From ec381af90208a5675183202cf05078eac208edfb Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Tue, 2 Aug 2011 21:11:36 -0400 Subject: unify and overhaul timed futex waits new features: - FUTEX_WAIT_BITSET op will be used for timed waits if available. this saves a call to clock_gettime. - error checking for the timespec struct is now inside __timedwait so it doesn't need to be duplicated everywhere. cond_timedwait still needs to duplicate it to avoid unlocking the mutex, though. - pushing and popping the cancellation handler is delegated to __timedwait, and cancellable/non-cancellable waits are unified. --- src/internal/futex.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/internal/futex.h') diff --git a/src/internal/futex.h b/src/internal/futex.h index c0453822..d7bf2b7d 100644 --- a/src/internal/futex.h +++ b/src/internal/futex.h @@ -10,6 +10,9 @@ #define FUTEX_LOCK_PI 6 #define FUTEX_UNLOCK_PI 7 #define FUTEX_TRYLOCK_PI 8 +#define FUTEX_WAIT_BITSET 9 + +#define FUTEX_CLOCK_REALTIME 256 int __futex(volatile int *, int, int, void *); -- cgit v1.2.1