mirror of https://github.com/VDR4Arch/vdr.git
59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
/*
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* thread.h: A simple thread base class
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: thread.h 1.2 2000/10/28 15:08:09 kls Exp $
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*/
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#ifndef __THREAD_H
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#define __THREAD_H
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#include <pthread.h>
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#include <sys/types.h>
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class cThread {
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friend class cThreadLock;
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private:
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pthread_t thread;
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pthread_mutex_t mutex;
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pid_t parentPid, lockingPid;
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int locked;
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bool running;
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static bool signalHandlerInstalled;
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static void SignalHandler(int signum);
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static void *StartThread(cThread *Thread);
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bool Lock(void);
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void Unlock(void);
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protected:
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void WakeUp(void);
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virtual void Action(void) = 0;
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void Stop(void);
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public:
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cThread(void);
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virtual ~cThread();
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bool Start(void);
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};
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// cThreadLock can be used to easily set a lock in a thread and make absolutely
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// sure that it will be unlocked when the block will be left. Several locks can
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// be stacked, so a function that makes many calls to another function which uses
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// cThreadLock may itself use a cThreadLock to make one longer lock instead of many
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// short ones.
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class cThreadLock {
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private:
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cThread *thread;
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bool locked;
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public:
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cThreadLock(cThread *Thread = NULL);
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~cThreadLock();
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bool Lock(cThread *Thread);
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bool Locked(void);
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};
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#define LOCK_THREAD cThreadLock ThreadLock(this)
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#endif //__THREAD_H
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