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// 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
}
};
};
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