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Date: Sat, 24 Jun 2017 10:18:05 +0200
From: Jens Gustedt <Jens.Gustedt@...ia.fr>
To: musl@...ts.openwall.com
Subject: [PATCH] unify the use of FUTEX_PRIVATE
The flag 1<<7 is used in several places for different purposes that are
not always easy to distinguish. Mark those usages that correspond to the
flag that is used by the kernel for futexes.
---
src/internal/pthread_impl.h | 2 +-
src/thread/__timedwait.c | 2 +-
src/thread/pthread_barrier_wait.c | 2 +-
src/thread/pthread_cond_timedwait.c | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index 757b86ad..5734a4e9 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -127,7 +127,7 @@ int __timedwait_cp(volatile int *, int, clockid_t, const struct timespec *, int)
void __wait(volatile int *, volatile int *, int, int);
static inline void __wake(volatile void *addr, int cnt, int priv)
{
- if (priv) priv = 128;
+ if (priv) priv = FUTEX_PRIVATE;
if (cnt<0) cnt = INT_MAX;
__syscall(SYS_futex, addr, FUTEX_WAKE|priv, cnt) != -ENOSYS ||
__syscall(SYS_futex, addr, FUTEX_WAKE, cnt);
diff --git a/src/thread/__timedwait.c b/src/thread/__timedwait.c
index 13d8465a..d2079c88 100644
--- a/src/thread/__timedwait.c
+++ b/src/thread/__timedwait.c
@@ -14,7 +14,7 @@ int __timedwait_cp(volatile int *addr, int val,
int r;
struct timespec to, *top=0;
- if (priv) priv = 128;
+ if (priv) priv = FUTEX_PRIVATE;
if (at) {
if (at->tv_nsec >= 1000000000UL) return EINVAL;
diff --git a/src/thread/pthread_barrier_wait.c b/src/thread/pthread_barrier_wait.c
index 06b83db9..cc2a8bbf 100644
--- a/src/thread/pthread_barrier_wait.c
+++ b/src/thread/pthread_barrier_wait.c
@@ -84,7 +84,7 @@ int pthread_barrier_wait(pthread_barrier_t *b)
a_spin();
a_inc(&inst->finished);
while (inst->finished == 1)
- __syscall(SYS_futex,&inst->finished,FUTEX_WAIT|128,1,0) != -ENOSYS
+ __syscall(SYS_futex,&inst->finished,FUTEX_WAIT|FUTEX_PRIVATE,1,0) != -ENOSYS
|| __syscall(SYS_futex,&inst->finished,FUTEX_WAIT,1,0);
return PTHREAD_BARRIER_SERIAL_THREAD;
}
diff --git a/src/thread/pthread_cond_timedwait.c b/src/thread/pthread_cond_timedwait.c
index 3526ecfb..ed8569c2 100644
--- a/src/thread/pthread_cond_timedwait.c
+++ b/src/thread/pthread_cond_timedwait.c
@@ -54,7 +54,7 @@ static inline void unlock_requeue(volatile int *l, volatile int *r, int w)
{
a_store(l, 0);
if (w) __wake(l, 1, 1);
- else __syscall(SYS_futex, l, FUTEX_REQUEUE|128, 0, 1, r) != -ENOSYS
+ else __syscall(SYS_futex, l, FUTEX_REQUEUE|FUTEX_PRIVATE, 0, 1, r) != -ENOSYS
|| __syscall(SYS_futex, l, FUTEX_REQUEUE, 0, 1, r);
}
--
2.11.0
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