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added option_minmemfree for use in asterisk.conf to specify the amount of minimum free memory prior to accepting calls. added CLI 'core show sysinfo' to display system information

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@61539 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Dwayne M. Hubbard
2007-04-11 19:11:32 +00:00
parent 6fc5c73f78
commit 62256ee410
3 changed files with 62 additions and 1 deletions
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19
main/pbx.c
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@@ -37,6 +37,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <time.h>
#include <sys/time.h>
#include <limits.h>
#include <sys/sysinfo.h>
#include "asterisk/lock.h"
#include "asterisk/cli.h"
@@ -2447,11 +2448,14 @@ static int __ast_pbx_run(struct ast_channel *c)
return 0;
}
/* Returns 0 on success, non-zero if call limit was reached */
/* Returns 0 on success, non-zero if a configured limit (maxcalls, maxload, minmemfree) was reached */
static int increase_call_count(const struct ast_channel *c)
{
int failed = 0;
double curloadavg;
long curfreemem;
struct sysinfo sys_info;
ast_mutex_lock(&maxcalllock);
if (option_maxcalls) {
if (countcalls >= option_maxcalls) {
@@ -2466,6 +2470,19 @@ static int increase_call_count(const struct ast_channel *c)
failed = -1;
}
}
if (option_minmemfree) {
if (!sysinfo(&sys_info)) {
/* make sure that the free system memory is above the configured low watermark
* convert the amount of freeram from mem_units to MB */
curfreemem = sys_info.freeram / sys_info.mem_unit;
curfreemem /= 1024*1024;
if (curfreemem < option_minmemfree) {
ast_log(LOG_WARNING, "Available system memory (~%ldMB) is below the configured low watermark (%ldMB)\n", curfreemem, option_minmemfree);
failed = -1;
}
}
}
if (!failed)
countcalls++;
ast_mutex_unlock(&maxcalllock);