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Slightly improve timing demo.

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* Add the option to only run for a subset of algos.
* Improve `hash` to show something meaningful.

Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>
This commit is contained in:
Steffen Jaeckel 2025-12-02 09:19:55 +01:00
parent 17cbd2be0a
commit a9cd3cd0ff
1 changed files with 25 additions and 10 deletions
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35
demos/timing.c
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@ -14,6 +14,8 @@ static prng_state yarrow_prng;
#define KTIMES 25
#define TIMES 100000
static const char *filter_arg;
static struct list {
int id;
ulong64 spd1, spd2, avg;
@ -56,7 +58,7 @@ static void tally_results(int type)
}
/* RDTSC from Scott Duplichan */
static ulong64 rdtsc (void)
static LTC_INLINE ulong64 rdtsc (void)
{
#if defined __GNUC__ && !defined(LTC_NO_ASM)
#if defined(__i386__) || defined(__x86_64__)
@ -111,12 +113,12 @@ static ulong64 rdtsc (void)
static ulong64 timer, skew = 0;
static void t_start(void)
static LTC_INLINE void t_start(void)
{
timer = rdtsc();
}
static ulong64 t_read(void)
static LTC_INLINE ulong64 t_read(void)
{
return rdtsc() - timer;
}
@ -470,20 +472,27 @@ static void time_cipher_lrw(void) { fprintf(stderr, "NO LRW\n"); }
static void time_hash(void)
{
unsigned long x, y1, len;
unsigned long x, y1, len = 1024;
ulong64 t1, t2, c1, c2;
hash_state md;
int (*func)(hash_state *, const unsigned char *, unsigned long), err;
unsigned char pt[MAXBLOCKSIZE] = { 0 };
unsigned char *pt = XMALLOC(len);
if (pt == NULL) {
fprintf(stderr, "\n\nout of heap yo\n\n");
exit(EXIT_FAILURE);
}
fprintf(stderr, "\n\nHASH Time Trials for:\n");
no_results = 0;
for (x = 0; hash_descriptor[x].name != NULL; x++) {
if (filter_arg && strstr(hash_descriptor[x].name, filter_arg) == NULL)
continue;
/* sanity check on hash */
if ((err = hash_descriptor[x].test()) != CRYPT_OK) {
fprintf(stderr, "\n\nERROR: Hash %s failed self-test %s\n", hash_descriptor[x].name, error_to_string(err));
XFREE(pt);
exit(EXIT_FAILURE);
}
@ -493,7 +502,6 @@ static void time_hash(void)
#define DO2 DO1 DO1
func = hash_descriptor[x].process;
len = hash_descriptor[x].blocksize;
c1 = c2 = (ulong64)-1;
for (y1 = 0; y1 < TIMES; y1++) {
@ -515,6 +523,7 @@ static void time_hash(void)
#undef DO1
}
tally_results(2);
XFREE(pt);
}
/*#warning you need an mp_rand!!!*/
@ -1368,12 +1377,15 @@ static void LTC_NORETURN die(int status)
{
FILE* o = status == EXIT_SUCCESS ? stdout : stderr;
fprintf(o,
"Usage: timing [<-h|-l|alg>] [mpi]\n\n"
"Usage: timing [<-h|-l|alg>] [mpi] [filter]\n\n"
"Run timing tests of all built-in algorithms, or only the one given in <alg>.\n\n"
"\talg\tThe algorithm to test. Use the '-l' option to check for valid values.\n"
"\talg\tThe algorithms to test. Use the '-l' option to check for valid values.\n"
"\tmpi\tThe MPI provider to use.\n"
"\tfilter\tFilter within the algorithm class (currently only for 'hash'es).\n"
"\t-l\tList all built-in algorithms that can be timed.\n"
"\t-h\tThe help you're looking at.\n"
"\t-h\tThe help you're looking at.\n\n"
"Examples:\n"
"\ttiming hash sha\t\tWill run the timing demo for all hashes containing 'sha' in their name\n"
);
exit(status);
}
@ -1440,6 +1452,9 @@ register_all_prngs();
if (crypt_mp_init(mpi_provider) != CRYPT_OK) {
fprintf(stderr, "Init of MPI provider \"%s\" failed\n", mpi_provider ? mpi_provider : "(null)");
filter_arg = mpi_provider;
} else if (argc > 3){
filter_arg = argv[3];
}
if ((err = rng_make_prng(128, find_prng("yarrow"), &yarrow_prng, NULL)) != CRYPT_OK) {