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/*
Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
This file is part of libzmq, the ZeroMQ core engine in C++.
libzmq is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
As a special exception, the Contributors give you permission to link
this library with independent modules to produce an executable,
regardless of the license terms of these independent modules, and to
copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the
terms and conditions of the license of that module. An independent
module is a module which is not derived from or based on this library.
If you modify this library, you must extend this exception to your
version of the library.
libzmq 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 "thread.hpp"
#include "err.hpp"
#include "platform.hpp"
#ifdef ZMQ_HAVE_WINDOWS
extern "C"
{
#if defined _WIN32_WCE
static DWORD thread_routine (LPVOID arg_)
#else
static unsigned int __stdcall thread_routine (void *arg_)
#endif
{
zmq::thread_t *self = (zmq::thread_t*) arg_;
self->tfn (self->arg);
return 0;
}
}
void zmq::thread_t::start (thread_fn *tfn_, void *arg_)
{
tfn = tfn_;
arg = arg_;
#if defined _WIN32_WCE
descriptor = (HANDLE) CreateThread (NULL, 0,
&::thread_routine, this, 0 , NULL);
#else
descriptor = (HANDLE) _beginthreadex (NULL, 0,
&::thread_routine, this, 0 , NULL);
#endif
win_assert (descriptor != NULL);
}
void zmq::thread_t::stop ()
{
DWORD rc = WaitForSingleObject (descriptor, INFINITE);
win_assert (rc != WAIT_FAILED);
BOOL rc2 = CloseHandle (descriptor);
win_assert (rc2 != 0);
}
void zmq::thread_t::setSchedulingParameters(int priority_, int schedulingPolicy_)
{
// not implemented
}
#else
#include <signal.h>
extern "C"
{
static void *thread_routine (void *arg_)
{
#if !defined ZMQ_HAVE_OPENVMS && !defined ZMQ_HAVE_ANDROID
// Following code will guarantee more predictable latencies as it'll
// disallow any signal handling in the I/O thread.
sigset_t signal_set;
int rc = sigfillset (&signal_set);
errno_assert (rc == 0);
rc = pthread_sigmask (SIG_BLOCK, &signal_set, NULL);
posix_assert (rc);
#endif
zmq::thread_t *self = (zmq::thread_t*) arg_;
self->tfn (self->arg);
return NULL;
}
}
void zmq::thread_t::start (thread_fn *tfn_, void *arg_)
{
tfn = tfn_;
arg = arg_;
int rc = pthread_create (&descriptor, NULL, thread_routine, this);
posix_assert (rc);
}
void zmq::thread_t::stop ()
{
int rc = pthread_join (descriptor, NULL);
posix_assert (rc);
}
void zmq::thread_t::setSchedulingParameters(int priority_, int schedulingPolicy_)
{
#if !defined ZMQ_HAVE_ZOS
int policy = 0;
struct sched_param param;
int rc = pthread_getschedparam(descriptor, &policy, ¶m);
posix_assert (rc);
if(priority_ != -1)
{
param.sched_priority = priority_;
}
if(schedulingPolicy_ != -1)
{
policy = schedulingPolicy_;
}
rc = pthread_setschedparam(descriptor, policy, ¶m);
posix_assert (rc);
#endif
}
#endif
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