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 33 __BEGIN_DECLS 34 35 typedef struct pthread_internal_t 36 { 37 struct pthread_internal_t* next; 38 struct pthread_internal_t** pref; 39 pthread_attr_t attr; 40 pid_t kernel_id; 41 pthread_cond_t join_cond; 42 int join_count; 43 void* return_value; 44 int intern; 45 __pthread_cleanup_t* cleanup_stack; 46 void** tls; /* thread-local storage area */ 47 } pthread_internal_t; 48 49 extern void _init_thread(pthread_internal_t * thread, pid_t kernel_id, pthread_attr_t * attr, void * stack_base); 50 51 /* needed by posix-timers.c */ 52 53 static __inline__ void timespec_add( struct timespec* a, const struct timespec* b ) 54 { 55 a->tv_sec += b->tv_sec; 56 a->tv_nsec += b->tv_nsec; 57 if (a->tv_nsec >= 1000000000) { 58 a->tv_nsec -= 1000000000; 59 a->tv_sec += 1; 60 } 61 } 62 63 static __inline__ void timespec_sub( struct timespec* a, const struct timespec* b ) 64 { 65 a->tv_sec -= b->tv_sec; 66 a->tv_nsec -= b->tv_nsec; 67 if (a->tv_nsec < 0) { 68 a->tv_nsec += 1000000000; 69 a->tv_sec -= 1; 70 } 71 } 72 73 static __inline__ void timespec_zero( struct timespec* a ) 74 { 75 a->tv_sec = a->tv_nsec = 0; 76 } 77 78 static __inline__ int timespec_is_zero( const struct timespec* a ) 79 { 80 return (a->tv_sec == 0 && a->tv_nsec == 0); 81 } 82 83 static __inline__ int timespec_cmp( const struct timespec* a, const struct timespec* b ) 84 { 85 if (a->tv_sec < b->tv_sec) return -1; 86 if (a->tv_sec > b->tv_sec) return +1; 87 if (a->tv_nsec < b->tv_nsec) return -1; 88 if (a->tv_nsec > b->tv_nsec) return +1; 89 return 0; 90 } 91 92 static __inline__ int timespec_cmp0( const struct timespec* a ) 93 { 94 if (a->tv_sec < 0) return -1; 95 if (a->tv_sec > 0) return +1; 96 if (a->tv_nsec < 0) return -1; 97 if (a->tv_nsec > 0) return +1; 98 return 0; 99 } 100 101 extern int __pthread_cond_timedwait(pthread_cond_t*, 102 pthread_mutex_t*, 103 const struct timespec*, 104 clockid_t); 105 106 extern int __pthread_cond_timedwait_relative(pthread_cond_t*, 107 pthread_mutex_t*, 108 const struct timespec*); 109 110 /* needed by fork.c */ 111 extern void __timer_table_start_stop(int stop); 112 113 __END_DECLS 114 115 #endif /* _PTHREAD_INTERNAL_H_ */ 116
