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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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"
41 static struct wine_pthread_functions funcs;
44 static pthread_key_t teb_key;
47 /***********************************************************************
48 * wine_pthread_init_process
50 * Initialization for a newly created process.
52 void wine_pthread_init_process( const struct wine_pthread_functions *functions )
54 memcpy( &funcs, functions, min(functions->size,sizeof(funcs)) );
58 /***********************************************************************
59 * wine_pthread_init_thread
61 * Initialization for a newly created thread.
63 void wine_pthread_init_thread( struct wine_pthread_thread_info *info )
65 /* retrieve the stack info (except for main thread) */
66 if (funcs.ptr_set_thread_data)
68 #ifdef HAVE_PTHREAD_GETATTR_NP
70 pthread_getattr_np( pthread_self(), &attr );
71 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
73 /* assume that the stack allocation is page aligned */
75 size_t page_mask = getpagesize() - 1;
76 char *stack_top = (char *)((unsigned long)(&dummy + page_mask) & ~page_mask);
77 info->stack_base = stack_top - info->stack_size;
83 /***********************************************************************
84 * wine_pthread_create_thread
86 int wine_pthread_create_thread( struct wine_pthread_thread_info *info )
92 pthread_attr_init( &attr );
93 pthread_attr_setstacksize( &attr, info->stack_size );
94 if (pthread_create( &id, &attr, (void * (*)(void *))info->entry, info )) ret = -1;
95 pthread_attr_destroy( &attr );
100 /***********************************************************************
101 * wine_pthread_init_current_teb
103 * Set the current TEB for a new thread.
105 void wine_pthread_init_current_teb( struct wine_pthread_thread_info *info )
108 /* On the i386, the current thread is in the %fs register */
111 wine_ldt_set_base( &fs_entry, info->teb_base );
112 wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
113 wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
114 wine_ldt_init_fs( info->teb_sel, &fs_entry );
116 if (!funcs.ptr_set_thread_data) /* first thread */
117 pthread_key_create( &teb_key, NULL );
118 pthread_setspecific( teb_key, info->teb_base );
121 /* set pid and tid */
122 info->pid = getpid();
123 info->tid = gettid();
127 /***********************************************************************
128 * wine_pthread_get_current_teb
130 void *wine_pthread_get_current_teb(void)
134 __asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
137 return pthread_getspecific( teb_key );
142 /***********************************************************************
143 * wine_pthread_exit_thread
145 void wine_pthread_exit_thread( struct wine_pthread_thread_info *info )
150 struct wine_pthread_thread_info thread_info;
153 static struct cleanup_info *previous_info;
154 struct cleanup_info *cleanup_info, *free_info;
157 /* store it at the end of the TEB structure */
158 cleanup_info = (struct cleanup_info *)((char *)info->teb_base + info->teb_size) - 1;
159 cleanup_info->self = pthread_self();
160 cleanup_info->thread_info = *info;
162 if ((free_info = interlocked_xchg_ptr( (void **)&previous_info, cleanup_info )) != NULL)
164 pthread_join( free_info->self, &ptr );
165 wine_ldt_free_fs( free_info->thread_info.teb_sel );
166 munmap( free_info->thread_info.teb_base, free_info->thread_info.teb_size );
168 pthread_exit( (void *)info->exit_status );
172 /***********************************************************************
173 * wine_pthread_abort_thread
175 void wine_pthread_abort_thread( int status )
177 pthread_detach( pthread_self() ); /* no one will be joining with us */
178 pthread_exit( (void *)status );
181 #endif /* HAVE_PTHREAD_H */