initial import

dlls/mysqlx/thread/PosixThreads.cpp

@@ -0,0 +1,263 @@
+#include <unistd.h>
+#include "PosixThreads.h"
+
+void PosixThreader::ThreadSleep(unsigned int ms)
+{
+	usleep( ms * 1000 );
+}
+
+void PosixThreader::GetPriorityBounds(ThreadPriority &max, ThreadPriority &min)
+{
+	max = ThreadPrio_Normal;
+	min = ThreadPrio_Normal;
+}
+
+IMutex *PosixThreader::MakeMutex()
+{
+	pthread_mutex_t mutex;
+
+	if (pthread_mutex_init(&mutex, NULL) != 0)
+		return NULL;
+
+	PosixMutex *pMutex = new PosixMutex(mutex);
+
+	return pMutex;
+}
+
+
+void PosixThreader::MakeThread(IThread *pThread)
+{
+	ThreadParams defparams;
+
+	defparams.flags = Thread_AutoRelease;
+	defparams.prio = ThreadPrio_Normal;
+
+	MakeThread(pThread, &defparams);
+}
+
+IThreadHandle *PosixThreader::MakeThread(IThread *pThread, ThreadFlags flags)
+{
+	ThreadParams defparams;
+
+	defparams.flags = flags;
+	defparams.prio = ThreadPrio_Normal;
+
+	return MakeThread(pThread, &defparams);
+}
+
+void *Posix_ThreadGate(void *param)
+{
+	PosixThreader::ThreadHandle *pHandle = 
+		reinterpret_cast<PosixThreader::ThreadHandle *>(param);
+
+	//Block this thread from being started initially.
+	pthread_mutex_lock(&pHandle->m_runlock);
+	//if we get here, we've obtained the lock and are allowed to run.
+	//unlock and continue.
+	pthread_mutex_unlock(&pHandle->m_runlock);
+
+	pHandle->m_run->RunThread(pHandle);
+
+	ThreadParams params;
+	pthread_mutex_lock(&pHandle->m_statelock);
+	pHandle->m_state = Thread_Done;
+	pHandle->GetParams(&params);
+	pthread_mutex_unlock(&pHandle->m_statelock);
+
+	pHandle->m_run->OnTerminate(pHandle, false);
+	if (params.flags & Thread_AutoRelease)
+		delete pHandle;
+
+	return 0;
+}
+
+ThreadParams g_defparams;
+IThreadHandle *PosixThreader::MakeThread(IThread *pThread, const ThreadParams *params)
+{
+	if (params == NULL)
+		params = &g_defparams;
+
+	PosixThreader::ThreadHandle *pHandle = 
+		new PosixThreader::ThreadHandle(this, pThread, params);
+
+	pthread_mutex_lock(&pHandle->m_runlock);
+
+	int err;
+	err = pthread_create(&pHandle->m_thread, NULL, Posix_ThreadGate, (void *)pHandle);	
+
+	if (err != 0)
+	{
+		pthread_mutex_unlock(&pHandle->m_runlock);
+		delete pHandle;
+		return NULL;
+	}
+
+	//Don't bother setting priority...
+
+	if (!(pHandle->m_params.flags & Thread_CreateSuspended))
+	{
+		pHandle->m_state = Thread_Running;
+		err = pthread_mutex_unlock(&pHandle->m_runlock);
+		if (err != 0)
+			pHandle->m_state = Thread_Paused;
+	}
+
+	return pHandle;
+}
+
+IEventSignal *PosixThreader::MakeEventSignal()
+{
+	return new PosixEventSignal();
+}
+
+/*****************
+**** Mutexes ****
+*****************/
+
+PosixThreader::PosixMutex::~PosixMutex()
+{
+	pthread_mutex_destroy(&m_mutex);
+}
+
+bool PosixThreader::PosixMutex::TryLock()
+{
+	int err = pthread_mutex_trylock(&m_mutex);
+
+	return (err == 0);
+}
+
+void PosixThreader::PosixMutex::Lock()
+{
+	pthread_mutex_lock(&m_mutex);
+}
+
+void PosixThreader::PosixMutex::Unlock()
+{
+	pthread_mutex_unlock(&m_mutex);
+}
+
+void PosixThreader::PosixMutex::DestroyThis()
+{
+	delete this;
+}
+
+/******************
+* Thread Handles *
+******************/
+
+PosixThreader::ThreadHandle::ThreadHandle(IThreader *parent, IThread *run, const ThreadParams *params) : 
+	m_parent(parent), m_run(run), m_params(*params), m_state(Thread_Paused)
+{
+	pthread_mutex_init(&m_runlock, NULL);
+	pthread_mutex_init(&m_statelock, NULL);
+}
+
+PosixThreader::ThreadHandle::~ThreadHandle()
+{
+	pthread_mutex_destroy(&m_runlock);
+	pthread_mutex_destroy(&m_statelock);
+}
+
+bool PosixThreader::ThreadHandle::WaitForThread()
+{
+	void *arg;
+	
+	if (pthread_join(m_thread, &arg) != 0)
+		return false;
+
+	return true;
+}
+
+ThreadState PosixThreader::ThreadHandle::GetState()
+{
+	ThreadState state;
+
+	pthread_mutex_lock(&m_statelock);
+	state = m_state;
+	pthread_mutex_unlock(&m_statelock);
+
+	return state;
+}
+
+IThreadCreator *PosixThreader::ThreadHandle::Parent()
+{
+	return m_parent;
+}
+
+void PosixThreader::ThreadHandle::DestroyThis()
+{
+	if (m_params.flags & Thread_AutoRelease)
+		return;
+
+	delete this;
+}
+
+void PosixThreader::ThreadHandle::GetParams(ThreadParams *ptparams)
+{
+	if (!ptparams)
+		return;
+
+	*ptparams = m_params;
+}
+
+ThreadPriority PosixThreader::ThreadHandle::GetPriority()
+{
+	return ThreadPrio_Normal;
+}
+
+bool PosixThreader::ThreadHandle::SetPriority(ThreadPriority prio)
+{
+	return (prio == ThreadPrio_Normal);
+}
+
+bool PosixThreader::ThreadHandle::Unpause()
+{
+	if (m_state != Thread_Paused)
+		return false;
+
+	m_state = Thread_Running;
+
+	if (pthread_mutex_unlock(&m_runlock) != 0)
+	{
+		m_state = Thread_Paused;
+		return false;
+	}
+
+	return true;
+}
+
+/*****************
+ * EVENT SIGNALS *
+ *****************/
+
+PosixThreader::PosixEventSignal::PosixEventSignal()
+{
+	pthread_cond_init(&m_cond, NULL);
+	pthread_mutex_init(&m_mutex, NULL);
+}
+
+PosixThreader::PosixEventSignal::~PosixEventSignal()
+{
+	pthread_cond_destroy(&m_cond);
+	pthread_mutex_destroy(&m_mutex);
+}
+
+void PosixThreader::PosixEventSignal::Wait()
+{
+	pthread_mutex_lock(&m_mutex);
+	pthread_cond_wait(&m_cond, &m_mutex);
+	pthread_mutex_unlock(&m_mutex);
+}
+
+void PosixThreader::PosixEventSignal::Signal()
+{
+	pthread_mutex_lock(&m_mutex);
+	pthread_cond_broadcast(&m_cond);
+	pthread_mutex_unlock(&m_mutex);
+}
+
+void PosixThreader::PosixEventSignal::DestroyThis()
+{
+        delete this;
+}
+