/*+
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    SDL - Simple DirectMedia Layer+
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    Copyright (C) 1997-2006 Sam Lantinga+
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+
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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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+
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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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+
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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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+
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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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+
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/*+
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 *	GNU pth threads+
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 *+
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 *	Patrice Mandin+
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 */+
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+
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#include "SDL_thread.h"+
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#include "../SDL_systhread.h"+
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+
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#include <pth.h>+
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#include <signal.h>+
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+
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/* List of signals to mask in the subthreads */+
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static int sig_list[] = {+
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	SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,+
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	SIGVTALRM, SIGPROF, 0+
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};+
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+
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static void *RunThread(void *data)+
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{+
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	SDL_RunThread(data);+
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	pth_exit((void*)0);+
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	return((void *)0);		/* Prevent compiler warning */+
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}+
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+
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int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)+
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{+
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	pth_attr_t type;+
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+
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	/* Create a new attribute */+
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	type = pth_attr_new();+
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	if ( type == NULL ) {+
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		SDL_SetError("Couldn't initialize pth attributes");+
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		return(-1);+
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	}+
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	pth_attr_set(type, PTH_ATTR_JOINABLE, TRUE);+
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+
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	/* Create the thread and go! */+
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	thread->handle = pth_spawn(type, RunThread, args);+
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	if ( thread->handle == NULL ) {+
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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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	return(0);+
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}+
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+
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void SDL_SYS_SetupThread(void)+
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{+
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	int i;+
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	sigset_t mask;+
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	int oldstate;+
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+
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	/* Mask asynchronous signals for this thread */+
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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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	pth_sigmask(SIG_BLOCK, &mask, 0);+
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+
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	/* Allow ourselves to be asynchronously cancelled */+
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	pth_cancel_state(PTH_CANCEL_ASYNCHRONOUS, &oldstate);+
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}+
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+
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/* WARNING:  This may not work for systems with 64-bit pid_t */+
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Uint32 SDL_ThreadID(void)+
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{+
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	return((Uint32)pth_self());+
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}+
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+
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void SDL_SYS_WaitThread(SDL_Thread *thread)+
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{+
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	pth_join(thread->handle, NULL);+
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}+
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+
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void SDL_SYS_KillThread(SDL_Thread *thread)+
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{+
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	pth_cancel(thread->handle);+
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	pth_join(thread->handle, NULL);+
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}+
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