1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #ifndef _PTHREAD_INTERNAL_H_ 29 #define _PTHREAD_INTERNAL_H_ 30 31 #include <pthread.h> 32 #include <stdbool.h> 33 #include <sys/cdefs.h> 34 35 __BEGIN_DECLS 36 37 typedef struct pthread_internal_t 38 { 39 struct pthread_internal_t* next; 40 struct pthread_internal_t* prev; 41 pthread_attr_t attr; 42 pid_t tid; 43 bool allocated_on_heap; 44 pthread_cond_t join_cond; 45 void* return_value; 46 int internal_flags; 47 __pthread_cleanup_t* cleanup_stack; 48 void** tls; /* thread-local storage area */ 49 50 void* alternate_signal_stack; 51 52 /* 53 * The dynamic linker implements dlerror(3), which makes it hard for us to implement this 54 * per-thread buffer by simply using malloc(3) and free(3). 55 */ 56 #define __BIONIC_DLERROR_BUFFER_SIZE 512 57 char dlerror_buffer[__BIONIC_DLERROR_BUFFER_SIZE]; 58 } pthread_internal_t; 59 60 int _init_thread(pthread_internal_t* thread, bool add_to_thread_list); 61 void __init_tls(pthread_internal_t* thread); 62 void _pthread_internal_add(pthread_internal_t* thread); 63 pthread_internal_t* __get_thread(void); 64 65 __LIBC_HIDDEN__ void pthread_key_clean_all(void); 66 __LIBC_HIDDEN__ void _pthread_internal_remove_locked(pthread_internal_t* thread); 67 68 /* Has the thread been detached by a pthread_join or pthread_detach call? */ 69 #define PTHREAD_ATTR_FLAG_DETACHED 0x00000001 70 71 /* Was the thread's stack allocated by the user rather than by us? */ 72 #define PTHREAD_ATTR_FLAG_USER_STACK 0x00000002 73 74 /* Has the thread been joined by another thread? */ 75 #define PTHREAD_ATTR_FLAG_JOINED 0x00000004 76 77 /* Has the thread already exited but not been joined? */ 78 #define PTHREAD_ATTR_FLAG_ZOMBIE 0x00000008 79 80 __LIBC_HIDDEN__ extern pthread_internal_t* gThreadList; 81 __LIBC_HIDDEN__ extern pthread_mutex_t gThreadListLock; 82 83 /* needed by fork.c */ 84 extern void __timer_table_start_stop(int stop); 85 extern void __bionic_atfork_run_prepare(); 86 extern void __bionic_atfork_run_child(); 87 extern void __bionic_atfork_run_parent(); 88 89 __END_DECLS 90 91 #endif /* _PTHREAD_INTERNAL_H_ */ 92
