pfs_global.h File Reference

#include "my_global.h"
#include "my_compiler.h"

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Macros
#define	PFS_ALIGNED
#define	PFS_MALLOC_ARRAY(n, T, f)   reinterpret_cast<T*> (pfs_malloc((n) * sizeof(T), (f)))
#define	SANITIZE_ARRAY_BODY(T, ARRAY, MAX, UNSAFE)

Functions
void *	pfs_malloc (size_t size, myf flags)
void	pfs_free (void *ptr)
uint	pfs_get_socket_address (char *host, uint host_len, uint *port, const struct sockaddr_storage *src_addr, socklen_t src_len)
uint	randomized_index (const void *ptr, uint max_size)
void	pfs_print_error (const char *format,...)

Variables
bool	pfs_initialized
size_t	pfs_allocated_memory

Detailed Description

Miscellaneous global dependencies (declarations).

Definition in file pfs_global.h.

Macro Definition Documentation

#define PFS_MALLOC_ARRAY	(		n,
			T,
			f
	)		reinterpret_cast<T*> (pfs_malloc((n) * sizeof(T), (f)))

Helper, to allocate an array of structures.

Parameters

n	number of elements in the array.
T	type of an element.
f	flags to use when allocating memory

Definition at line 52 of file pfs_global.h.

#define SANITIZE_ARRAY_BODY	(		T,
			ARRAY,
			MAX,
			UNSAFE
	)

Value:

intptr offset;                                            \
  if ((&ARRAY[0] <= UNSAFE) &&                              \
      (UNSAFE < &ARRAY[MAX]))                               \
  {                                                         \
    offset= ((intptr) UNSAFE - (intptr) ARRAY) % sizeof(T); \
    if (offset == 0)                                        \
      return UNSAFE;                                        \
  }                                                         \
  return NULL

Given an array defined as T ARRAY[MAX], check that an UNSAFE pointer actually points to an element within the array.

Definition at line 126 of file pfs_global.h.

Function Documentation

void pfs_free

(

void *

ptr

)

Free memory allocated with

See Also

pfs_malloc.

Definition at line 89 of file pfs_global.cc.

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uint pfs_get_socket_address	(	char *	host,
		uint	host_len,
		uint *	port,
		const struct sockaddr_storage *	src_addr,
		socklen_t	src_len
	)

Convert raw ip address into readable format. Do not do a reverse DNS lookup.

Definition at line 130 of file pfs_global.cc.

void* pfs_malloc	(	size_t	size,
		myf	flags
	)

Memory allocation for the performance schema. The memory used internally in the performance schema implementation is allocated once during startup, and considered static thereafter.

Definition at line 47 of file pfs_global.cc.

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uint randomized_index ( const void *  ptr, uint  max_size  )

inline

Compute a random index value in an interval.

Parameters

ptr	seed address
max_size	maximun size of the interval

Returns

a random value in [0, max_size-1]

Definition at line 71 of file pfs_global.h.

Variable Documentation

size_t pfs_allocated_memory

Total memory allocated by the performance schema, in bytes.

Definition at line 40 of file pfs_global.cc.

bool pfs_initialized

True when the performance schema is initialized.

Definition at line 39 of file pfs_global.cc.