Home | History | Annotate | Download | only in bionic
      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 extern void __bionic_atfork_run_prepare();
    113 extern void __bionic_atfork_run_child();
    114 extern void __bionic_atfork_run_parent();
    115 
    116 __END_DECLS
    117 
    118 #endif /* _PTHREAD_INTERNAL_H_ */
    119