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/*
*
* (C) 2003-2012 Anope Team
* Contact us at team@anope.org
*
* Please read COPYING and README for further details.
*
* Based on the original code of Epona by Lara.
* Based on the original code of Services by Andy Church.
*/
#include "services.h"
#include "threadengine.h"
#include "anope.h"
#ifndef _WIN32
#include <pthread.h>
#endif
static inline pthread_attr_t *get_engine_attr()
{
/* Threadengine attributes used by this thread engine */
static pthread_attr_t attr;
static bool inited = false;
if (inited == false)
{
if (pthread_attr_init(&attr))
throw CoreException("Error calling pthread_attr_init");
if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE))
throw CoreException("Unable to mark threads as joinable");
inited = true;
}
return &attr;
}
/** Entry point used for the threads
* @param parameter A Thread* cast to a void*
*/
static void *entry_point(void *parameter)
{
Thread *thread = static_cast<Thread *>(parameter);
thread->Run();
thread->SetExitState();
pthread_exit(0);
return NULL;
}
/** Threads constructor
*/
Thread::Thread() : exit(false)
{
}
/** Threads destructor
*/
Thread::~Thread()
{
}
/** Join to the thread, sets the exit state to true
*/
void Thread::Join()
{
this->SetExitState();
pthread_join(Handle, NULL);
}
/** Sets the exit state as true informing the thread we want it to shut down
*/
void Thread::SetExitState()
{
this->Notify();
exit = true;
}
/** Exit the thread. Note that the thread still must be joined to free resources!
*/
void Thread::Exit()
{
this->SetExitState();
pthread_exit(0);
}
/** Launch the thread
*/
void Thread::Start()
{
if (pthread_create(&this->Handle, get_engine_attr(), entry_point, this))
{
this->SetFlag(SF_DEAD);
throw CoreException("Unable to create thread: " + Anope::LastError());
}
}
/** Returns the exit state of the thread
* @return true if we want to exit
*/
bool Thread::GetExitState() const
{
return exit;
}
/** Called when this thread should be joined to
*/
void Thread::OnNotify()
{
this->Join();
this->SetFlag(SF_DEAD);
}
/** Constructor
*/
Mutex::Mutex()
{
pthread_mutex_init(&mutex, NULL);
}
/** Destructor
*/
Mutex::~Mutex()
{
pthread_mutex_destroy(&mutex);
}
/** Attempt to lock the mutex, will hang until a lock can be achieved
*/
void Mutex::Lock()
{
pthread_mutex_lock(&mutex);
}
/** Unlock the mutex, it must be locked first
*/
void Mutex::Unlock()
{
pthread_mutex_unlock(&mutex);
}
/** Attempt to lock the mutex, will return true on success and false on fail
* Does not block
* @return true or false
*/
bool Mutex::TryLock()
{
return pthread_mutex_trylock(&mutex) == 0;
}
/** Constructor
*/
Condition::Condition() : Mutex()
{
pthread_cond_init(&cond, NULL);
}
/** Destructor
*/
Condition::~Condition()
{
pthread_cond_destroy(&cond);
}
/** Called to wakeup the waiter
*/
void Condition::Wakeup()
{
pthread_cond_signal(&cond);
}
/** Called to wait for a Wakeup() call
*/
void Condition::Wait()
{
pthread_cond_wait(&cond, &mutex);
}
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