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Destroy a spawn attributes object
#include <spawn.h> int posix_spawnattr_destroy( posix_spawnattr_t *attrp);
libc
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.
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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. |
Safety: | |
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Cancellation point | No |
Interrupt handler | Yes |
Signal handler | Yes |
Thread | Yes |
posix_spawn(), posix_spawn_file_actions_addclose(), posix_spawn_file_actions_adddup2(), posix_spawn_file_actions_destroy(), posix_spawn_file_actions_init(), posix_spawnattr_addpartid(), posix_spawnattr_addpartition(), posix_spawnattr_getcred(), posix_spawnattr_getflags(), posix_spawnattr_getnode(), posix_spawnattr_getpartid(), posix_spawnattr_getpgroup(), posix_spawnattr_getrunmask(), posix_spawnattr_getschedparam(), posix_spawnattr_getschedpolicy(), posix_spawnattr_getsigdefault(), posix_spawnattr_getsigignore(), posix_spawnattr_getsigmask(), posix_spawnattr_getstackmax(), posix_spawnattr_getxflags(), posix_spawnattr_init(), posix_spawnattr_setcred(), posix_spawnattr_setflags(), posix_spawnattr_setnode(), posix_spawnattr_setpgroup(), posix_spawnattr_setrunmask(), posix_spawnattr_setschedparam(), posix_spawnattr_setschedpolicy(), posix_spawnattr_setsigdefault(), posix_spawnattr_setsigignore(), posix_spawnattr_setsigmask(), posix_spawnattr_setstackmax(), posix_spawnattr_setxflags(), posix_spawnp()
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