diff options
Diffstat (limited to 'dbus/dbus-sysdeps.c')
-rw-r--r-- | dbus/dbus-sysdeps.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/dbus/dbus-sysdeps.c b/dbus/dbus-sysdeps.c index 38efb0cd..53eebf77 100644 --- a/dbus/dbus-sysdeps.c +++ b/dbus/dbus-sysdeps.c @@ -23,6 +23,7 @@ #include "dbus-internals.h" #include "dbus-sysdeps.h" +#include "dbus-threads.h" #include <sys/types.h> #include <stdlib.h> #include <string.h> @@ -941,6 +942,55 @@ _dbus_string_append_our_uid (DBusString *str) } +static DBusMutex *atomic_lock = NULL; +DBusMutex *_dbus_atomic_init_lock (void); +DBusMutex * +_dbus_atomic_init_lock (void) +{ + atomic_lock = dbus_mutex_new (); + return atomic_lock; +} + +/** + * Atomically increments an integer + * + * @param atomic pointer to the integer to increment + * @returns the value after incrementing + * + * @todo implement arch-specific faster atomic ops + */ +dbus_atomic_t +_dbus_atomic_inc (dbus_atomic_t *atomic) +{ + dbus_atomic_t res; + + dbus_mutex_lock (atomic_lock); + *atomic += 1; + res = *atomic; + dbus_mutex_unlock (atomic_lock); + return res; +} + +/** + * Atomically decrement an integer + * + * @param atomic pointer to the integer to decrement + * @returns the value after decrementing + * + * @todo implement arch-specific faster atomic ops + */ +dbus_atomic_t +_dbus_atomic_dec (dbus_atomic_t *atomic) +{ + dbus_atomic_t res; + + dbus_mutex_lock (atomic_lock); + *atomic -= 1; + res = *atomic; + dbus_mutex_unlock (atomic_lock); + return res; +} + /** * Wrapper for poll(). * |