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"
42 static int nb_threads = 1;
45 static pthread_key_t teb_key;
48 /***********************************************************************
51 * Initialization for a newly created process.
53 static void init_process( const struct wine_pthread_callbacks *callbacks, size_t size )
59 /***********************************************************************
62 * Initialization for a newly created thread.
64 static void init_thread( struct wine_pthread_thread_info *info )
66 /* retrieve the stack info (except for main thread) */
69 #ifdef HAVE_PTHREAD_GETATTR_NP
71 pthread_getattr_np( pthread_self(), &attr );
72 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
73 pthread_attr_destroy( &attr );
74 #elif defined(HAVE_PTHREAD_ATTR_GET_NP)
76 pthread_attr_init( &attr );
77 pthread_attr_get_np( pthread_self(), &attr );
78 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
79 pthread_attr_destroy( &attr );
80 #elif defined(HAVE_PTHREAD_GET_STACKSIZE_NP) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
82 info->stack_size = pthread_get_stacksize_np(pthread_self());
83 info->stack_base = pthread_get_stackaddr_np(pthread_self());
84 /* if base is too large assume it's the top of the stack instead */
85 if ((char *)info->stack_base > &dummy)
86 info->stack_base = (char *)info->stack_base - info->stack_size;
88 /* assume that the stack allocation is page aligned */
90 size_t page_size = getpagesize();
91 char *stack_top = (char *)((unsigned long)&dummy & ~(page_size - 1)) + page_size;
92 info->stack_base = stack_top - info->stack_size;
98 /***********************************************************************
101 static int create_thread( struct wine_pthread_thread_info *info )
107 pthread_attr_init( &attr );
108 pthread_attr_setstacksize( &attr, info->stack_size );
109 pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_DETACHED );
110 pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread on Solaris */
111 interlocked_xchg_add( &nb_threads, 1 );
112 if (pthread_create( &id, &attr, (void * (*)(void *))info->entry, info ))
114 interlocked_xchg_add( &nb_threads, -1 );
117 pthread_attr_destroy( &attr );
122 /***********************************************************************
125 * Set the current TEB for a new thread.
127 static void init_current_teb( struct wine_pthread_thread_info *info )
130 /* On the i386, the current thread is in the %fs register */
133 wine_ldt_set_base( &fs_entry, info->teb_base );
134 wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
135 wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
136 wine_ldt_init_fs( info->teb_sel, &fs_entry );
138 if (!init_done) /* first thread */
139 pthread_key_create( &teb_key, NULL );
140 pthread_setspecific( teb_key, info->teb_base );
143 /* set pid and tid */
144 info->pid = getpid();
146 info->tid = pthread_self(); /* this should return the lwp id on solaris */
148 info->tid = gettid();
153 /***********************************************************************
156 static void *get_current_teb(void)
160 __asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
163 return pthread_getspecific( teb_key );
168 /***********************************************************************
171 static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
173 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) exit( info->exit_status );
174 wine_ldt_free_fs( info->teb_sel );
175 if (info->teb_size) munmap( info->teb_base, info->teb_size );
176 pthread_exit( (void *)info->exit_status );
180 /***********************************************************************
183 static void DECLSPEC_NORETURN abort_thread( long status )
185 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
186 pthread_exit( (void *)status );
190 /***********************************************************************
193 const struct wine_pthread_functions pthread_functions =
205 #endif /* HAVE_PTHREAD_H */