diff options
Diffstat (limited to 'plugin_loadavg.c')
| -rw-r--r-- | plugin_loadavg.c | 138 |
1 files changed, 73 insertions, 65 deletions
diff --git a/plugin_loadavg.c b/plugin_loadavg.c index e599c68..bdb3091 100644 --- a/plugin_loadavg.c +++ b/plugin_loadavg.c @@ -1,4 +1,4 @@ -/* $Id: plugin_loadavg.c,v 1.9 2005/01/18 06:30:23 reinelt Exp $ +/* $Id: plugin_loadavg.c,v 1.10 2005/05/08 04:32:44 reinelt Exp $ * * plugin for load average * @@ -23,6 +23,9 @@ * * * $Log: plugin_loadavg.c,v $ + * Revision 1.10 2005/05/08 04:32:44 reinelt + * CodingStyle added and applied + * * Revision 1.9 2005/01/18 06:30:23 reinelt * added (C) to all copyright statements * @@ -99,86 +102,91 @@ #ifndef HAVE_GETLOADAVG static int fd = -2; -int getloadavg (double loadavg[], int nelem) +int getloadavg(double loadavg[], int nelem) { - char buf[65], *p; - ssize_t nread; - int i; - - if (fd == -2) fd = open ("/proc/loadavg", O_RDONLY); - if (fd < 0) return -1; - - lseek(fd,0,SEEK_SET); - nread = read (fd, buf, sizeof buf - 1); - - if (nread < 0) return -1; - buf[nread - 1] = '\0'; - - if (nelem > 3) nelem = 3; - p = buf; - for (i = 0; i < nelem; ++i) { - char *endp; - loadavg[i] = strtod (p, &endp); - if (endp == NULL || endp == p) - /* This should not happen. The format of /proc/loadavg - must have changed. Don't return with what we have, - signal an error. */ - return -1; - p = endp; - } - - return i; + char buf[65], *p; + ssize_t nread; + int i; + + if (fd == -2) + fd = open("/proc/loadavg", O_RDONLY); + if (fd < 0) + return -1; + + lseek(fd, 0, SEEK_SET); + nread = read(fd, buf, sizeof buf - 1); + + if (nread < 0) + return -1; + buf[nread - 1] = '\0'; + + if (nelem > 3) + nelem = 3; + p = buf; + for (i = 0; i < nelem; ++i) { + char *endp; + loadavg[i] = strtod(p, &endp); + if (endp == NULL || endp == p) + /* This should not happen. The format of /proc/loadavg + must have changed. Don't return with what we have, + signal an error. */ + return -1; + p = endp; + } + + return i; } #endif -static void my_loadavg (RESULT *result, RESULT *arg1) +static void my_loadavg(RESULT * result, RESULT * arg1) { - static int nelem=-1; - int index,age; - static double loadavg[3]; - static struct timeval last_value; - struct timeval now; - - gettimeofday(&now,NULL); - - age = (now.tv_sec - last_value.tv_sec)*1000 + (now.tv_usec - last_value.tv_usec)/1000; - /* reread every 10 msec only */ - if (nelem==-1 || age==0 || age>10) { - - nelem=getloadavg(loadavg, 3); - if (nelem<0) { - error ("getloadavg() failed!"); - SetResult(&result, R_STRING, ""); - return; + static int nelem = -1; + int index, age; + static double loadavg[3]; + static struct timeval last_value; + struct timeval now; + + gettimeofday(&now, NULL); + + age = (now.tv_sec - last_value.tv_sec) * 1000 + (now.tv_usec - last_value.tv_usec) / 1000; + /* reread every 10 msec only */ + if (nelem == -1 || age == 0 || age > 10) { + + nelem = getloadavg(loadavg, 3); + if (nelem < 0) { + error("getloadavg() failed!"); + SetResult(&result, R_STRING, ""); + return; + } + last_value = now; } - last_value=now; - } - index=R2N(arg1); - if (index<1 || index>nelem) { - error ("loadavg(%d): index out of range!", index); - SetResult(&result, R_STRING, ""); + index = R2N(arg1); + if (index < 1 || index > nelem) { + error("loadavg(%d): index out of range!", index); + SetResult(&result, R_STRING, ""); + return; + } + + + SetResult(&result, R_NUMBER, &(loadavg[index - 1])); return; - } - - SetResult(&result, R_NUMBER, &(loadavg[index-1])); - return; - } -int plugin_init_loadavg (void) +int plugin_init_loadavg(void) { - AddFunction ("loadavg", 1, my_loadavg); - return 0; + AddFunction("loadavg", 1, my_loadavg); + return 0; } -void plugin_exit_loadavg(void) +void plugin_exit_loadavg(void) { -#ifndef HAVE_GETLOADAVG - if (fd>0) close(fd); - fd=-2; +#ifndef HAVE_GETLOADAVG + if (fd > 0) + close(fd); + fd = -2; #endif } |