barrier/lib/mt/CThread.cpp
crs 4c7e524896 Checkpointing centralized event queue stuff. Currently have:
an event queue and events, TCP sockets converted to use events,
unix multithreading and network stuff converted, and an X Windows
event queue subclass.
2004-01-24 16:09:25 +00:00

196 lines
3.5 KiB
C++

/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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 General Public License for more details.
*/
#include "CThread.h"
#include "XMT.h"
#include "XThread.h"
#include "CLog.h"
#include "IJob.h"
#include "CArch.h"
//
// CThread
//
CThread::CThread(IJob* job)
{
m_thread = ARCH->newThread(&CThread::threadFunc, job);
if (m_thread == NULL) {
// couldn't create thread
delete job;
throw XMTThreadUnavailable();
}
}
CThread::CThread(const CThread& thread)
{
m_thread = ARCH->copyThread(thread.m_thread);
}
CThread::CThread(CArchThread adoptedThread)
{
m_thread = adoptedThread;
}
CThread::~CThread()
{
ARCH->closeThread(m_thread);
}
CThread&
CThread::operator=(const CThread& thread)
{
// copy given thread and release ours
CArchThread copy = ARCH->copyThread(thread.m_thread);
ARCH->closeThread(m_thread);
// cut over
m_thread = copy;
return *this;
}
void
CThread::exit(void* result)
{
throw XThreadExit(result);
}
void
CThread::cancel()
{
ARCH->cancelThread(m_thread);
}
void
CThread::setPriority(int n)
{
ARCH->setPriorityOfThread(m_thread, n);
}
CThread
CThread::getCurrentThread()
{
return CThread(ARCH->newCurrentThread());
}
void
CThread::testCancel()
{
ARCH->testCancelThread();
}
bool
CThread::wait(double timeout) const
{
return ARCH->wait(m_thread, timeout);
}
CThread::EWaitResult
CThread::waitForEvent(double timeout) const
{
// IArchMultithread EWaitResults map directly to our EWaitResults
static const EWaitResult s_map[] = {
kEvent,
kExit,
kTimeout
};
return s_map[ARCH->waitForEvent(m_thread, timeout)];
}
void
CThread::unblock() const
{
ARCH->unblockThread(m_thread);
}
void*
CThread::getResult() const
{
if (wait())
return ARCH->getResultOfThread(m_thread);
else
return NULL;
}
IArchMultithread::ThreadID
CThread::getID() const
{
return ARCH->getIDOfThread(m_thread);
}
bool
CThread::operator==(const CThread& thread) const
{
return ARCH->isSameThread(m_thread, thread.m_thread);
}
bool
CThread::operator!=(const CThread& thread) const
{
return !ARCH->isSameThread(m_thread, thread.m_thread);
}
void*
CThread::threadFunc(void* vjob)
{
// get this thread's id for logging
IArchMultithread::ThreadID id;
{
CArchThread thread = ARCH->newCurrentThread();
id = ARCH->getIDOfThread(thread);
ARCH->closeThread(thread);
}
// get job
IJob* job = reinterpret_cast<IJob*>(vjob);
// run job
void* result = NULL;
try {
// go
LOG((CLOG_DEBUG1 "thread 0x%08x entry", id));
job->run();
LOG((CLOG_DEBUG1 "thread 0x%08x exit", id));
}
catch (XThreadCancel&) {
// client called cancel()
LOG((CLOG_DEBUG1 "caught cancel on thread 0x%08x", id));
delete job;
throw;
}
catch (XThreadExit& e) {
// client called exit()
result = e.m_result;
LOG((CLOG_DEBUG1 "caught exit on thread 0x%08x, result %p", id, result));
}
catch (XBase& e) {
LOG((CLOG_ERR "exception on thread 0x%08x: %s", id, e.what()));
delete job;
throw;
}
catch (...) {
LOG((CLOG_ERR "exception on thread 0x%08x: <unknown>", id));
delete job;
throw;
}
// done with job
delete job;
// return exit result
return result;
}