Mercurial > sdl-ios-xcode
diff src/thread/riscos/SDL_systhread.c @ 955:d74fbf56f2f6
Date: Fri, 25 Jun 2004 13:29:15 +0100
From: "alan buckley"
Subject: Modification for RISC OS version of SDL
Ive attached a zip file with the changes to this email, it contains the
following:
The file sdldiff.txt is the output from cvs diff u. .
The directory thread/riscos contains all the new files to support threading.
Readme.riscos is a new readme file to add.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 17 Sep 2004 13:20:10 +0000 |
parents | |
children | c9b51268668f |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/thread/riscos/SDL_systhread.c Fri Sep 17 13:20:10 2004 +0000 @@ -0,0 +1,149 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2004 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@libsdl.org +*/ + +/* RISC OS version based on pthreads linux source */ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id$"; +#endif + +#include "SDL_error.h" +#include "SDL_thread.h" +#include "SDL_systhread.h" + +#ifdef DISABLE_THREADS + +int SDL_SYS_CreateThread(SDL_Thread *thread, void *args) +{ + SDL_SetError("Threads have not been compiled into this version of the library"); + return(-1); +} + +void SDL_SYS_SetupThread(void) +{ + return; +} + +Uint32 SDL_ThreadID(void) +{ + return(0); +} + +void SDL_SYS_WaitThread(SDL_Thread *thread) +{ + return; +} + +void SDL_SYS_KillThread(SDL_Thread *thread) +{ + return; +} + +#else + +#include <signal.h> + +/* List of signals to mask in the subthreads */ +static int sig_list[] = { + SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH, + SIGVTALRM, SIGPROF, 0 +}; + +#include <pthread.h> + +int riscos_using_threads = 0; +Uint32 riscos_main_thread = 0; /* Thread running events */ + +static void *RunThread(void *data) +{ + SDL_RunThread(data); + pthread_exit((void*)0); + return((void *)0); /* Prevent compiler warning */ +} + +int SDL_SYS_CreateThread(SDL_Thread *thread, void *args) +{ + pthread_attr_t type; + + /* Set the thread attributes */ + if ( pthread_attr_init(&type) != 0 ) { + SDL_SetError("Couldn't initialize pthread attributes"); + return(-1); + } + pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE); + + /* Create the thread and go! */ + if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) { + SDL_SetError("Not enough resources to create thread"); + return(-1); + } + + if (riscos_using_threads == 0) + { + riscos_using_threads = 1; + riscos_main_thread = SDL_ThreadID(); + } + + 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]); + } + pthread_sigmask(SIG_BLOCK, &mask, 0); + +#ifdef PTHREAD_CANCEL_ASYNCHRONOUS + /* Allow ourselves to be asynchronously cancelled */ + { int oldstate; + pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate); + } +#endif +} + +Uint32 SDL_ThreadID(void) +{ + return((Uint32)pthread_self()); +} + +void SDL_SYS_WaitThread(SDL_Thread *thread) +{ + pthread_join(thread->handle, 0); +} + +void SDL_SYS_KillThread(SDL_Thread *thread) +{ +#ifdef PTHREAD_CANCEL_ASYNCHRONOUS + pthread_cancel(thread->handle); +#else + pthread_kill(thread->handle, SIGKILL); +#endif +} + +#endif