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Pthread_mutex_destroy Error Codes

destroy and initialize a mutex SYNOPSIS [THR] [Option Start] #include <Pthread_mutex_destroy Example href="../basedefs/pthread.h.html">pthread.h>

int pthread_mutex_destroy(pthread_mutex_t *
mutex);
int pthread_mutex_init(pthread_mutex_t *restrict
mutex,
pthread_mutex_destroy ebusy const pthread_mutexattr_t *restrict
attr);
pthread_mutex_t
mutex = PTHREAD_MUTEX_INITIALIZER; [Option End] DESCRIPTION

Pthread_mutex_destroy Error 16

The pthread_mutex_destroy() function shall destroy the mutex object referenced by mutex; the mutex object becomes, in effect, uninitialized. An implementation may cause pthread_mutex_destroy() to pthread_mutex_destroy necessary set the object referenced by mutex to an invalid value. A destroyed mutex object can be reinitialized using pthread_mutex_init(); the results of otherwise referencing the object after it has been destroyed are undefined. It shall be safe to destroy an initialized mutex that is unlocked. Attempting to destroy a locked pthread mutex example mutex results in undefined behavior. The pthread_mutex_init() function shall initialize the mutex referenced by mutex with attributes specified by attr. If attr is NULL, the default mutex attributes are used; the effect shall be the same as passing the address of a default mutex attributes object. Upon successful initialization, the state of the mutex becomes initialized and unlocked. Only mutex itself may be used for performing synchronization. The result of referring to copies of mutex in calls to pthread_mutex_lock(), pthread_mutex_trylock(), pthread_mutex_unlock(), and pthread_mutex_destroy() is undefined. Attempting to initialize an already initialized mutex results in undefined behavior. In cases where default mutex attributes are appropriate, the macro PTHREAD_MUTEX_INITIALIZER can be used to initialize mutexes that are statically allocated. The effect shall be equivalent to dynamic initialization by a call to pthread_mutex_init() with parameter attr specified as NULL, except that no error checks are performed. RETURN VALUE If successful, t

the interface may not be implemented on Linux. Name pthread_mutex_destroy, pthread_mutex_init - destroy and initialize a mutex Synopsis #include int pthread_mutex_destroy(pthread_mutex_t *mutex); int pthread_mutex_init(pthread_mutex_t *restrict mutex, const pthread_mutexattr_t *restrict attr); pthread_mutex_t

Pthread_mutex_initializer Vs Pthread_mutex_init

mutex = PTHREAD_MUTEX_INITIALIZER; Description The pthread_mutex_destroy() function shall destroy the mutex object referenced pthread_cond_destroy by mutex; the mutex object becomes, in effect, uninitialized. An implementation may cause pthread_mutex_destroy() to set the object referenced by

Pthread_mutex_t Mutex

mutex to an invalid value. A destroyed mutex object can be reinitialized using pthread_mutex_init(); the results of otherwise referencing the object after it has been destroyed are undefined. It shall be safe to http://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_mutex_destroy.html destroy an initialized mutex that is unlocked. Attempting to destroy a locked mutex results in undefined behavior. The pthread_mutex_init() function shall initialize the mutex referenced by mutex with attributes specified by attr. If attr is NULL, the default mutex attributes are used; the effect shall be the same as passing the address of a default mutex attributes object. Upon successful initialization, the state of the mutex becomes https://linux.die.net/man/3/pthread_mutex_destroy initialized and unlocked. Only mutex itself may be used for performing synchronization. The result of referring to copies of mutex in calls to pthread_mutex_lock(), pthread_mutex_trylock(), pthread_mutex_unlock(), and pthread_mutex_destroy() is undefined. Attempting to initialize an already initialized mutex results in undefined behavior. In cases where default mutex attributes are appropriate, the macro PTHREAD_MUTEX_INITIALIZER can be used to initialize mutexes that are statically allocated. The effect shall be equivalent to dynamic initialization by a call to pthread_mutex_init() with parameter attr specified as NULL, except that no error checks are performed. Return Value If successful, the pthread_mutex_destroy() and pthread_mutex_init() functions shall return zero; otherwise, an error number shall be returned to indicate the error. The [EBUSY] and [EINVAL] error checks, if implemented, act as if they were performed immediately at the beginning of processing for the function and shall cause an error return prior to modifying the state of the mutex specified by mutex. Errors The pthread_mutex_destroy() function may fail if: EBUSY The implementation has detected an attempt to destroy the object referenced by mutex while it is locked or referenced (for example, while being used in a pthread_cond_timedwait() or pthread_cond_wait()) by another thread. EINVAL The value specified by mutex i

- operations on mutexes Synopsis #include #include pthread_mutex_t fastmutex = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER; pthread_mutex_t errchkmutex = https://www.sourceware.org/pthreads-win32/manual/pthread_mutex_init.html PTHREAD_ERRORCHECK_MUTEX_INITIALIZER; pthread_mutex_t recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; pthread_mutex_t errchkmutex = http://jrgraphix.net/man/P/pthread_mutex_destroy PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP; int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr); int pthread_mutex_lock(pthread_mutex_t *mutex); int pthread_mutex_trylock(pthread_mutex_t *mutex); int pthread_mutex_timedlock(pthread_mutex_t *mutex, const struct timespec *abs_timeout); int pthread_mutex_unlock(pthread_mutex_t *mutex); int pthread_mutex_consistent(pthread_mutex_t *mutex); int pthread_mutex_destroy(pthread_mutex_t *mutex); Description A mutex pthread_mutex_destroy error is a MUTual EXclusion device, and is useful for protecting shared data structures from concurrent modifications, and implementing critical sections and monitors. A mutex has two possible states: unlocked (not owned by any thread), and locked (owned by one thread). A pthread_mutex_destroy error codes mutex can never be owned by two different threads simultaneously. A thread attempting to lock a mutex that is already locked by another thread is suspended until the owning thread unlocks the mutex first. pthread_mutex_init initializes the mutex object pointed to by mutex according to the mutex attributes specified in mutexattr. If mutexattr is NULL, default attributes are used instead. The type of a mutex determines whether it can be locked again by a thread that already owns it. The default type is “normal�. See pthread_mutexattr_init(3) for more information on mutex attributes. Variables of type pthread_mutex_t can also be initialized statically, using the constants PTHREAD_MUTEX_INITIALIZER (for normal “fast� mutexes), PTHREAD_RECURSIVE_MUTEX_INITIALIZER (for recursive mutexes), and PTHREAD_ERRORCHECK_MUTEX_INITIALIZER (for error checking mutexe

mutexes SYNOPSIS #include pthread_mutex_t fastmutex = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; pthread_mutex_t errchkmutex = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP; int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutex- attr_t *mutexattr); int pthread_mutex_lock(pthread_mutex_t *mutex); int pthread_mutex_trylock(pthread_mutex_t *mutex); int pthread_mutex_unlock(pthread_mutex_t *mutex); int pthread_mutex_destroy(pthread_mutex_t *mutex); DESCRIPTION A mutex is a MUTual EXclusion device, and is useful for protecting shared data structures from concurrent modifications, and implementing critical sections and monitors. A mutex has two possible states: unlocked (not owned by any thread), and locked (owned by one thread). A mutex can never be owned by two different threads simultaneously. A thread attempting to lock a mutex that is already locked by another thread is suspended until the owning thread unlocks the mutex first. pthread_mutex_init initializes the mutex object pointed to by mutex according to the mutex attributes specified in mutexattr. If mutexattr is NULL, default attributes are used instead. The LinuxThreads implementation supports only one mutex attributes, the mutex kind, which is either ``fast'', ``recursive'', or ``error check- ing''. The kind of a mutex determines whether it can be locked again by a thread that already owns it. The default kind is ``fast''. See pthread_mutexattr_init(3) for more information on mutex attributes. Variables of type pthread_mutex_t can also be initialized statically, using the constants PTHREAD_MUTEX_INITIALIZER (for fast mutexes), PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP (for recursive mutexes), and PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP (for error checking mutexes). pthread_mutex_lock locks the given mutex. If the mutex is currently unlocked, it becomes locked and owned by the calling thread, and pthread_mutex_lock returns immediately. If the mutex is already locked by another thread, pthread_mutex_lock suspends the calling thread until the mutex is unlocked.

 

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pthread_mutex_destroy error 16

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pthread_mutex_destroy error code 16

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