basemutex.h

#pragma once
 
#include "baseexception.h"
 
 
// MOO NOTE: This should probably not be used any more in new code, instead use std::mutex
// The problems it addressed have largely been solved by better runtime checking
// and debugger support.
 
 
class IMutexLocker {
public:
 IMutexLocker(QMutex *mutex) : mutex_(mutex), locked_(true) {
 assert(mutex_);
 mutex_->lock();
 }
 IMutexLocker(QMutex *mutex,int time,int line,const char *file) : mutex_(mutex), locked_(false) { 
 assert(mutex_);
 if (not mutex_->tryLock(time))
 throw Exception("Mutex timeout in {} / {}.",line,file);
 locked_ = true;
 }
 ~IMutexLocker() { if (mutex_ and locked_) mutex_->unlock(); }
 QMutex *mutex() { return mutex_; }
 void unlock() { if (mutex_ and locked_) { mutex_->unlock(); locked_ = false; } }
 void relock(int time=30000,int line=0,const char *file=0) { 
 if (mutex_ && not locked_) { 
 if (!mutex_->tryLock(time))
 throw Exception("Mutex timeout in %1 / %2.",line,file);
 locked_ = true;
 }
 }
private:
 QMutex *mutex_;
 bool locked_;
};
 
#define LOCK_MUTEX1(mutexpnt) IMutexLocker default_mutex_name(mutexpnt,30000,__LINE__,__FILE__)
#define LOCK_MUTEX2(name,mutexpnt) IMutexLocker name(mutexpnt,30000,__LINE__,__FILE__)
#define LOCK_MUTEX3(name,mutexpnt,time) IMutexLocker name(mutexpnt,time,__LINE__,__FILE__)
#define QMutexLocker ERROR_SHOULD_NOT_CREATE_DIRECTLY
 
// EoF