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
37 #ifdef HAVE_MACH_MACH_H
38 #include <mach/mach.h>
41 #include <sys/ucontext.h>
45 #include "wine/library.h"
46 #include "wine/pthread.h"
49 static int nb_threads = 1;
52 static pthread_key_t teb_key;
55 /***********************************************************************
58 * Initialization for a newly created process.
60 static void init_process( const struct wine_pthread_callbacks *callbacks, size_t size )
66 /***********************************************************************
69 * Initialization for a newly created thread.
71 static void init_thread( struct wine_pthread_thread_info *info )
73 /* retrieve the stack info (except for main thread) */
76 #ifdef HAVE_PTHREAD_GETATTR_NP
78 pthread_getattr_np( pthread_self(), &attr );
79 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
80 pthread_attr_destroy( &attr );
81 #elif defined(HAVE_PTHREAD_ATTR_GET_NP)
83 pthread_attr_init( &attr );
84 pthread_attr_get_np( pthread_self(), &attr );
85 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
86 pthread_attr_destroy( &attr );
87 #elif defined(HAVE_PTHREAD_GET_STACKSIZE_NP) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
89 info->stack_size = pthread_get_stacksize_np(pthread_self());
90 info->stack_base = pthread_get_stackaddr_np(pthread_self());
91 /* if base is too large assume it's the top of the stack instead */
92 if ((char *)info->stack_base > &dummy)
93 info->stack_base = (char *)info->stack_base - info->stack_size;
95 /* assume that the stack allocation is page aligned */
97 size_t page_size = getpagesize();
98 char *stack_top = (char *)((unsigned long)&dummy & ~(page_size - 1)) + page_size;
99 info->stack_base = stack_top - info->stack_size;
105 /***********************************************************************
108 static int create_thread( struct wine_pthread_thread_info *info )
114 pthread_attr_init( &attr );
115 pthread_attr_setstacksize( &attr, info->stack_size );
116 pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_DETACHED );
117 pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread on Solaris */
118 interlocked_xchg_add( &nb_threads, 1 );
119 if (pthread_create( &id, &attr, (void * (*)(void *))info->entry, info ))
121 interlocked_xchg_add( &nb_threads, -1 );
124 pthread_attr_destroy( &attr );
129 /***********************************************************************
132 * Set the current TEB for a new thread.
134 static void init_current_teb( struct wine_pthread_thread_info *info )
137 /* On the i386, the current thread is in the %fs register */
140 wine_ldt_set_base( &fs_entry, info->teb_base );
141 wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
142 wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
143 wine_ldt_init_fs( info->teb_sel, &fs_entry );
145 if (!init_done) /* first thread */
146 pthread_key_create( &teb_key, NULL );
147 pthread_setspecific( teb_key, info->teb_base );
150 /* set pid and tid */
151 info->pid = getpid();
153 info->tid = pthread_self(); /* this should return the lwp id on solaris */
154 #elif defined(__APPLE__)
155 info->tid = mach_thread_self();
156 #elif defined(__FreeBSD__)
160 info->tid = (int) lwpid;
163 info->tid = gettid();
168 /***********************************************************************
171 static void *get_current_teb(void)
175 __asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
178 return pthread_getspecific( teb_key );
183 /***********************************************************************
186 static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
188 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) exit( info->exit_status );
189 wine_ldt_free_fs( info->teb_sel );
190 if (info->teb_size) munmap( info->teb_base, info->teb_size );
191 pthread_exit( (void *)info->exit_status );
195 /***********************************************************************
198 static void DECLSPEC_NORETURN abort_thread( long status )
200 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
201 pthread_exit( (void *)status );
205 /***********************************************************************
208 const struct wine_pthread_functions pthread_functions =
220 #endif /* HAVE_PTHREAD_H */