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implementation for WelsSleep on WP8.0
https://rbcommons.com/s/OpenH264/r/1315/

--- a/codec/common/src/WelsThreadLib.cpp

+++ b/codec/common/src/WelsThreadLib.cpp

@@ -71,6 +71,7 @@

 #ifdef WINAPI_FAMILY

 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)

+#define WP80

 using namespace Platform;

 using namespace Windows::Foundation;

 using namespace Windows::System::Threading;

@@ -174,10 +175,31 @@

   return WELS_THREAD_ERROR_OK;

 }

+#ifndef WP80

 void WelsSleep (uint32_t dwMilliSecond) {

   ::Sleep (dwMilliSecond);

 }

+#else

+void WelsSleep (uint32_t dwMilliSecond) {

+  static WELS_EVENT hSleepEvent = NULL;

+  if (!hSleepEvent) {

+    WELS_EVENT hLocalSleepEvent = NULL;

+    WELS_THREAD_ERROR_CODE ret = WelsEventOpen (&hLocalSleepEvent);

+    if (WELS_THREAD_ERROR_OK != ret) {

+      return;

+    }

+    WELS_EVENT hPreviousEvent = InterlockedCompareExchangePointerRelease (&hSleepEvent, hLocalSleepEvent, NULL);

+    if (hPreviousEvent) {

+      WelsEventClose (&hLocalSleepEvent);

+    }

+    //On this singleton usage idea of using InterlockedCompareExchangePointerRelease:

+    //   similar idea of can be found at msdn blog when introducing InterlockedCompareExchangePointerRelease

+  }

+  WaitForSingleObject (hSleepEvent, dwMilliSecond);

+}

+#endif

+

 WELS_THREAD_ERROR_CODE    WelsThreadCreate (WELS_THREAD_HANDLE* thread,  LPWELS_THREAD_ROUTINE  routine,

     void* arg, WELS_THREAD_ATTR attr) {

 #ifdef USE_THREADPOOL

@@ -229,7 +251,7 @@

   return WELS_THREAD_ERROR_OK;

 }

-#else

+#else //platform: #ifdef _WIN32

 WELS_THREAD_ERROR_CODE    WelsThreadCreate (WELS_THREAD_HANDLE* thread,  LPWELS_THREAD_ROUTINE  routine,

     void* arg, WELS_THREAD_ATTR attr) {

--- a/test/common/CWelsCircleQueue.cpp

+++ b/test/common/CWelsCircleQueue.cpp

@@ -193,3 +193,4 @@

   delete pTaskThread3;

 }

 #endif

+