19682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 29682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL - Simple DirectMedia Layer 39682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Copyright (C) 1997-2012 Sam Lantinga 49682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 59682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is free software; you can redistribute it and/or 69682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall modify it under the terms of the GNU Lesser General Public 79682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License as published by the Free Software Foundation; either 89682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall version 2.1 of the License, or (at your option) any later version. 99682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is distributed in the hope that it will be useful, 119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall but WITHOUT ANY WARRANTY; without even the implied warranty of 129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Lesser General Public License for more details. 149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall You should have received a copy of the GNU Lesser General Public 169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License along with this library; if not, write to the Free Software 179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Sam Lantinga 209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall slouken@libsdl.org 219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_config.h" 239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <pthread.h> 259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <signal.h> 269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_thread.h" 289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "../SDL_thread_c.h" 299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "../SDL_systhread.h" 309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* List of signals to mask in the subthreads */ 329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int sig_list[] = { 339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH, 349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SIGVTALRM, SIGPROF, 0 359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall}; 369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __RISCOS__ 389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* RISC OS needs to know the main thread for 399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * it's timer and event processing. */ 409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint riscos_using_threads = 0; 419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallUint32 riscos_main_thread = 0; /* Thread running events */ 429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void *RunThread(void *data) 469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_RunThread(data); 489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_exit((void*)0); 499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return((void *)0); /* Prevent compiler warning */ 509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint SDL_SYS_CreateThread(SDL_Thread *thread, void *args) 539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_attr_t type; 559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Set the thread attributes */ 579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( pthread_attr_init(&type) != 0 ) { 589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Couldn't initialize pthread attributes"); 599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE); 629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Create the thread and go! */ 649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) { 659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Not enough resources to create thread"); 669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __RISCOS__ 709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (riscos_using_threads == 0) { 719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall riscos_using_threads = 1; 729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall riscos_main_thread = SDL_ThreadID(); 739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_SYS_SetupThread(void) 809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int i; 829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall sigset_t mask; 839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Mask asynchronous signals for this thread */ 859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall sigemptyset(&mask); 869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for ( i=0; sig_list[i]; ++i ) { 879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall sigaddset(&mask, sig_list[i]); 889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_sigmask(SIG_BLOCK, &mask, 0); 909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef PTHREAD_CANCEL_ASYNCHRONOUS 929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Allow ourselves to be asynchronously cancelled */ 939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { int oldstate; 949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate); 959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* WARNING: This may not work for systems with 64-bit pid_t */ 1009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallUint32 SDL_ThreadID(void) 1019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return((Uint32)((size_t)pthread_self())); 1039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_SYS_WaitThread(SDL_Thread *thread) 1069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_join(thread->handle, 0); 1089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid SDL_SYS_KillThread(SDL_Thread *thread) 1119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef PTHREAD_CANCEL_ASYNCHRONOUS 1139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_cancel(thread->handle); 1149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 1159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __FREEBSD__ 1169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#warning For some reason, this doesnt actually kill a thread - FreeBSD 3.2 1179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall pthread_kill(thread->handle, SIGKILL); 1199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 121