Multi-Threaded Adtomic Operations Routines

Collaboration diagram for Multi-Threaded Adtomic Operations Routines:

Typedefs
typedef uint32_t	switch_atomic_t

Functions
switch_status_t	switch_atomic_init (switch_memory_pool_t *pool)
uint32_t	switch_atomic_read (volatile switch_atomic_t *mem)
void	switch_atomic_set (volatile switch_atomic_t *mem, uint32_t val)
void	switch_atomic_add (volatile switch_atomic_t *mem, uint32_t val)
void	switch_atomic_inc (volatile switch_atomic_t *mem)
int	switch_atomic_dec (volatile switch_atomic_t *mem)

Detailed Description

Typedef Documentation

typedef uint32_t switch_atomic_t

Opaque type used for the atomic operations

Definition at line 380 of file switch_apr.h.

Function Documentation

void switch_atomic_add	(	volatile switch_atomic_t *	mem,
		uint32_t	val
	)

Uses an atomic operation to add the uint32 value to the value at the specified location of memory.

Parameters

mem	The location of the value to add to.
val	The uint32 value to add to the value at the memory location.

Definition at line 1289 of file switch_apr.c.

{
#ifdef apr_atomic_t
        apr_atomic_add((apr_atomic_t *)mem, val);
#else
        apr_atomic_add32((apr_uint32_t *)mem, val);
#endif
}

int switch_atomic_dec

(

volatile switch_atomic_t *

mem

)

Uses an atomic operation to decrement the value at the specified memroy location.

Parameters

mem	The location of the value to decrement.

Definition at line 1307 of file switch_apr.c.

{
#ifdef apr_atomic_t
        return apr_atomic_dec((apr_atomic_t *)mem);
#else
        return apr_atomic_dec32((apr_uint32_t *)mem);
#endif
}

void switch_atomic_inc

(

volatile switch_atomic_t *

mem

)

Uses an atomic operation to increment the value at the specified memroy location.

Parameters

mem	The location of the value to increment.

Definition at line 1298 of file switch_apr.c.

{
#ifdef apr_atomic_t
        apr_atomic_inc((apr_atomic_t *)mem);
#else
        apr_atomic_inc32((apr_uint32_t *)mem);
#endif
}

switch_status_t switch_atomic_init

(

switch_memory_pool_t *

pool

)

Some architectures require atomic operations internal structures to be initialized before use.

Parameters

pool	The memory pool to use when initializing the structures.

Definition at line 1266 of file switch_apr.c.

{
        return apr_atomic_init((apr_pool_t *) pool);
}

uint32_t switch_atomic_read

(

volatile switch_atomic_t *

mem

)

Uses an atomic operation to read the uint32 value at the location specified by mem.

Parameters

mem	The location of memory which stores the value to read.

Definition at line 1271 of file switch_apr.c.

Referenced by switch_xml_config_parse_event().

{
#ifdef apr_atomic_t
        return apr_atomic_read((apr_atomic_t *)mem);
#else
        return apr_atomic_read32((apr_uint32_t *)mem);
#endif
}

void switch_atomic_set	(	volatile switch_atomic_t *	mem,
		uint32_t	val
	)

Uses an atomic operation to set a uint32 value at a specified location of memory.

Parameters

mem	The location of memory to set.
val	The uint32 value to set at the memory location.

Definition at line 1280 of file switch_apr.c.

Referenced by switch_xml_config_parse_event().

{
#ifdef apr_atomic_t
        apr_atomic_set((apr_atomic_t *)mem, val);
#else
        apr_atomic_set32((apr_uint32_t *)mem, val);
#endif
}