Initial release

engine/vendor/vst3sdk/base/thread/include/fcondition.h

@@ -0,0 +1,104 @@
+//------------------------------------------------------------------------
+// Project     : SDK Base
+// Version     : 1.0
+//
+// Category    : Helpers
+// Filename    : base/thread/include/fcondition.h
+// Created by  : Steinberg, 1995
+// Description : the threads and locks and signals...
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses. 
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+//----------------------------------------------------------------------------------
+/** @file base/thread/include/fcondition.h
+	signal. */
+/** @defgroup baseThread Thread Handling */
+//----------------------------------------------------------------------------------
+
+#pragma once
+
+#include "pluginterfaces/base/ftypes.h"
+
+#if SMTG_PTHREADS 
+#include <pthread.h>
+#endif
+
+//------------------------------------------------------------------------
+namespace Steinberg {
+namespace Base {
+namespace Thread {
+
+//------------------------------------------------------------------------
+/**	FCondition - wraps the signal and wait calls in win32
+@ingroup baseThread	*/
+//------------------------------------------------------------------------
+class FCondition
+{
+public:
+//------------------------------------------------------------------------
+
+	/** Condition constructor.
+	 *  @param name name of condition
+	 */
+	FCondition (const char8* name = nullptr /* "FCondition" */ );
+
+	/** Condition destructor.
+	 */
+	~FCondition ();
+	
+	/** Signals one thread.
+	 */
+	void signal ();
+
+	/** Signals all threads.
+	 */
+	void signalAll ();
+
+	/** Waits for condition.
+	 */
+	void wait ();
+
+	/** Waits for condition with timeout
+	 *  @param timeout time out in milliseconds
+	 *  @return false if timed out
+	 */
+	bool waitTimeout (int32 timeout = -1);
+
+	/** Resets condition.
+	 */
+	void reset ();
+
+#if SMTG_OS_WINDOWS
+	/** Gets condition handle.
+	 *  @return handle
+	 */
+	void* getHandle () { return event; }
+#endif
+
+//------------------------------------------------------------------------
+private:
+#if SMTG_PTHREADS
+	pthread_mutex_t mutex;		///< Mutex object
+	pthread_cond_t cond;		///< Condition object
+	int32 state;				///< Use to hold the state of the signal
+	int32 waiters;				///< Number of waiters
+
+	#if DEVELOPMENT
+	int32     waits;			///< Waits count
+	int32     signalCount;		///< Signals count
+	#endif
+#elif SMTG_OS_WINDOWS
+	void* event;				///< Event handle
+#endif
+};
+
+//------------------------------------------------------------------------
+} // namespace Thread
+} // namespace Base
+} // namespace Steinberg