Professional Multicore Programming: Design and Implementation for C++ Developers

Name

NAME

pthread_attr_destroy, pthread_attr_init — destroy and initialize the thread attributes object

SYNOPSIS

THR #include <pthread.h>

    int pthread_attr_destroy(pthread_attr_t *attr);
    int pthread_attr_init(pthread_attr_t *attr);

DESCRIPTION

The pthread_attr_destroy() function shall destroy a thread attributes object. An implementation may cause pthread_attr_destroy() to set attr to an implementation-defined invalid value. A destroyed attr attributes object can be reinitialized using pthread_attr_init(); the results of otherwise referencing the object after it has been destroyed are undefined.

The pthread_attr_init() function shall initialize a thread attributes object attr with the default value for all of the individual attributes used by a given implementation.

The resulting attributes object (possibly modified by setting individual attribute values) when used by pthread_create() defines the attributes of the thread created. A single attributes object can be used in multiple simultaneous calls to pthread_create(). Results are undefined if pthread_attr_init() is called specifying an already initialized attr attributes object.

RETURN VALUE

Upon successful completion, pthread_attr_destroy() and pthread_attr_init() shall return a value of 0; otherwise, an error number shall be returned to indicate the error.

ERRORS

The pthread_attr_init() function shall fail if:

[ENOMEM]

Insufficient memory exists to initialize the thread attributes object.

These functions shall not return an error code of [EINTR]. ...