**python : passing list as argument and updating in definition Post: 302952012

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pthread_spin_trylock

pthread_spin_lock(3C)					   Standard C Library Functions 				     pthread_spin_lock(3C)

NAME

       pthread_spin_lock, pthread_spin_trylock - lock a spin lock object

SYNOPSIS

       cc -mt [ flag... ] file... [ library... ]
       #include <pthread.h>

       int pthread_spin_lock(pthread_spinlock_t *lock);

       #include <pthread.h>

       int pthread_spin_trylock(pthread_spinlock_t *lock);

DESCRIPTION

       The  pthread_spin_lock() function locks the spin lock referenced by lock. The calling thread acquires the lock if it is not held by another
       thread. Otherwise, the thread spins (that is, does not return from the pthread_spin_lock call()) until  the  lock  becomes  available.  The
       results are undefined if the calling thread holds the lock at the time the call is made.

       The pthread_spin_trylock() function locks the spin lock referenced by lock if it is not held by any thread. Otherwise, the function fails.

       The results are undefined if either of these functions is called with an uninitialized spin lock.

RETURN VALUES

       Upon successful completion, these functions returns 0. Otherwise, an error number is returned to indicate the error.

ERRORS

       The pthread_spin_trylock() function will fail if:

       EBUSY	A thread currently holds the lock.

       These functions may fail if:

       EINVAL	 The value specified by lock does not refer to an initialized spin lock object.

       The pthread_spin_lock() function may fail if:

       EDEADLK	  The calling thread already holds the lock.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pthread_spin_destroy(3C), pthread_spin_unlock(3C), attributes(5), standards(5)

SunOS 5.11							    30 Jan 2004 					     pthread_spin_lock(3C)

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