Index Index for
Section 3
Index Alphabetical
listing for P
Bottom of page Bottom of
page		 

pthread_cond_broadcast(3)


NAME

  pthread_cond_broadcast - Wakes all threads that are waiting on the
  specified condition variable


SYNOPSIS

  #include <pthread.h>

  int pthread_cond_broadcast(
	  pthread_cond_t *cond );


LIBRARY

  DECthreads POSIX 1003.1c Library (libpthread.so)


STANDARDS

  Interfaces documented on this reference page conform to industry standards
  as follows:

  IEEE Std 1003.1c-1995, POSIX System Application Program Interface


PARAMETERS

  cond
      Condition variable upon which the threads (to be awakened) are waiting.


DESCRIPTION

  This routine unblocks all threads waiting on the specified condition
  variable cond. Calling this routine implies that data guarded by the
  associated mutex has changed, so that it might be possible for one or more
  waiting threads to proceed.  The threads that are unblocked shall contend
  for the mutex according to their respective scheduling policies (if
  applicable).

  If only one of the threads waiting on a condition variable may be able to
  proceed, but any single thread can proceed, then use pthread_cond_signal(3)
  instead.

  Whether the associated mutex is locked or unlocked, you can still call this
  routine. However, if predictable scheduling behavior is required, that
  mutex should then be locked by the thread calling the
  pthread_cond_broadcast(3) routine.

  If no threads are waiting on the specified condition variable, this routine
  takes no action. The broadcast does not propagate to the next condition
  variable wait.


RETURN VALUES

  If an error condition occurs, this routine returns an integer value
  indicating the type of error. Possible return values are as follows:

  0   Successful completion.

  [EINVAL]
      The value specified by cond is invalid.


ERRORS

  None


SEE ALSO

  Functions: pthread_cond_destroy(3), pthread_cond_init(3),
  pthread_cond_signal(3), pthread_cond_timedwait(3), pthread_cond_wait(3)

  Manuals: Guide to DECthreads and Programmer's Guide

Index Index for
Section 3
Index Alphabetical
listing for P
Top of page Top of
page