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comparison src/thread/pth/SDL_systhread.c @ 185:34d316d5e744

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Added support for the GNU Pth thread lib (thanks Mandin!)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 14 Sep 2001 04:34:15 +0000
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children e8157fcb3114
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184:3142d2ac11db 185:34d316d5e744
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 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 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 /* Pth thread management routines for SDL */
29
30 #include "SDL_error.h"
31 #include "SDL_thread.h"
32 #include "SDL_systhread.h"
33
34 #include <signal.h>
35 #include <pth.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 /* Set the thread attributes */
55 if ( pth_attr_init(&type) != 0 ) {
56 SDL_SetError("Couldn't initialize pth attributes");
57 return(-1);
58 }
59 pth_attr_set(&type, PTH_ATTR_JOINABLE, TRUE);
60
61 /* Create the thread and go! */
62 if ( pth_spawn( &type, RunThread, args) != 0 ) {
63 SDL_SetError("Not enough resources to create thread");
64 return(-1);
65 }
66 return(0);
67 }
68
69 void SDL_SYS_SetupThread(void)
70 {
71 int i;
72 sigset_t mask;
73
74 /* Mask asynchronous signals for this thread */
75 sigemptyset(&mask);
76 for ( i=0; sig_list[i]; ++i ) {
77 sigaddset(&mask, sig_list[i]);
78 }
79 pth_sigmask(SIG_BLOCK, &mask, 0);
80
81 /* Allow ourselves to be asynchronously cancelled */
82 { int oldstate;
83 pth_cancel_state(PTH_CANCEL_ASYNCHRONOUS, &oldstate);
84 }
85 }
86
87 /* WARNING: This may not work for systems with 64-bit pid_t */
88 Uint32 SDL_ThreadID(void)
89 {
90 return((Uint32)pth_self());
91 }
92
93 void SDL_SYS_WaitThread(SDL_Thread *thread)
94 {
95 pth_join(thread->handle, 0);
96 }
97
98 void SDL_SYS_KillThread(SDL_Thread *thread)
99 {
100 pth_cancel(thread->handle);
101 pth_join(thread->handle, NULL);
102 }