emulator/opengl: Remove Android-specific thread_store.

This patch removes the use of the 'thread_store' class from
<utils/threads.h> by providing its own implementation instead
under shared/emugl/common/thread_store.h, plus appropriate
unit tests.

Note that unlike the Android version, this properly destroys
the thread-local values on thread exit (instead of leaking
them).

+ Provide a LazyInstance class used to perform thread-safe
  lazy initialization of static variables without the use
  of C++ constructors.

Change-Id: Iabe01fbd713c6872b5fe245d7255c3c03749a88a

1 files changed, 3 insertions, 0 deletions

diff --git a/emulator/opengl/shared/OpenglOsUtils/osThreadUnix.cpp b/emulator/opengl/shared/OpenglOsUtils/osThreadUnix.cpp
index 8cd73a9..ef2bebc 100644
--- a/emulator/opengl/shared/OpenglOsUtils/osThreadUnix.cpp
+++ b/emulator/opengl/shared/OpenglOsUtils/osThreadUnix.cpp
@@ -15,6 +15,8 @@
 */
 #include "osThread.h"
 
+#include "emugl/common/thread_store.h"
+
 #include <stdint.h>
 
 namespace osUtils {
@@ -88,6 +90,7 @@ Thread::thread_main(void *p_arg)
     self->m_exitStatus = ret;
     pthread_mutex_unlock(&self->m_lock);
 
+    ::emugl::ThreadStore::OnThreadExit();
     return (void*)(uintptr_t)ret;
 }