POSIX_THREADS_EXT

POSIX Threads Extensions option group. More...

Macros
#define	PTHREAD_MUTEX_DEFAULT   3
	Default mutex type; behaviour on deadlock/unlock-by-non-owner is undefined.
#define	PTHREAD_MUTEX_ERRORCHECK   2
	Mutex that returns an error on deadlock or unlock by a non-owner.
#define	PTHREAD_MUTEX_NORMAL   0
	Non-recursive mutex with no error checks (fastest).
#define	PTHREAD_MUTEX_RECURSIVE   1
	Recursive mutex; the owning thread may lock it multiple times.

Functions
int	pthread_attr_getguardsize (const pthread_attr_t *ZRESTRICT attr, size_t *ZRESTRICT guardsize)
	Get the guard size attribute of a thread attributes object.
int	pthread_attr_setguardsize (pthread_attr_t *attr, size_t guardsize)
	Set the guard size attribute of a thread attributes object.
int	pthread_mutexattr_gettype (const pthread_mutexattr_t *ZRESTRICT attr, int *ZRESTRICT type)
	Get the type attribute of a mutex attributes object.
int	pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type)
	Set the type attribute of a mutex attributes object.

Detailed Description

POSIX Threads Extensions option group.

Macro Definition Documentation

PTHREAD_MUTEX_DEFAULT

#define PTHREAD_MUTEX_DEFAULT   3

Default mutex type; behaviour on deadlock/unlock-by-non-owner is undefined.

Definition at line 58 of file pthread.h.

PTHREAD_MUTEX_ERRORCHECK

#define PTHREAD_MUTEX_ERRORCHECK   2

Mutex that returns an error on deadlock or unlock by a non-owner.

Definition at line 60 of file pthread.h.

PTHREAD_MUTEX_NORMAL

#define PTHREAD_MUTEX_NORMAL   0

Non-recursive mutex with no error checks (fastest).

Definition at line 62 of file pthread.h.

PTHREAD_MUTEX_RECURSIVE

#define PTHREAD_MUTEX_RECURSIVE   1

Recursive mutex; the owning thread may lock it multiple times.

Definition at line 64 of file pthread.h.

Function Documentation

pthread_attr_getguardsize()

int pthread_attr_getguardsize	(	const pthread_attr_t *ZRESTRICT	attr,
		size_t *ZRESTRICT	guardsize
	)

Get the guard size attribute of a thread attributes object.

Parameters

attr	Thread attributes object.
guardsize	Output: guard size in bytes.

Returns

0 on success, or a positive error number on failure.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getguardsize.html

pthread_attr_setguardsize()

int pthread_attr_setguardsize	(	pthread_attr_t *	attr,
		size_t	guardsize
	)

Set the guard size attribute of a thread attributes object.

Parameters

attr	Thread attributes object.
guardsize	Guard size in bytes.

Returns

0 on success, or a positive error number on failure.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_setguardsize.html

pthread_mutexattr_gettype()

int pthread_mutexattr_gettype	(	const pthread_mutexattr_t *ZRESTRICT	attr,
		int *ZRESTRICT	type
	)

Get the type attribute of a mutex attributes object.

Parameters

attr	Mutex attributes object.
type	Output: PTHREAD_MUTEX_NORMAL, PTHREAD_MUTEX_ERRORCHECK, PTHREAD_MUTEX_RECURSIVE, or PTHREAD_MUTEX_DEFAULT.

Returns

0 on success, or a positive error number on failure.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutexattr_gettype.html

pthread_mutexattr_settype()

int pthread_mutexattr_settype	(	pthread_mutexattr_t *	attr,
		int	type
	)

Set the type attribute of a mutex attributes object.

Parameters

attr	Mutex attributes object.
type	PTHREAD_MUTEX_NORMAL, PTHREAD_MUTEX_ERRORCHECK, PTHREAD_MUTEX_RECURSIVE, or PTHREAD_MUTEX_DEFAULT.

Returns

0 on success, or a positive error number on failure.

See also

https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutexattr_settype.html