summaryrefslogtreecommitdiff
path: root/src/internal/futex.h
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2011-08-02 21:11:36 -0400
committerRich Felker <dalias@aerifal.cx>2011-08-02 21:11:36 -0400
commitec381af90208a5675183202cf05078eac208edfb (patch)
tree26005bfd6a3b4f7b4788183d89ec1c2769bd2022 /src/internal/futex.h
parentc68de0be2fb649f91b31080224fb6e48084eaaee (diff)
downloadmusl-ec381af90208a5675183202cf05078eac208edfb.tar.gz
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.
Diffstat (limited to 'src/internal/futex.h')
-rw-r--r--src/internal/futex.h3
1 files changed, 3 insertions, 0 deletions
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 *);