Page Speed Optimization Libraries  1.5.27.2
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines
Public Member Functions
net_instaweb::CheckingThreadSystem::RWLock Class Reference

#include "checking_thread_system.h"

Inheritance diagram for net_instaweb::CheckingThreadSystem::RWLock:
net_instaweb::ThreadSystem::RWLock net_instaweb::AbstractMutex

List of all members.

Public Member Functions

 RWLock (ThreadSystem::RWLock *lock)
virtual bool TryLock ()
 Attempt to take mutex, true on success, false if held by another thread.
virtual void Lock ()
 Block until mutex is available, then take the mutex.
virtual void Unlock ()
 Release the mutex, permitting a blocked lock operation (if any) to proceed.
virtual bool ReaderTryLock ()
virtual void ReaderLock ()
 Block until this Mutex is free, or shared, then acquire a share of it.
virtual void ReaderUnlock ()
 Release a read share of this Mutex.
virtual void DCheckLocked ()
 This implementation of DCheckLocked CHECK-fails if lock is not held.
virtual void DCheckReaderLocked ()

Detailed Description

We also expose CheckingThreadSystem::RWLock, which wraps a RWLock to provide read/write capable locks. This class can be used to wrap unchecked mutexes provided by other CheckingThreadSystems.


Member Function Documentation

Optionally checks that reader lock is held (for invariant checking purposes). Default implementation does no checking.

Reimplemented from net_instaweb::ThreadSystem::RWLock.

ReaderLock/Unlock are different from normal locks. Reader locks are shared while normal locks are exclusive. Normal lock cannot happen when reader has a lock. Try to acquire a read share of this lock without blocking.

Implements net_instaweb::ThreadSystem::RWLock.


The documentation for this class was generated from the following file:
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines