Destroy a spawn attributes object
#include <spawn.h> int posix_spawnattr_destroy(posix_spawnattr_t *attrp);
- A pointer to the spawn attributes object that you want to destroy.
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The posix_spawnattr_destroy() function destroys a spawn attributes object. You can reinitialize a destroyed attrp attributes object by using posix_spawnattr_init(); the results of referencing the object after you've destroyed it are undefined.
A spawn attributes object is an opaque object of type posix_spawnattr_t (defined in <spawn.h>), and it specifies the inheritance of process attributes across a spawn operation.
The resulting spawn attributes object (possibly modified by setting individual attribute values), is used to modify the behavior of posix_spawn() or posix_spawnp(). Changes that you make to the spawn attributes object don't affect any processes that you've already spawned.
The posix_spawnattr_destroy() function renders the posix_spawnattr_t unusable. Before you can reuse the object, you must initialize it with posix_spawnattr_init(). POSIX specifies that results are undefined if you use a posix_spawnattr_t object after it has been destroyed, including calling posix_spawnattr_destroy() on an already destroyed object. If you attempt to reference a destroyed attributes object, all of the posix_spawnattr_get*() and posix_spawnattr_set*() operations, as well as posix_spawn(), return EINVAL.
- The value specified by attrp is invalid.
Last modified: 2014-06-24