f0b1c9b859
Implemented thread priority as the 'nice' value on Linux. High priority threads require root permissions (you shouldn't give your game root permissions though!)
117 lines
2.7 KiB
C
117 lines
2.7 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* BeOS thread management routines for SDL */
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#include <stdio.h>
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#include <signal.h>
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#include <be/kernel/OS.h>
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#include "SDL_mutex.h"
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#include "SDL_thread.h"
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#include "../SDL_thread_c.h"
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#include "../SDL_systhread.h"
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static int sig_list[] = {
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SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGWINCH, 0
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};
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void
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SDL_MaskSignals(sigset_t * omask)
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{
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sigset_t mask;
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int i;
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sigemptyset(&mask);
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for (i = 0; sig_list[i]; ++i) {
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sigaddset(&mask, sig_list[i]);
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}
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sigprocmask(SIG_BLOCK, &mask, omask);
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}
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void
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SDL_UnmaskSignals(sigset_t * omask)
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{
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sigprocmask(SIG_SETMASK, omask, NULL);
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}
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static int32
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RunThread(void *data)
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{
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SDL_RunThread(data);
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return (0);
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}
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int
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SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
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{
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/* Create the thread and go! */
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thread->handle = spawn_thread(RunThread, "SDL", B_NORMAL_PRIORITY, args);
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if ((thread->handle == B_NO_MORE_THREADS) ||
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(thread->handle == B_NO_MEMORY)) {
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SDL_SetError("Not enough resources to create thread");
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return (-1);
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}
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resume_thread(thread->handle);
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return (0);
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}
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void
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SDL_SYS_SetupThread(void)
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{
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/* Mask asynchronous signals for this thread */
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SDL_MaskSignals(NULL);
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}
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SDL_threadID
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SDL_ThreadID(void)
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{
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return ((SDL_threadID) find_thread(NULL));
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}
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int
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SDL_SYS_SetThreadPriority(SDL_Thread * thread, SDL_ThreadPriority priority)
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{
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int32 value;
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if (priority == SDL_THREAD_PRIORITY_LOW) {
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value = B_LOW_PRIORITY;
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} else if (priority == SDL_THREAD_PRIORITY_HIGH) {
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value = B_URGENT_DISPLAY_PRIORITY;
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} else {
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value = B_NORMAL_PRIORITY;
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}
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set_thread_priority(find_thread(NULL), value);
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return 0;
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}
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void
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SDL_SYS_WaitThread(SDL_Thread * thread)
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{
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status_t the_status;
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wait_for_thread(thread->handle, &the_status);
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}
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/* vi: set ts=4 sw=4 expandtab: */
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