Revision control
++ // Copyright 2009-2021 Intel Corporation
++ // SPDX-License-Identifier: Apache-2.0
++
++ #pragma once
++
++ #include "../sys/platform.h"
++ #include "../sys/alloc.h"
++ #include "../sys/barrier.h"
++ #include "../sys/thread.h"
++ #include "../sys/mutex.h"
++ #include "../sys/condition.h"
++ #include "../sys/ref.h"
++
++ #if defined(__WIN32__) && !defined(NOMINMAX)
++ # define NOMINMAX
++ #endif
++
++ // We need to define these to avoid implicit linkage against
++ // tbb_debug.lib under Windows. When removing these lines debug build
++ // under Windows fails.
++ #define __TBB_NO_IMPLICIT_LINKAGE 1
++ #define __TBBMALLOC_NO_IMPLICIT_LINKAGE 1
++ #define TBB_SUPPRESS_DEPRECATED_MESSAGES 1
++ #define TBB_PREVIEW_ISOLATED_TASK_GROUP 1
++ #include "tbb/tbb.h"
++ #include "tbb/parallel_sort.h"
++
++ namespace embree
++ {
++ struct TaskScheduler
++ {
++ /*! initializes the task scheduler */
++ static void create(size_t numThreads, bool set_affinity, bool start_threads);
++
++ /*! destroys the task scheduler again */
++ static void destroy();
++
++ /* returns the ID of the current thread */
++ static __forceinline size_t threadID()
++ {
++ return threadIndex();
++ }
++
++ /* returns the index (0..threadCount-1) of the current thread */
++ static __forceinline size_t threadIndex()
++ {
++ #if TBB_INTERFACE_VERSION >= 9100
++ return tbb::this_task_arena::current_thread_index();
++ #elif TBB_INTERFACE_VERSION >= 9000
++ return tbb::task_arena::current_thread_index();
++ #else
++ return 0;
++ #endif
++ }
++
++ /* returns the total number of threads */
++ static __forceinline size_t threadCount() {
++ #if TBB_INTERFACE_VERSION >= 9100
++ return tbb::this_task_arena::max_concurrency();
++ #else
++ return tbb::task_scheduler_init::default_num_threads();
++ #endif
++ }
++
++ };
++
++ };