Campbell Barton
a8ec7845e0
Also replace "num" with: - "number" when it's not used to denote the number of items. - "digits" when digits in a string are being manipulated.
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup bli
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*
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* Task scheduler initialization.
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*/
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#include "MEM_guardedalloc.h"
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#include "BLI_task.h"
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#include "BLI_threads.h"
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#ifdef WITH_TBB
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/* Need to include at least one header to get the version define. */
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# include <tbb/blocked_range.h>
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# include <tbb/task_arena.h>
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# if TBB_INTERFACE_VERSION_MAJOR >= 10
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# include <tbb/global_control.h>
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# define WITH_TBB_GLOBAL_CONTROL
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# endif
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#endif
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/* Task Scheduler */
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static int task_scheduler_num_threads = 1;
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#ifdef WITH_TBB_GLOBAL_CONTROL
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static tbb::global_control *task_scheduler_global_control = nullptr;
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#endif
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void BLI_task_scheduler_init()
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{
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#ifdef WITH_TBB_GLOBAL_CONTROL
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const int threads_override_num = BLI_system_num_threads_override_get();
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if (threads_override_num > 0) {
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/* Override number of threads. This settings is used within the lifetime
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* of tbb::global_control, so we allocate it on the heap. */
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task_scheduler_global_control = MEM_new<tbb::global_control>(
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__func__, tbb::global_control::max_allowed_parallelism, threads_override_num);
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task_scheduler_num_threads = threads_override_num;
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}
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else {
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/* Let TBB choose the number of threads. For (legacy) code that calls
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* BLI_task_scheduler_num_threads() we provide the system thread count.
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* Ideally such code should be rewritten not to use the number of threads
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* at all. */
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task_scheduler_num_threads = BLI_system_thread_count();
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}
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#else
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task_scheduler_num_threads = BLI_system_thread_count();
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#endif
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}
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void BLI_task_scheduler_exit()
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{
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#ifdef WITH_TBB_GLOBAL_CONTROL
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MEM_delete(task_scheduler_global_control);
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#endif
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}
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int BLI_task_scheduler_num_threads()
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{
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return task_scheduler_num_threads;
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}
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void BLI_task_isolate(void (*func)(void *userdata), void *userdata)
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{
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#ifdef WITH_TBB
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tbb::this_task_arena::isolate([&] { func(userdata); });
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#else
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func(userdata);
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#endif
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}
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