stream_map)kh_destroy_stream_map(graph->stream_map);
135 }
136 ccv_nnc_xpu_alloc_destroy(&graph->xpu_alloc);
137 ccfreefree(graph);
138}
139
140void ccv_nnc_tensor_variable_set(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, ccv_nnc_tensor_t* const tensor)
141{
142 assert(!tensor_variable->alias_index_ref)((void) sizeof ((!tensor_variable->alias_index_ref) ? 1 : 0
), __extension__ ({ if (!tensor_variable->alias_index_ref)
; else __assert_fail ("!tensor_variable->alias_index_ref"
, "ccv_nnc_dynamic_graph.c", 142, __extension__ __PRETTY_FUNCTION__
); }));
143 if (tensor_variable->tensor_view && !CCV_NNC_IS_EXTERN_TENSOR_VIEW(tensor_variable->tensor_view)((uintptr_t)(tensor_variable->tensor_view) & 1))
144 {
145 assert(!CCV_IS_TENSOR_VIEW(tensor_variable->tensor_view))((void) sizeof ((!((*(int*)(tensor_variable->tensor_view))
& CCV_TENSOR_VIEW)) ? 1 : 0), __extension__ ({ if (!((*(
int*)(tensor_variable->tensor_view)) & CCV_TENSOR_VIEW
)) ; else __assert_fail ("!CCV_IS_TENSOR_VIEW(tensor_variable->tensor_view)"
, "ccv_nnc_dynamic_graph.c", 145, __extension__ __PRETTY_FUNCTION__
); }));
146 ccv_nnc_tensor_free((ccv_nnc_tensor_t*)tensor_variable->tensor_view);
147 }
148 tensor_variable->info = tensor->info;
149 tensor_variable->tensor_view = (ccv_nnc_tensor_view_t*)((uintptr_t)tensor | 1);
150}
151
152void ccv_nnc_tensor_variable_destructor_hook(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, ccv_nnc_tensor_variable_destructor_f func, void* const context)
153{
154 tensor_variable->destructor_hook.func = func;
155 tensor_variable->destructor_hook.context = context;
156}
157
158inline static void _ccv_nnc_tensor_variable_init(ccv_nnc_dynamic_graph_t* const graph, ccv_nnc_tensor_variable_t tensor_variable, const ccv_nnc_tensor_param_t info)
159{
160 tensor_variable->alias_index_ref = 0;
161 tensor_variable->alias_off = 0;
162 tensor_variable->destructor_hook.func = 0;
163 tensor_variable->destructor_hook.context = 0;
164 tensor_variable->info = info;
165 tensor_variable->symbol = NO_TENSOR_SYMBOL(const ccv_nnc_tensor_symbol_t){.d = CCV_NNC_NO_TENSOR_SYMBOL
};
166 tensor_variable->tensor_view = 0;
167 if (graph->reuse_var >= 0)
168 {
169 const int reuse_var = graph->reuse_var;
170 assert(reuse_var < graph->vars->rnum)((void) sizeof ((reuse_var < graph->vars->rnum) ? 1 :
0), __extension__ ({ if (reuse_var < graph->vars->rnum
) ; else __assert_fail ("reuse_var < graph->vars->rnum"
, "ccv_nnc_dynamic_graph.c", 170, __extension__ __PRETTY_FUNCTION__
); }));
171 tensor_variable->index = reuse_var;
172 *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, reuse_var)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(reuse_var))) = tensor_variable;
173 int i;
174 graph->reuse_var = -1;
175 for (i = reuse_var + 1; i < graph->vars->rnum && graph->reuse_var < 0; i++)
176 if (*(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, i)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(i))) == 0)
177 graph->reuse_var = i;
178 } else {
179 tensor_variable->index = graph->vars->rnum;
180 ccv_array_push(graph->vars, &tensor_variable);
181 }
182}
183
184ccv_nnc_tensor_variable_t ccv_nnc_tensor_variable_new_impl(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_param_t info)
185{
186 ccv_nnc_tensor_variable_t tensor_variable = ccmallocmalloc(sizeof(struct ccv_nnc_tensor_variable_s));
187 tensor_variable->type = CCV_NNC_TENSOR_VARIABLE;
188 _ccv_nnc_tensor_variable_init(graph, tensor_variable, info);
189 return tensor_variable;
190}
191
192ccv_nnc_tensor_variable_t ccv_nnc_tensor_constant_new_impl(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_param_t info)
193{
194 ccv_nnc_tensor_variable_t tensor_variable = ccmallocmalloc(sizeof(struct ccv_nnc_tensor_variable_s));
195 tensor_variable->type = CCV_NNC_TENSOR_CONSTANT;
196 _ccv_nnc_tensor_variable_init(graph, tensor_variable, info);
197 return tensor_variable;
198}
199
200int ccv_nnc_tensor_variable_is_constant(const ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable)
201{
202 return tensor_variable->type == CCV_NNC_TENSOR_CONSTANT;
203}
204
205ccv_nnc_tensor_param_t ccv_nnc_tensor_variable_params(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable)
206{
207 return tensor_variable->info;
208}
209
210ccv_nnc_tensor_variable_t ccv_nnc_tensor_variable_alias_new(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, const int ofs[CCV_NNC_MAX_DIM_ALLOC(12)], const int stride[CCV_NNC_MAX_DIM_ALLOC(12)], const ccv_nnc_tensor_param_t info)
211{
212 ccv_nnc_tensor_variable_t variable_alias = ccmallocmalloc(sizeof(struct ccv_nnc_tensor_variable_s));
213 variable_alias->type = tensor_variable->type;
214 // If the tensor variable is an alias itself, we point directly to its original.
215 if (tensor_variable->alias_index_ref)
216 {
217 variable_alias->alias_index_ref = tensor_variable->alias_index_ref;
218 // The tensor variable need to be fully specified if I am doing alias an alias.
219 assert(!ccv_nnc_is_tensor_auto(tensor_variable->info))((void) sizeof ((!ccv_nnc_is_tensor_auto(tensor_variable->
info)) ? 1 : 0), __extension__ ({ if (!ccv_nnc_is_tensor_auto
(tensor_variable->info)) ; else __assert_fail ("!ccv_nnc_is_tensor_auto(tensor_variable->info)"
, "ccv_nnc_dynamic_graph.c", 219, __extension__ __PRETTY_FUNCTION__
); }));
220 int i;
221 int no_stride = 1;
222 for (i = 0; no_stride && i < CCV_NNC_MAX_DIM_ALLOC(12); i++)
223 no_stride = (tensor_variable->stride[i] == 0);
224 int stride_from_dim[CCV_NNC_MAX_DIM_ALLOC(12)];
225 int* to_stride;
226 if (no_stride)
227 {
228 ccv_nnc_tensor_get_stride(tensor_variable->info.dim, stride_from_dim);
229 to_stride = stride_from_dim;
230 } else
231 to_stride = tensor_variable->stride;
232 // If we provide stride, or reshape to a different size, assert the tensor variable itself is contiguous (otherwise we cannot satisfy the reshape requirements).
233 const int different_dim = ccv_nnc_tensor_nd(info.dim) != ccv_nnc_tensor_nd(tensor_variable->info.dim);
234 if (different_dim || (stride[0] != 0 && memcmp(stride, to_stride, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12)) != 0))
235 { assert(ccv_nnc_tensor_view_is_contiguous(tensor_variable->info.dim, to_stride))((void) sizeof ((ccv_nnc_tensor_view_is_contiguous(tensor_variable
->info.dim, to_stride)) ? 1 : 0), __extension__ ({ if (ccv_nnc_tensor_view_is_contiguous
(tensor_variable->info.dim, to_stride)) ; else __assert_fail
("ccv_nnc_tensor_view_is_contiguous(tensor_variable->info.dim, to_stride)"
, "ccv_nnc_dynamic_graph.c", 235, __extension__ __PRETTY_FUNCTION__
); })); }
236 // Need to compute alias off, that is the alias off of the tensor variable plus its ofs.
237 const off_t off = ccv_nnc_tensor_view_offset(tensor_variable->info.datatype, to_stride, tensor_variable->ofs);
238 variable_alias->alias_off = tensor_variable->alias_off + off;
239 // If we don't provide stride, copy the stride from previous variable.
240 if (stride[0] == 0)
241 {
242 if (different_dim)
243 ccv_nnc_tensor_get_stride(info.dim, variable_alias->stride);
244 else
245 memcpy(variable_alias->stride, to_stride, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12));
246 } else
247 memcpy(variable_alias->stride, stride, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12));
248 } else {
249 variable_alias->alias_index_ref = tensor_variable->index + 1;
250 variable_alias->alias_off = 0;
251 memcpy(variable_alias->stride, stride, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12));
252 }
253 variable_alias->info = info;
254 variable_alias->symbol = NO_TENSOR_SYMBOL(const ccv_nnc_tensor_symbol_t){.d = CCV_NNC_NO_TENSOR_SYMBOL
};
255 variable_alias->destructor_hook.func = 0;
256 variable_alias->destructor_hook.context = 0;
257 variable_alias->tensor_view = 0;
258 memcpy(variable_alias->ofs, ofs, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12));
259 if (graph->reuse_var >= 0)
260 {
261 const int reuse_var = graph->reuse_var;
262 assert(reuse_var < graph->vars->rnum)((void) sizeof ((reuse_var < graph->vars->rnum) ? 1 :
0), __extension__ ({ if (reuse_var < graph->vars->rnum
) ; else __assert_fail ("reuse_var < graph->vars->rnum"
, "ccv_nnc_dynamic_graph.c", 262, __extension__ __PRETTY_FUNCTION__
); }));
263 variable_alias->index = reuse_var;
264 *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, reuse_var)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(reuse_var))) = variable_alias;
265 int i;
266 graph->reuse_var = -1;
267 for (i = reuse_var + 1; i < graph->vars->rnum && graph->reuse_var < 0; i++)
268 if (*(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, i)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(i))) == 0)
269 graph->reuse_var = i;
270 } else {
271 variable_alias->index = graph->vars->rnum;
272 ccv_array_push(graph->vars, &variable_alias);
273 }
274 return variable_alias;
275}
276
277int ccv_nnc_tensor_variable_alias_params(const ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, int ofs[CCV_NNC_MAX_DIM_ALLOC(12)], int stride[CCV_NNC_MAX_DIM_ALLOC(12)])
278{
279 if (!tensor_variable->alias_index_ref)
280 return -1;
281 if (ofs)
282 memcpy(ofs, tensor_variable->ofs, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12));
283 if (stride)
284 memcpy(stride, tensor_variable->stride, sizeof(int) * CCV_NNC_MAX_DIM_ALLOC(12));
285 return 0;
286}
287
288ccv_nnc_tensor_t* ccv_nnc_tensor_from_variable_impl(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, ccv_nnc_stream_context_t* const stream_context)
289{
290 if (tensor_variable->tensor_view)
291 {
292 if (tensor_variable->alias_index_ref)
293 {
294 const int alias_index = tensor_variable->alias_index_ref - 1;
295 assert(alias_index >= 0)((void) sizeof ((alias_index >= 0) ? 1 : 0), __extension__
({ if (alias_index >= 0) ; else __assert_fail ("alias_index >= 0"
, "ccv_nnc_dynamic_graph.c", 295, __extension__ __PRETTY_FUNCTION__
); }));
296 ccv_nnc_tensor_variable_t variable_to = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, alias_index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(alias_index)));
297 if (CCV_IS_TENSOR_VIEW(tensor_variable->tensor_view)((*(int*)(tensor_variable->tensor_view)) & CCV_TENSOR_VIEW
))
298 {
299 ccv_nnc_tensor_view_t* const tv = tensor_variable->tensor_view;
300 // We cannot have an alias with custom set tensor, otherwise the pointer update is invalid.
301 assert(!CCV_NNC_IS_EXTERN_TENSOR_VIEW(tv))((void) sizeof ((!((uintptr_t)(tv) & 1)) ? 1 : 0), __extension__
({ if (!((uintptr_t)(tv) & 1)) ; else __assert_fail ("!CCV_NNC_IS_EXTERN_TENSOR_VIEW(tv)"
, "ccv_nnc_dynamic_graph.c", 301, __extension__ __PRETTY_FUNCTION__
); }));
302 // Update the tensor_view pointer every time access it, because the underlying variable it alias to have changed.
303 ccv_nnc_tensor_data(CCV_NNC_TENSOR_VIEW(variable_to->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(variable_to->tensor_view
) & ~(uintptr_t)1))->info, CCV_NNC_TENSOR_VIEW(variable_to->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(variable_to->tensor_view
) & ~(uintptr_t)1))->data.u8, tv->off + tensor_variable->alias_off, &tv->data, &tv->dataof);
304 } else {
305 ccv_nnc_tensor_t* const tv = (ccv_nnc_tensor_t*)tensor_variable->tensor_view;
306 // We cannot have an alias with custom set tensor, otherwise the pointer update is invalid.
307 assert(!CCV_NNC_IS_EXTERN_TENSOR_VIEW(tv))((void) sizeof ((!((uintptr_t)(tv) & 1)) ? 1 : 0), __extension__
({ if (!((uintptr_t)(tv) & 1)) ; else __assert_fail ("!CCV_NNC_IS_EXTERN_TENSOR_VIEW(tv)"
, "ccv_nnc_dynamic_graph.c", 307, __extension__ __PRETTY_FUNCTION__
); }));
308 // Update the tensor_view pointer every time access it, because the underlying variable it alias to have changed.
309 ccv_nnc_tensor_data(CCV_NNC_TENSOR_VIEW(variable_to->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(variable_to->tensor_view
) & ~(uintptr_t)1))->info, CCV_NNC_TENSOR_VIEW(variable_to->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(variable_to->tensor_view
) & ~(uintptr_t)1))->data.u8, tensor_variable->alias_off, &tv->data, &tv->dataof);
310 }
311 }
312 return (ccv_nnc_tensor_t*)CCV_NNC_TENSOR_VIEW(tensor_variable->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(tensor_variable->tensor_view
) & ~(uintptr_t)1));
313 }
314 if (!tensor_variable->alias_index_ref)
315 {
316 // If we haven't allocated tensor_variable, we cannot allocate them now (because no shape specified), return 0.
317 if (ccv_nnc_is_tensor_auto(tensor_variable->info))
318 return 0;
319 void* ptr = 0;
320 const size_t data_size = ccv_nnc_tensor_data_size(tensor_variable->info);
321 if (CCV_TENSOR_GET_MEMORY(tensor_variable->info.type)((tensor_variable->info.type) & 0x3) == CCV_TENSOR_GPU_MEMORY && data_size > 0)
322 ptr = ccv_nnc_xpu_alloc(&graph->xpu_alloc, CCV_TENSOR_GET_DEVICE_ID(tensor_variable->info.type)(((tensor_variable->info.type) & 0xfff00) >> 8), stream_context, data_size);
323 tensor_variable->tensor_view = (ccv_nnc_tensor_view_t*)ccv_nnc_tensor_new(ptr, tensor_variable->info, 0);
324 if (tensor_variable->info.dim[0] > 0)
325 { assert(tensor_variable->tensor_view->data.u8)((void) sizeof ((tensor_variable->tensor_view->data.u8)
? 1 : 0), __extension__ ({ if (tensor_variable->tensor_view
->data.u8) ; else __assert_fail ("tensor_variable->tensor_view->data.u8"
, "ccv_nnc_dynamic_graph.c", 325, __extension__ __PRETTY_FUNCTION__
); })); }
326 return (ccv_nnc_tensor_t*)tensor_variable->tensor_view;
327 }
328 const int alias_index = tensor_variable->alias_index_ref - 1;
329 assert(alias_index >= 0)((void) sizeof ((alias_index >= 0) ? 1 : 0), __extension__
({ if (alias_index >= 0) ; else __assert_fail ("alias_index >= 0"
, "ccv_nnc_dynamic_graph.c", 329, __extension__ __PRETTY_FUNCTION__
); }));
330 ccv_nnc_tensor_variable_t variable_to = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, alias_index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(alias_index)));
331 assert(!variable_to->alias_index_ref)((void) sizeof ((!variable_to->alias_index_ref) ? 1 : 0), __extension__
({ if (!variable_to->alias_index_ref) ; else __assert_fail
("!variable_to->alias_index_ref", "ccv_nnc_dynamic_graph.c"
, 331, __extension__ __PRETTY_FUNCTION__); }));
332 if (!variable_to->tensor_view)
333 {
334 // If we haven't allocated variable_to, we cannot allocate them now (because no shape specified), return 0.
335 if (ccv_nnc_is_tensor_auto(variable_to->info))
336 return 0;
337 void* ptr = 0;
338 assert(variable_to->info.type == tensor_variable->info.type)((void) sizeof ((variable_to->info.type == tensor_variable
->info.type) ? 1 : 0), __extension__ ({ if (variable_to->
info.type == tensor_variable->info.type) ; else __assert_fail
("variable_to->info.type == tensor_variable->info.type"
, "ccv_nnc_dynamic_graph.c", 338, __extension__ __PRETTY_FUNCTION__
); }));
339 const size_t data_size = ccv_nnc_tensor_data_size(variable_to->info);
340 if (CCV_TENSOR_GET_MEMORY(variable_to->info.type)((variable_to->info.type) & 0x3) == CCV_TENSOR_GPU_MEMORY && data_size > 0)
341 ptr = ccv_nnc_xpu_alloc(&graph->xpu_alloc, CCV_TENSOR_GET_DEVICE_ID(variable_to->info.type)(((variable_to->info.type) & 0xfff00) >> 8), stream_context, data_size);
342 variable_to->tensor_view = (ccv_nnc_tensor_view_t*)ccv_nnc_tensor_new(ptr, variable_to->info, 0);
343 assert(variable_to->tensor_view->data.u8)((void) sizeof ((variable_to->tensor_view->data.u8) ? 1
: 0), __extension__ ({ if (variable_to->tensor_view->data
.u8) ; else __assert_fail ("variable_to->tensor_view->data.u8"
, "ccv_nnc_dynamic_graph.c", 343, __extension__ __PRETTY_FUNCTION__
); }));
344 }
345 int i;
346 int no_ofs = 1;
347 for (i = 0; no_ofs && i < CCV_NNC_MAX_DIM_ALLOC(12); i++)
348 no_ofs = (tensor_variable->ofs[i] == 0);
349 int no_stride = 1;
350 for (i = 0; no_stride && i < CCV_NNC_MAX_DIM_ALLOC(12); i++)
351 no_stride = (tensor_variable->stride[i] == 0);
352 int stride_is_packed = no_stride;
353 if (!no_stride) // We have stride, now if it is packed.
354 stride_is_packed = ccv_nnc_is_tensor_stride_packed(tensor_variable->stride, tensor_variable->info.dim);
355 assert(CCV_GET_DATA_TYPE_SIZE(tensor_variable->info.datatype) * ccv_nnc_tensor_count(tensor_variable->info) + tensor_variable->alias_off <= CCV_GET_DATA_TYPE_SIZE(variable_to->info.datatype) * ccv_nnc_tensor_count(variable_to->info))((void) sizeof ((_ccv_get_data_type_size[((tensor_variable->
info.datatype) & 0xFF000) >> 12] * ccv_nnc_tensor_count
(tensor_variable->info) + tensor_variable->alias_off <=
_ccv_get_data_type_size[((variable_to->info.datatype) &
0xFF000) >> 12] * ccv_nnc_tensor_count(variable_to->
info)) ? 1 : 0), __extension__ ({ if (_ccv_get_data_type_size
[((tensor_variable->info.datatype) & 0xFF000) >>
12] * ccv_nnc_tensor_count(tensor_variable->info) + tensor_variable
->alias_off <= _ccv_get_data_type_size[((variable_to->
info.datatype) & 0xFF000) >> 12] * ccv_nnc_tensor_count
(variable_to->info)) ; else __assert_fail ("CCV_GET_DATA_TYPE_SIZE(tensor_variable->info.datatype) * ccv_nnc_tensor_count(tensor_variable->info) + tensor_variable->alias_off <= CCV_GET_DATA_TYPE_SIZE(variable_to->info.datatype) * ccv_nnc_tensor_count(variable_to->info)"
, "ccv_nnc_dynamic_graph.c", 355, __extension__ __PRETTY_FUNCTION__
); }));
356 // Allowing vector type to be normal tensor, rather than a tensor view. We cannot have any offset though.
357 if (no_ofs && !stride_is_packed)
358 stride_is_packed = ccv_nnc_tensor_view_is_contiguous(tensor_variable->info.dim, tensor_variable->stride);
359 if (no_ofs && stride_is_packed)
360 tensor_variable->tensor_view = (ccv_nnc_tensor_view_t*)ccv_nnc_tensor_new(CCV_NNC_TENSOR_VIEW(variable_to->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(variable_to->tensor_view
) & ~(uintptr_t)1))->data.u8, tensor_variable->info, 0);
361 else {
362 if (no_stride)
363 ccv_nnc_tensor_get_stride(tensor_variable->info.dim, tensor_variable->stride);
364 tensor_variable->tensor_view = ccv_nnc_tensor_view_new((ccv_nnc_tensor_t*)CCV_NNC_TENSOR_VIEW(variable_to->tensor_view)((ccv_nnc_tensor_view_t*)((uintptr_t)(variable_to->tensor_view
) & ~(uintptr_t)1)), tensor_variable->info, tensor_variable->ofs, tensor_variable->stride);
365 }
366 if (tensor_variable->alias_off)
367 ccv_nnc_tensor_data_add(tensor_variable->tensor_view->info, tensor_variable->alias_off, &tensor_variable->tensor_view->data, &tensor_variable->tensor_view->dataof);
368 return (ccv_nnc_tensor_t*)tensor_variable->tensor_view;
369}
370
371static void _ccv_nnc_tensor_symbol_extra_new(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, const ccv_nnc_tensor_symbol_t symbol)
372{
373 if (symbol.d >= graph->binds->rnum)
374 {
375 const int rnum = graph->binds->rnum;
376 ccv_array_resize(graph->binds, symbol.d + 1);
377 int i;
378 for (i = rnum; i < graph->binds->rnum; i++)
379 ((ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, i)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(i))))->index = CCV_NNC_TENSOR_NO_VARIABLE;
380 }
381 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(symbol.d)));
382 bind->type = tensor_variable->type;
383 bind->index = tensor_variable->index;
384 if (tensor_variable->alias_index_ref)
385 {
386 const ccv_nnc_tensor_symbol_t alias_to = ccv_nnc_tensor_symbol_alias_to(graph->tape, (ccv_nnc_tensor_symbol_t){
387 .d = symbol.d,
388 .graph = graph->tape
389 });
390 assert(alias_to.d >= 0 && alias_to.d < graph->binds->rnum)((void) sizeof ((alias_to.d >= 0 && alias_to.d <
graph->binds->rnum) ? 1 : 0), __extension__ ({ if (alias_to
.d >= 0 && alias_to.d < graph->binds->rnum
) ; else __assert_fail ("alias_to.d >= 0 && alias_to.d < graph->binds->rnum"
, "ccv_nnc_dynamic_graph.c", 390, __extension__ __PRETTY_FUNCTION__
); }));
391 bind->alias_ref = alias_to.d + 1;
392 } else
393 bind->alias_ref = 0;
394 if (bind->sources)
395 ccv_array_free(bind->sources);
396 bind->sources = 0;
397 if (bind->destinations)
398 ccv_array_free(bind->destinations);
399 bind->destinations = 0;
400 bind->destructor_hook.func = 0;
401 bind->destructor_hook.context = 0;
402 bind->tensor_view = 0;
403}
404
405static ccv_nnc_tensor_symbol_t _ccv_nnc_tensor_symbol_from_variable(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable)
406{
407 if (tensor_variable->symbol.d >= 0)
408 return tensor_variable->symbol;
409 if (!tensor_variable->alias_index_ref)
410 {
411 const ccv_nnc_tensor_symbol_t symbol = tensor_variable->symbol = ccv_nnc_tensor_symbol_new(graph->tape, tensor_variable->info, 0);
412 _ccv_nnc_tensor_symbol_extra_new(graph, tensor_variable, symbol);
413 return symbol;
414 }
415 const int alias_index = tensor_variable->alias_index_ref - 1;
416 assert(alias_index >= 0)((void) sizeof ((alias_index >= 0) ? 1 : 0), __extension__
({ if (alias_index >= 0) ; else __assert_fail ("alias_index >= 0"
, "ccv_nnc_dynamic_graph.c", 416, __extension__ __PRETTY_FUNCTION__
); }));
417 ccv_nnc_tensor_variable_t variable_to = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, alias_index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(alias_index)));
418 assert(!variable_to->alias_index_ref)((void) sizeof ((!variable_to->alias_index_ref) ? 1 : 0), __extension__
({ if (!variable_to->alias_index_ref) ; else __assert_fail
("!variable_to->alias_index_ref", "ccv_nnc_dynamic_graph.c"
, 418, __extension__ __PRETTY_FUNCTION__); }));
419 int no_stride = 1;
420 int i;
421 for (i = 0; no_stride && i < CCV_NNC_MAX_DIM_ALLOC(12); i++)
422 no_stride = (tensor_variable->stride[i] == 0);
423 if (no_stride)
424 ccv_nnc_tensor_get_stride(tensor_variable->info.dim, tensor_variable->stride);
425 const ccv_nnc_tensor_symbol_t symbol = tensor_variable->symbol = ccv_nnc_tensor_symbol_alias_new(graph->tape, _ccv_nnc_tensor_symbol_from_variable(graph, variable_to), tensor_variable->ofs, tensor_variable->stride, tensor_variable->info, 0);
426 _ccv_nnc_tensor_symbol_extra_new(graph, tensor_variable, symbol);
427 return symbol;
428}
429
430// Return the tensor variable that is old (the provided tensor variable will have a new setting).
431ccv_nnc_tensor_variable_t ccv_nnc_tensor_variable_exchange_new(ccv_nnc_dynamic_graph_t* const graph, ccv_nnc_tensor_variable_t tensor_variable)
432{
433 struct ccv_nnc_tensor_variable_s x = *tensor_variable;
434 ccv_nnc_tensor_variable_t new_variable;
435 // Need to handle alias.
436 if (x.alias_index_ref)
437 new_variable = ccv_nnc_tensor_variable_alias_new(graph, *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, x.alias_index_ref - 1)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(x.alias_index_ref - 1))), x.ofs, x.stride, x.info);
438 else
439 new_variable = ccv_nnc_tensor_variable_new(graph, x.info)ccv_nnc_tensor_variable_new_impl(graph, x.info);
440 *tensor_variable = *new_variable;
441 *new_variable = x;
442 // The index should be the same though.
443 const int index = new_variable->index;
444 new_variable->index = tensor_variable->index;
445 if (new_variable->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL)
446 {
447 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, new_variable->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(new_variable->symbol.d)));
448 bind->index = new_variable->index;
449 }
450 tensor_variable->index = index;
451 return new_variable;
452}
453
454void ccv_nnc_dynamic_graph_set_max_concurrency(ccv_nnc_dynamic_graph_t* const dynamic_graph, const int max_stream_count)
455{
456 dynamic_graph->max_stream_count = max_stream_count;
457}
458
459int ccv_nnc_dynamic_graph_set_no_grad(ccv_nnc_dynamic_graph_t* const dynamic_graph, const int no_grad)
460{
461 if (dynamic_graph->no_grad == no_grad)
462 return -1;
463 dynamic_graph->no_grad = no_grad;
464 return 0;
465}
466
467static ccv_nnc_stream_context_t* _ccv_nnc_dynamic_graph_get_stream(ccv_nnc_dynamic_graph_t* const graph, const int type)
468{
469 if (!graph->stream_map)
42
←
Assuming field 'stream_map' is null
→
43
←
Taking true branch
→
470 graph->stream_map = kh_init(stream_map)kh_init_stream_map();
44
←
Calling 'kh_init_stream_map'
→
46
←
Returning from 'kh_init_stream_map'
→
471 int ret = 0;
472 khiter_t k = kh_put(stream_map, graph->stream_map, type, &ret)kh_put_stream_map(graph->stream_map, type, &ret);
47
←
Calling 'kh_put_stream_map'
→
473 assert(ret >= 0)((void) sizeof ((ret >= 0) ? 1 : 0), __extension__ ({ if (
ret >= 0) ; else __assert_fail ("ret >= 0", "ccv_nnc_dynamic_graph.c"
, 473, __extension__ __PRETTY_FUNCTION__); }));
474 ccv_nnc_stream_context_t* stream = kh_val(graph->stream_map, k)((graph->stream_map)->vals[k]);
475 // If ret == 0, the key already exist, we can return directly, otherwise, create and return.
476 if (ret != 0)
477 {
478 stream = ccv_nnc_stream_context_new(type);
479 kh_val(graph->stream_map, k)((graph->stream_map)->vals[k]) = stream;
480 }
481 return stream;
482}
483
484typedef struct {
485 ccv_nnc_dynamic_graph_t* graph;
486 int stream_type;
487} ccv_nnc_dynamic_graph_neighbor_context_discovery_t;
488
489static ccv_nnc_stream_context_t* _ccv_nnc_dynamic_graph_neighbor_context_discovery(const int device_id, void* const context)
490{
491 ccv_nnc_dynamic_graph_neighbor_context_discovery_t* const discovery = (ccv_nnc_dynamic_graph_neighbor_context_discovery_t*)context;
492 int type = discovery->stream_type;
493 CCV_STREAM_SET_DEVICE_ID(type, device_id)(type) = (((type) & ~0xfff00) | (((device_id) & 0xfff
) << 8));
494 return _ccv_nnc_dynamic_graph_get_stream(discovery->graph, type);
495}
496
497void ccv_nnc_dynamic_graph_exec_ret(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_cmd_t cmd, const ccv_nnc_hint_t hint, const int flags, const ccv_nnc_tensor_variable_t* const inputs, const int input_size, ccv_nnc_tensor_variable_t* const outputs, const int output_size, const int parallel, ccv_nnc_stream_context_t* const stream_context, ccv_nnc_graph_exec_symbol_t* const graph_execs)
498{
499 int i, j;
500 for (i = 0; i < input_size; i++)
1
Assuming 'i' is >= 'input_size'
→
2
←
Loop condition is false. Execution continues on line 503
→
501 if (inputs[i] && !inputs[i]->alias_index_ref)
502 { assert(inputs[i]->tensor_view)((void) sizeof ((inputs[i]->tensor_view) ? 1 : 0), __extension__
({ if (inputs[i]->tensor_view) ; else __assert_fail ("inputs[i]->tensor_view"
, "ccv_nnc_dynamic_graph.c", 502, __extension__ __PRETTY_FUNCTION__
); })); }
503 ccv_nnc_tensor_t* input_tensors[ccv_max(1, input_size)({ typeof (1) _a = (1); typeof (input_size) _b = (input_size)
; (_a > _b) ? _a : _b; })];
3
←
'?' condition is true
→
504 for (i = 0; i
3.1
'i' is >= 'input_size'
3.1
'i' is >= 'input_size'
 < input_size; i++)
4
←
Loop condition is false. Execution continues on line 506
→
505 input_tensors[i] = inputs[i] ? ccv_nnc_tensor_from_variable(graph, inputs[i], stream_context)ccv_nnc_tensor_from_variable_impl(graph, inputs[i], stream_context
) : 0;
506 ccv_nnc_tensor_symbol_t input_symbols[ccv_max(1, input_size)({ typeof (1) _a = (1); typeof (input_size) _b = (input_size)
; (_a > _b) ? _a : _b; })];
5
←
'?' condition is true
→
507 for (i = 0; i
5.1
'i' is >= 'input_size'
5.1
'i' is >= 'input_size'
 < input_size; i++)
6
←
Loop condition is false. Execution continues on line 509
→
508 input_symbols[i] = inputs[i] ? _ccv_nnc_tensor_symbol_from_variable(graph, inputs[i]) : NO_TENSOR_SYMBOL(const ccv_nnc_tensor_symbol_t){.d = CCV_NNC_NO_TENSOR_SYMBOL
};
509 ccv_array_t* input_sources[ccv_max(1, input_size)({ typeof (1) _a = (1); typeof (input_size) _b = (input_size)
; (_a > _b) ? _a : _b; })];
7
←
'?' condition is true
→
510 ccv_array_t* input_alias_sources[ccv_max(1, input_size)({ typeof (1) _a = (1); typeof (input_size) _b = (input_size)
; (_a > _b) ? _a : _b; })];
8
←
'?' condition is true
→
511 for (i = 0; i
8.1
'i' is >= 'input_size'
8.1
'i' is >= 'input_size'
 < input_size; i++)
9
←
Loop condition is false. Execution continues on line 523
→
512 {
513 input_sources[i] = input_symbols[i].d != CCV_NNC_NO_TENSOR_SYMBOL ? ((ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, input_symbols[i].d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(input_symbols[i].d))))->sources : 0;
514 if (inputs[i] && inputs[i]->alias_index_ref)
515 {
516 const int alias_index_ref = inputs[i]->alias_index_ref - 1;
517 assert(alias_index_ref >= 0)((void) sizeof ((alias_index_ref >= 0) ? 1 : 0), __extension__
({ if (alias_index_ref >= 0) ; else __assert_fail ("alias_index_ref >= 0"
, "ccv_nnc_dynamic_graph.c", 517, __extension__ __PRETTY_FUNCTION__
); }));
518 ccv_nnc_tensor_variable_t variable_to = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, alias_index_ref)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(alias_index_ref)));
519 input_alias_sources[i] = ((ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, variable_to->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(variable_to->symbol.d))))->sources;
520 } else
521 input_alias_sources[i] = 0;
522 }
523 const int parallel_count = ccv_max(1, parallel)({ typeof (1) _a = (1); typeof (parallel) _b = (parallel); (_a
> _b) ? _a : _b; });
10
←
Assuming '_a' is <= '_b'
→
11
←
'?' condition is false
→
524 assert(input_size % parallel_count == 0)((void) sizeof ((input_size % parallel_count == 0) ? 1 : 0), __extension__
({ if (input_size % parallel_count == 0) ; else __assert_fail
("input_size % parallel_count == 0", "ccv_nnc_dynamic_graph.c"
, 524, __extension__ __PRETTY_FUNCTION__); }));
12
←
Assuming the condition is true
→
13
←
Taking true branch
→
525 const int per_input_size = input_size / parallel_count;
526 assert(output_size % parallel_count == 0)((void) sizeof ((output_size % parallel_count == 0) ? 1 : 0),
__extension__ ({ if (output_size % parallel_count == 0) ; else
__assert_fail ("output_size % parallel_count == 0", "ccv_nnc_dynamic_graph.c"
, 526, __extension__ __PRETTY_FUNCTION__); }));
14
←
Assuming the condition is true
→
15
←
Taking true branch
→
527 const int per_output_size = output_size / parallel_count;
528 int output_auto = 0;
529 for (i = 0; !output_auto
15.1
'output_auto' is 0
15.1
'output_auto' is 0
 && i < output_size; i++)
16
←
Assuming 'i' is >= 'output_size'
→
17
←
Loop condition is false. Execution continues on line 532
→
530 output_auto = outputs[i] ? ccv_nnc_is_tensor_auto(outputs[i]->info) : 0;
531 // One extra step, infer the parameters for outputs.
532 if (output_auto
17.1
'output_auto' is 0
17.1
'output_auto' is 0
)
18
←
Taking false branch
→
533 {
534 ccv_nnc_tensor_param_t input_params[ccv_max(1, per_input_size)({ typeof (1) _a = (1); typeof (per_input_size) _b = (per_input_size
); (_a > _b) ? _a : _b; })];
535 ccv_nnc_tensor_param_t output_params[ccv_max(1, per_output_size)({ typeof (1) _a = (1); typeof (per_output_size) _b = (per_output_size
); (_a > _b) ? _a : _b; })];
536 for (i = 0; i < parallel_count; i++)
537 {
538 for (j = 0; j < per_input_size; j++)
539 input_params[j] = inputs[j + i * per_input_size] ? inputs[j + i * per_input_size]->info : ccv_nnc_tensor_auto;
540 for (j = 0; j < per_output_size; j++)
541 output_params[j] = outputs[j + i * per_output_size] ? outputs[j + i * per_output_size]->info : ccv_nnc_tensor_auto;
542 ccv_nnc_hint_tensor_auto(cmd, input_params, per_input_size, hint, output_params, per_output_size);
543 for (j = 0; j < per_output_size; j++)
544 if (outputs[j + i * per_output_size])
545 outputs[j + i * per_output_size]->info = output_params[j];
546 }
547 }
548 int freeable_size = 0;
549 ccv_nnc_tensor_variable_t freeables[ccv_max(1, output_size)({ typeof (1) _a = (1); typeof (output_size) _b = (output_size
); (_a > _b) ? _a : _b; })];
19
←
'?' condition is true
→
550 // Refresh the symbol if it is binded to an existing exec. Otherwise we cannot keep the SSA guarantee.
551 for (i = 0; i
19.1
'i' is >= 'output_size'
19.1
'i' is >= 'output_size'
 < output_size; i++)
20
←
Loop condition is false. Execution continues on line 579
→
552 {
553 // First, go over to see whether there is enforce inplace.
554 int enforce_idx = -1;
555 for (j = 0; enforce_idx < 0 && j < input_size; j++)
556 if (inputs[j] && ccv_nnc_cmd_enforce_inplace(cmd, j, input_size, i, output_size))
557 enforce_idx = j;
558 if (enforce_idx >= 0)
559 { assert(outputs[i] == inputs[enforce_idx] && outputs[i]->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL)((void) sizeof ((outputs[i] == inputs[enforce_idx] &&
outputs[i]->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL) ? 1 : 0
), __extension__ ({ if (outputs[i] == inputs[enforce_idx] &&
outputs[i]->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL) ; else __assert_fail
("outputs[i] == inputs[enforce_idx] && outputs[i]->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL"
, "ccv_nnc_dynamic_graph.c", 559, __extension__ __PRETTY_FUNCTION__
); })); }
560 // We don't allow or check "allow inplace" yet. That logic will be at odds with backward logic.
561 if (outputs[i] && outputs[i]->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL)
562 {
563 const ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, outputs[i]->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(outputs[i]->symbol.d)));
564 if (enforce_idx >= 0)
565 { assert(!bind->destinations || bind->destinations->rnum == 0)((void) sizeof ((!bind->destinations || bind->destinations
->rnum == 0) ? 1 : 0), __extension__ ({ if (!bind->destinations
|| bind->destinations->rnum == 0) ; else __assert_fail
("!bind->destinations || bind->destinations->rnum == 0"
, "ccv_nnc_dynamic_graph.c", 565, __extension__ __PRETTY_FUNCTION__
); })); }
566 if (bind->sources && bind->sources->rnum > 0)
567 {
568 const ccv_nnc_tensor_variable_t old_var = freeables[freeable_size++] = ccv_nnc_tensor_variable_exchange_new(graph, outputs[i]);
569 // If this is enforce output, make sure the tensor view is taken by the output.
570 if (enforce_idx >= 0)
571 {
572 outputs[i]->destructor_hook = old_var->destructor_hook;
573 outputs[i]->tensor_view = old_var->tensor_view; // Make sure the tensor view is taken over by the output.
574 old_var->tensor_view = 0;
575 }
576 }
577 }
578 }
579 ccv_nnc_tensor_t* output_tensors[ccv_max(1, per_output_size)({ typeof (1) _a = (1); typeof (per_output_size) _b = (per_output_size
); (_a > _b) ? _a : _b; })];
21
←
Assuming '_a' is <= '_b'
→
22
←
'?' condition is false
→
580 if (parallel_count > 1)
23
←
Assuming 'parallel_count' is > 1
→
24
←
Taking true branch
→
581 {
582 const int max_device_id_size = per_input_size + per_output_size;
583 assert(max_device_id_size > 0)((void) sizeof ((max_device_id_size > 0) ? 1 : 0), __extension__
({ if (max_device_id_size > 0) ; else __assert_fail ("max_device_id_size > 0"
, "ccv_nnc_dynamic_graph.c", 583, __extension__ __PRETTY_FUNCTION__
); }));
25
←
Assuming 'max_device_id_size' is > 0
→
26
←
Taking true branch
→
584 int device_ids[max_device_id_size];
585 ccv_nnc_stream_context_t* streams[parallel_count];
586 ccv_nnc_stream_signal_t* signal;
587 if (stream_context)
27
←
Assuming 'stream_context' is null
→
28
←
Taking false branch
→
588 signal = ccv_nnc_stream_context_emit_signal_new(stream_context);
589 for (i = 0; i
28.1
'i' is < 'parallel_count'
28.1
'i' is < 'parallel_count'
 < parallel_count; i++)
29
←
Loop condition is true. Entering loop body
→
590 {
591 int flag = 0;
592 for (j = 0; !flag
29.1
'flag' is 0
29.1
'flag' is 0
 && j < per_input_size; j++)
30
←
Assuming 'j' is >= 'per_input_size'
→
31
←
Loop condition is false. Execution continues on line 595
→
593 if (input_tensors[i * per_input_size + j])
594 flag = (CCV_TENSOR_GET_MEMORY(input_tensors[i * per_input_size + j]->info.type)((input_tensors[i * per_input_size + j]->info.type) & 0x3
) == CCV_TENSOR_GPU_MEMORY);
595 for (j = 0; j
31.1
'j' is < 'per_output_size'
31.1
'j' is < 'per_output_size'
 < per_output_size; j++)
35
←
Assuming 'j' is >= 'per_output_size'
→
596 {
597 output_tensors[j] = outputs[j + i * per_output_size] ? ccv_nnc_tensor_from_variable(graph, outputs[j + i * per_output_size], stream_context)ccv_nnc_tensor_from_variable_impl(graph, outputs[j + i * per_output_size
], stream_context) : 0;
32
←
Loop condition is true. Entering loop body
→
33
←
Assuming the condition is false
→
34
←
'?' condition is false
→
598 if (output_tensors[j] && !flag)
599 flag = (CCV_TENSOR_GET_MEMORY(output_tensors[j]->info.type)((output_tensors[j]->info.type) & 0x3) == CCV_TENSOR_GPU_MEMORY);
600 }
601 const int stream_type = flag
36.1
'flag' is 0
36.1
'flag' is 0
 ? CCV_STREAM_CONTEXT_GPU : CCV_STREAM_CONTEXT_CPU;
36
←
Loop condition is false. Execution continues on line 601
→
37
←
'?' condition is false
→
602 const int tensor_type = flag
37.1
'flag' is 0
37.1
'flag' is 0
 ? CCV_TENSOR_GPU_MEMORY : CCV_TENSOR_CPU_MEMORY;
38
←
'?' condition is false
→
603 const int device_id_size = ccv_nnc_device_ids_for_io(input_tensors + i * per_input_size, per_input_size, output_tensors, per_output_size, tensor_type, device_ids, max_device_id_size);
604 ccv_nnc_stream_context_t* stream_0 = 0;
605 for (j = 0; j < device_id_size; j++)
39
←
Assuming 'j' is < 'device_id_size'
→
40
←
Loop condition is true. Entering loop body
→
606 {
607 int type = stream_type;
608 CCV_STREAM_SET_DEVICE_ID(type, device_ids[j])(type) = (((type) & ~0xfff00) | (((device_ids[j]) & 0xfff
) << 8));
609 ccv_nnc_stream_context_t* const stream = _ccv_nnc_dynamic_graph_get_stream(graph, type);
41
←
Calling '_ccv_nnc_dynamic_graph_get_stream'
→
610 if (!stream_0)
611 stream_0 = stream;
612 }
613 // Wait signal to finish.
614 if (stream_context)
615 {
616 if (stream_0)
617 ccv_nnc_stream_context_wait_signal(stream_0, signal);
618 else
619 ccv_nnc_stream_context_wait(stream_context);
620 }
621 if (stream_0)
622 {
623 ccv_nnc_dynamic_graph_neighbor_context_discovery_t discovery = {
624 .graph = graph,
625 .stream_type = stream_type
626 };
627 ccv_nnc_stream_context_set_neighbor_discovery(stream_0, _ccv_nnc_dynamic_graph_neighbor_context_discovery, &discovery);
628 }
629 PRINT(CCV_CLI_INFO, "%s: [%d] -> [%d]\n", ccv_nnc_cmd_name(cmd.cmd), per_input_size, per_output_size)do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("%s: [%d] -> [%d]\n", ccv_nnc_cmd_name(cmd.cmd), per_input_size
, per_output_size); fflush(stdout); } } while (0);
630 int k;
631 for (k = 0; k < per_input_size; k++)
632 {
633 PRINT(CCV_CLI_INFO, "|-> %d. %p (%p:%d)", k + 1, input_tensors[k + i * per_input_size], (input_tensors[k + i * per_input_size] ? input_tensors[k + i * per_input_size]->data.u8 : 0), (input_tensors[k + i * per_input_size] ? CCV_TENSOR_GET_DEVICE_ID(input_tensors[k + i * per_input_size]->info.type) : -1))do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("|-> %d. %p (%p:%d)", k + 1, input_tensors[k + i * per_input_size
], (input_tensors[k + i * per_input_size] ? input_tensors[k +
i * per_input_size]->data.u8 : 0), (input_tensors[k + i *
per_input_size] ? (((input_tensors[k + i * per_input_size]->
info.type) & 0xfff00) >> 8) : -1)); fflush(stdout);
} } while (0);
634 if (input_tensors[k + i * per_input_size] && CCV_CLI_OUTPUT_LEVEL_IS(CCV_CLI_INFO)(CCV_CLI_INFO & ccv_cli_get_output_levels()))
635 ccv_nnc_print_tensor_info(input_tensors[k + i * per_input_size]);
636 PRINT(CCV_CLI_INFO, "\n")do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("\n"); fflush(stdout); } } while (0);
637 }
638 for (k = 0; k < per_output_size; k++)
639 {
640 PRINT(CCV_CLI_INFO, "|<- %d. %p (%p:%d)", k + 1, output_tensors[k], (output_tensors[k] ? output_tensors[k]->data.u8 : 0), (output_tensors[k] ? CCV_TENSOR_GET_DEVICE_ID(output_tensors[k]->info.type) : -1))do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("|<- %d. %p (%p:%d)", k + 1, output_tensors[k], (output_tensors
[k] ? output_tensors[k]->data.u8 : 0), (output_tensors[k] ?
(((output_tensors[k]->info.type) & 0xfff00) >> 8
) : -1)); fflush(stdout); } } while (0);
641 if (output_tensors[k] && CCV_CLI_OUTPUT_LEVEL_IS(CCV_CLI_INFO)(CCV_CLI_INFO & ccv_cli_get_output_levels()))
642 ccv_nnc_print_tensor_shape(output_tensors[k]);
643 PRINT(CCV_CLI_INFO, "\n")do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("\n"); fflush(stdout); } } while (0);
644 }
645 const int status = ccv_nnc_cmd_exec(cmd, hint, flags, input_tensors + i * per_input_size, per_input_size, output_tensors, per_output_size, stream_0);
646 if (status != 0)
647 PRINT(CCV_CLI_INFO, "Invalid Status: %d\n", status)do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("Invalid Status: %d\n", status); fflush(stdout); } } while (
0);
648 if (CCV_CLI_OUTPUT_LEVEL_IS(CCV_CLI_VERBOSE)(CCV_CLI_VERBOSE & ccv_cli_get_output_levels()))
649 {
650 for (k = 0; k < per_output_size; k++)
651 {
652 PRINT(CCV_CLI_VERBOSE, "POST: |<- %d. %p (%p:%d)", k + 1, output_tensors[k], (output_tensors[k] ? output_tensors[k]->data.u8 : 0), (output_tensors[k] ? CCV_TENSOR_GET_DEVICE_ID(output_tensors[k]->info.type) : -1))do { if ((CCV_CLI_VERBOSE & ccv_cli_get_output_levels()))
{ printf("POST: |<- %d. %p (%p:%d)", k + 1, output_tensors
[k], (output_tensors[k] ? output_tensors[k]->data.u8 : 0),
(output_tensors[k] ? (((output_tensors[k]->info.type) &
0xfff00) >> 8) : -1)); fflush(stdout); } } while (0);
653 if (output_tensors[k])
654 ccv_nnc_print_tensor_info(output_tensors[k]);
655 PRINT(CCV_CLI_VERBOSE, "\n")do { if ((CCV_CLI_VERBOSE & ccv_cli_get_output_levels()))
{ printf("\n"); fflush(stdout); } } while (0);
656 }
657 }
658 if (stream_context && stream_0)
659 {
660 ccv_nnc_stream_signal_t* const signal = ccv_nnc_stream_context_emit_signal_new(stream_0);
661 ccv_nnc_stream_context_wait_signal(stream_context, signal);
662 }
663 streams[i] = stream_0;
664 }
665 if (!stream_context)
666 for (i = 0; i < parallel_count; i++)
667 if (streams[i])
668 ccv_nnc_stream_context_wait(streams[i]);
669 } else {
670 for (i = 0; i < per_output_size; i++)
671 output_tensors[i] = outputs[i] ? ccv_nnc_tensor_from_variable(graph, outputs[i], stream_context)ccv_nnc_tensor_from_variable_impl(graph, outputs[i], stream_context
) : 0;
672 PRINT(CCV_CLI_INFO, "%s: [%d] -> [%d]\n", ccv_nnc_cmd_name(cmd.cmd), per_input_size, per_output_size)do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("%s: [%d] -> [%d]\n", ccv_nnc_cmd_name(cmd.cmd), per_input_size
, per_output_size); fflush(stdout); } } while (0);
673 for (i = 0; i < per_input_size; i++)
674 {
675 PRINT(CCV_CLI_INFO, "|-> %d. %p (%p:%d)", i + 1, input_tensors[i], (input_tensors[i] ? input_tensors[i]->data.u8 : 0), (input_tensors[i] ? CCV_TENSOR_GET_DEVICE_ID(input_tensors[i]->info.type) : -1))do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("|-> %d. %p (%p:%d)", i + 1, input_tensors[i], (input_tensors
[i] ? input_tensors[i]->data.u8 : 0), (input_tensors[i] ? (
((input_tensors[i]->info.type) & 0xfff00) >> 8) :
-1)); fflush(stdout); } } while (0);
676 if (input_tensors[i] && CCV_CLI_OUTPUT_LEVEL_IS(CCV_CLI_INFO)(CCV_CLI_INFO & ccv_cli_get_output_levels()))
677 ccv_nnc_print_tensor_info(input_tensors[i]);
678 PRINT(CCV_CLI_INFO, "\n")do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("\n"); fflush(stdout); } } while (0);
679 }
680 ccv_nnc_cmd_exec(cmd, hint, flags, input_tensors, per_input_size, output_tensors, per_output_size, stream_context);
681 for (i = 0; i < per_output_size; i++)
682 {
683 PRINT(CCV_CLI_INFO, "|<- %d. %p (%p:%d)", i + 1, output_tensors[i], (output_tensors[i] ? output_tensors[i]->data.u8 : 0), (output_tensors[i] ? CCV_TENSOR_GET_DEVICE_ID(output_tensors[i]->info.type) : -1))do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("|<- %d. %p (%p:%d)", i + 1, output_tensors[i], (output_tensors
[i] ? output_tensors[i]->data.u8 : 0), (output_tensors[i] ?
(((output_tensors[i]->info.type) & 0xfff00) >> 8
) : -1)); fflush(stdout); } } while (0);
684 if (output_tensors[i] && CCV_CLI_OUTPUT_LEVEL_IS(CCV_CLI_INFO)(CCV_CLI_INFO & ccv_cli_get_output_levels()))
685 ccv_nnc_print_tensor_info(output_tensors[i]);
686 PRINT(CCV_CLI_INFO, "\n")do { if ((CCV_CLI_INFO & ccv_cli_get_output_levels())) { printf
("\n"); fflush(stdout); } } while (0);
687 }
688 }
689 int inputs_are_constants = 1;
690 for (i = 0; inputs_are_constants && i < input_size; i++)
691 if (inputs[i] && inputs[i]->type != CCV_NNC_TENSOR_CONSTANT)
692 inputs_are_constants = 0;
693 if (input_size > 0 && !inputs_are_constants && !graph->no_grad) // No need to record the execution if there is no input or we disabled gradient computation.
694 {
695 ccv_nnc_tensor_symbol_t output_symbols[ccv_max(1, output_size)({ typeof (1) _a = (1); typeof (output_size) _b = (output_size
); (_a > _b) ? _a : _b; })];
696 for (i = 0; i < output_size; i++)
697 if (outputs[i])
698 {
699 assert(outputs[i]->type != CCV_NNC_TENSOR_CONSTANT)((void) sizeof ((outputs[i]->type != CCV_NNC_TENSOR_CONSTANT
) ? 1 : 0), __extension__ ({ if (outputs[i]->type != CCV_NNC_TENSOR_CONSTANT
) ; else __assert_fail ("outputs[i]->type != CCV_NNC_TENSOR_CONSTANT"
, "ccv_nnc_dynamic_graph.c", 699, __extension__ __PRETTY_FUNCTION__
); }));
700 output_symbols[i] = _ccv_nnc_tensor_symbol_from_variable(graph, outputs[i]);
701 } else
702 output_symbols[i] = NO_TENSOR_SYMBOL(const ccv_nnc_tensor_symbol_t){.d = CCV_NNC_NO_TENSOR_SYMBOL
};
703 int t;
704 for (t = 0; t < parallel_count; t++)
705 {
706 ccv_nnc_graph_exec_symbol_t graph_exec = ccv_nnc_graph_exec_symbol_new(graph->tape, cmd, input_symbols + t * per_input_size, per_input_size, output_symbols + t * per_output_size, per_output_size, 0);
707 if (graph_execs)
708 graph_execs[t] = graph_exec;
709 // This needs to be done before we set the new sources on the outputs.
710 for (i = 0; i < per_input_size; i++)
711 {
712 ccv_array_t* const input_source = input_sources[i + t * per_input_size];
713 if (input_source)
714 for (j = 0; j < input_source->rnum; j++)
715 ccv_nnc_graph_exec_symbol_concat(graph->tape, (ccv_nnc_graph_exec_symbol_t){
716 .d = *(int*)ccv_array_get(input_source, j)((void*)(((char*)((input_source)->data)) + (size_t)(input_source
)->rsize * (size_t)(j))),
717 .graph = graph->tape
718 }, graph_exec);
719 ccv_array_t* const input_alias_source = input_alias_sources[i + t * per_input_size];
720 if (input_alias_source)
721 for (j = 0; j < input_alias_source->rnum; j++)
722 ccv_nnc_graph_exec_symbol_concat(graph->tape, (ccv_nnc_graph_exec_symbol_t){
723 .d = *(int*)ccv_array_get(input_alias_source, j)((void*)(((char*)((input_alias_source)->data)) + (size_t)(
input_alias_source)->rsize * (size_t)(j))),
724 .graph = graph->tape
725 }, graph_exec);
726 }
727 for (i = 0; i < per_input_size; i++)
728 {
729 ccv_nnc_tensor_variable_t const input = inputs[i + t * per_input_size];
730 if (!input || input->type == CCV_NNC_TENSOR_CONSTANT)
731 continue;
732 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, input_symbols[i + t * per_input_size].d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(input_symbols[i + t * per_input_size
].d)));
733 if (!bind->destinations)
734 bind->destinations = ccv_array_new(sizeof(int), 1, 0);
735 ccv_array_add_unique_int(bind->destinations, graph_exec.d);
736 if (input->alias_index_ref)
737 {
738 const int alias_index = input->alias_index_ref - 1;
739 assert(alias_index >= 0)((void) sizeof ((alias_index >= 0) ? 1 : 0), __extension__
({ if (alias_index >= 0) ; else __assert_fail ("alias_index >= 0"
, "ccv_nnc_dynamic_graph.c", 739, __extension__ __PRETTY_FUNCTION__
); }));
740 ccv_nnc_tensor_variable_t variable_to = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, alias_index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(alias_index)));
741 ccv_nnc_tensor_variable_graph_bind_t* const root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, variable_to->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(variable_to->symbol.d)));
742 if (!root_bind->destinations)
743 root_bind->destinations = ccv_array_new(sizeof(int), 1, 0);
744 ccv_array_add_unique_int(root_bind->destinations, graph_exec.d);
745 }
746 }
747 for (i = 0; i < per_output_size; i++)
748 {
749 ccv_nnc_tensor_variable_t const output = outputs[i + t * per_output_size];
750 if (!output)
751 continue;
752 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, output_symbols[i + t * per_output_size].d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(output_symbols[i + t * per_output_size
].d)));
753 assert(!bind->sources)((void) sizeof ((!bind->sources) ? 1 : 0), __extension__ (
{ if (!bind->sources) ; else __assert_fail ("!bind->sources"
, "ccv_nnc_dynamic_graph.c", 753, __extension__ __PRETTY_FUNCTION__
); })); // This is a new symbol, therefore, no binded sources associated yet.
754 bind->sources = ccv_array_new(sizeof(int), 1, 0);
755 ccv_array_add_unique_int(bind->sources, graph_exec.d);
756 if (output->alias_index_ref)
757 {
758 const int alias_index = output->alias_index_ref - 1;
759 assert(alias_index >= 0)((void) sizeof ((alias_index >= 0) ? 1 : 0), __extension__
({ if (alias_index >= 0) ; else __assert_fail ("alias_index >= 0"
, "ccv_nnc_dynamic_graph.c", 759, __extension__ __PRETTY_FUNCTION__
); }));
760 ccv_nnc_tensor_variable_t variable_to = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, alias_index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(alias_index)));
761 ccv_nnc_tensor_variable_graph_bind_t* const root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, variable_to->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(variable_to->symbol.d)));
762 if (!root_bind->sources)
763 root_bind->sources = ccv_array_new(sizeof(int), 1, 0);
764 ccv_array_add_unique_int(root_bind->sources, graph_exec.d);
765 }
766 }
767 }
768 }
769 // Now, able to free some of the reused outputs.
770 for (i = 0; i < freeable_size; i++)
771 ccv_nnc_tensor_variable_free(graph, freeables[i]);
772}
773
774int ccv_nnc_dynamic_graph_exec(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_cmd_t cmd, const ccv_nnc_hint_t hint, const int flags, const ccv_nnc_tensor_variable_t* const inputs, const int input_size, ccv_nnc_tensor_variable_t* const outputs, const int output_size, const int parallel, ccv_nnc_stream_context_t* const stream_context)
775{
776 ccv_nnc_dynamic_graph_exec_ret(graph, cmd, hint, flags, inputs, input_size, outputs, output_size, parallel, stream_context, 0);
777 return CCV_NNC_EXEC_SUCCESS;
778}
779
780static int _ccv_nnc_tensor_variable_is_only_output(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_graph_bind_t* bind, const int symbol_d)
781{
782 if (bind->alias_ref)
783 bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, bind->alias_ref - 1)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(bind->alias_ref - 1)));
784 if (!bind->sources || bind->sources->rnum == 0)
785 return 1;
786 int i;
787 for (i = 0; i < bind->sources->rnum; i++)
788 {
789 const int exec_symbol_d = *(int*)ccv_array_get(bind->sources, i)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(i)));
790 const ccv_nnc_graph_exec_symbol_t exec_symbol = {
791 .d = exec_symbol_d,
792 .graph = graph->tape
793 };
794 const int* outputs; int output_size;
795 ccv_nnc_graph_exec_symbol_io(graph->tape, exec_symbol, 0, 0, &outputs, &output_size);
796 int j;
797 for (j = 0; j < output_size; j++)
798 if (outputs[j] >= 0 && outputs[j] != symbol_d) // If output is me, it is the only output.
799 {
800 assert(outputs[j] < graph->binds->rnum)((void) sizeof ((outputs[j] < graph->binds->rnum) ? 1
: 0), __extension__ ({ if (outputs[j] < graph->binds->
rnum) ; else __assert_fail ("outputs[j] < graph->binds->rnum"
, "ccv_nnc_dynamic_graph.c", 800, __extension__ __PRETTY_FUNCTION__
); }));
801 const ccv_nnc_tensor_variable_graph_bind_t* other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, outputs[j])((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(outputs[j])));
802 // This is in use and is it not a constant symbol.
803 if (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT)
804 return 0;
805 if (other_bind->alias_ref) // If this is alias, use its original's destinations.
806 other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, other_bind->alias_ref - 1)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(other_bind->alias_ref - 1
)));
807 // The original is in use and is it not a constant symbol.
808 if (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT)
809 return 0;
810 if (other_bind->destinations && other_bind->destinations->rnum > 0)
811 return 0;
812 }
813 }
814 return 1;
815}
816
817static void _ccv_nnc_update_bind_destinations_when_free(ccv_nnc_dynamic_graph_t* const graph, const int freed_exec_symbol_d, ccv_array_t* const binds, ccv_nnc_tensor_variable_graph_bind_t* const bind, const int tensor_index, ccv_array_t* const ws)
818{
819 int i;
820 if (bind->destinations)
821 {
822 int flag = 0;
823 for (i = 0; !flag && i < bind->destinations->rnum; i++)
824 {
825 const int exec_symbol_d = *(int*)ccv_array_get(bind->destinations, i)((void*)(((char*)((bind->destinations)->data)) + (size_t
)(bind->destinations)->rsize * (size_t)(i)));
826 if (exec_symbol_d == freed_exec_symbol_d)
827 {
828 if (i < bind->destinations->rnum - 1)
829 *(int*)ccv_array_get(bind->destinations, i)((void*)(((char*)((bind->destinations)->data)) + (size_t
)(bind->destinations)->rsize * (size_t)(i))) = *(int*)ccv_array_get(bind->destinations, bind->destinations->rnum - 1)((void*)(((char*)((bind->destinations)->data)) + (size_t
)(bind->destinations)->rsize * (size_t)(bind->destinations
->rnum - 1)));
830 --bind->destinations->rnum;
831 flag = 1;
832 }
833 }
834 // This symbol can be freed.
835 if (flag && bind->index == CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED)
836 {
837 ccv_nnc_tensor_variable_graph_bind_t* root_bind = bind;
838 if (bind->alias_ref)
839 {
840 root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(binds, bind->alias_ref - 1)((void*)(((char*)((binds)->data)) + (size_t)(binds)->rsize
* (size_t)(bind->alias_ref - 1)));
841 if (root_bind->index == CCV_NNC_TENSOR_NO_VARIABLE)
842 root_bind = bind;
843 }
844 // If the alias_ref is not freed, we cannot free this, unless it is very clear there is no reference to this any more.
845 // It is possible because exec will be freed already, thus, it is safe to remove this alias out.
846 if (root_bind->index == CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED &&
847 ((!root_bind->sources || root_bind->sources->rnum == 0) || _ccv_nnc_tensor_variable_is_only_output(graph, bind, tensor_index)) &&
848 root_bind->destinations->rnum == 0)
849 {
850 if (root_bind->sources)
851 for (i = 0; i < root_bind->sources->rnum; i++)
852 ccv_array_add_unique_int(ws, *(int*)ccv_array_get(root_bind->sources, i)((void*)(((char*)((root_bind->sources)->data)) + (size_t
)(root_bind->sources)->rsize * (size_t)(i))));
853 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
854 ccv_nnc_tensor_symbol_free(graph->tape, (ccv_nnc_tensor_symbol_t){
855 .d = tensor_index,
856 .graph = graph->tape
857 });
858 } else if (bind->index == CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED && // Handle the case the bind is already freed, and it doesn't have any sources or destinations.
859 bind->alias_ref && (!bind->sources || bind->sources->rnum == 0) && (!bind->destinations || bind->destinations->rnum == 0)) {
860 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
861 ccv_nnc_tensor_symbol_free(graph->tape, (ccv_nnc_tensor_symbol_t){
862 .d = tensor_index,
863 .graph = graph->tape
864 });
865 }
866 }
867 }
868}
869
870static void _ccv_nnc_update_bind_sources_when_free(ccv_nnc_dynamic_graph_t* const graph, const int freed_exec_symbol_d, ccv_array_t* const binds, ccv_nnc_tensor_variable_graph_bind_t* const bind, const int tensor_index, ccv_array_t* const ws)
871{
872 int i;
873 if (bind->sources)
874 {
875 int flag = 0;
876 for (i = 0; !flag && i < bind->sources->rnum; i++)
877 {
878 const int exec_symbol_d = *(int*)ccv_array_get(bind->sources, i)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(i)));
879 if (exec_symbol_d == freed_exec_symbol_d)
880 {
881 if (i < bind->sources->rnum - 1)
882 *(int*)ccv_array_get(bind->sources, i)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(i))) = *(int*)ccv_array_get(bind->sources, bind->sources->rnum - 1)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(bind->sources->rnum -
1)));
883 --bind->sources->rnum;
884 flag = 1;
885 }
886 }
887 if (flag && !bind->alias_ref && bind->index >= 0 && bind->type == CCV_NNC_TENSOR_CONSTANT && // If it is detached (constant but previously has sources). Now can check again.
888 (bind->sources->rnum == 0 || _ccv_nnc_tensor_variable_is_only_output(graph, bind, tensor_index)) &&
889 (!bind->destinations || bind->destinations->rnum == 0))
890 {
891 // If this is constant, set it to be no symbol again.
892 ccv_nnc_tensor_variable_t tv = *(ccv_nnc_tensor_variable_t*)ccv_array_get(graph->vars, bind->index)((void*)(((char*)((graph->vars)->data)) + (size_t)(graph
->vars)->rsize * (size_t)(bind->index)));
893 tv->symbol = NO_TENSOR_SYMBOL(const ccv_nnc_tensor_symbol_t){.d = CCV_NNC_NO_TENSOR_SYMBOL
};
894 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
895 ccv_nnc_tensor_symbol_free(graph->tape, (ccv_nnc_tensor_symbol_t){
896 .d = tensor_index,
897 .graph = graph->tape
898 });
899 } else if (flag && bind->index == CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED) {
900 // This symbol can be freed.
901 ccv_nnc_tensor_variable_graph_bind_t* root_bind = bind;
902 if (bind->alias_ref)
903 {
904 root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(binds, bind->alias_ref - 1)((void*)(((char*)((binds)->data)) + (size_t)(binds)->rsize
* (size_t)(bind->alias_ref - 1)));
905 if (root_bind->index == CCV_NNC_TENSOR_NO_VARIABLE)
906 root_bind = bind;
907 }
908 // If the alias_ref is not freed, we cannot free this, unless it is very clear there is no reference to this any more.
909 // It is possible because exec will be freed already, thus, it is safe to remove this alias out.
910 if (root_bind->index == CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED &&
911 (root_bind->sources->rnum == 0 || _ccv_nnc_tensor_variable_is_only_output(graph, bind, tensor_index)) &&
912 (!root_bind->destinations || root_bind->destinations->rnum == 0))
913 {
914 for (i = 0; i < root_bind->sources->rnum; i++)
915 ccv_array_add_unique_int(ws, *(int*)ccv_array_get(root_bind->sources, i)((void*)(((char*)((root_bind->sources)->data)) + (size_t
)(root_bind->sources)->rsize * (size_t)(i))));
916 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
917 ccv_nnc_tensor_symbol_free(graph->tape, (ccv_nnc_tensor_symbol_t){
918 .d = tensor_index,
919 .graph = graph->tape
920 });
921 } else if (bind->index == CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED && // Handle the case the bind is already freed, and it doesn't have any sources or destinations.
922 bind->alias_ref && (!bind->sources || bind->sources->rnum == 0) && (!bind->destinations || bind->destinations->rnum == 0)) {
923 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
924 ccv_nnc_tensor_symbol_free(graph->tape, (ccv_nnc_tensor_symbol_t){
925 .d = tensor_index,
926 .graph = graph->tape
927 });
928 }
929 }
930 }
931}
932
933static void _ccv_nnc_update_bind_sources_destinations_when_free(ccv_nnc_dynamic_graph_t* const graph, const int freed_exec_symbol_d, ccv_array_t* const binds, const int* const inputs, const int input_size, const int* const outputs, const int output_size, ccv_array_t* const ws)
934{
935 int i;
936 for (i = 0; i < input_size; i++)
937 if (inputs[i] >= 0 && inputs[i] < binds->rnum)
938 {
939 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(binds, inputs[i])((void*)(((char*)((binds)->data)) + (size_t)(binds)->rsize
* (size_t)(inputs[i])));
940 if (bind->index == CCV_NNC_TENSOR_NO_VARIABLE)
941 continue;
942 if (bind->alias_ref)
943 {
944 const int alias_to = bind->alias_ref - 1;
945 ccv_nnc_tensor_variable_graph_bind_t* const root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(binds, alias_to)((void*)(((char*)((binds)->data)) + (size_t)(binds)->rsize
* (size_t)(alias_to)));
946 if (root_bind && root_bind->index != CCV_NNC_TENSOR_NO_VARIABLE)
947 _ccv_nnc_update_bind_destinations_when_free(graph, freed_exec_symbol_d, binds, root_bind, alias_to, ws);
948 }
949 _ccv_nnc_update_bind_destinations_when_free(graph, freed_exec_symbol_d, binds, bind, inputs[i], ws);
950 }
951 // Note that this works because there is no overlap of inputs / outputs. (What about alias?).
952 for (i = 0; i < output_size; i++)
953 if (outputs[i] >= 0 && outputs[i] < binds->rnum)
954 {
955 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(binds, outputs[i])((void*)(((char*)((binds)->data)) + (size_t)(binds)->rsize
* (size_t)(outputs[i])));
956 if (bind->index == CCV_NNC_TENSOR_NO_VARIABLE)
957 continue;
958 if (bind->alias_ref)
959 {
960 const int alias_to = bind->alias_ref - 1;
961 ccv_nnc_tensor_variable_graph_bind_t* const root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(binds, alias_to)((void*)(((char*)((binds)->data)) + (size_t)(binds)->rsize
* (size_t)(alias_to)));
962 if (root_bind && root_bind->index != CCV_NNC_TENSOR_NO_VARIABLE)
963 _ccv_nnc_update_bind_sources_when_free(graph, freed_exec_symbol_d, binds, root_bind, alias_to, ws);
964 }
965 _ccv_nnc_update_bind_sources_when_free(graph, freed_exec_symbol_d, binds, bind, outputs[i], ws);
966 }
967}
968
969static void _ccv_nnc_stateful_exec_free_if_possible(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_graph_exec_symbol_t symbol)
970{
971 if (!graph->stateful_execs)
972 return;
973 assert(symbol.d >= 0)((void) sizeof ((symbol.d >= 0) ? 1 : 0), __extension__ ({
if (symbol.d >= 0) ; else __assert_fail ("symbol.d >= 0"
, "ccv_nnc_dynamic_graph.c", 973, __extension__ __PRETTY_FUNCTION__
); }));
974 ccv_array_t* const stateful_execs = graph->stateful_execs;
975 ccv_nnc_cmd_t cmd = ccv_nnc_graph_exec_symbol_cmd(graph->tape, symbol);
976 ccv_nnc_stateful_exec_t* const stateful_exec = (ccv_nnc_stateful_exec_t*)cmd.data;
977 if (!stateful_exec)
978 return;
979 // If there is no backward, no need to apply gradients.
980 // Otherwise, if we applied gradients, we can free it as well.
981 // We don't free this stateful exec because apply gradients doesn't require any variables alive.
982 if (!stateful_exec->did_backward_but_not_apply_gradients)
983 {
984 const int index = stateful_exec->index;
985 ccfreefree(stateful_exec);
986 if (index < graph->reuse_stateful_exec || graph->reuse_stateful_exec < 0)
987 graph->reuse_stateful_exec = index;
988 *(ccv_nnc_stateful_exec_t**)ccv_array_get(stateful_execs, index)((void*)(((char*)((stateful_execs)->data)) + (size_t)(stateful_execs
)->rsize * (size_t)(index))) = 0;
989 } else
990 stateful_exec->should_free = 1;
991}
992
993static int _ccv_nnc_tensor_bind_trace_forward_to_free(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable, ccv_nnc_tensor_variable_graph_bind_t* const bind, ccv_nnc_tensor_variable_graph_bind_t* const root_bind, int* const ws_start, const int assuming_no_source) // assuming_no_source means we are going to remove sources if possible, thus, it is irrelevant.
994{
995 int can_free_symbol = 0;
996 const int sources_and_is_only_output = (root_bind->sources && root_bind->sources->rnum > 0) && _ccv_nnc_tensor_variable_is_only_output(graph, bind, tensor_variable->symbol.d);
997 if (!root_bind->sources || root_bind->sources->rnum == 0 || sources_and_is_only_output || assuming_no_source)
998 {
999 int i, j;
1000 can_free_symbol = 1; // Assume we can free this symbol.
1001 if (!graph->ws)
1002 graph->ws = ccv_array_new(sizeof(int), root_bind->destinations ? root_bind->destinations->rnum : 0, 0);
1003 ccv_array_t* const ws = graph->ws;
1004 ccv_array_clear(ws);
1005 if (root_bind->destinations)
1006 for (i = 0; i < root_bind->destinations->rnum; i++)
1007 ccv_array_add_unique_int(ws, *(int*)ccv_array_get(root_bind->destinations, i)((void*)(((char*)((root_bind->destinations)->data)) + (
size_t)(root_bind->destinations)->rsize * (size_t)(i))));
1008 const int ws_init_size = ws->rnum;
1009 *ws_start = ws_init_size;
1010 // Add all sources from root_bind, in case it has been freed (during update bind sources / destinations when free.
1011 if (root_bind->sources)
1012 for (i = 0; i < root_bind->sources->rnum; i++)
1013 ccv_array_add_unique_int(ws, *(int*)ccv_array_get(root_bind->sources, i)((void*)(((char*)((root_bind->sources)->data)) + (size_t
)(root_bind->sources)->rsize * (size_t)(i))));
1014 // If we cannot loop over any exec symbols (this is not in use). It is simple to determine whether we want
1015 // to free it or not: if this is an alias and the origin is not freed, we cannot free this symbol.
1016 if (ws_init_size == 0)
1017 can_free_symbol = (!bind->alias_ref || root_bind->index < 0);
1018 // Go through all the exec symbols use this tensor, to see whether they have inputs that has other sources.
1019 for (i = 0; i < ws_init_size; i++)
1020 {
1021 const int exec_symbol_d = *(int*)ccv_array_get(ws, i)((void*)(((char*)((ws)->data)) + (size_t)(ws)->rsize * (
size_t)(i)));
1022 const ccv_nnc_graph_exec_symbol_t symbol = {
1023 .d = exec_symbol_d,
1024 .graph = graph->tape
1025 };
1026 const int* inputs; int input_size;
1027 const int* outputs; int output_size;
1028 ccv_nnc_graph_exec_symbol_io(graph->tape, symbol, &inputs, &input_size, &outputs, &output_size);
1029 int flag = 0; // flag denotes whether there are cases to keep this exec symbol.
1030 if (!root_bind->sources || root_bind->sources->rnum == 0 || assuming_no_source)
1031 {
1032 // If there is no sources, check if other sources can depend on this exec, if they do, we cannot free this.
1033 for (j = 0; !flag && j < input_size; j++)
1034 if (inputs[j] >= 0 && inputs[j] < graph->binds->rnum && inputs[j] != tensor_variable->symbol.d)
1035 {
1036 ccv_nnc_tensor_variable_graph_bind_t* other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, inputs[j])((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(inputs[j])));
1037 if (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT)
1038 flag = 1;
1039 else {
1040 if (other_bind->alias_ref) // If this is alias, use its original's destinations.
1041 other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, other_bind->alias_ref - 1)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(other_bind->alias_ref - 1
)));
1042 flag = (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT) || (other_bind->type != CCV_NNC_TENSOR_CONSTANT && other_bind->sources && other_bind->sources->rnum > 0); // Constant should have no source, or it is detached.
1043 }
1044 }
1045 } else {
1046 // If there are sources, check whether we have outputs or not. If we do, we cannot free this.
1047 for (j = 0; !flag && j < output_size; j++)
1048 if (outputs[j] >= 0 && outputs[j] < graph->binds->rnum)
1049 {
1050 ccv_nnc_tensor_variable_graph_bind_t* other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, outputs[j])((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(outputs[j])));
1051 if (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT)
1052 flag = 1;
1053 else {
1054 if (other_bind->alias_ref) // If this is alias, use its original's destinations.
1055 other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, other_bind->alias_ref - 1)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(other_bind->alias_ref - 1
)));
1056 flag = (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT) || (other_bind->destinations && other_bind->destinations->rnum > 0);
1057 }
1058 }
1059 }
1060 // This exec can be freed if there is no input required or there is no output required.
1061 can_free_symbol = (can_free_symbol && !flag);
1062 if (!flag)
1063 {
1064 // Go over inputs and remove all references from binded destinations.
1065 // and go over outputs remove all references from binded sources.
1066 _ccv_nnc_update_bind_sources_destinations_when_free(graph, exec_symbol_d, graph->binds, inputs, input_size, outputs, output_size, ws);
1067 const int* outgoings; int outgoing_size;
1068 ccv_nnc_graph_exec_symbol_to(graph->tape, symbol, &outgoings, &outgoing_size);
1069 for (j = 0; j < outgoing_size; j++)
1070 ccv_array_add_unique_int(ws, outgoings[j]);
1071 _ccv_nnc_stateful_exec_free_if_possible(graph, symbol);
1072 ccv_nnc_graph_exec_symbol_free(graph->tape, symbol);
1073 }
1074 }
1075 }
1076 return can_free_symbol;
1077}
1078
1079static void _ccv_nnc_tensor_bind_trace_backward_to_free(ccv_nnc_dynamic_graph_t* const graph, ccv_array_t* const ws, const int ws_start)
1080{
1081 int i, j;
1082 // Now, go over the outgoings, if it is removed, add more to it. Note that the ws array can grow while iterating over.
1083 for (i = ws_start; i < ws->rnum; i++)
1084 {
1085 const int exec_symbol_d = *(int*)ccv_array_get(ws, i)((void*)(((char*)((ws)->data)) + (size_t)(ws)->rsize * (
size_t)(i)));
1086 const ccv_nnc_graph_exec_symbol_t symbol = {
1087 .d = exec_symbol_d,
1088 .graph = graph->tape
1089 };
1090 const int* inputs; int input_size;
1091 const int* outputs; int output_size;
1092 ccv_nnc_graph_exec_symbol_io(graph->tape, symbol, &inputs, &input_size, &outputs, &output_size);
1093 int flag = 0;
1094 for (j = 0; !flag && j < input_size; j++)
1095 if (inputs[j] >= 0 && inputs[j] < graph->binds->rnum)
1096 {
1097 ccv_nnc_tensor_variable_graph_bind_t* other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, inputs[j])((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(inputs[j])));
1098 if (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT)
1099 flag = 1;
1100 else {
1101 if (other_bind->alias_ref) // If this is alias, use its original's destinations.
1102 other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, other_bind->alias_ref - 1)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(other_bind->alias_ref - 1
)));
1103 flag = (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT) || (other_bind->type != CCV_NNC_TENSOR_CONSTANT && other_bind->sources && other_bind->sources->rnum > 0);
1104 }
1105 }
1106 if (flag) // If any inputs make free this destination impossible. Check whether all its outputs are done.
1107 {
1108 int output_flag = 0;
1109 for (j = 0; !output_flag && j < output_size; j++)
1110 if (outputs[j] >= 0 && outputs[j] < graph->binds->rnum)
1111 {
1112 ccv_nnc_tensor_variable_graph_bind_t* other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, outputs[j])((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(outputs[j])));
1113 if (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT)
1114 output_flag = 1;
1115 else {
1116 if (other_bind->alias_ref) // If this is alias, use its original's destinations.
1117 other_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, other_bind->alias_ref - 1)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(other_bind->alias_ref - 1
)));
1118 output_flag = (other_bind->index >= 0 && other_bind->type != CCV_NNC_TENSOR_CONSTANT) || (other_bind->destinations && other_bind->destinations->rnum > 0);
1119 }
1120 }
1121 if (!output_flag) // If no output is used (used means it has a tensor variable, or it has a destination).
1122 flag = 0;
1123 }
1124 // Went over all the inputs, it turns out no more inputs has other references, safe to remove.
1125 if (!flag)
1126 {
1127 _ccv_nnc_update_bind_sources_destinations_when_free(graph, exec_symbol_d, graph->binds, inputs, input_size, outputs, output_size, ws);
1128 const int* outgoings; int outgoing_size;
1129 ccv_nnc_graph_exec_symbol_to(graph->tape, symbol, &outgoings, &outgoing_size);
1130 // It it has outgoings, add that for further inspection.
1131 for (j = 0; j < outgoing_size; j++)
1132 ccv_array_add_unique_int(ws, outgoings[j]);
1133 _ccv_nnc_stateful_exec_free_if_possible(graph, symbol);
1134 ccv_nnc_graph_exec_symbol_free(graph->tape, symbol);
1135 }
1136 }
1137}
1138
1139void ccv_nnc_tensor_variable_free(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable)
1140{
1141 // If it contains a symbol, this tensor variable is not a free variable. It is either used as input or output.
1142 if (tensor_variable->symbol.d != CCV_NNC_NO_TENSOR_SYMBOL)
1143 {
1144 // If it is not a free variable, when can we free the symbol and the underlying variable?
1145 // 1. There should be no sources (the command generate this tensor should be freed) or the output of these sources is only the current one;
1146 // 2. The destinations (the commands that uses this tensor) should have no other inputs, or the other inputs has no binded sources as well.
1147 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, tensor_variable->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(tensor_variable->symbol.d
)));
1148 // There should be no source associated with it no more.
1149 // I am free if no exec symbol is producing me or the symbol producing me can only producing me (thus, it is not required to
1150 // compute gradient because I am the only variable it can compute gradient for).
1151 ccv_nnc_tensor_variable_graph_bind_t* root_bind = bind;
1152 if (bind->alias_ref)
1153 {
1154 const int alias_to = bind->alias_ref - 1;
1155 root_bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, alias_to)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(alias_to)));
1156 }
1157 int ws_start;
1158 const int can_free_symbol = _ccv_nnc_tensor_bind_trace_forward_to_free(graph, tensor_variable, bind, root_bind, &ws_start, 0);
1159 if (can_free_symbol)
1160 {
1161 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
1162 ccv_nnc_tensor_symbol_free(graph->tape, tensor_variable->symbol);
1163 _ccv_nnc_tensor_bind_trace_backward_to_free(graph, graph->ws, ws_start);
1164 } else { // If this symbol is not freed, move the tensor view to the bind.
1165 // If current bind is an alias, and it doesn't have any sources or destinations. We cannot find this alias
1166 // through any exec. This is not only safe to delete, but has to be deleted. We don't need to handle this
1167 // if free_symbol is true, because when that happens, root_bind will be deleted, and we will clean up the
1168 // alias in that process.
1169 if (bind->alias_ref && (!bind->sources || bind->sources->rnum == 0) && (!bind->destinations || bind->destinations->rnum == 0))
1170 {
1171 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
1172 ccv_nnc_tensor_symbol_free(graph->tape, tensor_variable->symbol);
1173 } else {
1174 bind->index = CCV_NNC_TENSOR_NO_VARIABLE_BUT_USED; // This tensor variable will be freed, but this symbol extra will continue exists.
1175 bind->destructor_hook.func = tensor_variable->destructor_hook.func; // Transfer the destructor callback.
1176 bind->destructor_hook.context = tensor_variable->destructor_hook.context; // Transfer the destructor callback context.
1177 bind->tensor_view = tensor_variable->tensor_view; // Transfer the ownership to the bind.
1178 tensor_variable->tensor_view = 0;
1179 }
1180 }
1181 }
1182 _ccv_nnc_tensor_variable_free(graph, tensor_variable, 1);
1183}
1184
1185void ccv_nnc_tensor_variable_detach(ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t tensor_variable)
1186{
1187 // This cannot be an alias.
1188 assert(!tensor_variable->alias_index_ref)((void) sizeof ((!tensor_variable->alias_index_ref) ? 1 : 0
), __extension__ ({ if (!tensor_variable->alias_index_ref)
; else __assert_fail ("!tensor_variable->alias_index_ref"
, "ccv_nnc_dynamic_graph.c", 1188, __extension__ __PRETTY_FUNCTION__
); }));
1189 // If no computation done yet, mark this as constant.
1190 if (tensor_variable->symbol.d == CCV_NNC_NO_TENSOR_SYMBOL)
1191 {
1192 tensor_variable->type = CCV_NNC_TENSOR_CONSTANT;
1193 return;
1194 }
1195 // Otherwise, we need to do some book keeping updates to make sure it doesn't participate gradient computation any more.
1196 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, tensor_variable->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(tensor_variable->symbol.d
)));
1197 // Because tensor variable cannot be alias, its bind cannot have alias pointer.
1198 assert(!bind->alias_ref)((void) sizeof ((!bind->alias_ref) ? 1 : 0), __extension__
({ if (!bind->alias_ref) ; else __assert_fail ("!bind->alias_ref"
, "ccv_nnc_dynamic_graph.c", 1198, __extension__ __PRETTY_FUNCTION__
); }));
1199 // Go through to break ties between sources and destinations.
1200 int i, j;
1201 if (bind->sources && bind->destinations)
1202 {
1203 for (i = 0; i < bind->sources->rnum; i++)
1204 {
1205 const int s = *(int*)ccv_array_get(bind->sources, i)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(i)));
1206 const int* outputs; int output_size;
1207 const ccv_nnc_graph_exec_symbol_t s_symbol = {
1208 .d = s,
1209 .graph = graph->tape
1210 };
1211 ccv_nnc_graph_exec_symbol_io(graph->tape, s_symbol, 0, 0, &outputs, &output_size);
1212 for (j = 0; j < bind->destinations->rnum; j++)
1213 {
1214 const int d = *(int*)ccv_array_get(bind->destinations, j)((void*)(((char*)((bind->destinations)->data)) + (size_t
)(bind->destinations)->rsize * (size_t)(j)));
1215 const ccv_nnc_graph_exec_symbol_t d_symbol = {
1216 .d = d,
1217 .graph = graph->tape
1218 };
1219 const int* inputs; int input_size;
1220 ccv_nnc_graph_exec_symbol_io(graph->tape, d_symbol, &inputs, &input_size, 0, 0);
1221 int x, y;
1222 int flag = 0; // Whether we find a symbol that connects source and destination but not the current one we detach. If found, we cannot break the tie between s_symbol and d_symbol.
1223 for (x = 0; !flag && x < output_size; x++)
1224 {
1225 ccv_nnc_tensor_symbol_t x_symbol = ccv_nnc_tensor_symbol_alias_to(graph->tape, (ccv_nnc_tensor_symbol_t){
1226 .d = outputs[x],
1227 .graph = graph->tape
1228 });
1229 if (x_symbol.d == CCV_NNC_NO_TENSOR_SYMBOL)
1230 {
1231 x_symbol.d = outputs[x];
1232 x_symbol.graph = graph->tape;
1233 }
1234 if (x_symbol.d == tensor_variable->symbol.d || x_symbol.d == CCV_NNC_NO_TENSOR_SYMBOL)
1235 continue;
1236 for (y = 0; !flag && y < input_size; y++)
1237 {
1238 ccv_nnc_tensor_symbol_t y_symbol = ccv_nnc_tensor_symbol_alias_to(graph->tape, (ccv_nnc_tensor_symbol_t){
1239 .d = inputs[y],
1240 .graph = graph->tape
1241 });
1242 if (y_symbol.d == CCV_NNC_NO_TENSOR_SYMBOL)
1243 {
1244 y_symbol.d = inputs[y];
1245 y_symbol.graph = graph->tape;
1246 }
1247 if (y_symbol.d == tensor_variable->symbol.d || y_symbol.d == CCV_NNC_NO_TENSOR_SYMBOL)
1248 continue;
1249 flag = (x_symbol.d == y_symbol.d);
1250 }
1251 }
1252 if (!flag)
1253 ccv_nnc_graph_exec_symbol_disjoin(graph->tape, s_symbol, d_symbol);
1254 }
1255 }
1256 }
1257 const int sources_and_is_only_output = (bind->sources && bind->sources->rnum > 0) && _ccv_nnc_tensor_variable_is_only_output(graph, bind, tensor_variable->symbol.d);
1258 if (!bind->sources || bind->sources->rnum == 0 || sources_and_is_only_output)
1259 {
1260 int ws_start = -1;
1261 _ccv_nnc_tensor_bind_trace_forward_to_free(graph, tensor_variable, bind, bind, &ws_start, 1);
1262 // Because we are detaching from the graph, there is no need to forward trace to see if it is not used and
1263 // then to remove the source execs. We can remove them right now, breaking the graph in two. That is why
1264 // we called trace backward to free regardless the outcome of the forward to free.
1265 if (ws_start == -1)
1266 {
1267 if (!graph->ws)
1268 graph->ws = ccv_array_new(sizeof(int), bind->destinations ? bind->destinations->rnum : 0, 0);
1269 ccv_array_t* const ws = graph->ws;
1270 ccv_array_clear(ws);
1271 if (bind->sources)
1272 for (i = 0; i < bind->sources->rnum; i++)
1273 ccv_array_add_unique_int(ws, *(int*)ccv_array_get(bind->sources, i)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(i))));
1274 ws_start = 0;
1275 }
1276 _ccv_nnc_tensor_bind_trace_backward_to_free(graph, graph->ws, ws_start);
1277 }
1278 // If now bind has no relevant sources or destinations, we can safely free the underlying tensor symbol.
1279 if ((!bind->sources || bind->sources->rnum == 0) && (!bind->destinations || bind->destinations->rnum == 0))
1280 {
1281 _ccv_nnc_tensor_variable_graph_bind_free(graph, bind, 1);
1282 ccv_nnc_tensor_symbol_free(graph->tape, tensor_variable->symbol);
1283 tensor_variable->type = CCV_NNC_TENSOR_CONSTANT;
1284 tensor_variable->symbol = NO_TENSOR_SYMBOL(const ccv_nnc_tensor_symbol_t){.d = CCV_NNC_NO_TENSOR_SYMBOL
};
1285 return;
1286 }
1287 // Mark both as constant, such that even if it cannot be freed now, it can be freed as soon as possible later.
1288 bind->type = CCV_NNC_TENSOR_CONSTANT;
1289 tensor_variable->type = CCV_NNC_TENSOR_CONSTANT;
1290}
1291
1292void ccv_nnc_dynamic_graph_has_effect_to_tensor_variables(const ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_tensor_variable_t* const source_variables, const int source_variable_size, const ccv_nnc_tensor_variable_t* const destination_variables, const int destination_variable_size, uint64_t* const bitmask)
1293{
1294 int i, j;
1295 ccv_array_t* const sources_destinations = ccv_array_new(sizeof(ccv_nnc_graph_exec_symbol_t), source_variable_size + destination_variable_size, 0);
1296 for (i = 0; i < source_variable_size; i++)
1297 {
1298 if (source_variables[i]->symbol.d < 0)
1299 continue;
1300 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, source_variables[i]->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(source_variables[i]->symbol
.d)));
1301 if (bind->destinations && bind->destinations->rnum > 0)
1302 for (j = 0; j < bind->destinations->rnum; j++)
1303 {
1304 // It is ok to have duplicate symbols.
1305 const int d = *(int*)ccv_array_get(bind->destinations, j)((void*)(((char*)((bind->destinations)->data)) + (size_t
)(bind->destinations)->rsize * (size_t)(j)));
1306 ccv_nnc_graph_exec_symbol_t symbol = {
1307 .d = d,
1308 .graph = graph->tape
1309 };
1310 ccv_array_push(sources_destinations, &symbol);
1311 }
1312 }
1313 const int source_size = sources_destinations->rnum;
1314 for (i = 0; i < destination_variable_size; i++)
1315 {
1316 if (destination_variables[i]->symbol.d < 0)
1317 continue;
1318 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, destination_variables[i]->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(destination_variables[i]->
symbol.d)));
1319 if (bind->sources && bind->sources->rnum > 0)
1320 for (j = 0; j < bind->sources->rnum; j++)
1321 {
1322 // It is ok to have duplicate symbols.
1323 const int d = *(int*)ccv_array_get(bind->sources, j)((void*)(((char*)((bind->sources)->data)) + (size_t)(bind
->sources)->rsize * (size_t)(j)));
1324 ccv_nnc_graph_exec_symbol_t symbol = {
1325 .d = d,
1326 .graph = graph->tape
1327 };
1328 ccv_array_push(sources_destinations, &symbol);
1329 }
1330 }
1331 const int destination_size = sources_destinations->rnum - source_size;
1332 if (source_size == 0 || destination_size == 0)
1333 {
1334 ccv_array_free(sources_destinations);
1335 return;
1336 }
1337 const int bitmask_size = ((source_size + 63) >> 6);
1338 assert(bitmask_size < 256)((void) sizeof ((bitmask_size < 256) ? 1 : 0), __extension__
({ if (bitmask_size < 256) ; else __assert_fail ("bitmask_size < 256"
, "ccv_nnc_dynamic_graph.c", 1338, __extension__ __PRETTY_FUNCTION__
); }));
1339 uint64_t exec_bitmask[bitmask_size];
1340 ccv_nnc_symbolic_graph_sources_to_destinations(graph->tape, (ccv_nnc_graph_exec_symbol_t*)ccv_array_get(sources_destinations, 0)((void*)(((char*)((sources_destinations)->data)) + (size_t
)(sources_destinations)->rsize * (size_t)(0))), source_size, (ccv_nnc_graph_exec_symbol_t*)ccv_array_get(sources_destinations, source_size)((void*)(((char*)((sources_destinations)->data)) + (size_t
)(sources_destinations)->rsize * (size_t)(source_size))), destination_size, exec_bitmask);
1341 int k = 0;
1342 for (i = 0; i < source_variable_size; i++)
1343 {
1344 if (source_variables[i]->symbol.d < 0)
1345 {
1346 bitmask[i >> 6] &= ~((uint64_t)1 << (i & 63));
1347 continue;
1348 }
1349 ccv_nnc_tensor_variable_graph_bind_t* const bind = (ccv_nnc_tensor_variable_graph_bind_t*)ccv_array_get(graph->binds, source_variables[i]->symbol.d)((void*)(((char*)((graph->binds)->data)) + (size_t)(graph
->binds)->rsize * (size_t)(source_variables[i]->symbol
.d)));
1350 int flag = 0;
1351 if (bind->destinations && bind->destinations->rnum > 0)
1352 {
1353 assert(k <= source_size - bind->destinations->rnum)((void) sizeof ((k <= source_size - bind->destinations->
rnum) ? 1 : 0), __extension__ ({ if (k <= source_size - bind
->destinations->rnum) ; else __assert_fail ("k <= source_size - bind->destinations->rnum"
, "ccv_nnc_dynamic_graph.c", 1353, __extension__ __PRETTY_FUNCTION__
); }));
1354 for (j = 0; !flag && j < bind->destinations->rnum; j++)
1355 flag = (((uint64_t)1 << ((k + j) & 63)) & exec_bitmask[(k + j) >> 6]);
1356 k += bind->destinations->rnum;
1357 }
1358 if (flag)
1359 bitmask[i >> 6] |= ((uint64_t)1 << (i & 63));
1360 else
1361 bitmask[i >> 6] &= ~((uint64_t)1 << (i & 63));
1362 }
1363 ccv_array_free(sources_destinations);
1364}
1365
1366int ccv_nnc_dynamic_graph_bookkeeping_count(const ccv_nnc_dynamic_graph_t* const graph, const int type)
1367{
1368 return ccv_nnc_symbolic_graph_active_symbol_count(graph->tape, type);
1369}
1370
1371void ccv_nnc_dynamic_graph_dot(const ccv_nnc_dynamic_graph_t* const graph, const int flags, FILE* out)
1372{
1373 ccv_nnc_symbolic_graph_dot(graph->tape, flags, out);
1374}
1375
1376void ccv_nnc_dynamic_graph_format(const ccv_nnc_dynamic_graph_t* const graph, const ccv_nnc_symbolic_graph_format_f format_fn, void* const context)
1377{
1378 ccv_nnc_symbolic_graph_format(graph->tape, 0, 0, 0, 0, format_fn, context);
1379}
←

./_ccv_nnc_stream.h

1/**********************************************************
2 * C-based/Cached/Core Computer Vision Library
3 * Liu Liu, 2010-02-01
4 **********************************************************/
5
6/**********************************************************
7 * CCV - Neural Network Collection
8 **********************************************************/
9
10#ifndef GUARD_ccv_nnc_stream_internal_h
11#define GUARD_ccv_nnc_stream_internal_h
12
13#include "ccv_nnc.h"
14#include "co.h"
15#include "3rdparty/sfmt/SFMT.h"
16#include "3rdparty/khash/khash.h"
17
18struct ccv_nnc_stream_signal_s {
19 int type;
20 ccv_nnc_stream_context_t* emit_context;
21};
22
23typedef struct {
24 // Empty, this will hold things such as NCCL communicator in subclass.
25 // Putting dummy because C / C++ treats empty struct differently.
26 int dummy;
27} ccv_nnc_stream_resource_container_t;
28
29struct ccv_nnc_stream_context_s {
30 int type;
31 // For resource container
32 ccv_nnc_stream_resource_container_t* _inline_container[1];
33 ccv_nnc_stream_resource_container_t** resource_container;
34 // For scheduler
35 co_routine_t* main; // main task.
36 co_scheduler_t* scheduler;
37 // For neighbor discovery
38 ccv_nnc_stream_context_neighbor_discovery_f neighbor_discovery;
39 void* neighbor_discovery_context;
40 // For hooks
41 ccv_array_t* destructor_hooks;
42 int reuse_destructor_hook;
43 ccv_nnc_stream_signal_t* event;
44 // For random number generator.
45 sfmt_t* sfmt;
46};
47
48// Return the scheduler from a stream (if not created, create one).
49CCV_WARN_UNUSED(co_scheduler_t*)co_scheduler_t* __attribute__((warn_unused_result)) ccv_nnc_stream_context_get_scheduler(ccv_nnc_stream_context_t* const stream_context);
50
51#define co_stream_await(_stream)do { if (!_co_stream_await(_self_, _stream)) { return (co_state_t
){ 51, 0 }; } case 51: ; } while (0) do { if (!_co_stream_await(_self_, _stream)) { return (co_state_t){ __LINE__51, 0 }; } case __LINE__51: ; } while (0)
52int _co_stream_await(co_routine_t* const self, ccv_nnc_stream_context_t* const stream);
53
54typedef struct {
55 ccv_nnc_callback_f fn;
56 void* callback_context;
57} ccv_nnc_async_callback_t;
58
59typedef void(*ccv_nnc_async_callback_f)(ccv_nnc_async_callback_t* const async);
60
61KHASH_MAP_INIT_INT(stream_map, ccv_nnc_stream_context_t*)typedef struct kh_stream_map_s { khint_t n_buckets, size, n_occupied
, upper_bound; khint32_t *flags; khint32_t *keys; ccv_nnc_stream_context_t
* *vals; } kh_stream_map_t; static inline __attribute__ ((__unused__
)) kh_stream_map_t *kh_init_stream_map(void) { return (kh_stream_map_t
*)calloc(1,sizeof(kh_stream_map_t)); } static inline __attribute__
((__unused__)) void kh_destroy_stream_map(kh_stream_map_t *h
) { if (h) { free((void *)h->keys); free(h->flags); free
((void *)h->vals); free(h); } } static inline __attribute__
((__unused__)) void kh_clear_stream_map(kh_stream_map_t *h) {
if (h && h->flags) { memset(h->flags, 0xaa, ((
h->n_buckets) < 16? 1 : (h->n_buckets)>>4) * sizeof
(khint32_t)); h->size = h->n_occupied = 0; } } static inline
__attribute__ ((__unused__)) khint_t kh_get_stream_map(const
kh_stream_map_t *h, khint32_t key) { if (h->n_buckets) { khint_t
k, i, last, mask, step = 0; mask = h->n_buckets - 1; k = (
khint32_t)(key); i = k & mask; last = i; while (!((h->
flags[i>>4]>>((i&0xfU)<<1))&2) &&
(((h->flags[i>>4]>>((i&0xfU)<<1))&
1) || !((h->keys[i]) == (key)))) { i = (i + (++step)) &
mask; if (i == last) return h->n_buckets; } return ((h->
flags[i>>4]>>((i&0xfU)<<1))&3)? h->
n_buckets : i; } else return 0; } static inline __attribute__
((__unused__)) int kh_resize_stream_map(kh_stream_map_t *h, khint_t
new_n_buckets) { khint32_t *new_flags = 0; khint_t j = 1; { (
--(new_n_buckets), (new_n_buckets)|=(new_n_buckets)>>1,
(new_n_buckets)|=(new_n_buckets)>>2, (new_n_buckets)|=
(new_n_buckets)>>4, (new_n_buckets)|=(new_n_buckets)>>
8, (new_n_buckets)|=(new_n_buckets)>>16, ++(new_n_buckets
)); if (new_n_buckets < 4) new_n_buckets = 4; if (h->size
>= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0
; else { new_flags = (khint32_t*)malloc(((new_n_buckets) <
16? 1 : (new_n_buckets)>>4) * sizeof(khint32_t)); if (
!new_flags) return -1; memset(new_flags, 0xaa, ((new_n_buckets
) < 16? 1 : (new_n_buckets)>>4) * sizeof(khint32_t))
; if (h->n_buckets < new_n_buckets) { khint32_t *new_keys
= (khint32_t*)realloc((void *)h->keys,new_n_buckets * sizeof
(khint32_t)); if (!new_keys) { free(new_flags); return -1; } h
->keys = new_keys; if (1) { ccv_nnc_stream_context_t* *new_vals
= (ccv_nnc_stream_context_t**)realloc((void *)h->vals,new_n_buckets
* sizeof(ccv_nnc_stream_context_t*)); if (!new_vals) { free(
new_flags); return -1; } h->vals = new_vals; } } } } if (j
) { for (j = 0; j != h->n_buckets; ++j) { if (((h->flags
[j>>4]>>((j&0xfU)<<1))&3) == 0) { khint32_t
key = h->keys[j]; ccv_nnc_stream_context_t* val; khint_t new_mask
; new_mask = new_n_buckets - 1; if (1) val = h->vals[j]; (
h->flags[j>>4]|=1ul<<((j&0xfU)<<1));
while (1) { khint_t k, i, step = 0; k = (khint32_t)(key); i =
k & new_mask; while (!((new_flags[i>>4]>>((i
&0xfU)<<1))&2)) i = (i + (++step)) & new_mask
; (new_flags[i>>4]&=~(2ul<<((i&0xfU)<<
1))); if (i < h->n_buckets && ((h->flags[i>>
4]>>((i&0xfU)<<1))&3) == 0) { { khint32_t
tmp = h->keys[i]; h->keys[i] = key; key = tmp; } if (1
) { ccv_nnc_stream_context_t* tmp = h->vals[i]; h->vals
[i] = val; val = tmp; } (h->flags[i>>4]|=1ul<<
((i&0xfU)<<1)); } else { h->keys[i] = key; if (1
) h->vals[i] = val; break; } } } } if (h->n_buckets >
new_n_buckets) { h->keys = (khint32_t*)realloc((void *)h->
keys,new_n_buckets * sizeof(khint32_t)); if (1) h->vals = (
ccv_nnc_stream_context_t**)realloc((void *)h->vals,new_n_buckets
* sizeof(ccv_nnc_stream_context_t*)); } free(h->flags); h
->flags = new_flags; h->n_buckets = new_n_buckets; h->
n_occupied = h->size; h->upper_bound = (khint_t)(h->
n_buckets * __ac_HASH_UPPER + 0.5); } return 0; } static inline
__attribute__ ((__unused__)) khint_t kh_put_stream_map(kh_stream_map_t
*h, khint32_t key, int *ret) { khint_t x; if (h->n_occupied
>= h->upper_bound) { if (h->n_buckets > (h->size
<<1)) { if (kh_resize_stream_map(h, h->n_buckets - 1
) < 0) { *ret = -1; return h->n_buckets; } } else if (kh_resize_stream_map
(h, h->n_buckets + 1) < 0) { *ret = -1; return h->n_buckets
; } } { khint_t k, i, site, last, mask = h->n_buckets - 1,
step = 0; x = site = h->n_buckets; k = (khint32_t)(key); i
= k & mask; if (((h->flags[i>>4]>>((i&
0xfU)<<1))&2)) x = i; else { last = i; while (!((h->
flags[i>>4]>>((i&0xfU)<<1))&2) &&
(((h->flags[i>>4]>>((i&0xfU)<<1))&
1) || !((h->keys[i]) == (key)))) { if (((h->flags[i>>
4]>>((i&0xfU)<<1))&1)) site = i; i = (i +
(++step)) & mask; if (i == last) { x = site; break; } } if
(x == h->n_buckets) { if (((h->flags[i>>4]>>
((i&0xfU)<<1))&2) && site != h->n_buckets
) x = site; else x = i; } } } if (((h->flags[x>>4]>>
((x&0xfU)<<1))&2)) { h->keys[x] = key; (h->
flags[x>>4]&=~(3ul<<((x&0xfU)<<1)))
; ++h->size; ++h->n_occupied; *ret = 1; } else if (((h->
flags[x>>4]>>((x&0xfU)<<1))&1)) { h
->keys[x] = key; (h->flags[x>>4]&=~(3ul<<
((x&0xfU)<<1))); ++h->size; *ret = 2; } else *ret
= 0; return x; } static inline __attribute__ ((__unused__)) void
kh_del_stream_map(kh_stream_map_t *h, khint_t x) { if (x != h
->n_buckets && !((h->flags[x>>4]>>(
(x&0xfU)<<1))&3)) { (h->flags[x>>4]|=1ul
<<((x&0xfU)<<1)); --h->size; } };
45
←
Null pointer value stored to field 'flags'
→
48
←
Taking true branch
→
49
←
Taking false branch
→
50
←
Calling 'kh_resize_stream_map'
→
51
←
Taking true branch
→
52
←
Assuming the condition is true
→
53
←
Taking true branch
→
54
←
Taking false branch
→
55
←
Returning without writing to 'h->flags'
→
56
←
Returning from 'kh_resize_stream_map'
→
57
←
Taking false branch
→
58
←
Array access (via field 'flags') results in a null pointer dereference
62
63#endif