Work on replacing pthread with std::thread

angelscript/source/as_config.h

@@ -998,7 +998,7 @@
 			#define AS_MAX_PORTABILITY
 		#endif
 		#define AS_LINUX
-		#define AS_POSIX_THREADS
+		#define AS_STD_THREADS
 
 		#if !( ( (__GNUC__ == 4) && (__GNUC_MINOR__ >= 1) || __GNUC__ > 4) )
 			// Only with GCC 4.1 was the atomic instructions available
@@ -1273,7 +1273,7 @@
 // If the form of threads to use hasn't been chosen
 // then the library will be compiled without support
 // for multithreading
-#if !defined(AS_POSIX_THREADS) && !defined(AS_WINDOWS_THREADS)
+#if !defined(AS_POSIX_THREADS) && !defined(AS_WINDOWS_THREADS) && !defined(AS_STD_THREADS)
 	#define AS_NO_THREADS
 #endif
 

angelscript/source/as_criticalsection.h

@@ -179,6 +179,45 @@ protected:
 // but it gives a compiler error on MSVC6 so I'm leaving it outside
 static const asUINT maxReaders = 10;
 
+#elif defined(AS_STD_THREADS)
+
+END_AS_NAMESPACE
+#include <thread>
+#include <mutex>
+#include <shared_mutex>
+BEGIN_AS_NAMESPACE
+
+class asCThreadCriticalSection
+{
+public:
+    asCThreadCriticalSection();
+    ~asCThreadCriticalSection();
+
+    void Enter();
+    void Leave();
+    bool TryEnter();
+
+protected:
+    std::mutex _mutex;
+};
+
+class asCThreadReadWriteLock
+{
+public:
+    asCThreadReadWriteLock();
+    ~asCThreadReadWriteLock();
+
+    void AcquireExclusive();
+    void ReleaseExclusive();
+    bool TryAcquireExclusive();
+
+    void AcquireShared();
+    void ReleaseShared();
+    bool TryAcquireShared();
+protected:
+    std::shared_mutex _mutex;
+};
+
 #endif
 
 #endif

angelscript/source/as_thread.cpp

@@ -226,6 +226,10 @@ asCThreadManager::~asCThreadManager()
 #endif
 }
 
+#if defined(AS_STD_THREADS)
+thread_local asCThreadLocalData *std_tld;
+#endif
+
 int asCThreadManager::CleanupLocalData()
 {
 	if( threadManager == 0 )
@@ -237,7 +241,9 @@ int asCThreadManager::CleanupLocalData()
 #elif defined AS_WINDOWS_THREADS
 	#if !defined(_MSC_VER) || !(WINAPI_FAMILY & WINAPI_FAMILY_PHONE_APP)
 		asCThreadLocalData *tld = (asCThreadLocalData*)TlsGetValue((DWORD)threadManager->tlsKey);
-	#endif
+    #endif
+#elif defined(AS_STD_THREADS)
+        auto tld = std_tld;
 #endif
 
 	if( tld == 0 )
@@ -299,7 +305,13 @@ asCThreadLocalData *asCThreadManager::GetLocalData()
  			tld = asNEW(asCThreadLocalData)();
 			TlsSetValue((DWORD)threadManager->tlsKey, tld);
  		}
-	#endif
+    #endif
+#elif defined(AS_STD_THREADS)
+    if(std_tld == nullptr)
+    {
+        std_tld = asNEW(asCThreadLocalData)();
+    }
+    auto tld = std_tld;
 #endif
 
 	return tld;
@@ -355,6 +367,8 @@ void asCThreadCriticalSection::Enter()
 	pthread_mutex_lock(&cs);
 #elif defined AS_WINDOWS_THREADS
 	EnterCriticalSection(&cs);
+#elif defined(AS_STD_THREADS)
+    _mutex.lock();
 #endif
 }
 
@@ -364,6 +378,8 @@ void asCThreadCriticalSection::Leave()
 	pthread_mutex_unlock(&cs);
 #elif defined AS_WINDOWS_THREADS
 	LeaveCriticalSection(&cs);
+#elif defined(AS_STD_THREADS)
+    _mutex.unlock();
 #endif
 }
 
@@ -373,6 +389,8 @@ bool asCThreadCriticalSection::TryEnter()
 	return !pthread_mutex_trylock(&cs);
 #elif defined AS_WINDOWS_THREADS
 	return TryEnterCriticalSection(&cs) ? true : false;
+#elif defined(AS_STD_THREADS)
+    return _mutex.try_lock();
 #else
 	return true;
 #endif
@@ -427,6 +445,8 @@ void asCThreadReadWriteLock::AcquireExclusive()
 	// Allow another writer to lock. It will only be able to
 	// lock the readers when this writer releases them anyway.
 	LeaveCriticalSection(&writeLock);
+#elif defined(AS_STD_THREADS)
+    _mutex.lock();
 #endif
 }
 
@@ -437,6 +457,8 @@ void asCThreadReadWriteLock::ReleaseExclusive()
 #elif defined AS_WINDOWS_THREADS
 	// Release all readers at once
 	ReleaseSemaphore(readLocks, maxReaders, 0);
+#elif defined(AS_STD_THREADS)
+    _mutex.unlock();
 #endif
 }
 
@@ -447,6 +469,8 @@ void asCThreadReadWriteLock::AcquireShared()
 #elif defined AS_WINDOWS_THREADS
 	// Lock a reader slot
 	WaitForSingleObjectEx(readLocks, INFINITE, FALSE);
+#elif defined(AS_STD_THREADS)
+    _mutex.lock_shared();
 #endif
 }
 
@@ -457,6 +481,8 @@ void asCThreadReadWriteLock::ReleaseShared()
 #elif defined AS_WINDOWS_THREADS
 	// Release the reader slot
 	ReleaseSemaphore(readLocks, 1, 0);
+#elif defined(AS_STD_THREADS)
+    _mutex.unlock_shared();
 #endif
 }