From 0a9f914076a8143c6b4f9e595e42be3b5c778dd1 Mon Sep 17 00:00:00 2001
From: Jeff Hill <johill@lanl.gov>
Date: Wed, 21 Mar 2001 01:02:35 +0000
Subject: [PATCH] added epicsAutoMutexRelease

---
 src/libCom/osi/epicsMutex.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/libCom/osi/epicsMutex.h b/src/libCom/osi/epicsMutex.h
index ef34083a0..12c032acb 100644
--- a/src/libCom/osi/epicsMutex.h
+++ b/src/libCom/osi/epicsMutex.h
@@ -41,6 +41,19 @@ private:
     epicsMutex & rMutex;
 };
 
+// Automatically releases and reapplies the mutex.
+// This is for use in situations where C++ exceptions are possible.
+class epicsAutoMutexRelease {
+public:
+    epicsAutoMutexRelease ( epicsMutex & );
+    ~epicsAutoMutexRelease ();
+private:
+    epicsAutoMutexRelease ( const epicsAutoMutex & );
+    epicsAutoMutexRelease & operator = ( const epicsAutoMutex & );
+    epicsMutex & rMutex;
+};
+
+
 #endif /*__cplusplus*/
 
 #ifdef __cplusplus
@@ -147,6 +160,17 @@ inline epicsAutoMutex :: ~epicsAutoMutex ()
     this->rMutex.unlock ();
 }
 
+inline epicsAutoMutexRelease :: epicsAutoMutexRelease ( epicsMutex & mutexIn ) :
+    rMutex ( mutexIn )
+{
+    this->rMutex.unlock ();
+}
+
+inline epicsAutoMutexRelease :: ~epicsAutoMutexRelease ()
+{
+    this->rMutex.lock ();
+}
+
 #endif /*__cplusplus*/
 
 #endif /* epicsMutexh */