Mutex Attributes

This group is for Mutex Attributes. Mutex attributes are used to specify mutex behavior that is different from the default. More...

Typedefs
typedef struct ABT_mutex_attr_opaque *	ABT_mutex_attr
	Mutex attribute handle type. More...

Functions
int	ABT_mutex_attr_create (ABT_mutex_attr *newattr)
	Create a new mutex attribute. More...
int	ABT_mutex_attr_free (ABT_mutex_attr *attr)
	Free a mutex attribute. More...
int	ABT_mutex_attr_set_recursive (ABT_mutex_attr attr, ABT_bool recursive)
	Set a recursive property in a mutex attribute. More...
int	ABT_mutex_attr_get_recursive (ABT_mutex_attr attr, ABT_bool *recursive)
	Get a recursive property in a mutex attribute. More...

Detailed Description

This group is for Mutex Attributes. Mutex attributes are used to specify mutex behavior that is different from the default.

Typedef Documentation

ABT_mutex_attr

typedef struct ABT_mutex_attr_opaque* ABT_mutex_attr

Mutex attribute handle type.

A NULL handle of this type is ABT_MUTEX_ATTR_NULL.

Definition at line 994 of file abt.h.

Function Documentation

ABT_mutex_attr_create()

int ABT_mutex_attr_create

(

ABT_mutex_attr *

newattr

)

Create a new mutex attribute.

ABT_mutex_attr_create() creates a new mutex attribute with default attribute values and returns its handle through newattr.

The default parameters are as follows:

• Not recursive.

newattr must be freed by ABT_mutex_attr_free() after its use.

Execution context

This routine can be called in any execution context. Argobots must be initialized. This routine does not switch the context of the calling ULT unless any user-defined function that is involved in this routine switch the context of the calling ULT.

Errors

ABT_SUCCESS is returned if this routine succeeds.
ABT_ERR_MEM is returned if memory allocation fails.
ABT_ERR_SYS is returned if an error related to system calls and standard libraries occurs.

Undefined behavior

If Argobots is not initialized, the results are undefined.
If newattr is NULL, the results are undefined.

Parameters

[out]

newattr

mutex attribute handle

Returns

Error code

Definition at line 39 of file mutex_attr.c.

ABT_mutex_attr_free()

int ABT_mutex_attr_free

(

ABT_mutex_attr *

attr

)

Free a mutex attribute.

ABT_mutex_attr_free() deallocates the resource used for the mutex attribute attr and sets attr to ABT_MUTEX_ATTR_NULL.

Execution context

This routine can be called in any execution context. Argobots must be initialized. This routine does not switch the context of the calling ULT unless any user-defined function that is involved in this routine switch the context of the calling ULT.

Errors

ABT_SUCCESS is returned if this routine succeeds.
ABT_ERR_INV_MUTEX_ATTR is returned if attr points to ABT_MUTEX_ATTR_NULL.

Undefined behavior

If Argobots is not initialized, the results are undefined.
If attr is NULL, the results are undefined.
If attr is accessed after calling this routine, the results are undefined.

Parameters

[in,out]

attr

mutex attribute handle

Returns

Error code

Definition at line 79 of file mutex_attr.c.

ABT_mutex_attr_get_recursive()

int ABT_mutex_attr_get_recursive	(	ABT_mutex_attr	attr,
		ABT_bool *	recursive
	)

Get a recursive property in a mutex attribute.

ABT_mutex_attr_get_recursive() retrieves the recursive property (i.e., whether the mutex can be locked multiple times by the same owner or not) in the mutex attribute attr. If attr is configured to be recursive, recursive is set to ABT_TRUE. Otherwise, recursive is set to ABT_FALSE.

Execution context

This routine can be called in any execution context. Argobots must be initialized. This routine does not switch the context of the calling ULT unless any user-defined function that is involved in this routine switch the context of the calling ULT.

Errors

ABT_SUCCESS is returned if this routine succeeds.
ABT_ERR_INV_MUTEX_ATTR is returned if attr is ABT_MUTEX_ATTR_NULL.

Undefined behavior

If Argobots is not initialized, the results are undefined.
If recursive is NULL, the results are undefined.

Parameters

[in]	attr	mutex attribute handle
[in]	recursive	flag for a recursive locking support

Returns

Error code

Definition at line 162 of file mutex_attr.c.

ABT_mutex_attr_set_recursive()

int ABT_mutex_attr_set_recursive	(	ABT_mutex_attr	attr,
		ABT_bool	recursive
	)

Set a recursive property in a mutex attribute.

ABT_mutex_attr_set_recursive() sets the recursive property (i.e., whether the mutex can be locked multiple times by the same owner or not) in the mutex attribute attr. If recursive is ABT_TRUE, the recursive flag of attr is set. Otherwise, the recursive flag of attr is unset.

Execution context

This routine can be called in any execution context. Argobots must be initialized. This routine does not switch the context of the calling ULT unless any user-defined function that is involved in this routine switch the context of the calling ULT.

Errors

ABT_SUCCESS is returned if this routine succeeds.
ABT_ERR_INV_MUTEX_ATTR is returned if attr is ABT_MUTEX_ATTR_NULL.

Undefined behavior

If Argobots is not initialized, the results are undefined.
If recursive is neither ABT_TRUE nor ABT_FALSE, the results are undefined.
If attr is accessed concurrently, the results are undefined.

Parameters

[in]	attr	mutex attribute handle
[in]	recursive	flag for a recursive locking support

Returns

Error code

Definition at line 120 of file mutex_attr.c.