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libcpuid/cpuid_tool/cpuid_tool.c

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/*
* Copyright 2008 Veselin Georgiev,
* anrieffNOSPAM @ mgail_DOT.com (convert to gmail)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @File cpuid_tool.c
* @Date 2008-11-19
* @Author Veselin Georgiev
* @Brief Command line interface to libcpuid
*
* This file is provides a direct interface to libcpuid. See the usage()
* function (or just run the program with the `--help' switch) for a short
* command line options reference.
*
* This file has several purposes:
*
* 1) When started with no arguments, the program outputs the RAW and decoded
* CPU data to files (`raw.txt' and `report.txt', respectively) - this is
* intended to be a dumb, doubleclicky tool for non-developer
* users, that can provide debug info about unrecognized processors to
* libcpuid developers.
* 2) When operated from the terminal with the `--report' option, it is a
* generic CPU-info utility.
* 3) Can be used in shell scripts, e.g. to get the name of the CPU, cache
* sizes, features, with query options like `--cache', `--brandstr', etc.
* 4) Finally, it serves to self-document libcpiud itself :)
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "libcpuid.h"
/* Globals: */
char raw_data_file[256] = "";
char out_file[256] = "";
typedef enum {
NEED_CPUID_PRESENT,
NEED_VENDOR_STR,
NEED_VENDOR_ID,
NEED_BRAND_STRING,
NEED_FAMILY,
NEED_MODEL,
NEED_STEPPING,
NEED_EXT_FAMILY,
NEED_EXT_MODEL,
NEED_NUM_CORES,
NEED_NUM_LOGICAL,
NEED_TOTAL_CPUS,
NEED_L1D_SIZE,
NEED_L1I_SIZE,
NEED_L2_SIZE,
NEED_L3_SIZE,
NEED_L1D_ASSOC,
NEED_L2_ASSOC,
NEED_L3_ASSOC,
NEED_L1D_CACHELINE,
NEED_L2_CACHELINE,
NEED_L3_CACHELINE,
NEED_CODENAME,
NEED_FEATURES,
NEED_CLOCK,
NEED_CLOCK_RDTSC,
} output_data_switch;
int need_input = 0,
need_output = 0,
need_quiet = 0,
need_report = 0,
need_clockreport = 0,
need_timed_clockreport = 0,
need_verbose = 0,
need_version = 0;
#define MAX_REQUESTS 32
int num_requests = 0;
output_data_switch requests[MAX_REQUESTS];
FILE *fout;
const struct { output_data_switch sw; const char* synopsis; int ident_required; }
matchtable[] = {
{ NEED_CPUID_PRESENT, "--cpuid" , 0},
{ NEED_VENDOR_STR , "--vendorstr" , 1},
{ NEED_VENDOR_ID , "--vendorid" , 1},
{ NEED_BRAND_STRING , "--brandstr" , 1},
{ NEED_FAMILY , "--family" , 1},
{ NEED_MODEL , "--model" , 1},
{ NEED_STEPPING , "--stepping" , 1},
{ NEED_EXT_FAMILY , "--extfamily" , 1},
{ NEED_EXT_MODEL , "--extmodel" , 1},
{ NEED_NUM_CORES , "--cores" , 1},
{ NEED_NUM_LOGICAL , "--logical" , 1},
{ NEED_TOTAL_CPUS , "--total-cpus" , 1},
{ NEED_L1D_SIZE , "--l1d-cache" , 1},
{ NEED_L1I_SIZE , "--l1i-cache" , 1},
{ NEED_L2_SIZE , "--cache" , 1},
{ NEED_L2_SIZE , "--l2-cache" , 1},
{ NEED_L3_SIZE , "--l3-cache" , 1},
{ NEED_L1D_ASSOC , "--l1d-assoc" , 1},
{ NEED_L2_ASSOC , "--l2-assoc" , 1},
{ NEED_L3_ASSOC , "--l3-assoc" , 1},
{ NEED_L1D_CACHELINE, "--l1d-cacheline", 1},
{ NEED_L2_CACHELINE , "--l2-cacheline" , 1},
{ NEED_L3_CACHELINE , "--l3-cacheline" , 1},
{ NEED_CODENAME , "--codename" , 1},
{ NEED_FEATURES , "--flags" , 1},
{ NEED_CLOCK , "--clock" , 0},
{ NEED_CLOCK_RDTSC , "--clock-rdtsc" , 1},
};
const int sz_match = (sizeof(matchtable) / sizeof(matchtable[0]));
/* functions */
static void usage(void)
{
printf("Usage: cpuid_tool [options]\n\n");
printf("Options:\n");
printf(" -h,--help - Show this help\n");
printf(" --load=<file> - Load RAW CPUID data from file\n");
printf(" --save=<file> - Aquire RAW CPUID data and write it to file\n");
printf(" --report,--all - Report all decoded CPU info (w/o clock)\n");
printf(" --clock - in conjunction to --report: print CPU clock as well\n");
printf(" --clock-rdtsc - same as --clock, but use RDTSC for clock detection\n");
printf(" --quiet - disable warnings\n");
printf(" --outfile=<file> - redirect all output to this file, instead of stdout\n");
printf(" --verbose - be extra verbose\n");
printf(" --version - print library version\n");
printf("\n");
printf("Query switches (generate 1 line of ouput per switch; in order of appearance):");
int line_fill = 80, l, i;
for (i = 0; i < sz_match; i++) {
l = (int) strlen(matchtable[i].synopsis);
if (line_fill + l > 76) {
line_fill = 2;
printf("\n ");
}
printf("%s", matchtable[i].synopsis);
if (i < sz_match - 1) {
line_fill += l + 2;
printf(", ");
}
}
printf("\n\n");
printf("If `-' is used for <file>, then stdin/stdout will be used instead of files.\n");
printf("When no options are present, the program behaves as if it was invoked with\n");
printf(" cpuid_tool \"--save=raw.txt --outfile=report.txt --report --verbose\"\n");
}
static int parse_cmdline(int argc, char** argv)
{
#define xerror(msg)\
fprintf(stderr, "Error: %s\n\n", msg); \
fprintf(stderr, "Use -h to get a list of supported options\n"); \
return -1;
if (argc == 1) {
/* Default command line options */
need_output = 1;
strcpy(raw_data_file, "raw.txt");
strcpy(out_file, "report.txt");
need_report = 1;
need_verbose = 1;
return 1;
}
int i, j, recog;
for (i = 1; i < argc; i++) {
char *arg = argv[i];
recog = 0;
if (!strcmp(arg, "-h") || !strcmp(arg, "--help")) {
usage();
return 0;
}
if (!strncmp(arg, "--load=", 7)) {
if (need_input) {
xerror("Too many `--load' options!");
}
if (need_output) {
xerror("Cannot have both `--load' and `--save' options!");
}
if (strlen(arg) <= 7) {
xerror("--load: bad file specification!");
}
need_input = 1;
strcpy(raw_data_file, arg + 7);
recog = 1;
}
if (!strncmp(arg, "--save=", 7)) {
if (need_output) {
xerror("Too many `--save' options!");
}
if (need_input) {
xerror("Cannot have both `--load' and `--save' options!");
}
if (strlen(arg) <= 7) {
xerror("--save: bad file specification!");
}
need_output = 1;
strcpy(raw_data_file, arg + 7);
recog = 1;
}
if (!strncmp(arg, "--outfile=", 10)) {
if (strlen(arg) <= 10) {
xerror("--output: bad file specification!");
}
strcpy(out_file, arg + 10);
recog = 1;
}
if (!strcmp(arg, "--report") || !strcmp(arg, "--all")) {
need_report = 1;
recog = 1;
}
if (!strcmp(arg, "--clock")) {
need_clockreport = 1;
recog = 1;
}
if (!strcmp(arg, "--clock-rdtsc")) {
need_timed_clockreport = 1;
recog = 1;
}
if (!strcmp(arg, "--quiet")) {
need_quiet = 1;
recog = 1;
}
if (!strcmp(arg, "--verbose")) {
need_verbose = 1;
recog = 1;
}
if (!strcmp(arg, "--version")) {
need_version = 1;
recog = 1;
}
for (j = 0; j < sz_match; j++)
if (!strcmp(arg, matchtable[j].synopsis)) {
if (num_requests >= MAX_REQUESTS) {
xerror("Too many requests!");
}
requests[num_requests++] = matchtable[j].sw;
recog = 1;
break;
}
if (!recog) {
fprintf(stderr, "Unrecognized option: `%s'\n\n", arg);
fprintf(stderr, "Use -h to get a list of supported options\n");
return -1;
}
}
return 1;
}
static void close_out(void)
{
fclose(fout);
}
static int check_need_raw_data(void)
{
int i, j;
if (need_output || need_report) return 1;
for (i = 0; i < num_requests; i++) {
for (j = 0; j < sz_match; j++)
if (requests[i] == matchtable[j].sw &&
matchtable[j].ident_required) return 1;
}
return 0;
}
static void print_info(output_data_switch query, struct cpu_raw_data_t* raw,
struct cpu_id_t* data)
{
int i;
switch (query) {
case NEED_CPUID_PRESENT:
fprintf(fout, "%d\n", cpuid_present());
break;
case NEED_VENDOR_STR:
fprintf(fout, "%s\n", data->vendor_str);
break;
case NEED_VENDOR_ID:
fprintf(fout, "%d\n", data->vendor);
break;
case NEED_BRAND_STRING:
fprintf(fout, "%s\n", data->brand_str);
break;
case NEED_FAMILY:
fprintf(fout, "%d\n", data->family);
break;
case NEED_MODEL:
fprintf(fout, "%d\n", data->model);
break;
case NEED_STEPPING:
fprintf(fout, "%d\n", data->stepping);
break;
case NEED_EXT_FAMILY:
fprintf(fout, "%d\n", data->ext_family);
break;
case NEED_EXT_MODEL:
fprintf(fout, "%d\n", data->ext_model);
break;
case NEED_NUM_CORES:
fprintf(fout, "%d\n", data->num_cores);
break;
case NEED_NUM_LOGICAL:
fprintf(fout, "%d\n", data->num_logical_cpus);
break;
case NEED_TOTAL_CPUS:
fprintf(fout, "%d\n", data->total_cpus);
break;
case NEED_L1D_SIZE:
fprintf(fout, "%d\n", data->l1_data_cache);
break;
case NEED_L1I_SIZE:
fprintf(fout, "%d\n", data->l1_instruction_cache);
break;
case NEED_L2_SIZE:
fprintf(fout, "%d\n", data->l2_cache);
break;
case NEED_L3_SIZE:
fprintf(fout, "%d\n", data->l3_cache);
break;
case NEED_L1D_ASSOC:
fprintf(fout, "%d\n", data->l1_assoc);
break;
case NEED_L2_ASSOC:
fprintf(fout, "%d\n", data->l2_assoc);
break;
case NEED_L3_ASSOC:
fprintf(fout, "%d\n", data->l3_assoc);
break;
case NEED_L1D_CACHELINE:
fprintf(fout, "%d\n", data->l1_cacheline);
break;
case NEED_L2_CACHELINE:
fprintf(fout, "%d\n", data->l2_cacheline);
break;
case NEED_L3_CACHELINE:
fprintf(fout, "%d\n", data->l3_cacheline);
break;
case NEED_CODENAME:
fprintf(fout, "%s\n", data->cpu_codename);
break;
case NEED_FEATURES:
{
for (i = 0; i < NUM_CPU_FEATURES; i++)
if (data->flags[i])
fprintf(fout, " %s", cpu_feature_str(i));
fprintf(fout, "\n");
break;
}
case NEED_CLOCK:
fprintf(fout, "%d\n", cpu_clock());
break;
case NEED_CLOCK_RDTSC:
fprintf(fout, "%d\n", cpu_clock_measure(400, 1));
break;
default:
fprintf(fout, "How did you get here?!?\n");
break;
}
}
int main(int argc, char** argv)
{
int parseres = parse_cmdline(argc, argv);
int i, readres, writeres;
int only_clock_queries;
if (parseres != 1)
return parseres;
struct cpu_raw_data_t raw;
struct cpu_id_t data;
/* In quiet mode, disable libcpuid warning messages: */
if (need_quiet)
cpuid_set_warn_function(NULL);
/* Redirect output, if necessary: */
if (strcmp(out_file, "") && strcmp(out_file, "-")) {
fout = fopen(out_file, "wt");
if (!fout) {
if (!need_quiet)
fprintf(stderr, "Cannot open `%s' for writing!\n", out_file);
return -1;
}
atexit(close_out);
} else {
fout = stdout;
}
/* If requested, print library version: */
if (need_version)
fprintf(fout, "%s\n", cpuid_lib_version());
if (need_input) {
/* We have a request to input raw CPUID data from file: */
if (!strcmp(raw_data_file, "-"))
/* Input from stdin */
readres = cpuid_deserialize_raw_data(&raw, "");
else
/* Input from file */
readres = cpuid_deserialize_raw_data(&raw, raw_data_file);
if (readres < 0) {
if (!need_quiet) {
fprintf(stderr, "Cannot deserialize raw data from ");
if (!strcmp(raw_data_file, "-"))
fprintf(stderr, "stdin\n");
else
fprintf(stderr, "file `%s'\n", raw_data_file);
/* Print the error message */
fprintf(stderr, "Error: %s\n", cpuid_error());
}
return -1;
}
} else {
if (check_need_raw_data()) {
/* Try to obtain raw CPUID data from the CPU: */
readres = cpuid_get_raw_data(&raw);
if (readres < 0) {
if (!need_quiet) {
fprintf(stderr, "Cannot obtain raw CPU data!\n");
fprintf(stderr, "Error: %s\n", cpuid_error());
}
return -1;
}
}
}
/* Need to dump raw CPUID data to file: */
if (need_output) {
if (need_verbose)
printf("Writing raw CPUID dump to `%s'\n", raw_data_file);
if (!strcmp(raw_data_file, "-"))
/* Serialize to stdout */
writeres = cpuid_serialize_raw_data(&raw, "");
else
/* Serialize to file */
writeres = cpuid_serialize_raw_data(&raw, raw_data_file);
if (writeres < 0) {
if (!need_quiet) {
fprintf(stderr, "Cannot serialize raw data to ");
if (!strcmp(raw_data_file, "-"))
fprintf(stderr, "stdout\n");
else
fprintf(stderr, "file `%s'\n", raw_data_file);
/* Print the error message */
fprintf(stderr, "Error: %s\n", cpuid_error());
}
return -1;
}
}
if (need_report) {
if (need_verbose) {
printf("Writing decoded CPU report to `%s'\n", out_file);
}
/* Write a thorough report of cpu_id_t structure to output (usually stdout) */
fprintf(fout, "CPUID is present\n");
/*
* Try CPU identification
* (this fill the `data' structure with decoded CPU features)
*/
if (cpu_identify(&raw, &data) < 0)
fprintf(fout, "Error identifying the CPU: %s\n", cpuid_error());
/* OK, now write what we have in `data'...: */
fprintf(fout, "CPU Info:\n------------------\n");
fprintf(fout, " vendor_str : `%s'\n", data.vendor_str);
fprintf(fout, " vendor id : %d\n", (int) data.vendor);
fprintf(fout, " brand_str : `%s'\n", data.brand_str);
fprintf(fout, " family : %d\n", data.family);
fprintf(fout, " model : %d\n", data.model);
fprintf(fout, " stepping : %d\n", data.stepping);
fprintf(fout, " ext_family : %d\n", data.ext_family);
fprintf(fout, " ext_model : %d\n", data.ext_model);
fprintf(fout, " num_cores : %d\n", data.num_cores);
fprintf(fout, " num_logical: %d\n", data.num_logical_cpus);
fprintf(fout, " total_cpus : %d\n", data.total_cpus);
fprintf(fout, " L1 D cache : %d KB\n", data.l1_data_cache);
fprintf(fout, " L1 I cache : %d KB\n", data.l1_instruction_cache);
fprintf(fout, " L2 cache : %d KB\n", data.l2_cache);
fprintf(fout, " L3 cache : %d KB\n", data.l3_cache);
fprintf(fout, " L1D assoc. : %d-way\n", data.l1_assoc);
fprintf(fout, " L2 assoc. : %d-way\n", data.l2_assoc);
fprintf(fout, " L3 assoc. : %d-way\n", data.l3_assoc);
fprintf(fout, " L1D line sz: %d bytes\n", data.l1_cacheline);
fprintf(fout, " L2 line sz : %d bytes\n", data.l2_cacheline);
fprintf(fout, " L3 line sz : %d bytes\n", data.l3_cacheline);
fprintf(fout, " code name : `%s'\n", data.cpu_codename);
fprintf(fout, " features :");
/*
* Here we enumerate all CPU feature bits, and when a feature
* is present output its name:
*/
for (i = 0; i < NUM_CPU_FEATURES; i++)
if (data.flags[i])
fprintf(fout, " %s", cpu_feature_str(i));
fprintf(fout, "\n");
/* Is CPU clock info requested? */
if (need_clockreport) {
if (need_timed_clockreport) {
/* Here we use the RDTSC-based routine */
fprintf(fout, " cpu clock : %d MHz\n",
cpu_clock_measure(400, 1));
} else {
/* Here we use the OS-provided info */
fprintf(fout, " cpu clock : %d MHz\n",
cpu_clock());
}
}
}
/*
* Check if we have any queries to process.
* We have to handle the case when `--clock' or `--clock-rdtsc' options
* are present.
* If in report mode, this will generate spurious output after the
* report, if not handled explicitly.
*/
only_clock_queries = 1;
for (i = 0; i < num_requests; i++)
if (requests[i] != NEED_CLOCK && requests[i] != NEED_CLOCK_RDTSC) {
only_clock_queries = 0;
break;
}
/* OK, process all queries. */
if ((!need_report || !only_clock_queries) && num_requests > 0) {
/* Identify the CPU. Make it do cpuid_get_raw_data() itself */
if (check_need_raw_data() && cpu_identify(NULL, &data) < 0) {
if (!need_quiet)
fprintf(stderr,
"Error identifying the CPU: %s\n",
cpuid_error());
return -1;
}
for (i = 0; i < num_requests; i++)
print_info(requests[i], &raw, &data);
}
return 0;
}
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