LCOV - code coverage report
Current view: top level - pulsecore - mutex-posix.c (source / functions) Hit Total Coverage
Test: lcov.out Lines: 49 56 87.5 %
Date: 2012-07-17 Functions: 9 10 90.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 30 64 46.9 %

           Branch data     Line data    Source code
       1                 :            : /***
       2                 :            :   This file is part of PulseAudio.
       3                 :            : 
       4                 :            :   Copyright 2006 Lennart Poettering
       5                 :            : 
       6                 :            :   PulseAudio is free software; you can redistribute it and/or modify
       7                 :            :   it under the terms of the GNU Lesser General Public License as published
       8                 :            :   by the Free Software Foundation; either version 2.1 of the License,
       9                 :            :   or (at your option) any later version.
      10                 :            : 
      11                 :            :   PulseAudio is distributed in the hope that it will be useful, but
      12                 :            :   WITHOUT ANY WARRANTY; without even the implied warranty of
      13                 :            :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
      14                 :            :   General Public License for more details.
      15                 :            : 
      16                 :            :   You should have received a copy of the GNU Lesser General Public License
      17                 :            :   along with PulseAudio; if not, write to the Free Software
      18                 :            :   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
      19                 :            :   USA.
      20                 :            : ***/
      21                 :            : 
      22                 :            : #ifdef HAVE_CONFIG_H
      23                 :            : #include <config.h>
      24                 :            : #endif
      25                 :            : 
      26                 :            : #include <pthread.h>
      27                 :            : #include <errno.h>
      28                 :            : 
      29                 :            : #include <pulse/xmalloc.h>
      30                 :            : #include <pulsecore/macro.h>
      31                 :            : 
      32                 :            : #include "mutex.h"
      33                 :            : 
      34                 :            : struct pa_mutex {
      35                 :            :     pthread_mutex_t mutex;
      36                 :            : };
      37                 :            : 
      38                 :            : struct pa_cond {
      39                 :            :     pthread_cond_t cond;
      40                 :            : };
      41                 :            : 
      42                 :       1052 : pa_mutex* pa_mutex_new(pa_bool_t recursive, pa_bool_t inherit_priority) {
      43                 :            :     pa_mutex *m;
      44                 :            :     pthread_mutexattr_t attr;
      45                 :            :     int r;
      46                 :            : 
      47         [ -  + ]:       1052 :     pa_assert_se(pthread_mutexattr_init(&attr) == 0);
      48                 :            : 
      49         [ +  + ]:       1047 :     if (recursive)
      50         [ -  + ]:         24 :         pa_assert_se(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) == 0);
      51                 :            : 
      52                 :            : #ifdef HAVE_PTHREAD_PRIO_INHERIT
      53         [ +  + ]:       1047 :     if (inherit_priority) {
      54                 :         27 :         r = pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
      55         [ -  + ]:         27 :         pa_assert(r == 0 || r == ENOTSUP);
      56                 :            :     }
      57                 :            : #endif
      58                 :            : 
      59                 :       1047 :     m = pa_xnew(pa_mutex, 1);
      60                 :            : 
      61                 :            : #ifndef HAVE_PTHREAD_PRIO_INHERIT
      62                 :            :     pa_assert_se(pthread_mutex_init(&m->mutex, &attr) == 0);
      63                 :            : 
      64                 :            : #else
      65         [ -  + ]:       1046 :     if ((r = pthread_mutex_init(&m->mutex, &attr))) {
      66                 :            : 
      67                 :            :         /* If this failed, then this was probably due to non-available
      68                 :            :          * priority inheritance. In which case we fall back to normal
      69                 :            :          * mutexes. */
      70 [ #  # ][ #  # ]:          0 :         pa_assert(r == ENOTSUP && inherit_priority);
      71                 :            : 
      72         [ #  # ]:          0 :         pa_assert_se(pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_NONE) == 0);
      73         [ #  # ]:          0 :         pa_assert_se(pthread_mutex_init(&m->mutex, &attr) == 0);
      74                 :            :     }
      75                 :            : #endif
      76                 :            : 
      77                 :       1048 :     return m;
      78                 :            : }
      79                 :            : 
      80                 :        500 : void pa_mutex_free(pa_mutex *m) {
      81         [ -  + ]:        500 :     pa_assert(m);
      82                 :            : 
      83         [ -  + ]:        500 :     pa_assert_se(pthread_mutex_destroy(&m->mutex) == 0);
      84                 :        500 :     pa_xfree(m);
      85                 :        497 : }
      86                 :            : 
      87                 :       1734 : void pa_mutex_lock(pa_mutex *m) {
      88         [ -  + ]:       1734 :     pa_assert(m);
      89                 :            : 
      90         [ -  + ]:       1734 :     pa_assert_se(pthread_mutex_lock(&m->mutex) == 0);
      91                 :       1774 : }
      92                 :            : 
      93                 :          0 : pa_bool_t pa_mutex_try_lock(pa_mutex *m) {
      94                 :            :     int r;
      95         [ #  # ]:          0 :     pa_assert(m);
      96                 :            : 
      97         [ #  # ]:          0 :     if ((r = pthread_mutex_trylock(&m->mutex)) != 0) {
      98         [ #  # ]:          0 :         pa_assert(r == EBUSY);
      99                 :            :         return FALSE;
     100                 :            :     }
     101                 :            : 
     102                 :            :     return TRUE;
     103                 :            : }
     104                 :            : 
     105                 :       1775 : void pa_mutex_unlock(pa_mutex *m) {
     106         [ -  + ]:       1775 :     pa_assert(m);
     107                 :            : 
     108         [ -  + ]:       1775 :     pa_assert_se(pthread_mutex_unlock(&m->mutex) == 0);
     109                 :       1766 : }
     110                 :            : 
     111                 :          4 : pa_cond *pa_cond_new(void) {
     112                 :            :     pa_cond *c;
     113                 :            : 
     114                 :          4 :     c = pa_xnew(pa_cond, 1);
     115         [ -  + ]:          4 :     pa_assert_se(pthread_cond_init(&c->cond, NULL) == 0);
     116                 :          4 :     return c;
     117                 :            : }
     118                 :            : 
     119                 :          4 : void pa_cond_free(pa_cond *c) {
     120         [ -  + ]:          4 :     pa_assert(c);
     121                 :            : 
     122         [ -  + ]:          4 :     pa_assert_se(pthread_cond_destroy(&c->cond) == 0);
     123                 :          4 :     pa_xfree(c);
     124                 :          4 : }
     125                 :            : 
     126                 :        203 : void pa_cond_signal(pa_cond *c, int broadcast) {
     127         [ -  + ]:        203 :     pa_assert(c);
     128                 :            : 
     129         [ +  + ]:        203 :     if (broadcast)
     130         [ -  + ]:          2 :         pa_assert_se(pthread_cond_broadcast(&c->cond) == 0);
     131                 :            :     else
     132         [ -  + ]:        201 :         pa_assert_se(pthread_cond_signal(&c->cond) == 0);
     133                 :        203 : }
     134                 :            : 
     135                 :        137 : int pa_cond_wait(pa_cond *c, pa_mutex *m) {
     136         [ -  + ]:        137 :     pa_assert(c);
     137         [ -  + ]:        137 :     pa_assert(m);
     138                 :            : 
     139                 :        137 :     return pthread_cond_wait(&c->cond, &m->mutex);
     140                 :            : }
     141                 :            : 
     142                 :       1990 : pa_mutex* pa_static_mutex_get(pa_static_mutex *s, pa_bool_t recursive, pa_bool_t inherit_priority) {
     143                 :            :     pa_mutex *m;
     144                 :            : 
     145         [ -  + ]:       1990 :     pa_assert(s);
     146                 :            : 
     147                 :            :     /* First, check if already initialized and short cut */
     148         [ +  + ]:       1990 :     if ((m = pa_atomic_ptr_load(&s->ptr)))
     149                 :            :         return m;
     150                 :            : 
     151                 :            :     /* OK, not initialized, so let's allocate, and fill in */
     152                 :       1024 :     m = pa_mutex_new(recursive, inherit_priority);
     153         [ +  + ]:       1015 :     if ((pa_atomic_ptr_cmpxchg(&s->ptr, NULL, m)))
     154                 :            :         return m;
     155                 :            : 
     156                 :        477 :     pa_mutex_free(m);
     157                 :            : 
     158                 :            :     /* Him, filling in failed, so someone else must have filled in
     159                 :            :      * already */
     160         [ -  + ]:       1974 :     pa_assert_se(m = pa_atomic_ptr_load(&s->ptr));
     161                 :            :     return m;
     162                 :            : }

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