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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "threadengines/threadengine_pthread.h"
#include <pthread.h>
#include <signal.h>
#include <fcntl.h>
ThreadEngine::ThreadEngine(InspIRCd* Instance)
{
}
static void* entry_point(void* parameter)
{
/* Recommended by nenolod, signal safety on a per-thread basis */
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGPIPE);
pthread_sigmask(SIG_BLOCK, &set, NULL);
Thread* pt = reinterpret_cast<Thread*>(parameter);
pt->Run();
return parameter;
}
void ThreadEngine::Start(Thread* thread)
{
ThreadData* data = new ThreadData;
thread->state = data;
if (pthread_create(&data->pthread_id, NULL, entry_point, thread) != 0)
{
thread->state = NULL;
delete data;
throw CoreException("Unable to create new thread: " + std::string(strerror(errno)));
}
}
ThreadEngine::~ThreadEngine()
{
}
void ThreadData::FreeThread(Thread* thread)
{
thread->SetExitFlag();
pthread_join(pthread_id, NULL);
}
#ifdef HAS_EVENTFD
#include <sys/eventfd.h>
class ThreadSignalSocket : public BufferedSocket
{
SocketThread* parent;
public:
ThreadSignalSocket(SocketThread* p, InspIRCd* SI, int newfd) :
BufferedSocket(SI, newfd, const_cast<char*>("0.0.0.0")), parent(p) {}
~ThreadSignalSocket()
{
}
void Notify()
{
eventfd_write(fd, 1);
}
virtual bool OnDataReady()
{
eventfd_t data;
if (eventfd_read(fd, &data))
return false;
parent->OnNotify();
return true;
}
};
SocketThread::SocketThread(InspIRCd* SI)
{
int fd = eventfd(0, O_NONBLOCK);
if (fd < 0)
throw new CoreException("Could not create pipe " + std::string(strerror(errno)));
signal.sock = new ThreadSignalSocket(this, SI, fd);
}
#else
class ThreadSignalSocket : public BufferedSocket
{
SocketThread* parent;
int send_fd;
public:
ThreadSignalSocket(SocketThread* p, InspIRCd* SI, int recvfd, int sendfd) :
BufferedSocket(SI, recvfd, const_cast<char*>("0.0.0.0")), parent(p), send_fd(sendfd) {}
~ThreadSignalSocket()
{
close(send_fd);
}
void Notify()
{
char dummy = '*';
send(send_fd, &dummy, 1, 0);
}
virtual bool OnDataReady()
{
char data;
if (ServerInstance->SE->Recv(this, &data, 1, 0) <= 0)
return false;
parent->OnNotify();
return true;
}
};
SocketThread::SocketThread(InspIRCd* SI)
{
int fds[2];
if (pipe(fds))
throw new CoreException("Could not create pipe " + std::string(strerror(errno)));
signal.sock = new ThreadSignalSocket(this, SI, fds[0], fds[1]);
}
#endif
void SocketThread::NotifyParent()
{
signal.sock->Notify();
}
SocketThread::~SocketThread()
{
delete signal.sock;
}
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