mirror of
https://github.com/zeromq/libzmq.git
synced 2025-01-09 11:17:34 +01:00
128 lines
3.0 KiB
C++
128 lines
3.0 KiB
C++
/*
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Copyright (c) 2007-2014 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "thread.hpp"
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#include "err.hpp"
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#include "platform.hpp"
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#ifdef ZMQ_HAVE_WINDOWS
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extern "C"
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{
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#if defined _WIN32_WCE
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static DWORD thread_routine (LPVOID arg_)
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#else
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static unsigned int __stdcall thread_routine (void *arg_)
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#endif
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{
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zmq::thread_t *self = (zmq::thread_t*) arg_;
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self->tfn (self->arg);
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return 0;
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}
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}
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void zmq::thread_t::start (thread_fn *tfn_, void *arg_)
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{
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tfn = tfn_;
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arg = arg_;
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#if defined _WIN32_WCE
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descriptor = (HANDLE) CreateThread (NULL, 0,
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&::thread_routine, this, 0 , NULL);
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#else
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descriptor = (HANDLE) _beginthreadex (NULL, 0,
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&::thread_routine, this, 0 , NULL);
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#endif
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win_assert (descriptor != NULL);
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}
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void zmq::thread_t::stop ()
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{
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DWORD rc = WaitForSingleObject (descriptor, INFINITE);
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win_assert (rc != WAIT_FAILED);
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BOOL rc2 = CloseHandle (descriptor);
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win_assert (rc2 != 0);
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}
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#else
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#include <signal.h>
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#include <sstream>
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extern "C"
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{
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static void *thread_routine (void *arg_)
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{
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#if !defined ZMQ_HAVE_OPENVMS && !defined ZMQ_HAVE_ANDROID
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// Following code will guarantee more predictable latencies as it'll
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// disallow any signal handling in the I/O thread.
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sigset_t signal_set;
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int rc = sigfillset (&signal_set);
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errno_assert (rc == 0);
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rc = pthread_sigmask (SIG_BLOCK, &signal_set, NULL);
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posix_assert (rc);
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#endif
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zmq::thread_t *self = (zmq::thread_t*) arg_;
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self->tfn (self->arg);
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return NULL;
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}
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}
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bool getenvi (const char *env_, int &result_)
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{
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char *str = getenv (env_);
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if (str == NULL)
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return false;
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std::stringstream ss(str);
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return ss >> result_;
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}
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void zmq::thread_t::start (thread_fn *tfn_, void *arg_)
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{
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tfn = tfn_;
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arg = arg_;
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int rc = pthread_create (&descriptor, NULL, thread_routine, this);
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posix_assert (rc);
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int prio;
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if (getenvi ("ZMQ_THREAD_PRIO", prio)) {
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int policy = SCHED_RR;
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getenvi ("ZMQ_THREAD_POLICY", policy);
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struct sched_param param;
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param.sched_priority = prio;
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rc = pthread_setschedparam (descriptor, policy, ¶m);
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posix_assert (rc);
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}
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}
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void zmq::thread_t::stop ()
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{
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int rc = pthread_join (descriptor, NULL);
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posix_assert (rc);
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}
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#endif
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