[sdl_omap.git] / src / thread / pth / SDL_systhread.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/*
 *	GNU pth threads
 *
 *	Patrice Mandin
 */

#include <pth.h>
#include <signal.h>

#include "SDL_thread.h"
#include "../SDL_thread_c.h"
#include "../SDL_systhread.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;

	/* Create a new attribute */
	type = pth_attr_new();
	if ( type == NULL ) {
		SDL_SetError("Couldn't initialize pth attributes");
		return(-1);
	}
	pth_attr_set(type, PTH_ATTR_JOINABLE, TRUE);

	/* Create the thread and go! */
	thread->handle = pth_spawn(type, RunThread, args);
	if ( thread->handle == NULL ) {
		SDL_SetError("Not enough resources to create thread");
		return(-1);
	}
	return(0);
}

void SDL_SYS_SetupThread(void)
{
	int i;
	sigset_t mask;
	int oldstate;

	/* 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 */
	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, NULL);
}

void SDL_SYS_KillThread(SDL_Thread *thread)
{
	pth_cancel(thread->handle);
	pth_join(thread->handle, NULL);
}
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 Sam Lantinga
	4
	5	This library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	This library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with this library; if not, write to the Free Software
	17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18
	19	Sam Lantinga
	20	slouken@libsdl.org
	21	*/
	22	#include "SDL_config.h"
	23
	24	/*
	25	* GNU pth threads
	26	*
	27	* Patrice Mandin
	28	*/
	29
	30	#include <pth.h>
	31	#include <signal.h>
	32
	33	#include "SDL_thread.h"
	34	#include "../SDL_thread_c.h"
	35	#include "../SDL_systhread.h"
	36
	37	/* List of signals to mask in the subthreads */
	38	static int sig_list[] = {
	39	SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
	40	SIGVTALRM, SIGPROF, 0
	41	};
	42
	43	static void RunThread(void data)
	44	{
	45	SDL_RunThread(data);
	46	pth_exit((void*)0);
	47	return((void )0); / Prevent compiler warning */
	48	}
	49
	50	int SDL_SYS_CreateThread(SDL_Thread thread, void args)
	51	{
	52	pth_attr_t type;
	53
	54	/* Create a new attribute */
	55	type = pth_attr_new();
	56	if ( type == NULL ) {
	57	SDL_SetError("Couldn't initialize pth attributes");
	58	return(-1);
	59	}
	60	pth_attr_set(type, PTH_ATTR_JOINABLE, TRUE);
	61
	62	/* Create the thread and go! */
	63	thread->handle = pth_spawn(type, RunThread, args);
	64	if ( thread->handle == NULL ) {
65	SDL_SetError("Not enough resources to create thread");
66	return(-1);
67	}
68	return(0);
69	}
70
71	void SDL_SYS_SetupThread(void)
72	{
73	int i;
74	sigset_t mask;
75	int oldstate;
76
77	/* Mask asynchronous signals for this thread */
78	sigemptyset(&mask);
79	for ( i=0; sig_list[i]; ++i ) {
80	sigaddset(&mask, sig_list[i]);
81	}
82	pth_sigmask(SIG_BLOCK, &mask, 0);
83
84	/* Allow ourselves to be asynchronously cancelled */
85	pth_cancel_state(PTH_CANCEL_ASYNCHRONOUS, &oldstate);
86	}
87
88	/* WARNING: This may not work for systems with 64-bit pid_t */
89	Uint32 SDL_ThreadID(void)
90	{
91	return((Uint32)pth_self());
92	}
93
94	void SDL_SYS_WaitThread(SDL_Thread *thread)
95	{
96	pth_join(thread->handle, NULL);
97	}
98
99	void SDL_SYS_KillThread(SDL_Thread *thread)
100	{
101	pth_cancel(thread->handle);
102	pth_join(thread->handle, NULL);
103	}