version 1.22.0

source tree changed
detached PIConsole and PIScreen* in "pip_console" library

lib/concurrent/piconditionlock.cpp

@@ -0,0 +1,108 @@
+/*
+	PIP - Platform Independent Primitives
+
+	Stephan Fomenko
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "piconditionlock.h"
+#ifdef WINDOWS
+#include "synchapi.h"
+#else
+#include "pthread.h"
+#endif
+
+
+PRIVATE_DEFINITION_START(PIConditionLock)
+#ifdef WINDOWS
+CRITICAL_SECTION
+#else
+pthread_mutex_t
+#endif
+nativeHandle;
+PRIVATE_DEFINITION_END(PIConditionLock)
+
+
+#ifdef WINDOWS
+PIConditionLock::PIConditionLock() {
+	InitializeCriticalSection(&PRIVATE->nativeHandle);
+}
+
+
+PIConditionLock::~PIConditionLock() {
+	DeleteCriticalSection(&PRIVATE->nativeHandle);
+}
+
+
+void PIConditionLock::lock() {
+	EnterCriticalSection(&PRIVATE->nativeHandle);
+}
+
+
+void PIConditionLock::unlock() {
+	LeaveCriticalSection(&PRIVATE->nativeHandle);
+}
+
+
+void *PIConditionLock::handle() {
+	return &PRIVATE->nativeHandle;
+}
+
+
+bool PIConditionLock::tryLock() {
+	return TryEnterCriticalSection(&PRIVATE->nativeHandle) != 0;
+}
+#else
+
+
+PIConditionLock::PIConditionLock() {
+	pthread_mutexattr_t attr;
+	memset(&attr, 0, sizeof(attr));
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+	memset(&(PRIVATE->nativeHandle), 0, sizeof(PRIVATE->nativeHandle));
+	pthread_mutex_init(&(PRIVATE->nativeHandle), &attr);
+	pthread_mutexattr_destroy(&attr);
+}
+
+
+PIConditionLock::~PIConditionLock() {
+	pthread_mutex_destroy(&(PRIVATE->nativeHandle));
+}
+
+
+void PIConditionLock::lock() {
+	pthread_mutex_lock(&(PRIVATE->nativeHandle));
+}
+
+
+void PIConditionLock::unlock() {
+	pthread_mutex_unlock(&(PRIVATE->nativeHandle));
+}
+
+
+void *PIConditionLock::handle() {
+	return &PRIVATE->nativeHandle;
+}
+
+
+bool PIConditionLock::tryLock() {
+	return (pthread_mutex_trylock(&(PRIVATE->nativeHandle)) == 0);
+}
+#endif
+
+
+
+