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"
31 #include <sys/types.h>
32 #ifdef HAVE_SYS_MMAN_H
35 #ifdef HAVE_MACH_MACH_H
36 #include <mach/mach.h>
39 #include <sys/ucontext.h>
43 #ifdef HAVE_PTHREAD_NP_H
44 #include <pthread_np.h>
47 #include "wine/library.h"
48 #include "wine/pthread.h"
51 static int nb_threads = 1;
53 #if !defined(__i386__) && !defined(__x86_64__)
54 static pthread_key_t teb_key;
57 #if defined(__x86_64__) && defined(__linux__)
58 #include <asm/prctl.h>
59 extern int arch_prctl(int func, void *ptr);
62 /***********************************************************************
65 * Initialization for a newly created process.
67 static void init_process( const struct wine_pthread_callbacks *callbacks, size_t size )
73 /***********************************************************************
76 * Initialization for a newly created thread.
78 static void init_thread( struct wine_pthread_thread_info *info )
80 /* retrieve the stack info (except for main thread) */
83 #ifdef HAVE_PTHREAD_GETATTR_NP
85 pthread_getattr_np( pthread_self(), &attr );
86 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
87 pthread_attr_destroy( &attr );
88 #elif defined(HAVE_PTHREAD_ATTR_GET_NP)
90 pthread_attr_init( &attr );
91 pthread_attr_get_np( pthread_self(), &attr );
92 pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
93 pthread_attr_destroy( &attr );
94 #elif defined(HAVE_PTHREAD_GET_STACKSIZE_NP) && defined(HAVE_PTHREAD_GET_STACKADDR_NP)
96 info->stack_size = pthread_get_stacksize_np(pthread_self());
97 info->stack_base = pthread_get_stackaddr_np(pthread_self());
98 /* if base is too large assume it's the top of the stack instead */
99 if ((char *)info->stack_base > &dummy)
100 info->stack_base = (char *)info->stack_base - info->stack_size;
102 /* assume that the stack allocation is page aligned */
104 size_t page_size = getpagesize();
105 char *stack_top = (char *)((unsigned long)&dummy & ~(page_size - 1)) + page_size;
106 info->stack_base = stack_top - info->stack_size;
112 /***********************************************************************
115 static int create_thread( struct wine_pthread_thread_info *info )
121 pthread_attr_init( &attr );
122 pthread_attr_setstacksize( &attr, info->stack_size );
123 pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_DETACHED );
124 pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread on Solaris */
125 interlocked_xchg_add( &nb_threads, 1 );
126 if (pthread_create( &id, &attr, (void * (*)(void *))info->entry, info ))
128 interlocked_xchg_add( &nb_threads, -1 );
131 pthread_attr_destroy( &attr );
136 /***********************************************************************
139 * Set the current TEB for a new thread.
141 static void init_current_teb( struct wine_pthread_thread_info *info )
144 /* On the i386, the current thread is in the %fs register */
147 wine_ldt_set_base( &fs_entry, info->teb_base );
148 wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
149 wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
150 wine_ldt_init_fs( info->teb_sel, &fs_entry );
151 #elif defined(__x86_64__)
152 /* On x86_64, it's in %gs */
154 arch_prctl(ARCH_SET_GS, info->teb_base);
156 # error Please define setting %gs for your architecture
159 if (!init_done) /* first thread */
160 pthread_key_create( &teb_key, NULL );
161 pthread_setspecific( teb_key, info->teb_base );
164 /* set pid and tid */
165 info->pid = getpid();
167 info->tid = pthread_self(); /* this should return the lwp id on solaris */
168 #elif defined(__APPLE__)
169 info->tid = mach_thread_self();
170 #elif defined(__FreeBSD__)
174 info->tid = (int) lwpid;
177 info->tid = gettid();
182 /***********************************************************************
185 static void *get_current_teb(void)
189 __asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
191 #elif defined(__x86_64__)
193 __asm__( ".byte 0x65\n\tmovq 0x30,%0" : "=r" (ret) );
196 return pthread_getspecific( teb_key );
201 /***********************************************************************
204 static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
206 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) exit( info->exit_status );
207 wine_ldt_free_fs( info->teb_sel );
208 if (info->teb_size) munmap( info->teb_base, info->teb_size );
209 pthread_exit( (void *)info->exit_status );
213 /***********************************************************************
216 static void DECLSPEC_NORETURN abort_thread( long status )
218 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
219 pthread_exit( (void *)status );
223 /***********************************************************************
226 static const struct wine_pthread_functions pthread_functions =
238 void init_pthread_functions(void)
240 wine_pthread_set_functions( &pthread_functions, sizeof(pthread_functions) );