stats.c File Reference

Functions for the sending and receiving of statsitics between ctrl and runtime. More...

#include "stats.h"
#include "logging.h"
#include <stdlib.h>

Go to the source code of this file.

Classes
struct	stat_msg_hdr
	Header for a serialized stats message. More...

Functions
int	is_thread_stat (enum stat_id id)
int	is_msu_stat (enum stat_id id)
static int	init_stat_sample (int max_stats, struct stat_sample *sample)
	Initializes a single stat sample with room to hold max_stats statistics. More...
void	free_stat_samples (struct stat_sample *sample, int n_samples)
	Frees a set of stat samples. More...
struct stat_sample *	init_stat_samples (int max_stats, int n_samples)
	Initilizes n sets of samples of statistics, each of which contains max_stats points. More...
size_t	serialized_stat_sample_size (struct stat_sample *sample, int n_samples)
	Determines the size needed to hold the serialized version of sample. More...
static ssize_t	serialize_stat_sample (struct stat_sample *sample, void *buffer, size_t buff_len)
	Serializes a single stat sample into a buffer of size buff_len. More...
ssize_t	serialize_stat_samples (struct stat_sample *samples, int n_samples, void *buffer, size_t buff_len)
	Serializes from the provided samples into the buffer More...
static ssize_t	deserialize_stat_sample (void *buffer, size_t buff_len, struct stat_sample *sample)
	Deserializes a single stat sample from a buffer. More...
int	deserialize_stat_samples (void *buffer, size_t buff_len, struct stat_sample *samples, int n_samples)
	Deserializes from the provided buffer into the samples structure. More...

Detailed Description

Functions for the sending and receiving of statsitics between ctrl and runtime.

Definition in file stats.c.

Function Documentation

static ssize_t deserialize_stat_sample ( void *  buffer, size_t  buff_len, struct stat_sample *  sample  )

static

Deserializes a single stat sample from a buffer.

Returns

0 on success, -1 on error

Definition at line 153 of file stats.c.

int deserialize_stat_samples	(	void *	buffer,
		size_t	buff_len,
		struct stat_sample *	samples,
		int	n_samples
	)

Deserializes from the provided buffer into the samples structure.

Parameters

buffer	The buffer to deserialize
buff_len	The size of the serialized buffer
samples	The structure into which to deserialize
n_samples	The number of items allocated in samples

Returns

0 on success, -1 on error

Definition at line 176 of file stats.c.

void free_stat_samples	(	struct stat_sample *	sample,
		int	n_samples
	)

Frees a set of stat samples.

Definition at line 71 of file stats.c.

static int init_stat_sample ( int  max_stats, struct stat_sample *  sample  )

static

Initializes a single stat sample with room to hold max_stats statistics.

Definition at line 61 of file stats.c.

struct stat_sample* init_stat_samples	(	int	max_stats,
		int	n_samples
	)

Initilizes n sets of samples of statistics, each of which contains max_stats points.

Returns

allocated structure on success, NULL on error

Definition at line 80 of file stats.c.

int is_msu_stat

(

enum stat_id

id

)

Definition at line 49 of file stats.c.

int is_thread_stat

(

enum stat_id

id

)

Definition at line 40 of file stats.c.

static ssize_t serialize_stat_sample ( struct stat_sample *  sample, void *  buffer, size_t  buff_len  )

static

Serializes a single stat sample into a buffer of size buff_len.

Returns

0 on success, -1 if buffer is not large enough to hold sample

Definition at line 107 of file stats.c.

ssize_t serialize_stat_samples	(	struct stat_sample *	samples,
		int	n_samples,
		void *	buffer,
		size_t	buff_len
	)

Serializes from the provided samples into the buffer

Parameters

samples	The samples to deserialize
n_samples	size of samples
buffer	The buffer into which to serialize
buff_len	The size of the allocated buffer

Returns

0 on success, -1 on error (if buffer is too small)

Definition at line 122 of file stats.c.

size_t serialized_stat_sample_size	(	struct stat_sample *	sample,
		int	n_samples
	)

Determines the size needed to hold the serialized version of sample.

Parameters

sample	The sample to serialize
n_samples	The number of elements in sample

Returns

size needed

Definition at line 96 of file stats.c.