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_lwp_cond_signal (2)
  • >> _lwp_cond_signal (2) ( Solaris man: Системные вызовы )
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    NAME

    _lwp_cond_signal, _lwp_cond_broadcast - signal a condition variable
     
    

    SYNOPSIS

    #include <sys/lwp.h>
    
    int _lwp_cond_signal(lwp_cond_t *cvp);
    

    int _lwp_cond_broadcast(lwp_cond_t *cvp);
    

     

    DESCRIPTION

    The _lwp_cond_signal() function unblocks one LWP that is blocked on the LWP condition variable pointed to by cvp.

    The _lwp_cond_broadcast() function unblocks all LWPs that are blocked on the LWP condition variable pointed to by cvp.

    If no LWPs are blocked on the LWP condition variable, then _lwp_cond_signal() and _lwp_cond_broadcast() have no effect.

    Both functions should be called under the protection of the same LWP mutex lock that is used with the LWP condition variable being signaled. Otherwise, the condition variable may be signalled between the test of the associated condition and blocking in _lwp_cond_wait(). This can cause an infinite wait.  

    RETURN VALUES

    Upon successful completion, 0 is returned. A non-zero value indicates an error.  

    ERRORS

    The _lwp_cond_signal() and _lwp_cond_broadcast() functions will fail if:

    EINVAL

    The cvp argument points to an invalid LWP condition variable.

    EFAULT

    The cvp argument points to an invalid address.

     

    SEE ALSO

    _lwp_cond_wait(2), _lwp_mutex_lock(2)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO


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