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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2020-02-10 23:06:33 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2020-02-11 00:32:44 +0100
commit8ba6ad703cb38ec57cdb473650ac289e5f8496d5 (patch)
tree843104571af29b6872721b6477d3b2e2444a3e96 /sysdeps/htl/pt-rwlock-tryrdlock.c
parentcd7965bd970b0a298e734acc9dafae0a5db5f712 (diff)
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hurd: Add __pthread_spin_wait and use it
900778283ac3 ("htl: make pthread_spin_lock really spin") made
pthread_spin_lock really spin and not block, but the current users of
__pthread_spin_lock were assuming that it blocks, i.e. they use it as a
lightweight mutex fitting in just one int.

__pthread_spin_wait provides that support back.
Diffstat (limited to 'sysdeps/htl/pt-rwlock-tryrdlock.c')
-rw-r--r--sysdeps/htl/pt-rwlock-tryrdlock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/htl/pt-rwlock-tryrdlock.c b/sysdeps/htl/pt-rwlock-tryrdlock.c
index 7baef3cccb..897528f24c 100644
--- a/sysdeps/htl/pt-rwlock-tryrdlock.c
+++ b/sysdeps/htl/pt-rwlock-tryrdlock.c
@@ -25,7 +25,7 @@
 int
 pthread_rwlock_tryrdlock (struct __pthread_rwlock *rwlock)
 {
-  __pthread_spin_lock (&rwlock->__lock);
+  __pthread_spin_wait (&rwlock->__lock);
   if (__pthread_spin_trylock (&rwlock->__held) == 0)
     /* Successfully acquired the lock.  */
     {