diff options
Diffstat (limited to 'cpp/include/IceUtil/RecMutex.h')
| -rw-r--r-- | cpp/include/IceUtil/RecMutex.h | 223 |
1 files changed, 112 insertions, 111 deletions
diff --git a/cpp/include/IceUtil/RecMutex.h b/cpp/include/IceUtil/RecMutex.h index 974652cea50..8aab8c48a21 100644 --- a/cpp/include/IceUtil/RecMutex.h +++ b/cpp/include/IceUtil/RecMutex.h @@ -1,111 +1,112 @@ -// ********************************************************************** -// -// Copyright (c) 2001 -// Mutable Realms, Inc. -// Huntsville, AL, USA -// -// All Rights Reserved -// -// ********************************************************************** - -#ifndef ICE_UTIL_RMUTEX_H -#define ICE_UTIL_RMUTEX_H - -#include <IceUtil/Config.h> -#include <IceUtil/Lock.h> - -namespace IceUtil -{ - -// -// Forward declarations for friend. -// -class Cond; - -// -// Recursive Mutex implementation. -// -class ICE_UTIL_API RecMutex -{ -public: - - // - // Lock & TryLock typedefs. - // - typedef Lock<RecMutex> Lock; - typedef TryLock<RecMutex> TryLock; - - RecMutex(); - ~RecMutex(); - - // - // Note that lock/trylock & unlock in general should not be used - // directly. Instead use Lock & TryLock. - // - - // - // The boolean values are for the Monitor implementation which - // needs to know whether the Mutex has been locked for the first - // time, or unlocked for the last time (that is another thread is - // able to acquire the mutex). - // - - // - // Return true if the mutex has been locked for the first time. - // - bool lock() const; - - // - // Throw LockedException in the case that the lock call would - // block (that is the mutex is already owned by some other - // thread). Returns true if the mutex has been locked for the - // first time. - // - bool trylock() const; - - // - // Returns true if the mutex has been unlocked for the last time - // (false otherwise). - // - bool unlock() const; - -private: - - // noncopyable - RecMutex(const RecMutex&); - void operator=(const RecMutex&); - - // - // LockState and the lock/unlock variations are for use by the - // Condition variable implementation. - // -#ifdef _WIN32 - struct LockState - { - int count; - }; -#else - struct LockState - { - pthread_mutex_t* mutex; - int count; - }; -#endif - - void unlock(LockState&) const; - void lock(LockState&) const; - - friend class Cond; - -#ifdef _WIN32 - mutable CRITICAL_SECTION _mutex; -#else - mutable pthread_mutex_t _mutex; -#endif - - mutable int _count; -}; - -} // End namespace IceUtil - -#endif +// **********************************************************************
+//
+// Copyright (c) 2001
+// Mutable Realms, Inc.
+// Huntsville, AL, USA
+//
+// All Rights Reserved
+//
+// **********************************************************************
+
+#ifndef ICE_UTIL_RMUTEX_H
+#define ICE_UTIL_RMUTEX_H
+
+#include <IceUtil/Config.h>
+#include <IceUtil/Lock.h>
+#include <IceUtil/ThreadException.h>
+
+namespace IceUtil
+{
+
+//
+// Forward declarations for friend.
+//
+class Cond;
+
+//
+// Recursive Mutex implementation.
+//
+class ICE_UTIL_API RecMutex
+{
+public:
+
+ //
+ // Lock & TryLock typedefs.
+ //
+ typedef Lock<RecMutex> Lock;
+ typedef TryLock<RecMutex> TryLock;
+
+ RecMutex();
+ ~RecMutex();
+
+ //
+ // Note that lock/trylock & unlock in general should not be used
+ // directly. Instead use Lock & TryLock.
+ //
+
+ //
+ // The boolean values are for the Monitor implementation which
+ // needs to know whether the Mutex has been locked for the first
+ // time, or unlocked for the last time (that is another thread is
+ // able to acquire the mutex).
+ //
+
+ //
+ // Return true if the mutex has been locked for the first time.
+ //
+ bool lock() const;
+
+ //
+ // Throw ThreadLockedException in the case that the lock call would
+ // block (that is the mutex is already owned by some other
+ // thread). Returns true if the mutex has been locked for the
+ // first time.
+ //
+ bool trylock() const;
+
+ //
+ // Returns true if the mutex has been unlocked for the last time
+ // (false otherwise).
+ //
+ bool unlock() const;
+
+private:
+
+ // noncopyable
+ RecMutex(const RecMutex&);
+ void operator=(const RecMutex&);
+
+ //
+ // LockState and the lock/unlock variations are for use by the
+ // Condition variable implementation.
+ //
+#ifdef _WIN32
+ struct LockState
+ {
+ int count;
+ };
+#else
+ struct LockState
+ {
+ pthread_mutex_t* mutex;
+ int count;
+ };
+#endif
+
+ void unlock(LockState&) const;
+ void lock(LockState&) const;
+
+ friend class Cond;
+
+#ifdef _WIN32
+ mutable CRITICAL_SECTION _mutex;
+#else
+ mutable pthread_mutex_t _mutex;
+#endif
+
+ mutable int _count;
+};
+
+} // End namespace IceUtil
+
+#endif
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