Manual Page Result
0
Command: pthread_condattr_init | Section: 3 | Source: Digital UNIX | File: pthread_condattr_init.3.gz
pthread_condattr_init(3) Library Functions Manual pthread_condattr_init(3)
NAME
pthread_condattr_init - Initializes a condition variable attributes ob-
ject.
LIBRARY
DECthreads POSIX 1003.1c Library (libpthread.so)
SYNOPSIS
#include <pthread.h>
int pthread_condattr_init(
pthread_condattr_t *attr);
STANDARDS
Interfaces documented on this reference page conform to industry stan-
dards as follows:
IEEE Std 1003.1c-1995, POSIX System Application Program Interface
PARAMETERS
Address of the condition variable attributes object to be initialized.
DESCRIPTION
This routine initializes the condition variable attributes object spec-
ified by the (attr) argument with a set of default attribute values.
When an attributes object is used to create a condition variable, the
values of the individual attributes determine the characteristics of
the new condition variable. Attributes objects act as additional argu-
ments to condition variable creation. Changing individual attributes
in an attributes object does not affect any condition variables that
were previously created using that attributes object.
You can use the same condition variable attributes object in successive
calls to pthread_condattr_init(3), from any thread. If multiple
threads can change attributes in a shared attributes object, your pro-
gram must use a mutex to protect the integrity of that attributes ob-
ject.
Results are undefined if this routine is called and the attr argument
specifies a condition variable attributes object that is already ini-
tialized.
RETURN VALUES
If an error condition occurs, this routine returns an integer value in-
dicating the type of error. Possible return values are as follows:
Successful completion. Insufficient memory exists to initialize the
condition variable attributes object.
ERRORS
None
RELATED INFORMATION
Functions: pthread_condattr_destroy(3), pthread_cond_init(3)
Manuals: Guide to DECthreads and Programmer's Guide
delim off
pthread_condattr_init(3)