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Code Issues

use mutex instead of spin lock

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This commit is contained in:
alexpeshkoff 2005-12-18 16:10:48 +00:00
parent 9177ea8765
commit addf657da0
1 changed files with 18 additions and 41 deletions
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59
src/common/classes/locks.h
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@ -51,7 +51,7 @@ namespace Firebird {
#ifdef MULTI_THREAD
#ifdef WIN_NT
/* Process-local spinlock. Used to manage memory heaps in threaded environment. */
// Process-local spinlock. Used to manage memory heaps in threaded environment.
// Windows version of the class
typedef WINBASEAPI DWORD WINAPI tSetCriticalSectionSpinCount (
@ -76,60 +76,35 @@ public:
}
};
#else
#else //WIN_NT
/* Process-local spinlock. Used to manage memory heaps in threaded environment. */
// Pthreads version of the class
#if !defined(SOLARIS_MT) && !defined(DARWIN) && !defined(FREEBSD) && !defined(NETBSD)
class Mutex {
private:
pthread_spinlock_t spinlock;
public:
Mutex() {
if (pthread_spin_init(&spinlock, false))
system_call_failed::raise("pthread_spin_init");
}
~Mutex() {
if (pthread_spin_destroy(&spinlock))
system_call_failed::raise("pthread_spin_destroy");
}
void enter() {
if (pthread_spin_lock(&spinlock))
system_call_failed::raise("pthread_spin_lock");
}
void leave() {
if (pthread_spin_unlock(&spinlock))
system_call_failed::raise("pthread_spin_unlock");
}
};
#else
#ifdef SOLARIS_MT
/* Who knows why Solaris 2.6 have not THIS funny spins?
Konstantin */
class Mutex {
private:
mutex_t spinlock;
mutex_t mlock;
public:
Mutex() {
if (mutex_init(&spinlock, USYNC_PROCESS, NULL))
if (mutex_init(&mlock, USYNC_PROCESS, NULL))
system_call_failed::raise("mutex_init");
}
~Mutex() {
if (mutex_destroy(&spinlock))
if (mutex_destroy(&mlock))
system_call_failed::raise("mutex_destroy");
}
void enter() {
if (mutex_lock(&spinlock))
if (mutex_lock(&mlock))
system_call_failed::raise("mutex_lock");
}
void leave() {
if (mutex_unlock(&spinlock))
if (mutex_unlock(&mlock))
system_call_failed::raise("mutex_unlock");
}
};
#else // DARWIN and FREEBSD and NETBSD
#else //SOLARIS_MT
// Pthreads version of the class
class Mutex {
private:
pthread_mutex_t mlock;
@ -151,11 +126,13 @@ public:
system_call_failed::raise("pthread_mutex_unlock");
}
};
#endif
#endif
#endif
#else
#endif //SOLARIS_MT
#endif //WIN_NT
#else //MULTI_THREAD
// Non-MT version
class Mutex {
public:
@ -169,7 +146,7 @@ public:
}
};
#endif /* MULTI_THREAD */
#endif //MULTI_THREAD
// RAII holder of mutex lock
class MutexLockGuard {