Mon Jun 27 16:51:15 2011

Asterisk developer's documentation


func_sysinfo.c File Reference

#include "asterisk.h"
#include <sys/sysinfo.h>
#include "asterisk/module.h"
#include "asterisk/pbx.h"

Go to the source code of this file.

Functions

static void __reg_module (void)
static void __unreg_module (void)
static int load_module (void)
static int sysinfo_helper (struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
static int unload_module (void)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "System information related functions" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, }
static struct ast_module_infoast_module_info = &__mod_info
static struct ast_custom_function sysinfo_function


Detailed Description

SYSINFO function to return various system data.

Note:
Inspiration and Guidance from Russell
Author:
Jeff Peeler

Definition in file func_sysinfo.c.


Function Documentation

static void __reg_module ( void   )  [static]

Definition at line 151 of file func_sysinfo.c.

static void __unreg_module ( void   )  [static]

Definition at line 151 of file func_sysinfo.c.

static int load_module ( void   )  [static]

Definition at line 146 of file func_sysinfo.c.

References ast_custom_function_register, and sysinfo_function.

00147 {
00148    return ast_custom_function_register(&sysinfo_function);
00149 }

static int sysinfo_helper ( struct ast_channel chan,
const char *  cmd,
char *  data,
char *  buf,
size_t  len 
) [static]

Definition at line 90 of file func_sysinfo.c.

References ast_active_calls(), ast_log(), ast_strlen_zero(), getloadavg(), LOG_ERROR, and LOG_WARNING.

00092 {
00093 #if defined(HAVE_SYSINFO)
00094    struct sysinfo sys_info;
00095    if (sysinfo(&sys_info)) {
00096       ast_log(LOG_ERROR, "FAILED to retrieve system information\n");
00097       return -1;
00098    }
00099 #endif
00100    if (ast_strlen_zero(data)) {
00101       ast_log(LOG_WARNING, "Syntax: ${SYSINFO(<parameter>)} - missing argument!)\n");
00102       return -1;
00103    } else if (!strcasecmp("loadavg", data)) {
00104       double curloadavg;
00105       getloadavg(&curloadavg, 1);
00106       snprintf(buf, len, "%f", curloadavg);
00107    } else if (!strcasecmp("numcalls", data)) {
00108       snprintf(buf, len, "%d", ast_active_calls());
00109    }
00110 #if defined(HAVE_SYSINFO)
00111    else if (!strcasecmp("uptime", data)) {             /* in hours */
00112       snprintf(buf, len, "%ld", sys_info.uptime/3600);
00113    } else if (!strcasecmp("totalram", data)) {         /* in KiB */
00114       snprintf(buf, len, "%ld",(sys_info.totalram * sys_info.mem_unit)/1024);
00115    } else if (!strcasecmp("freeram", data)) {          /* in KiB */
00116       snprintf(buf, len, "%ld",(sys_info.freeram * sys_info.mem_unit)/1024);
00117    } else if (!strcasecmp("bufferram", data)) {        /* in KiB */
00118       snprintf(buf, len, "%ld",(sys_info.bufferram * sys_info.mem_unit)/1024);
00119    } else if (!strcasecmp("totalswap", data)) {        /* in KiB */
00120       snprintf(buf, len, "%ld",(sys_info.totalswap * sys_info.mem_unit)/1024);
00121    } else if (!strcasecmp("freeswap", data)) {         /* in KiB */
00122       snprintf(buf, len, "%ld",(sys_info.freeswap * sys_info.mem_unit)/1024);
00123    } else if (!strcasecmp("numprocs", data)) {
00124       snprintf(buf, len, "%d", sys_info.procs);
00125    }
00126 #endif
00127    else {
00128       ast_log(LOG_ERROR, "Unknown sysinfo parameter type '%s'.\n", data);
00129       return -1;
00130    }
00131       
00132    return 0;
00133 }

static int unload_module ( void   )  [static]

Definition at line 141 of file func_sysinfo.c.

References ast_custom_function_unregister(), and sysinfo_function.

00142 {
00143    return ast_custom_function_unregister(&sysinfo_function);
00144 }


Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "System information related functions" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 151 of file func_sysinfo.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 151 of file func_sysinfo.c.

struct ast_custom_function sysinfo_function [static]

Initial value:

 {
   .name = "SYSINFO",
   .read = sysinfo_helper,
   .read_max = 22,
}

Definition at line 135 of file func_sysinfo.c.

Referenced by load_module(), and unload_module().


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