2 * Wine threading routines using the pthread library
4 * Copyright 2003 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
33 #include <sys/types.h>
34 #ifdef HAVE_SYS_MMAN_H
38 #include "wine/library.h"
39 #include "wine/pthread.h"
44 static pthread_key_t teb_key;
47 /***********************************************************************
50 * Initialization for a newly created process.
52 static void init_process( const struct wine_pthread_callbacks *callbacks, size_t size )
58 /***********************************************************************
61 * Initialization for a newly created thread.
63 static void init_thread( struct wine_pthread_thread_info *info )
65 /* retrieve the stack info (except for main thread) */
68 #ifdef HAVE_PTHREAD_GETATTR_NP
70 pthread_getattr_np( pthread_self(), &attr );
71 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
72 pthread_attr_destroy( &attr );
73 #elif defined(HAVE_PTHREAD_GET_STACKSIZE_NP) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
75 info->stack_size = pthread_get_stacksize_np(pthread_self());
76 info->stack_base = pthread_get_stackaddr_np(pthread_self());
77 /* if base is too large assume it's the top of the stack instead */
78 if ((char *)info->stack_base > &dummy)
79 info->stack_base = (char *)info->stack_base - info->stack_size;
81 /* assume that the stack allocation is page aligned */
83 size_t page_size = getpagesize();
84 char *stack_top = (char *)((unsigned long)&dummy & ~(page_size - 1)) + page_size;
85 info->stack_base = stack_top - info->stack_size;
91 /***********************************************************************
94 static int create_thread( struct wine_pthread_thread_info *info )
100 pthread_attr_init( &attr );
101 pthread_attr_setstacksize( &attr, info->stack_size );
102 pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_DETACHED );
103 if (pthread_create( &id, &attr, (void * (*)(void *))info->entry, info )) ret = -1;
104 pthread_attr_destroy( &attr );
109 /***********************************************************************
112 * Set the current TEB for a new thread.
114 static void init_current_teb( struct wine_pthread_thread_info *info )
117 /* On the i386, the current thread is in the %fs register */
120 wine_ldt_set_base( &fs_entry, info->teb_base );
121 wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
122 wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
123 wine_ldt_init_fs( info->teb_sel, &fs_entry );
125 if (!init_done) /* first thread */
126 pthread_key_create( &teb_key, NULL );
127 pthread_setspecific( teb_key, info->teb_base );
130 /* set pid and tid */
131 info->pid = getpid();
132 info->tid = gettid();
136 /***********************************************************************
139 static void *get_current_teb(void)
143 __asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
146 return pthread_getspecific( teb_key );
151 /***********************************************************************
154 static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
156 wine_ldt_free_fs( info->teb_sel );
157 munmap( info->teb_base, info->teb_size );
158 pthread_exit( (void *)info->exit_status );
162 /***********************************************************************
165 static void DECLSPEC_NORETURN abort_thread( long status )
167 pthread_exit( (void *)status );
171 /***********************************************************************
174 const struct wine_pthread_functions pthread_functions =
185 #endif /* HAVE_PTHREAD_H */