src/thread/pthread/SDL_systhread.c
author Sam Lantinga <slouken@libsdl.org>
Tue, 21 Feb 2006 08:46:50 +0000
changeset 1402 d910939febfa
parent 1361 19418e4422cb
child 1459 1e8582152d44
permissions -rw-r--r--
Use consistent identifiers for the various platforms we support.
Make sure every source file includes SDL_config.h, so the proper system
headers are chosen.
slouken@1361
     1
/*
slouken@1361
     2
    SDL - Simple DirectMedia Layer
slouken@1361
     3
    Copyright (C) 1997-2006 Sam Lantinga
slouken@1361
     4
slouken@1361
     5
    This library is free software; you can redistribute it and/or
slouken@1361
     6
    modify it under the terms of the GNU Lesser General Public
slouken@1361
     7
    License as published by the Free Software Foundation; either
slouken@1361
     8
    version 2.1 of the License, or (at your option) any later version.
slouken@1361
     9
slouken@1361
    10
    This library is distributed in the hope that it will be useful,
slouken@1361
    11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
slouken@1361
    12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
slouken@1361
    13
    Lesser General Public License for more details.
slouken@1361
    14
slouken@1361
    15
    You should have received a copy of the GNU Lesser General Public
slouken@1361
    16
    License along with this library; if not, write to the Free Software
slouken@1361
    17
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
slouken@1361
    18
slouken@1361
    19
    Sam Lantinga
slouken@1361
    20
    slouken@libsdl.org
slouken@1361
    21
*/
slouken@1402
    22
#include "SDL_config.h"
slouken@1361
    23
slouken@1361
    24
#include <pthread.h>
slouken@1361
    25
#include <signal.h>
slouken@1361
    26
slouken@1361
    27
#include "SDL_thread.h"
slouken@1361
    28
#include "../SDL_thread_c.h"
slouken@1361
    29
#include "../SDL_systhread.h"
slouken@1361
    30
slouken@1361
    31
/* List of signals to mask in the subthreads */
slouken@1361
    32
static int sig_list[] = {
slouken@1361
    33
	SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
slouken@1361
    34
	SIGVTALRM, SIGPROF, 0
slouken@1361
    35
};
slouken@1361
    36
slouken@1361
    37
slouken@1361
    38
static void *RunThread(void *data)
slouken@1361
    39
{
slouken@1361
    40
	SDL_RunThread(data);
slouken@1361
    41
	pthread_exit((void*)0);
slouken@1361
    42
	return((void *)0);		/* Prevent compiler warning */
slouken@1361
    43
}
slouken@1361
    44
slouken@1361
    45
int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
slouken@1361
    46
{
slouken@1361
    47
	pthread_attr_t type;
slouken@1361
    48
slouken@1361
    49
	/* Set the thread attributes */
slouken@1361
    50
	if ( pthread_attr_init(&type) != 0 ) {
slouken@1361
    51
		SDL_SetError("Couldn't initialize pthread attributes");
slouken@1361
    52
		return(-1);
slouken@1361
    53
	}
slouken@1361
    54
	pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
slouken@1361
    55
slouken@1361
    56
	/* Create the thread and go! */
slouken@1361
    57
	if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
slouken@1361
    58
		SDL_SetError("Not enough resources to create thread");
slouken@1361
    59
		return(-1);
slouken@1361
    60
	}
slouken@1361
    61
	return(0);
slouken@1361
    62
}
slouken@1361
    63
slouken@1361
    64
void SDL_SYS_SetupThread(void)
slouken@1361
    65
{
slouken@1361
    66
	int i;
slouken@1361
    67
	sigset_t mask;
slouken@1361
    68
slouken@1361
    69
	/* Mask asynchronous signals for this thread */
slouken@1361
    70
	sigemptyset(&mask);
slouken@1361
    71
	for ( i=0; sig_list[i]; ++i ) {
slouken@1361
    72
		sigaddset(&mask, sig_list[i]);
slouken@1361
    73
	}
slouken@1361
    74
	pthread_sigmask(SIG_BLOCK, &mask, 0);
slouken@1361
    75
slouken@1361
    76
#ifdef PTHREAD_CANCEL_ASYNCHRONOUS
slouken@1361
    77
	/* Allow ourselves to be asynchronously cancelled */
slouken@1361
    78
	{ int oldstate;
slouken@1361
    79
		pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
slouken@1361
    80
	}
slouken@1361
    81
#endif
slouken@1361
    82
}
slouken@1361
    83
slouken@1361
    84
/* WARNING:  This may not work for systems with 64-bit pid_t */
slouken@1361
    85
Uint32 SDL_ThreadID(void)
slouken@1361
    86
{
slouken@1361
    87
	return((Uint32)pthread_self());
slouken@1361
    88
}
slouken@1361
    89
slouken@1361
    90
void SDL_SYS_WaitThread(SDL_Thread *thread)
slouken@1361
    91
{
slouken@1361
    92
	pthread_join(thread->handle, 0);
slouken@1361
    93
}
slouken@1361
    94
slouken@1361
    95
void SDL_SYS_KillThread(SDL_Thread *thread)
slouken@1361
    96
{
slouken@1361
    97
#ifdef PTHREAD_CANCEL_ASYNCHRONOUS
slouken@1361
    98
	pthread_cancel(thread->handle);
slouken@1361
    99
#else
slouken@1402
   100
#ifdef __FREEBSD__
slouken@1361
   101
#warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2
slouken@1361
   102
#endif
slouken@1361
   103
	pthread_kill(thread->handle, SIGKILL);
slouken@1361
   104
#endif
slouken@1361
   105
}