diff options
Diffstat (limited to 'include/apr_global_mutex.h')
| -rw-r--r-- | include/apr_global_mutex.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/apr_global_mutex.h b/include/apr_global_mutex.h index 90d9c55b0484..e3cba23ff202 100644 --- a/include/apr_global_mutex.h +++ b/include/apr_global_mutex.h @@ -29,6 +29,7 @@ #if APR_PROC_MUTEX_IS_GLOBAL #include "apr_proc_mutex.h" #endif +#include "apr_time.h" #ifdef __cplusplus extern "C" { @@ -66,6 +67,7 @@ typedef struct apr_global_mutex_t apr_global_mutex_t; * APR_LOCK_POSIXSEM * APR_LOCK_PROC_PTHREAD * APR_LOCK_DEFAULT pick the default mechanism for the platform + * APR_LOCK_DEFAULT_TIMED pick the default timed mechanism * </PRE> * @param pool the pool from which to allocate the mutex. * @warning Check APR_HAS_foo_SERIALIZE defines to see if the platform supports @@ -109,6 +111,17 @@ APR_DECLARE(apr_status_t) apr_global_mutex_lock(apr_global_mutex_t *mutex); APR_DECLARE(apr_status_t) apr_global_mutex_trylock(apr_global_mutex_t *mutex); /** + * Attempt to acquire the lock for the given mutex until timeout expires. + * If the acquisition time outs, the call returns with APR_TIMEUP. + * @param mutex the mutex on which to attempt the lock acquiring. + * @param timeout the relative timeout (microseconds). + * @note A negative or nul timeout means immediate attempt, returning + * APR_TIMEUP without blocking if it the lock is already acquired. + */ +APR_DECLARE(apr_status_t) apr_global_mutex_timedlock(apr_global_mutex_t *mutex, + apr_interval_time_t timeout); + +/** * Release the lock for the given mutex. * @param mutex the mutex from which to release the lock. */ |