godot/drivers/unix/thread_posix.cpp
2016-01-09 15:56:31 +01:00

141 lines
4.4 KiB
C++

/*************************************************************************/
/* thread_posix.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "thread_posix.h"
#if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
#ifdef PTHREAD_BSD_SET_NAME
#include <pthread_np.h>
#endif
#include "os/memory.h"
Thread::ID ThreadPosix::get_ID() const {
return id;
}
Thread* ThreadPosix::create_thread_posix() {
return memnew( ThreadPosix );
}
void *ThreadPosix::thread_callback(void *userdata) {
ThreadPosix *t=reinterpret_cast<ThreadPosix*>(userdata);
t->id=(ID)pthread_self();
t->callback(t->user);
return NULL;
}
Thread* ThreadPosix::create_func_posix(ThreadCreateCallback p_callback,void *p_user,const Settings&) {
ThreadPosix *tr= memnew(ThreadPosix);
tr->callback=p_callback;
tr->user=p_user;
pthread_attr_init(&tr->pthread_attr);
pthread_attr_setdetachstate(&tr->pthread_attr, PTHREAD_CREATE_JOINABLE);
pthread_attr_setstacksize(&tr->pthread_attr, 256 * 1024);
pthread_create(&tr->pthread, &tr->pthread_attr, thread_callback, tr);
return tr;
}
Thread::ID ThreadPosix::get_thread_ID_func_posix() {
return (ID)pthread_self();
}
void ThreadPosix::wait_to_finish_func_posix(Thread* p_thread) {
ThreadPosix *tp=static_cast<ThreadPosix*>(p_thread);
ERR_FAIL_COND(!tp);
ERR_FAIL_COND(tp->pthread==0);
pthread_join(tp->pthread,NULL);
tp->pthread=0;
}
Error ThreadPosix::set_name(const String& p_name) {
ERR_FAIL_COND_V(pthread == 0, ERR_UNCONFIGURED);
#ifdef PTHREAD_NO_RENAME
return ERR_UNAVAILABLE;
#else
#ifdef PTHREAD_RENAME_SELF
// check if thread is the same as caller
int caller = Thread::get_caller_ID();
int self = get_ID();
if (caller != self) {
ERR_EXPLAIN("On this platform, thread can only be renamed with calls from the threads to be renamed.");
ERR_FAIL_V(ERR_UNAVAILABLE);
return ERR_UNAVAILABLE;
};
int err = pthread_setname_np(p_name.utf8().get_data());
#else
#ifdef PTHREAD_BSD_SET_NAME
pthread_set_name_np(pthread, p_name.utf8().get_data());
int err = 0; // Open/FreeBSD ignore errors in this function
#else
int err = pthread_setname_np(pthread, p_name.utf8().get_data());
#endif // PTHREAD_BSD_SET_NAME
#endif // PTHREAD_RENAME_SELF
return err == 0 ? OK : ERR_INVALID_PARAMETER;
#endif // PTHREAD_NO_RENAME
};
void ThreadPosix::make_default() {
create_func=create_func_posix;
get_thread_ID_func=get_thread_ID_func_posix;
wait_to_finish_func=wait_to_finish_func_posix;
}
ThreadPosix::ThreadPosix() {
pthread=0;
}
ThreadPosix::~ThreadPosix() {
}
#endif