1 files changed, 74 insertions, 0 deletions
diff --git a/nsprpub/pr/src/cplus/rclock.h b/nsprpub/pr/src/cplus/rclock.h
new file mode 100644
index 0000000000..c86c2f17b6
--- /dev/null
+++ b/nsprpub/pr/src/cplus/rclock.h
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+** C++ access to NSPR locks (PRLock)
+*/
+
+#if defined(_RCLOCK_H)
+#else
+#define _RCLOCK_H
+
+#include "rcbase.h"
+
+#include <prlock.h>
+
+class PR_IMPLEMENT(RCLock): public RCBase
+{
+public:
+    RCLock();
+    virtual ~RCLock();
+
+    void Acquire();                 /* non-reentrant */
+    void Release();                 /* should be by owning thread */
+
+    friend class RCCondition;
+
+private:
+    RCLock(const RCLock&);          /* can't do that */
+    void operator=(const RCLock&);  /* nor that */
+
+    PRLock *lock;
+};  /* RCLock */
+
+/*
+** Class: RCEnter
+**
+** In scope locks. You can only allocate them on the stack. The language
+** will insure that they get released (by calling the destructor) when
+** the thread leaves scope, even if via an exception.
+*/
+class PR_IMPLEMENT(RCEnter)
+{
+public:
+    ~RCEnter();                     /* releases the lock */
+    RCEnter(RCLock*);               /* acquires the lock */
+
+private:
+    RCLock *lock;
+
+    RCEnter();
+    RCEnter(const RCEnter&);
+    void operator=(const RCEnter&);
+
+    void *operator new(PRSize) {
+        return NULL;
+    }
+    void operator delete(void*) { }
+};  /* RCEnter */
+
+
+inline RCEnter::RCEnter(RCLock* ml) {
+    lock = ml;
+    lock->Acquire();
+}
+inline RCEnter::~RCEnter() {
+    lock->Release();
+    lock = NULL;
+}
+
+#endif /* defined(_RCLOCK_H) */
+
+/* RCLock.h */