Imported Upstream version 3.3.0.2upstream/3.3.0.2

1 files changed, 54 insertions, 0 deletions

diff --git a/libcult/cult/sched/mutex.cxx b/libcult/cult/sched/mutex.cxx
new file mode 100644
index 0000000..9667a67
--- /dev/null
+++ b/libcult/cult/sched/mutex.cxx
@@ -0,0 +1,54 @@
+// file      : cult/sched/mutex.cxx
+// author    : Boris Kolpackov <boris@kolpackov.net>
+// copyright : Copyright (c) 2005-2010 Boris Kolpackov
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#include <cult/sched/mutex.hxx>
+#include <cult/sched/exception.hxx>
+
+namespace Cult
+{
+  namespace Sched
+  {
+    Mutex::
+    ~Mutex ()
+    {
+      if (Int e = pthread_mutex_destroy (&mutex_))
+        throw Implementation (e);
+    }
+
+    Mutex::
+    Mutex ()
+    {
+      if (Int e = pthread_mutex_init (&mutex_, 0))
+        throw Implementation (e);
+    }
+
+    Void Mutex::
+    lock ()
+    {
+      if (Int e = pthread_mutex_lock (&mutex_))
+        throw Implementation (e);
+    }
+
+    Boolean Mutex::
+    try_lock ()
+    {
+      Int e (pthread_mutex_trylock (&mutex_));
+
+      switch (e)
+      {
+      case 0: return true;
+      case EBUSY: return false;
+      default: throw Implementation (e);
+      }
+    }
+
+    Void Mutex::
+    unlock ()
+    {
+      if (Int e = pthread_mutex_unlock (&mutex_))
+        throw Implementation (e);
+    }
+  }
+}