| /* |
| * glibc threading support |
| * |
| * Copyright 2003 Alexandre Julliard |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include "config.h" |
| #include "wine/port.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| #ifdef HAVE_PTHREAD_H |
| # include <pthread.h> |
| #endif |
| |
| #include "wine/library.h" |
| |
| /* malloc wrapper */ |
| static void *xmalloc( size_t size ) |
| { |
| void *res; |
| |
| if (!size) size = 1; |
| if (!(res = malloc( size ))) |
| { |
| fprintf( stderr, "wine: virtual memory exhausted\n" ); |
| exit(1); |
| } |
| return res; |
| } |
| |
| /* separate thread to check for NPTL and TLS features */ |
| static void *needs_pthread( void *arg ) |
| { |
| pid_t tid = gettid(); |
| /* check for NPTL */ |
| if (tid != -1 && tid != getpid()) return (void *)1; |
| /* check for TLS glibc */ |
| return (void *)(wine_get_gs() != 0); |
| } |
| |
| /* return the name of the Wine threading variant to use */ |
| static const char *get_threading(void) |
| { |
| pthread_t id; |
| void *ret; |
| |
| pthread_create( &id, NULL, needs_pthread, NULL ); |
| pthread_join( id, &ret ); |
| return ret ? "wine-pthread" : "wine-kthread"; |
| } |
| |
| |
| /********************************************************************** |
| * main |
| */ |
| int main( int argc, char *argv[] ) |
| { |
| const char *loader = getenv( "WINELOADER" ); |
| const char *threads = get_threading(); |
| |
| if (loader) |
| { |
| const char *path; |
| char *new_name, *new_loader; |
| |
| if ((path = strrchr( loader, '/' ))) path++; |
| else path = loader; |
| |
| new_name = xmalloc( (path - loader) + strlen(threads) + 1 ); |
| memcpy( new_name, loader, path - loader ); |
| strcpy( new_name + (path - loader), threads ); |
| |
| /* update WINELOADER with the new name */ |
| new_loader = xmalloc( sizeof("WINELOADER=") + strlen(new_name) ); |
| strcpy( new_loader, "WINELOADER=" ); |
| strcat( new_loader, new_name ); |
| putenv( new_loader ); |
| wine_exec_wine_binary( new_name, argv, NULL, TRUE ); |
| } |
| else |
| { |
| wine_init_argv0_path( argv[0] ); |
| wine_exec_wine_binary( threads, argv, NULL, TRUE ); |
| } |
| fprintf( stderr, "wine: could not exec %s\n", argv[0] ); |
| exit(1); |
| } |