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/*
* @licence app begin@
* SPDX license identifier: MPL-2.0
*
* Copyright (C) 2011-2015, BMW AG
*
* This file is part of GENIVI Project DLT - Diagnostic Log and Trace.
*
* This Source Code Form is subject to the terms of the
* Mozilla Public License (MPL), v. 2.0.
* If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/.
*
* For further information see http://www.genivi.org/.
* @licence end@
*/
/*!
* \author Sven Hassler <sven_hassler@mentor.com>
*
* \copyright Copyright © 2011-2015 BMW AG. \n
* License MPL-2.0: Mozilla Public License version 2.0 http://mozilla.org/MPL/2.0/.
*
* \file dlt-kpi-common.c
*/
#include "dlt-kpi-common.h"
static int dlt_kpi_cpu_count = -1;
DltReturnValue dlt_kpi_read_file_compact(char *filename, char **target)
{
if ((filename == NULL) || (target == NULL)) {
fprintf(stderr, "%s: Nullpointer parameter!\n", __func__);
return DLT_RETURN_WRONG_PARAMETER;
}
char buffer[BUFFER_SIZE];
int ret = dlt_kpi_read_file(filename, buffer, BUFFER_SIZE);
if (ret < DLT_RETURN_OK)
return ret;
if ((*target = malloc(strlen(buffer) + 1)) == NULL) {
fprintf(stderr, "Out of memory!\n");
return DLT_RETURN_ERROR;
}
memcpy(*target, buffer, strlen(buffer) + 1);
return DLT_RETURN_OK;
}
DltReturnValue dlt_kpi_read_file(char *filename, char *buffer, uint maxLength)
{
if ((filename == NULL) || (buffer == NULL)) {
fprintf(stderr, "%s: Nullpointer parameter!\n", __func__);
return DLT_RETURN_WRONG_PARAMETER;
}
FILE *file = fopen(filename, "r");
if (file == NULL)
/* fprintf(stderr, "Could not read file %s\n", filename); */
return DLT_RETURN_ERROR;
int buflen = fread(buffer, 1, maxLength - 1, file);
buffer[buflen] = '\0';
fclose(file);
return DLT_RETURN_OK;
}
int dlt_kpi_read_cpu_count()
{
char buffer[BUFFER_SIZE];
int ret = dlt_kpi_read_file("/proc/cpuinfo", buffer, sizeof(buffer));
if (ret != 0) {
fprintf(stderr, "dlt_kpi_get_cpu_count(): Could not read /proc/cpuinfo\n");
return -1;
}
char *delim = "[] \t\n";
char *tok = strtok(buffer, delim);
if (tok == NULL) {
fprintf(stderr, "dlt_kpi_get_cpu_count(): Could not extract token\n");
return -1;
}
int num = 0;
do {
if (strcmp(tok, "processor") == 0)
num++;
tok = strtok(NULL, delim);
} while (tok != NULL);
return num;
}
int dlt_kpi_get_cpu_count()
{
if (dlt_kpi_cpu_count <= 0) {
dlt_kpi_cpu_count = dlt_kpi_read_cpu_count();
if (dlt_kpi_cpu_count <= 0) {
fprintf(stderr, "Could not get CPU count\n");
dlt_kpi_cpu_count = -1;
}
}
return dlt_kpi_cpu_count;
}
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