From 6e6eb242188e8312a6a8a78e6be0d11cd1036610 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Wed, 18 Mar 2026 21:17:10 +0000
Subject:  MacOS doesn't have pthread_mutex_timedlock -_-

---
 src/libposixplz/pthread_mutex_tailock.c | 41 +++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/libposixplz/pthread_mutex_tailock.c

(limited to 'src/libposixplz/pthread_mutex_tailock.c')

diff --git a/src/libposixplz/pthread_mutex_tailock.c b/src/libposixplz/pthread_mutex_tailock.c
new file mode 100644
index 0000000..736921c
--- /dev/null
+++ b/src/libposixplz/pthread_mutex_tailock.c
@@ -0,0 +1,41 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <time.h>
+#include <pthread.h>
+
+#include <skalibs/sysdeps.h>
+#include <skalibs/tai.h>
+#include <skalibs/pthread.h>
+
+#ifdef SKALIBS_HASPTHREADMUTEXTIMEDLOCK
+
+int pthread_mutex_tailock (pthread_mutex_t *mtx, tain const *deadline, tain *stamp)
+{
+  int e ;
+  struct timespec ts ;
+  tain tto ;
+  if (!stamp) return pthread_mutex_lock(mtx) ;
+  tain_sub(&tto, deadline, stamp) ;
+  if (!timespec_from_tain_relative(&ts, &tto)) return errno ;
+#ifdef SKALIBS_HASPTHREADMUTEXCLOCKLOCK
+  if (&tain_now != &tain_wallclock_read)
+    e = pthread_mutex_clocklock(mtx, CLOCK_MONOTONIC, &ts) ;
+  else
+#else
+    e = pthread_mutex_timedlock(mtx, &ts) ;
+#endif
+  tain_now(stamp) ;
+  return e ;
+}
+
+#else
+
+int pthread_mutex_tailock (pthread_mutex_t *mtx, tain const *deadline, tain *stamp)
+{
+  (void)deadline ;
+  (void)stamp ;
+  return pthread_mutex_lock(mtx) ;
+}
+
+#endif
-- 
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