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

Name

NAME

posix_spawnattr_destroy, posix_spawnattr_init — destroy and initialize spawn attributes object (ADVANCED REALTIME)

SYNOPSIS

SPN #include <spawn.h>

    int posix_spawnattr_destroy(posix_spawnattr_t *attr);
    int posix_spawnattr_init(posix_spawnattr_t * attr);

DESCRIPTION

The posix_spawnattr_destroy() function shall destroy a spawn attributes object. A destroyed attr attributes object can be reinitialized using posix_spawnattr_init(); the results of otherwise referencing the object after it has been destroyed are undefined. An implementation may cause posix_spawnattr_destroy() to set the object referenced by attr to an invalid value.

The posix_spawnattr_init() function shall initialize a spawn attributes object attr with the default value for all of the individual attributes used by the implementation. Results are undefined if posix_spawnattr_init() is called specifying an already initialized attr attributes object.

A spawn attributes object is of type posix_spawnattr_t (defined in <spawn.h>) and is used to specify the inheritance of process attributes across a spawn operation. IEEE Std 1003.1-2001 does not define comparison or assignment operators for the type posix_spawnattr_t.

Each implementation shall document the individual attributes it uses their default values unless these values are defined by IEEE Std 1003.1-2001. Attributes not define by IEEE Std 1003.1-2001, their default values, and the names of the associated functions to get and set those attribute values are implementation-defined. ...