diff options
Diffstat (limited to 'lib/os_mon/c_src/cpu_sup.c')
| -rw-r--r-- | lib/os_mon/c_src/cpu_sup.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/lib/os_mon/c_src/cpu_sup.c b/lib/os_mon/c_src/cpu_sup.c index fbf318c614..9c5f9a6aa5 100644 --- a/lib/os_mon/c_src/cpu_sup.c +++ b/lib/os_mon/c_src/cpu_sup.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1997-2009. All Rights Reserved. + * Copyright Ericsson AB 1997-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -191,7 +191,10 @@ int main(int argc, char** argv) { static cpu_t *read_procstat(FILE *fp, cpu_t *cpu) { char buffer[BUFFERSIZE]; - fgets(buffer, BUFFERSIZE, fp); + if (fgets(buffer, BUFFERSIZE, fp) == NULL) { + memset(cpu, 0, sizeof(cpu_t)); + return cpu; + } sscanf(buffer, "cpu%u %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu", &(cpu->id), &(cpu->user), @@ -223,7 +226,11 @@ static void util_measure(unsigned int **result_vec, int *result_sz) { return; } - fgets(buffer, BUFFERSIZE, fp); /*ignore read*/ + /*ignore read*/ + if (fgets(buffer, BUFFERSIZE, fp) == NULL) { + *result_sz = 0; + return; + } rv = *result_vec; rv[0] = no_of_cpus; rv[1] = CU_VALUES; @@ -447,8 +454,12 @@ static void sendv(unsigned int data[], int ints) { } static void error(char* err_msg) { - write(FD_ERR, err_msg, strlen(err_msg)); - write(FD_ERR, "\n", 1); + /* + * if we get error here we have trouble, + * silence unnecessary warnings + */ + if(write(FD_ERR, err_msg, strlen(err_msg))); + if(write(FD_ERR, "\n", 1)); exit(-1); } |