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 | } |