From: Josh Gargus <jjosh@google.com>
Date: Sat, 15 Oct 2016 22:19:59 +0000 (-0700)
Subject: Use a recursive mutex.
X-Git-Tag: upstream/11.4.0~1446^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=425af5f6b03b66ff14283d4ba9e8c045d453514f;p=platform%2Fupstream%2Fglslang.git

Use a recursive mutex.
---

diff --git a/glslang/OSDependent/Unix/ossource.cpp b/glslang/OSDependent/Unix/ossource.cpp
index 0e6d730..7e84d4e 100644
--- a/glslang/OSDependent/Unix/ossource.cpp
+++ b/glslang/OSDependent/Unix/ossource.cpp
@@ -165,10 +165,27 @@ bool OS_FreeTLSIndex(OS_TLSIndex nIndex)
 		return false;
 }
 
-static pthread_mutex_t gMutex;
-void InitGlobalLock() { pthread_mutex_init(&gMutex, NULL); }
-void GetGlobalLock() { pthread_mutex_lock(&gMutex); }
-void ReleaseGlobalLock() { pthread_mutex_unlock(&gMutex); }
+namespace {
+pthread_mutex_t gMutex;
+}
+
+void InitGlobalLock()
+{
+  pthread_mutexattr_t mutexattr;
+  pthread_mutexattr_init(&mutexattr);
+  pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_RECURSIVE);
+  pthread_mutex_init(&gMutex, &mutexattr);
+}
+
+void GetGlobalLock()
+{
+  pthread_mutex_lock(&gMutex);
+}
+
+void ReleaseGlobalLock()
+{
+  pthread_mutex_unlock(&gMutex);
+}
 
 // TODO: non-windows: if we need these on linux, flesh them out
 void* OS_CreateThread(TThreadEntrypoint /*entry*/)