From 7cd9cf303c824478f0f6d60cadfcc1a25bdb21f2 Mon Sep 17 00:00:00 2001
From: Andy Schwerin <schwerin@mongodb.com>
Date: Fri, 27 Feb 2015 18:33:28 -0500
Subject: SERVER-17310 Make mongo::mutex a typedef of boost::mutex and remove
 mongo::scoped_lock.

---
 src/mongo/db/commands/dbhash.cpp | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

(limited to 'src/mongo/db/commands/dbhash.cpp')

diff --git a/src/mongo/db/commands/dbhash.cpp b/src/mongo/db/commands/dbhash.cpp
index 9d42024210d..bf0f43dcc9b 100644
--- a/src/mongo/db/commands/dbhash.cpp
+++ b/src/mongo/db/commands/dbhash.cpp
@@ -62,9 +62,7 @@ namespace mongo {
 
     // ----
 
-    DBHashCmd::DBHashCmd()
-        : Command( "dbHash", false, "dbhash" ),
-          _cachedHashedMutex( "_cachedHashedMutex" ){
+    DBHashCmd::DBHashCmd() : Command("dbHash", false, "dbhash") {
     }
 
     void DBHashCmd::addRequiredPrivileges(const std::string& dbname,
@@ -75,11 +73,14 @@ namespace mongo {
         out->push_back(Privilege(ResourcePattern::forDatabaseName(dbname), actions));
     }
 
-    string DBHashCmd::hashCollection( OperationContext* opCtx, Database* db, const string& fullCollectionName, bool* fromCache ) {
-        scoped_ptr<scoped_lock> cachedHashedLock;
+    std::string DBHashCmd::hashCollection(OperationContext* opCtx,
+                                          Database* db,
+                                          const std::string& fullCollectionName,
+                                          bool* fromCache) {
+        boost::unique_lock<boost::mutex> cachedHashedLock(_cachedHashedMutex, boost::defer_lock);
 
         if ( isCachable( fullCollectionName ) ) {
-            cachedHashedLock.reset( new scoped_lock( _cachedHashedMutex ) );
+            cachedHashedLock.lock();
             string hash = _cachedHashed[fullCollectionName];
             if ( hash.size() > 0 ) {
                 *fromCache = true;
@@ -133,7 +134,7 @@ namespace mongo {
         md5_finish(&st, d);
         string hash = digestToString( d );
 
-        if ( cachedHashedLock.get() ) {
+        if (cachedHashedLock.owns_lock()) {
             _cachedHashed[fullCollectionName] = hash;
         }
 
@@ -225,7 +226,7 @@ namespace mongo {
 
         }
         void commit() {
-            scoped_lock lk( _dCmd->_cachedHashedMutex );
+            boost::lock_guard<boost::mutex> lk( _dCmd->_cachedHashedMutex );
             _dCmd->_cachedHashed.erase(_ns);
         }
         void rollback() { }
-- 
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