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/*
* Copyright (C) 2013-2014 Red Hat, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors: Peter Schiffer <pschiffe@redhat.com>
*/
#include "lscpu.h"
/*
* Initialize LscpuProcessor attributes.
* @param cpu
*/
void init_lscpuprocessor_struct(LscpuProcessor *cpu)
{
cpu->data_width = 0;
cpu->processors = 0;
cpu->cores = 1;
cpu->threads_per_core = 1;
cpu->stepping = NULL;
cpu->current_speed = 0;
}
/*
* Check attributes of cpu structure and fill in defaults if needed.
* @param cpu
* @return 0 if success, negative value otherwise
*/
short check_lscpuprocessor_attributes(LscpuProcessor *cpu)
{
short ret = -1;
if (!cpu->stepping) {
if (!(cpu->stepping = strdup(""))) {
goto done;
}
}
ret = 0;
done:
if (ret != 0) {
lmi_warn("Failed to allocate memory.");
}
return ret;
}
short lscpu_get_processor(LscpuProcessor *cpu)
{
short ret = -1;
unsigned i, buffer_size = 0;
char **buffer = NULL, *buf;
/* get lscpu output */
if (run_command("lscpu", &buffer, &buffer_size) != 0) {
goto done;
}
init_lscpuprocessor_struct(cpu);
/* parse information about processor */
for (i = 0; i < buffer_size; i++) {
/* Data Width */
buf = copy_string_part_after_delim(buffer[i], "CPU op-mode(s):");
if (buf) {
if (strstr(buf, "64")) {
cpu->data_width = 64;
} else if (strstr(buf, "32")) {
cpu->data_width = 32;
}
free(buf);
buf = NULL;
continue;
}
/* Threads per core */
buf = copy_string_part_after_delim(buffer[i], "Thread(s) per core:");
if (buf) {
sscanf(buf, "%u", &cpu->threads_per_core);
free(buf);
buf = NULL;
continue;
}
/* Cores per processor */
buf = copy_string_part_after_delim(buffer[i], "Core(s) per socket:");
if (buf) {
sscanf(buf, "%u", &cpu->cores);
free(buf);
buf = NULL;
continue;
}
/* Number of processors */
buf = copy_string_part_after_delim(buffer[i], "Socket(s):");
if (buf) {
sscanf(buf, "%u", &cpu->processors);
free(buf);
buf = NULL;
continue;
}
/* Stepping */
buf = copy_string_part_after_delim(buffer[i], "Stepping:");
if (buf) {
cpu->stepping = buf;
buf = NULL;
continue;
}
/* Current speed in MHz */
buf = copy_string_part_after_delim(buffer[i], "CPU MHz:");
if (buf) {
sscanf(buf, "%u", &cpu->current_speed);
free(buf);
buf = NULL;
continue;
}
}
if (check_lscpuprocessor_attributes(cpu) != 0) {
goto done;
}
ret = 0;
done:
free_2d_buffer(&buffer, &buffer_size);
if (ret != 0) {
lscpu_free_processor(cpu);
}
return ret;
}
void lscpu_free_processor(LscpuProcessor *cpus)
{
if (!cpus) {
return;
}
free(cpus->stepping);
cpus->stepping = NULL;
}
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