GSDX-ogl linux:

+ Implement threads/mutex using std::thread/std::mutex/std::condition_variable
+ Old implementation can be used by commenting out the "define _STD_THREAD_ in GSThread.h
+ Commit should be much cleaner than previous one.

plugins/GSdx/GSThread.cpp

@@ -99,9 +99,9 @@ DWORD WINAPI GSThread::StaticThreadProc(void* lpParam)
 void* GSThread::StaticThreadProc(void* param)
 {
 	((GSThread*)param)->ThreadProc();
-
+#ifndef _STD_THREAD_ // exit is done implicitly by std::thread
 	pthread_exit(NULL);
-
+#endif
 	return NULL;
 }
 
@@ -114,9 +114,13 @@ void GSThread::CreateThread()
 	m_hThread = ::CreateThread(NULL, 0, StaticThreadProc, (void*)this, 0, &m_ThreadId);
 
 	#else
-
+    
+    #ifdef _STD_THREAD_
+    t = new thread(StaticThreadProc,(void*)this);
+    #else
     pthread_attr_init(&m_thread_attr);
     pthread_create(&m_thread, &m_thread_attr, StaticThreadProc, (void*)this);
+    #endif
 
 	#endif
 }
@@ -140,12 +144,19 @@ void GSThread::CloseThread()
 	}
 
     #else
-
+    
+    #ifdef _STD_THREAD_
+    if(t->joinable())
+    {
+        t->join();
+    }
+    delete(t);
+    #else
     void* ret = NULL;
 
     pthread_join(m_thread, &ret);
     pthread_attr_destroy(&m_thread_attr);
-
+    #endif
     #endif
 }
 

plugins/GSdx/GSThread.h

@@ -142,15 +142,25 @@ public:
 };
 
 #else
-
+// let us use std::thread for now, comment out the definition to go back to pthread
+#define _STD_THREAD_
+#ifdef _STD_THREAD_
+#include <thread>
+#include <mutex>
+#include <condition_variable>
+#else
 #include <pthread.h>
 #include <semaphore.h>
+#endif
 
 class GSThread : public IGSThread
 {
+    #ifdef _STD_THREAD_
+    std::thread *t;
+    #else
     pthread_attr_t m_thread_attr;
     pthread_t m_thread;
-
+    #endif
     static void* StaticThreadProc(void* param);
 
 protected:
@@ -164,30 +174,61 @@ public:
 
 class GSCritSec : public IGSLock
 {
+    #ifdef _STD_THREAD_
+    recursive_mutex *mutex_critsec;
+    #else
     pthread_mutexattr_t m_mutex_attr;
     pthread_mutex_t m_mutex;
+    #endif
 
 public:
     GSCritSec(bool recursive = true)
     {
+        #ifdef _STD_THREAD_
+        mutex_critsec = new recursive_mutex();    
+        #else
         pthread_mutexattr_init(&m_mutex_attr);
         pthread_mutexattr_settype(&m_mutex_attr, recursive ? PTHREAD_MUTEX_RECURSIVE : PTHREAD_MUTEX_NORMAL);
         pthread_mutex_init(&m_mutex, &m_mutex_attr);
+        #endif
     }
 
     ~GSCritSec()
     {
+        #ifdef  _STD_THREAD_
+        delete(mutex_critsec);
+        #else
         pthread_mutex_destroy(&m_mutex);
         pthread_mutexattr_destroy(&m_mutex_attr);
+        #endif
+    }
+    
+    #ifdef _STD_THREAD_
+    void Lock()
+    {
+        mutex_critsec->lock();
+    }
+    
+    bool TryLock()
+    {
+        return mutex_critsec->try_lock();
     }
 
+    void Unlock()
+    {
+        mutex_critsec->unlock();
+    }
+    
+    recursive_mutex& GetMutex() {return ref(*mutex_critsec);}
+    #else
     void Lock() {pthread_mutex_lock(&m_mutex);}
     bool TryLock() {return pthread_mutex_trylock(&m_mutex) == 0;}
     void Unlock() {pthread_mutex_unlock(&m_mutex);}
 
 	operator pthread_mutex_t* () {return &m_mutex;}
+    #endif
 };
-
+#ifndef _STD_THREAD_
 class GSEvent : public IGSEvent
 {
 protected:
@@ -200,7 +241,7 @@ public:
     void Set() {sem_post(&m_sem);}
 	bool Wait(IGSLock* l) {if(l) l->Unlock(); bool b = sem_wait(&m_sem) == 0; if(l) l->Lock(); return b;}
 };
-
+#endif
 class GSCondVarLock : public GSCritSec
 {
 public:
@@ -211,26 +252,54 @@ public:
 
 class GSCondVar : public IGSEvent
 {
-	pthread_cond_t m_cv;
+    #ifdef _STD_THREAD_
+    condition_variable_any *cond_var;
+    #else
+    pthread_cond_t m_cv;
 	pthread_condattr_t m_cv_attr;
+    #endif
 
 public:
 	GSCondVar() 
 	{
+        #ifdef _STD_THREAD_
+        cond_var = new condition_variable_any();
+        #else
 		pthread_condattr_init(&m_cv_attr);
 		pthread_cond_init(&m_cv, &m_cv_attr);
+        #endif
 	}
 
 	virtual ~GSCondVar() 
 	{
+        #ifdef _STD_THREAD_
+        delete(cond_var);
+        #else
 		pthread_condattr_destroy(&m_cv_attr);
 		pthread_cond_destroy(&m_cv);
-	}
+        #endif
+    
+    }
+    
+    #ifdef _STD_THREAD_
+	void Set() 
+    {
+        cond_var->notify_one();
+    }
+    
+    bool Wait(IGSLock* l) 
+    {
+        cond_var->wait((((GSCondVarLock*)l)->GetMutex())); // Predicate is not useful, it is implicit in the loop
+        return 1; // Anyway this value is not used(and no way to get it from std::thread)
+    }
 
-	void Set() {pthread_cond_signal(&m_cv);}
+    operator condition_variable_any* () {return cond_var;}
+    #else
+    void Set() {pthread_cond_signal(&m_cv);}
 	bool Wait(IGSLock* l) {return pthread_cond_wait(&m_cv, *(GSCondVarLock*)l) == 0;}
 
 	operator pthread_cond_t* () {return &m_cv;}
+    #endif
 };
 
 #endif
@@ -299,19 +368,22 @@ public:
 		}
 
 		#endif
-
+        #ifndef _STD_THREAD_
 		if(condvar)
+        #endif
 		{
 			m_notempty = new GSCondVar();
 			m_empty = new GSCondVar();
 			m_lock = new GSCondVarLock();
 		}
+        #ifndef _STD_THREAD_
 		else
 		{
 			m_notempty = new GSEvent();
 			m_empty = new GSEvent();
 			m_lock = new GSCritSec();
 		}
+        #endif
 
 		CreateThread();
 	}