Mercurial > sdl-ios-xcode
diff src/thread/pth/SDL_systhread.c @ 185:34d316d5e744
Added support for the GNU Pth thread lib (thanks Mandin!)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 14 Sep 2001 04:34:15 +0000 |
parents | |
children | e8157fcb3114 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/thread/pth/SDL_systhread.c Fri Sep 14 04:34:15 2001 +0000 @@ -0,0 +1,102 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@devolution.com +*/ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id$"; +#endif + +/* Pth thread management routines for SDL */ + +#include "SDL_error.h" +#include "SDL_thread.h" +#include "SDL_systhread.h" + +#include <signal.h> +#include <pth.h> + +/* List of signals to mask in the subthreads */ +static int sig_list[] = { + SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH, + SIGVTALRM, SIGPROF, 0 +}; + +static void *RunThread(void *data) +{ + SDL_RunThread(data); + pth_exit((void*)0); + return((void *)0); /* Prevent compiler warning */ +} + +int SDL_SYS_CreateThread(SDL_Thread *thread, void *args) +{ + pth_attr_t type; + + /* Set the thread attributes */ + if ( pth_attr_init(&type) != 0 ) { + SDL_SetError("Couldn't initialize pth attributes"); + return(-1); + } + pth_attr_set(&type, PTH_ATTR_JOINABLE, TRUE); + + /* Create the thread and go! */ + if ( pth_spawn( &type, RunThread, args) != 0 ) { + SDL_SetError("Not enough resources to create thread"); + return(-1); + } + return(0); +} + +void SDL_SYS_SetupThread(void) +{ + int i; + sigset_t mask; + + /* Mask asynchronous signals for this thread */ + sigemptyset(&mask); + for ( i=0; sig_list[i]; ++i ) { + sigaddset(&mask, sig_list[i]); + } + pth_sigmask(SIG_BLOCK, &mask, 0); + + /* Allow ourselves to be asynchronously cancelled */ + { int oldstate; + pth_cancel_state(PTH_CANCEL_ASYNCHRONOUS, &oldstate); + } +} + +/* WARNING: This may not work for systems with 64-bit pid_t */ +Uint32 SDL_ThreadID(void) +{ + return((Uint32)pth_self()); +} + +void SDL_SYS_WaitThread(SDL_Thread *thread) +{ + pth_join(thread->handle, 0); +} + +void SDL_SYS_KillThread(SDL_Thread *thread) +{ + pth_cancel(thread->handle); + pth_join(thread->handle, NULL); +}