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#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "common.h"
int forks(int argc, char **argv) {
FILE *f;
char buff[256];
if(argc > 1) {
if(!strcmp(argv[1], "config")) {
puts("graph_title Fork rate\n"
"graph_args --base 1000 -l 0 \n"
"graph_vlabel forks / ${graph_period}\n"
"graph_category processes\n"
"graph_info This graph shows the forking rate (new processes started).\n"
"forks.label forks\n"
"forks.type DERIVE\n"
"forks.min 0\n"
"forks.max 100000\n"
"forks.info The number of forks per second.");
return 0;
}
if(!strcmp(argv[1], "autoconf")) {
if(0 == access(PROC_STAT, R_OK))
return writeyes();
else
return writeno(PROC_STAT " not readable");
}
}
if(!(f=fopen(PROC_STAT, "r"))) {
fputs("cannot open " PROC_STAT "\n", stderr);
return 1;
}
while(fgets(buff, 256, f)) {
if(!strncmp(buff, "processes ", 10)) {
fclose(f);
printf("forks.value %s", buff+10);
return 0;
}
}
fclose(f);
fputs("no processes line found in " PROC_STAT "\n", stderr);
return 1;
}
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