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thread.h

Go to the documentation of this file.

#ifndef __THREAD_H
#define __THREAD_H

#include <pthread.h>
#include <stdio.h>
#include <sys/types.h>

class cMutex;

class cCondVar {
private:
  pthread_cond_t cond;
public:
  cCondVar(void);
  ~cCondVar();
  void Wait(cMutex &Mutex);
  bool TimedWait(cMutex &Mutex, int TimeoutMs);
  void Broadcast(void);
  //void Signal(void);
  };

class cMutex {
  friend class cCondVar;
private:
  pthread_mutex_t mutex;
  pid_t lockingPid;
  int locked;
public:
  cMutex(void);
  ~cMutex();
  void Lock(void);
  void Unlock(void);
  };

class cThread {
  friend class cThreadLock;
private:
  pthread_t thread;
  cMutex mutex;
  pid_t parentPid, threadPid;
  bool running;
  static time_t lastPanic;
  static int panicLevel;
  static bool emergencyExitRequested;
  static bool signalHandlerInstalled;
  static void SignalHandler(int signum);
  static void *StartThread(cThread *Thread);
protected:
  void Lock(void) { mutex.Lock(); }
  void Unlock(void) { mutex.Unlock(); }
  void WakeUp(void);
  virtual void Action(void) = 0;
  void Cancel(int WaitSeconds = 0);
public:
  cThread(void);
  virtual ~cThread();
  bool Start(void);
  bool Active(void);
  static void RaisePanic(void);
  static bool EmergencyExit(bool Request = false);
  };

class cMutexLock {

private:
  cMutex *mutex;
  bool locked;
public:
  cMutexLock(cMutex *Mutex = NULL);
  ~cMutexLock();
  bool Lock(cMutex *Mutex);
  };

class cThreadLock {

private:
  cThread *thread;
  bool locked;
public:
  cThreadLock(cThread *Thread = NULL);
  ~cThreadLock();
  bool Lock(cThread *Thread);
  };

#define LOCK_THREAD cThreadLock ThreadLock(this)

class cPipe {

private:
  pid_t pid;
  FILE *f;
public:
  cPipe(void);
  ~cPipe();
  operator FILE* () { return f; }
  bool Open(const char *Command, const char *Mode);
  int Close(void);
  };

int SystemExec(const char *Command);

#endif //__THREAD_H

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