From: sbrandt <sbrandt@29311d96-e01e-0410-9327-a35deaab8ce9>
Date: Wed, 22 Jun 2005 04:44:26 +0000 (+0000)
Subject: *** empty log message ***
X-Git-Tag: v0.1~2049
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=057aaef5d4584ab25143885e9ae9bbc1b347c7e6;p=ceph.git

*** empty log message ***


git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@332 29311d96-e01e-0410-9327-a35deaab8ce9
---

diff --git a/ceph/common/Semaphore.h b/ceph/common/Semaphore.h
new file mode 100644
index 0000000000000..f8821f7c686ae
--- /dev/null
+++ b/ceph/common/Semaphore.h
@@ -0,0 +1,37 @@
+#ifndef _Sem_Posix_
+#define _Sem_Posix_
+
+#include <cassert>
+
+class Semaphore
+{
+  Mutex m;
+  Cond c;
+  int count;
+
+  public:
+
+  Semaphore()
+  {
+    count = 0;
+  }
+
+  void Put()  { 
+    m.Lock();
+    count++;
+    c.Signal();
+    m.Unlock();
+  }
+
+  void Get() 
+  { 
+    m.Lock();
+    while(count <= 0) {
+      C.Wait(m);
+    }
+    count--;
+    m.Unlock();
+  }
+};
+
+#endif // !_Mutex_Posix_