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comparison src/thread/pthread/SDL_systhread.c @ 1361:19418e4422cb

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New configure-based build system. Still work in progress, but much improved
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Feb 2006 10:11:48 +0000
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children d910939febfa
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1360:70a9cfb4cf1b 1361:19418e4422cb
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 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
23 #include <pthread.h>
24 #include <signal.h>
25
26 #include "SDL_thread.h"
27 #include "../SDL_thread_c.h"
28 #include "../SDL_systhread.h"
29
30 /* List of signals to mask in the subthreads */
31 static int sig_list[] = {
32 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
33 SIGVTALRM, SIGPROF, 0
34 };
35
36
37 static void *RunThread(void *data)
38 {
39 SDL_RunThread(data);
40 pthread_exit((void*)0);
41 return((void *)0); /* Prevent compiler warning */
42 }
43
44 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
45 {
46 pthread_attr_t type;
47
48 /* Set the thread attributes */
49 if ( pthread_attr_init(&type) != 0 ) {
50 SDL_SetError("Couldn't initialize pthread attributes");
51 return(-1);
52 }
53 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
54
55 /* Create the thread and go! */
56 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
57 SDL_SetError("Not enough resources to create thread");
58 return(-1);
59 }
60 return(0);
61 }
62
63 void SDL_SYS_SetupThread(void)
64 {
65 int i;
66 sigset_t mask;
67
68 /* Mask asynchronous signals for this thread */
69 sigemptyset(&mask);
70 for ( i=0; sig_list[i]; ++i ) {
71 sigaddset(&mask, sig_list[i]);
72 }
73 pthread_sigmask(SIG_BLOCK, &mask, 0);
74
75 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
76 /* Allow ourselves to be asynchronously cancelled */
77 { int oldstate;
78 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
79 }
80 #endif
81 }
82
83 /* WARNING: This may not work for systems with 64-bit pid_t */
84 Uint32 SDL_ThreadID(void)
85 {
86 return((Uint32)pthread_self());
87 }
88
89 void SDL_SYS_WaitThread(SDL_Thread *thread)
90 {
91 pthread_join(thread->handle, 0);
92 }
93
94 void SDL_SYS_KillThread(SDL_Thread *thread)
95 {
96 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
97 pthread_cancel(thread->handle);
98 #else
99 #ifdef __FreeBSD__
100 #warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2
101 #endif
102 pthread_kill(thread->handle, SIGKILL);
103 #endif
104 }