From 16984701aa5165b77f229cc318e8025ee8cf81b5 Mon Sep 17 00:00:00 2001
From: Mystery Man <unknown@mandriva.org>
Date: Mon, 14 May 2001 14:17:54 +0000
Subject: This commit was manufactured by cvs2svn to create branch 'dietlibc'.

---
 mdk-stage1/dietlibc/libpthread/pthread_spinlock.c | 38 +++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 mdk-stage1/dietlibc/libpthread/pthread_spinlock.c

(limited to 'mdk-stage1/dietlibc/libpthread/pthread_spinlock.c')

diff --git a/mdk-stage1/dietlibc/libpthread/pthread_spinlock.c b/mdk-stage1/dietlibc/libpthread/pthread_spinlock.c
new file mode 100644
index 000000000..449782adf
--- /dev/null
+++ b/mdk-stage1/dietlibc/libpthread/pthread_spinlock.c
@@ -0,0 +1,38 @@
+#include <time.h>
+#include <pthread.h>
+#include "thread_internal.h"
+
+static void __pthread_acquire(int * spinlock)
+{
+  int cnt = 0;
+  struct timespec tm;
+
+  while (__testandset(spinlock)) {
+    if (cnt < MAX_SPIN_COUNT) {
+      sched_yield();
+      cnt++;
+    } else {
+      tm.tv_sec = 0;
+      tm.tv_nsec = SPIN_SLEEP_DURATION;
+      __libc_nanosleep(&tm, 0);
+      cnt = 0;
+    }
+  }
+}
+
+void __pthread_lock(struct _pthread_fastlock * lock)
+{
+  __pthread_acquire(&lock->__spinlock);
+}
+
+int __pthread_trylock(struct _pthread_fastlock * lock)
+{
+  return __testandset(&lock->__spinlock);
+}
+
+int __pthread_unlock(struct _pthread_fastlock * lock)
+{
+  return (lock->__spinlock = 0);
+}
+
+
-- 
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