diff options
Diffstat (limited to 'forks.c')
-rw-r--r-- | forks.c | 44 |
1 files changed, 44 insertions, 0 deletions
@@ -0,0 +1,44 @@ +#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; +} |