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-rw-r--r--src/thread/__wait.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/src/thread/__wait.c b/src/thread/__wait.c
index a1e47804..ec1e8206 100644
--- a/src/thread/__wait.c
+++ b/src/thread/__wait.c
@@ -3,13 +3,15 @@
void __wait(volatile int *addr, volatile int *waiters, int val, int priv)
{
int spins=10000;
- if (priv) priv = 128; priv=0;
+ if (priv) priv = 128;
while (spins--) {
if (*addr==val) a_spin();
else return;
}
if (waiters) a_inc(waiters);
- while (*addr==val)
- __syscall(SYS_futex, addr, FUTEX_WAIT|priv, val, 0);
+ while (*addr==val) {
+ __syscall(SYS_futex, addr, FUTEX_WAIT|priv, val, 0) != -EINVAL
+ || __syscall(SYS_futex, addr, FUTEX_WAIT, val, 0);
+ }
if (waiters) a_dec(waiters);
}