pfs_global.cc File Reference

Miscellaneous global dependencies (implementation). More...

#include "storage/perfschema/pfs_global.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "my_inttypes.h"
#include "my_sys.h"
#include "sql/log.h"
#include "storage/perfschema/pfs_builtin_memory.h"
#include <unistd.h>
#include <arpa/inet.h>
#include <netinet/in.h>

Functions
void *	pfs_malloc (PFS_builtin_memory_class *klass, size_t size, myf flags)
	Memory allocation for the performance schema. More...
void	pfs_free (PFS_builtin_memory_class *klass, size_t size, void *ptr)
	Free memory allocated with. More...
void *	pfs_malloc_array (PFS_builtin_memory_class *klass, size_t n, size_t size, myf flags)
	Array allocation for the performance schema. More...
void	pfs_free_array (PFS_builtin_memory_class *klass, size_t n, size_t size, void *ptr)
	Free array allocated by. More...
bool	is_overflow (size_t product, size_t n1, size_t n2)
	Detect multiplication overflow. More...
void	pfs_print_error (const char *format,...)
uint	pfs_get_socket_address (char *host, uint host_len, uint *port, const struct sockaddr_storage *src_addr, socklen_t)
	Convert raw ip address into readable format. More...

Variables
bool	pfs_initialized = false
	True when the performance schema is initialized. More...

Detailed Description

Miscellaneous global dependencies (implementation).

Function Documentation

is_overflow()

bool is_overflow	(	size_t	product,
		size_t	n1,
		size_t	n2
	)

Detect multiplication overflow.

Parameters

product	multiplication product
n1	operand
n2	operand

Returns

true if multiplication caused an overflow.

pfs_free()

void pfs_free	(	PFS_builtin_memory_class *	klass,
		size_t	size,
		void *	ptr
	)

Free memory allocated with.

See also

pfs_malloc.

pfs_free_array()

void pfs_free_array	(	PFS_builtin_memory_class *	klass,
		size_t	n,
		size_t	size,
		void *	ptr
	)

Free array allocated by.

Free memory allocated with.

See also

pfs_malloc_array.

Parameters

klass	performance schema memory class
n	number of array elements
size	element size
ptr	pointer to memory

pfs_get_socket_address()

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.

pfs_malloc()

void * pfs_malloc	(	PFS_builtin_memory_class *	klass,
		size_t	size,
		myf	flags
	)

Memory allocation for the performance schema.

The memory used internally in the performance schema implementation. It is allocated at startup, or during runtime with scalable buffers.

pfs_malloc_array()

void * pfs_malloc_array	(	PFS_builtin_memory_class *	klass,
		size_t	n,
		size_t	size,
		myf	flags
	)

Array allocation for the performance schema.

Allocate an array of structures with overflow check.

Checks for overflow of n * size before allocating.

Parameters

klass	performance schema memory class
n	number of array elements
size	element size
flags	malloc flags

Returns

pointer to memory on success, else nullptr

pfs_print_error()

void pfs_print_error	(	const char *	format,
			...
	)

Variable Documentation

pfs_initialized

bool pfs_initialized = false

True when the performance schema is initialized.