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tis_mutex_lock(3)
NAME
  tis_mutex_lock - Locks an unlocked mutex

SYNOPSIS
  #include <tis.h>

  int tis_mutex_lock(
	  pthread_mutex_t *mutex );

LIBRARY
  Standard C Library (libc.so, libc.a)

STANDARDS
  None

PARAMETERS
  mutex
      Address of the mutex (passed by reference) to be locked.

DESCRIPTION
  This routine locks the specified mutex mutex. A deadlock can result if the
  current owner of a mutex calls this routine in an attempt to lock the same
  mutex a second time. (DECthreads does not detect or report the deadlock.)

  In a threaded environment, the thread that has locked a mutex becomes its
  current owner and remains the owner until the same thread has unlocked it.
  This routine returns with the mutex in the locked state and with the
  current thread as the mutex's current owner.

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 mutex is invalid.

  [EDEADLK]
      A deadlock condition is detected.

ERRORS
  None

SEE ALSO
  Functions: tis_mutex_destroy(3), tis_mutex_init(3), tis_mutex_trylock(3),
  tis_mutex_unlock(3)

  Manuals: Guide to DECthreads and Programmer's Guide

Index for Section 3

Alphabetical listing for T

Top of page