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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <proccpuinfo.h>
#include "cleanbench.h"
#define BUF_SIZ 1024
/******************
** removeNewLine **
*******************
** Removes a trailing newline character if present
*/
static void removeNewLine(char * s) {
int len = strlen(s);
if(len > 0 && s[len - 1] == '\n') {
s[len - 1] = '\0';
}
}
/***************
** runCommand **
****************
** Run the system command through a pipe
** The pointer result must point to a pre-allocated array of at least BUF_SIZ
*/
static void runCommand (const char *command, char *result) {
FILE * pipe;
pipe = popen(command, "r");
if(pipe == NULL) {
/* command failed */
result[0] = '\0';
} else {
if(NULL == fgets(result, BUF_SIZ, pipe)) {
/* command failed */
result[0] = '\0';
}
pclose(pipe);
}
removeNewLine(result);
}
/********************
** readProcCpuInfo **
*********************
** Reads and parses /proc/cpuinfo on a Linux system
** The pointers must point to pre-allocated arrays of at least BUF_SIZ
*/
static void readProcCpuInfo (char *model, char *cache) {
char format[32];
proccpuinfo *info = proccpuinfo_read();
if (!info) {
return;
}
switch (info->cpus) {
case 1:
strcpy(format, "%s %s %.0fMHz");
break;
case 2:
strcpy(format, "Dual %s %s %.0fMHz");
break;
default:
strcpy(format, "%d CPUs %s %s %.0fMHz");
break;
}
snprintf(model, BUF_SIZ, format, info->hardware_platform, info->architecture, info->frequency);
snprintf(cache, BUF_SIZ, "%u KB", info->cache);
proccpuinfo_free(info);
}
/*************
** hardware **
**************
** Runs the system command "uname -s -r"
** Reads /proc/cpuinfo if on a linux system
** Writes output
*/
void hardware(void) {
char os[BUF_SIZ];
char model[BUF_SIZ];
char cache[BUF_SIZ];
const char os_command[] = "uname -s -r";
#ifdef NO_UNAME
os[0] = '\0';
#else
runCommand(os_command, os);
#endif
if(NULL != strstr(os, "Linux")) {
readProcCpuInfo (model, cache);
} else {
model[0] = '\0';
cache[0] = '\0';
}
printf("CPU : %s\n", model);
printf("L2 Cache : %s\n", cache);
printf("OS : %s\n", os);
}
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