Initial commit.

Framework/external/embree/common/tasking/taskschedulerppl.cpp

@@ -0,0 +1,42 @@
+// Copyright 2009-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#include "taskschedulerppl.h"
+
+namespace embree
+{
+  static bool g_ppl_threads_initialized = false;
+    
+  void TaskScheduler::create(size_t numThreads, bool set_affinity, bool start_threads)
+  {
+    assert(numThreads);
+    
+    /* first terminate threads in case we configured them */
+    if (g_ppl_threads_initialized) {
+      g_ppl_threads_initialized = false;
+    }
+    
+    /* now either keep default settings or configure number of threads */
+    if (numThreads == std::numeric_limits<size_t>::max())
+    {
+      g_ppl_threads_initialized = false;
+      numThreads = threadCount();
+    }
+    else 
+    {
+      g_ppl_threads_initialized = true;
+      try {
+        concurrency::Scheduler::SetDefaultSchedulerPolicy(concurrency::SchedulerPolicy(2, concurrency::MinConcurrency, numThreads, concurrency::MaxConcurrency, numThreads));
+      }
+      catch(concurrency::default_scheduler_exists &) { 
+      }
+    }
+  }
+  
+  void TaskScheduler::destroy()
+  {
+    if (g_ppl_threads_initialized) {
+      g_ppl_threads_initialized = false;
+    }
+  }
+}