system.c File Reference

#include "system.h"
#include <sys/stat.h>
#include <string.h>
#include <execinfo.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <pwd.h>
#include <fcntl.h>
#include <sys/mman.h>

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Macros
#define	FMT   "%*s%*s"
#define	MID(LEN, STR)

Functions
size_t	system_total_memory ()
char *	system_home_path ()
const char *	system_env_var (const char *var)
int	system_mmap (void **base, int *fd, const char *file, size_t shm_size, size_t shm_off, int truncate)
off_t	system_file_size (const char *file)
const char *	system_exec_name ()
int	system_process_id ()
int	system_thread_id ()
char *	formatStackLine (const char *bt_sym, int *cwidths, char *dest)
const char *	system_backtrace (unsigned int skip)

Variables
static char	__backtraceStr [32768]

Macro Definition Documentation

FMT

#define FMT   "%*s%*s"

Definition at line 149 of file system.c.

Referenced by system_backtrace().

MID

#define MID	(		LEN,
			STR )

Value:

(int) (LEN / 2 + strlen(STR)), STR, (int) (LEN / 2 - strlen(STR)), " "

Definition at line 150 of file system.c.

Referenced by system_backtrace().

Function Documentation

formatStackLine()

char * formatStackLine	(	const char *	bt_sym,
		int *	cwidths,
		char *	dest )

Definition at line 101 of file system.c.

Referenced by system_backtrace().

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system_backtrace()

const char * system_backtrace

(

unsigned int

skip

)

Get stack backtrace for calling thread. Returned string does not end with a new line.

Note

Do not free or modify returned value

Parameters

skip	Number of functions to skip from trace.0 will show up to the caller.

Returns

formated acktrace

Definition at line 154 of file system.c.

References __backtraceStr, FMT, formatStackLine(), and MID.

Referenced by _arax_assert().

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system_env_var()

const char * system_env_var

(

const char *

var

)

Get value of enviroment variable var. NULL if variable not set.

Note

Do NOT free returned pointer.

Returns

NULL terminated string with enviroment variable value.

Definition at line 32 of file system.c.

Referenced by conf_get(), and utils_config_get_source().

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system_exec_name()

const char * system_exec_name

(

)

Get current executable name

Definition at line 78 of file system.c.

system_file_size()

off_t system_file_size

(

const char *

file

)

Get size of file in bytes.

Returns

File size in bytes, 0 on failure.

Definition at line 68 of file system.c.

Referenced by conf_get(), and system_mmap().

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system_home_path()

char * system_home_path

(

)

Get current users home directory.

Note

Do NOT free returned pointer.

Returns

NULL terminated string with home path.

Definition at line 21 of file system.c.

Referenced by utils_config_alloc_path().

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system_mmap()

int system_mmap	(	void **	base,
		int *	fd,
		const char *	file,
		size_t	shm_size,
		size_t	shm_off,
		int	truncate )

Type to mmap file of size shm_size.

Parameters

base	If succesfull will return mmap location, null otherwise. Initial value is used as a hint.
fd	File descriptor. If succesfull will be positive.Negative on failure.
file	Location of mmap backing file.
shm_size	Size of resulting mmap and file.
shm_off	Skip bytes from the mmap of file.
truncate	Truncate file to shm_size bytes.

Returns

0 on success, check base and fd to figure error.

Definition at line 37 of file system.c.

References fd, and system_file_size().

Referenced by _arax_init().

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system_process_id()

int system_process_id

(

)

Get PID of current process

Definition at line 91 of file system.c.

Referenced by _arax_init(), and arax_exit().

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system_thread_id()

int system_thread_id

(

)

Get thread id of current process thread

Definition at line 96 of file system.c.

system_total_memory()

size_t system_total_memory

(

)

Return total memory in bytes.

Returns

Total memory in bytes.

Definition at line 13 of file system.c.

Referenced by _arax_init().

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Variable Documentation

__backtraceStr

char __backtraceStr[32768]

static

Definition at line 152 of file system.c.

Referenced by system_backtrace().