osf1 man page for pthread_cond_signal_int_np

pthread_cond_signal_int_np(3)				     Library Functions Manual				     pthread_cond_signal_int_np(3)

NAME
       pthread_cond_signal_int_np - Wakes one thread that is waiting on the specified condition variable (called from interrupt level only).

LIBRARY
       DECthreads POSIX 1003.1c Library (libpthread.so)

SYNOPSIS
       #include <pthread.h>

       int pthread_cond_signal_int_np(
			   pthread_cond_t    *cond);

STANDARDS
       None

PARAMETERS
       Condition variable to be signaled.

DESCRIPTION
       This routine wakes one thread waiting on the specified condition variable.  It can only be called from a software interrupt handler routine
       (that is, from a Tru64 UNIX signal handler or OpenVMS AST).  Calling this routine implies that it might be possible for	a  single  waiting
       thread to proceed.

       The  scheduling policies of the waiting threads determine which thread is awakened.  For policies SCHED_FIFO and SCHED_RR, a blocked thread
       is chosen in priority order, using first-in/first-out (FIFO) within priorities.

       This routine does not cause a thread blocked on a condition variable to resume execution immediately. A thread resumes  execution  at  some
       time after the interrupt handler routine returns.

       You  can  call this routine regardless of whether the associated mutex is locked (by some other thread).  Never lock a mutex from an inter-
       rupt handler routine.

									  Note
       This routine allows you to signal a thread from a software interrupt handler.  Do not call this routine from noninterrupt code.	To  signal
       a thread from the normal noninterrupt level, use pthread_cond_signal(3).

RETURN VALUES
       If  an  error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are as follows:
       Successful completion.  The value specified by cond is invalid.

ERRORS
       None

RELATED INFORMATION
       Functions: pthread_cond_broadcast(3), pthread_cond_signal(3), pthread_cond_timedwait(3), pthread_cond_wait(3)

       Manuals: Guide to DECthreads and Programmer's Guide

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														     pthread_cond_signal_int_np(3)