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pthread_spin_destroy (3)
  • pthread_spin_destroy (3) ( Solaris man: Библиотечные вызовы )
  • >> pthread_spin_destroy (3) ( FreeBSD man: Библиотечные вызовы )
  • pthread_spin_destroy (3) ( POSIX man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    pthread_spin_init , pthread_spin_destroy
    
     - initialize or destroy a spin lock
    
     
    

    LIBRARY

    Lb libpthread
    
     
    

    SYNOPSIS

       #include <pthread.h>
    int pthread_spin_init (pthread_spinlock_t *lock int pshared);
    int pthread_spin_destroy (pthread_spinlock_t *lock);
     

    DESCRIPTION

    The pthread_spin_init ();
    function will initialize Fa lock to an unlocked state and allocate any resources necessary to begin using it. If Fa pshared is set to PTHREAD_PROCESS_SHARED any thread, whether belonging to the process in which the spinlock was created or not, that has access to the memory area where Fa lock resides, can use Fa lock . If it is set to PTHREAD_PROCESS_PRIVATE it can only be used by threads within the same process.

    The pthread_spin_destroy ();
    function will destroy Fa lock and release any resources that may have been allocated on its behalf.  

    RETURN VALUES

    If successful, both pthread_spin_init ();
    and pthread_spin_destroy ();
    will return zero. Otherwise, an error number will be returned to indicate the error.

    Neither of these functions will return Er EINTR .  

    ERRORS

    The pthread_spin_init ();
    and pthread_spin_destroy ();
    functions will fail if:

    Bq Er EBUSY
    An attempt to initialize or destroy Fa lock while it is in use.
    Bq Er EINVAL
    The value specified by Fa lock is invalid.

    The pthread_spin_init ();
    function will fail if:

    Bq Er EAGAIN
    Insufficient resources, other than memory, to initialize Fa lock .
    Bq Er ENOMEM
    Insufficient memory to initialize Fa lock .

     

    SEE ALSO

    pthread_spin_lock3, pthread_spin_unlock3  

    HISTORY

    The pthread_spin_init ();
    and pthread_spin_destroy ();
    functions first appeared in Lb libkse in Fx 5.2 , and in Lb libthr in Fx 5.3 .  

    BUGS

    The implementation of pthread_spin_init ();
    does not fully conform to St -p1003.2 because the Fa pshared argument is ignored in Lb libthr , and in Lb libkse if any value other than PTHREAD_PROCESSES_PRIVATE is specified, it returns Er EINVAL .


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    HISTORY
    BUGS


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