t/ptlsbench.c - third_party/github/h2o/picotls - Git at Google

 /*
  * Copyright (c) 2016 DeNA Co., Ltd., Kazuho Oku
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
  * deal in the Software without restriction, including without limitation the
  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  * sell copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  * IN THE SOFTWARE.
  */

 #ifdef _WINDOWS
 #include "wincompat.h"
 #else
 #include <arpa/inet.h>
 #include <sys/time.h>
 #include <sys/utsname.h>
 #include <time.h>
 #endif
 #include <assert.h>
 #include <string.h>
 #include <stdio.h>
 #include "picotls.h"
 #include "picotls/ffx.h"
 #include "picotls/minicrypto.h"
 #include "picotls/openssl.h"
 #ifndef _WINDOWS
 #include "picotls/fusion.h"
 #endif
 #include <openssl/opensslv.h>

 #ifdef _WINDOWS
 #include <bcrypt.h>
 #include "picotls/ptlsbcrypt.h"
 #ifdef _DEBUG
 #define BENCH_MODE "check"
 #else
 #define BENCH_MODE "release"
 #endif
 #include "../lib/ptlsbcrypt.c"
 #else
 #ifdef PTLS_DEBUG
 #define BENCH_MODE "debug"
 #else
 #define BENCH_MODE "release"
 #endif
 #endif

 /* Time in microseconds */
 static uint64_t bench_time()
 {
     struct timeval tv;
 #ifdef CLOCK_PROCESS_CPUTIME_ID
     struct timespec cpu;
     if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &cpu) == 0) {
         uint64_t nanos = (uint64_t)cpu.tv_nsec;
         uint64_t micros = nanos / 1000;
         micros += (1000000ull) * ((uint64_t)cpu.tv_sec);
         return micros;
     }
 #endif
     gettimeofday(&tv, NULL);
     return (uint64_t)tv.tv_sec * 1000000 + tv.tv_usec;
 }

 /* Single measurement.
  */

 #define BENCH_BATCH 1000

 static int bench_run_one(ptls_aead_context_t *e, ptls_aead_context_t *d, size_t n, size_t l, uint64_t *t_enc, uint64_t *t_dec,
                          uint64_t *s)
 {
     int ret = 0;
     uint8_t *v_in = NULL;
     uint8_t *v_enc[BENCH_BATCH];
     uint8_t *v_dec = NULL;
     uint64_t h[4];

     *t_enc = 0;
     *t_dec = 0;
     *s = 0;

     memset(v_enc, 0, sizeof(v_enc));
     memset(h, 0, sizeof(h));
     v_in = (uint8_t *)malloc(l);
     v_dec = (uint8_t *)malloc(l);
     if (v_in == NULL || v_dec == NULL) {
         ret = PTLS_ERROR_NO_MEMORY;
     }

     for (size_t i = 0; ret == 0 && i < BENCH_BATCH; i++) {
         v_enc[i] = (uint8_t *)malloc(l + PTLS_MAX_DIGEST_SIZE);
         if (v_enc[i] == 0) {
             ret = PTLS_ERROR_NO_MEMORY;
         }
     }

     if (ret == 0) {
         memset(v_in, 0, l);

         for (size_t k = 0; k < n;) {
             size_t e_len;
             size_t d_len;
             size_t i_max = ((n - k) > BENCH_BATCH) ? BENCH_BATCH : n - k;
             uint64_t old_h = h[0];
             uint64_t t_start = bench_time();
             uint64_t t_medium;
             uint64_t t_end;

             for (size_t i = 0; i < i_max; i++) {
                 h[0]++;
                 e_len = ptls_aead_encrypt(e, v_enc[i], v_in, l, h[0], h, sizeof(h));
                 *s += (v_enc[i])[l];
             }

             t_medium = bench_time();

             h[0] = old_h;

             for (size_t i = 0; i < i_max; i++) {
                 h[0]++;

                 d_len = ptls_aead_decrypt(d, v_dec, v_enc[i], e_len, h[0], h, sizeof(h));
                 if (d_len != l) {
                     ret = PTLS_ALERT_DECRYPT_ERROR;
                     break;
                 }
                 *s += v_dec[0];
             }

             t_end = bench_time();

             *t_enc += t_medium - t_start;
             *t_dec += t_end - t_medium;

             k += i_max;
         }
     }

     if (v_in != NULL) {
         free(v_in);
     }

     for (size_t i = 0; i < BENCH_BATCH; i++) {
         if (v_enc[i] != NULL) {
             free(v_enc[i]);
         }
     }

     if (v_dec != NULL) {
         free(v_dec);
     }

     return ret;
 }

 static double bench_mbps(uint64_t t, size_t l, size_t n)
 {
     double x = (double)l;

     x *= (double)n;
     x *= 8;
     x /= (double)t;
     return x;
 }

 /* Measure one specific aead implementation
  */
 static int bench_run_aead(char *OS, char *HW, int basic_ref, uint64_t s0, const char *provider, const char *algo_name,
                           ptls_aead_algorithm_t *aead, ptls_hash_algorithm_t *hash, size_t n, size_t l, uint64_t *s)
 {
     int ret = 0;

     uint8_t secret[PTLS_MAX_SECRET_SIZE];
     ptls_aead_context_t *e;
     ptls_aead_context_t *d;
     uint64_t t_e = 0;
     uint64_t t_d = 0;
     char p_version[128];

     /* Document library version as it may have impact on performance */
     p_version[0] = 0;

     if (strcmp(provider, "openssl") == 0) {
         /*
          * OPENSSL_VERSION_NUMBER is a combination of the major, minor and patch version
          * into a single integer 0xMNNFFPP0L, where M is major, NN is minor, PP is patch
          */
         uint32_t combined = OPENSSL_VERSION_NUMBER;
         int M = combined >> 28;
         int NN = (combined >> 20) & 0xFF;
         int FF = (combined >> 12) & 0xFF;
         int PP = (combined >> 4) & 0xFF;
         char letter = 'a' - 1 + PP;

 #ifdef _WINDOWS
         (void)sprintf_s(p_version, sizeof(p_version), "%d.%d.%d%c", M, NN, FF, letter);
 #else
         (void)sprintf(p_version, "%d.%d.%d%c", M, NN, FF, letter);
 #endif
     }

     *s += s0;

     memset(secret, 'z', sizeof(secret));
     e = ptls_aead_new(aead, hash, 1, secret, NULL);
     d = ptls_aead_new(aead, hash, 0, secret, NULL);

     if (e == NULL || d == NULL) {
         ret = PTLS_ERROR_NO_MEMORY;
     } else {
         ret = bench_run_one(e, d, n, l, &t_e, &t_d, s);
         if (ret == 0) {
             printf("%s, %s, %d, %s, %d, %s, %s, %s, %d, %d, %d, %d, %.2f, %.2f\n", OS, HW, (int)(8 * sizeof(size_t)), BENCH_MODE,
                    basic_ref, provider, p_version, algo_name, (int)n, (int)l, (int)t_e, (int)t_d, bench_mbps(t_e, l, n),
                    bench_mbps(t_d, l, n));
         }
     }

     if (e) {
         ptls_aead_free(e);
     }

     if (d) {
         ptls_aead_free(d);
     }

     return ret;
 }

 typedef struct st_ptls_bench_entry_t {
     const char *provider;
     const char *algo_name;
     ptls_aead_algorithm_t *aead;
     ptls_hash_algorithm_t *hash;
     int enabled_by_defaut;
 } ptls_bench_entry_t;

 static ptls_bench_entry_t aead_list[] = {
     /* Minicrypto AES disabled by defaut because of atrocious perf */
     {"minicrypto", "aes128gcm", &ptls_minicrypto_aes128gcm, &ptls_minicrypto_sha256, 0},
     {"minicrypto", "aes256gcm", &ptls_minicrypto_aes256gcm, &ptls_minicrypto_sha384, 0},
     {"minicrypto", "chacha20poly1305", &ptls_minicrypto_chacha20poly1305, &ptls_minicrypto_sha256, 1},
 #ifdef PTLS_HAVE_AEGIS
     {"minicrypto", "aegis128l", &ptls_minicrypto_aegis128l, &ptls_minicrypto_sha256, 1},
     {"minicrypto", "aegis256", &ptls_minicrypto_aegis256, &ptls_minicrypto_sha384, 1},
 #endif
 #ifdef _WINDOWS
     {"ptlsbcrypt", "aes128gcm", &ptls_bcrypt_aes128gcm, &ptls_bcrypt_sha256, 1},
     {"ptlsbcrypt", "aes256gcm", &ptls_bcrypt_aes256gcm, &ptls_bcrypt_sha384, 1},
 #endif
 #if !defined(_WINDOWS)
     {"fusion", "aes128gcm", &ptls_fusion_aes128gcm, &ptls_minicrypto_sha256, 1},
     {"fusion", "aes256gcm", &ptls_fusion_aes256gcm, &ptls_minicrypto_sha384, 1},
 #endif
 #if PTLS_OPENSSL_HAVE_CHACHA20_POLY1305
     {"openssl", "chacha20poly1305", &ptls_openssl_chacha20poly1305, &ptls_minicrypto_sha256, 1},
 #endif
     {"openssl", "aes128gcm", &ptls_openssl_aes128gcm, &ptls_minicrypto_sha256, 1},
     {"openssl", "aes256gcm", &ptls_openssl_aes256gcm, &ptls_minicrypto_sha384, 1}};

 static size_t nb_aead_list = sizeof(aead_list) / sizeof(ptls_bench_entry_t);

 static int bench_basic(uint64_t *x)
 {
     uint64_t t_start = bench_time();
     uint32_t a = (uint32_t)((*x) & 0xFFFFFFFF);
     uint32_t b = (uint32_t)((*x) >> 32);

     /* Evaluate the current CPU. The benchmark is designed to
      * emulate typical encryption operations, hopefully so it
      * will not be compiled out by the optimizer. */
     for (unsigned int i = 0; i < 10000000; i++) {
         uint32_t v = (a >> 3) | (a << 29);
         v += a;
         v ^= b;
         b = a;
         a = v;
     }
     *x = (((uint64_t)b) << 32) | a;

     return (int)(bench_time() - t_start);
 }

 int main(int argc, char **argv)
 {
     int ret = 0;
     int force_all_tests = 0;
     uint64_t x = 0xdeadbeef;
     uint64_t s = 0;
     int basic_ref = bench_basic(&x);
     char OS[128];
     char HW[128];
 #ifndef _WINDOWS
     struct utsname uts;
 #endif

 #ifdef _WINDOWS
     (void)strcpy_s(OS, sizeof(OS), "windows");
     (void)strcpy_s(HW, sizeof(HW), "x86_64");
 #else
     OS[0] = 0;
     HW[0] = 0;
     if (uname(&uts) == 0) {
         if (strlen(uts.sysname) + 1 < sizeof(OS)) {
             strcpy(OS, uts.sysname);
         }
         if (strlen(uts.machine) + 1 < sizeof(HW)) {
             strcpy(HW, uts.machine);
         }
     }
 #endif

     if (argc == 2 && strcmp(argv[1], "-f") == 0) {
         force_all_tests = 1;
     } else if (argc > 1) {
         fprintf(stderr, "Usage: %s [-f]\n   Use option \"-f\" to force execution of the slower tests.\n", argv[0]);
         exit(-1);
     }

     printf(
         "OS, HW, bits, mode, 10M ops, provider, version, algorithm, N, L, encrypt us, decrypt us, encrypt mbps, decrypt mbps,\n");

     for (size_t i = 0; ret == 0 && i < nb_aead_list; i++) {
         if (aead_list[i].enabled_by_defaut || force_all_tests) {
             ret = bench_run_aead(OS, HW, basic_ref, x, aead_list[i].provider, aead_list[i].algo_name, aead_list[i].aead,
                                  aead_list[i].hash, 1000, 1500, &s);
         }
     }

     /* Gratuitous test, designed to ensure that the initial computation
      * of the basic reference benchmark is not optimized away. */
     if (s == 0) {
         printf("Unexpected value of test sum s = %llx\n", (unsigned long long)s);
     }

     return ret;
 }
	/*
	* Copyright (c) 2016 DeNA Co., Ltd., Kazuho Oku
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to
	* deal in the Software without restriction, including without limitation the
	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	* sell copies of the Software, and to permit persons to whom the Software is
	* furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	* IN THE SOFTWARE.
	*/

	#ifdef _WINDOWS
	#include "wincompat.h"
	#else
	#include <arpa/inet.h>
	#include <sys/time.h>
	#include <sys/utsname.h>
	#include <time.h>
	#endif
	#include <assert.h>
	#include <string.h>
	#include <stdio.h>
	#include "picotls.h"
	#include "picotls/ffx.h"
	#include "picotls/minicrypto.h"
	#include "picotls/openssl.h"
	#ifndef _WINDOWS
	#include "picotls/fusion.h"
	#endif
	#include <openssl/opensslv.h>

	#ifdef _WINDOWS
	#include <bcrypt.h>
	#include "picotls/ptlsbcrypt.h"
	#ifdef _DEBUG
	#define BENCH_MODE "check"
	#else
	#define BENCH_MODE "release"
	#endif
	#include "../lib/ptlsbcrypt.c"
	#else
	#ifdef PTLS_DEBUG
	#define BENCH_MODE "debug"
	#else
	#define BENCH_MODE "release"
	#endif
	#endif

	/* Time in microseconds */
	static uint64_t bench_time()
	{
	struct timeval tv;
	#ifdef CLOCK_PROCESS_CPUTIME_ID
	struct timespec cpu;
	if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &cpu) == 0) {
	uint64_t nanos = (uint64_t)cpu.tv_nsec;
	uint64_t micros = nanos / 1000;
	micros += (1000000ull) * ((uint64_t)cpu.tv_sec);
	return micros;
	}
	#endif
	gettimeofday(&tv, NULL);
	return (uint64_t)tv.tv_sec * 1000000 + tv.tv_usec;
	}

	/* Single measurement.
	*/

	#define BENCH_BATCH 1000

	static int bench_run_one(ptls_aead_context_t e, ptls_aead_context_t d, size_t n, size_t l, uint64_t t_enc, uint64_t t_dec,
	uint64_t *s)
	{
	int ret = 0;
	uint8_t *v_in = NULL;
	uint8_t *v_enc[BENCH_BATCH];
	uint8_t *v_dec = NULL;
	uint64_t h[4];

	*t_enc = 0;
	*t_dec = 0;
	*s = 0;

	memset(v_enc, 0, sizeof(v_enc));
	memset(h, 0, sizeof(h));
	v_in = (uint8_t *)malloc(l);
	v_dec = (uint8_t *)malloc(l);
	if (v_in == NULL \|\| v_dec == NULL) {
	ret = PTLS_ERROR_NO_MEMORY;
	}

	for (size_t i = 0; ret == 0 && i < BENCH_BATCH; i++) {
	v_enc[i] = (uint8_t *)malloc(l + PTLS_MAX_DIGEST_SIZE);
	if (v_enc[i] == 0) {
	ret = PTLS_ERROR_NO_MEMORY;
	}
	}

	if (ret == 0) {
	memset(v_in, 0, l);

	for (size_t k = 0; k < n;) {
	size_t e_len;
	size_t d_len;
	size_t i_max = ((n - k) > BENCH_BATCH) ? BENCH_BATCH : n - k;
	uint64_t old_h = h[0];
	uint64_t t_start = bench_time();
	uint64_t t_medium;
	uint64_t t_end;

	for (size_t i = 0; i < i_max; i++) {
	h[0]++;
	e_len = ptls_aead_encrypt(e, v_enc[i], v_in, l, h[0], h, sizeof(h));
	*s += (v_enc[i])[l];
	}

	t_medium = bench_time();

	h[0] = old_h;

	for (size_t i = 0; i < i_max; i++) {
	h[0]++;

	d_len = ptls_aead_decrypt(d, v_dec, v_enc[i], e_len, h[0], h, sizeof(h));
	if (d_len != l) {
	ret = PTLS_ALERT_DECRYPT_ERROR;
	break;
	}
	*s += v_dec[0];
	}

	t_end = bench_time();

	*t_enc += t_medium - t_start;
	*t_dec += t_end - t_medium;

	k += i_max;
	}
	}

	if (v_in != NULL) {
	free(v_in);
	}

	for (size_t i = 0; i < BENCH_BATCH; i++) {
	if (v_enc[i] != NULL) {
	free(v_enc[i]);
	}
	}

	if (v_dec != NULL) {
	free(v_dec);
	}

	return ret;
	}

	static double bench_mbps(uint64_t t, size_t l, size_t n)
	{
	double x = (double)l;

	x *= (double)n;
	x *= 8;
	x /= (double)t;
	return x;
	}

	/* Measure one specific aead implementation
	*/
	static int bench_run_aead(char OS, char HW, int basic_ref, uint64_t s0, const char provider, const char algo_name,
	ptls_aead_algorithm_t aead, ptls_hash_algorithm_t hash, size_t n, size_t l, uint64_t *s)
	{
	int ret = 0;

	uint8_t secret[PTLS_MAX_SECRET_SIZE];
	ptls_aead_context_t *e;
	ptls_aead_context_t *d;
	uint64_t t_e = 0;
	uint64_t t_d = 0;
	char p_version[128];

	/* Document library version as it may have impact on performance */
	p_version[0] = 0;

	if (strcmp(provider, "openssl") == 0) {
	/*
	* OPENSSL_VERSION_NUMBER is a combination of the major, minor and patch version
	* into a single integer 0xMNNFFPP0L, where M is major, NN is minor, PP is patch
	*/
	uint32_t combined = OPENSSL_VERSION_NUMBER;
	int M = combined >> 28;
	int NN = (combined >> 20) & 0xFF;
	int FF = (combined >> 12) & 0xFF;
	int PP = (combined >> 4) & 0xFF;
	char letter = 'a' - 1 + PP;

	#ifdef _WINDOWS
	(void)sprintf_s(p_version, sizeof(p_version), "%d.%d.%d%c", M, NN, FF, letter);
	#else
	(void)sprintf(p_version, "%d.%d.%d%c", M, NN, FF, letter);
	#endif
	}

	*s += s0;

	memset(secret, 'z', sizeof(secret));
	e = ptls_aead_new(aead, hash, 1, secret, NULL);
	d = ptls_aead_new(aead, hash, 0, secret, NULL);

	if (e == NULL \|\| d == NULL) {
	ret = PTLS_ERROR_NO_MEMORY;
	} else {
	ret = bench_run_one(e, d, n, l, &t_e, &t_d, s);
	if (ret == 0) {
	printf("%s, %s, %d, %s, %d, %s, %s, %s, %d, %d, %d, %d, %.2f, %.2f\n", OS, HW, (int)(8 * sizeof(size_t)), BENCH_MODE,
	basic_ref, provider, p_version, algo_name, (int)n, (int)l, (int)t_e, (int)t_d, bench_mbps(t_e, l, n),
	bench_mbps(t_d, l, n));
	}
	}

	if (e) {
	ptls_aead_free(e);
	}

	if (d) {
	ptls_aead_free(d);
	}

	return ret;
	}

	typedef struct st_ptls_bench_entry_t {
	const char *provider;
	const char *algo_name;
	ptls_aead_algorithm_t *aead;
	ptls_hash_algorithm_t *hash;
	int enabled_by_defaut;
	} ptls_bench_entry_t;

	static ptls_bench_entry_t aead_list[] = {
	/* Minicrypto AES disabled by defaut because of atrocious perf */
	{"minicrypto", "aes128gcm", &ptls_minicrypto_aes128gcm, &ptls_minicrypto_sha256, 0},
	{"minicrypto", "aes256gcm", &ptls_minicrypto_aes256gcm, &ptls_minicrypto_sha384, 0},
	{"minicrypto", "chacha20poly1305", &ptls_minicrypto_chacha20poly1305, &ptls_minicrypto_sha256, 1},
	#ifdef PTLS_HAVE_AEGIS
	{"minicrypto", "aegis128l", &ptls_minicrypto_aegis128l, &ptls_minicrypto_sha256, 1},
	{"minicrypto", "aegis256", &ptls_minicrypto_aegis256, &ptls_minicrypto_sha384, 1},
	#endif
	#ifdef _WINDOWS
	{"ptlsbcrypt", "aes128gcm", &ptls_bcrypt_aes128gcm, &ptls_bcrypt_sha256, 1},
	{"ptlsbcrypt", "aes256gcm", &ptls_bcrypt_aes256gcm, &ptls_bcrypt_sha384, 1},
	#endif
	#if !defined(_WINDOWS)
	{"fusion", "aes128gcm", &ptls_fusion_aes128gcm, &ptls_minicrypto_sha256, 1},
	{"fusion", "aes256gcm", &ptls_fusion_aes256gcm, &ptls_minicrypto_sha384, 1},
	#endif
	#if PTLS_OPENSSL_HAVE_CHACHA20_POLY1305
	{"openssl", "chacha20poly1305", &ptls_openssl_chacha20poly1305, &ptls_minicrypto_sha256, 1},
	#endif
	{"openssl", "aes128gcm", &ptls_openssl_aes128gcm, &ptls_minicrypto_sha256, 1},
	{"openssl", "aes256gcm", &ptls_openssl_aes256gcm, &ptls_minicrypto_sha384, 1}};

	static size_t nb_aead_list = sizeof(aead_list) / sizeof(ptls_bench_entry_t);

	static int bench_basic(uint64_t *x)
	{
	uint64_t t_start = bench_time();
	uint32_t a = (uint32_t)((*x) & 0xFFFFFFFF);
	uint32_t b = (uint32_t)((*x) >> 32);

	/* Evaluate the current CPU. The benchmark is designed to
	* emulate typical encryption operations, hopefully so it
	* will not be compiled out by the optimizer. */
	for (unsigned int i = 0; i < 10000000; i++) {
	uint32_t v = (a >> 3) \| (a << 29);
	v += a;
	v ^= b;
	b = a;
	a = v;
	}
	*x = (((uint64_t)b) << 32) \| a;

	return (int)(bench_time() - t_start);
	}

	int main(int argc, char **argv)
	{
	int ret = 0;
	int force_all_tests = 0;
	uint64_t x = 0xdeadbeef;
	uint64_t s = 0;
	int basic_ref = bench_basic(&x);
	char OS[128];
	char HW[128];
	#ifndef _WINDOWS
	struct utsname uts;
	#endif

	#ifdef _WINDOWS
	(void)strcpy_s(OS, sizeof(OS), "windows");
	(void)strcpy_s(HW, sizeof(HW), "x86_64");
	#else
	OS[0] = 0;
	HW[0] = 0;
	if (uname(&uts) == 0) {
	if (strlen(uts.sysname) + 1 < sizeof(OS)) {
	strcpy(OS, uts.sysname);
	}
	if (strlen(uts.machine) + 1 < sizeof(HW)) {
	strcpy(HW, uts.machine);
	}
	}
	#endif

	if (argc == 2 && strcmp(argv[1], "-f") == 0) {
	force_all_tests = 1;
	} else if (argc > 1) {
	fprintf(stderr, "Usage: %s [-f]\n Use option \"-f\" to force execution of the slower tests.\n", argv[0]);
	exit(-1);
	}

	printf(
	"OS, HW, bits, mode, 10M ops, provider, version, algorithm, N, L, encrypt us, decrypt us, encrypt mbps, decrypt mbps,\n");

	for (size_t i = 0; ret == 0 && i < nb_aead_list; i++) {
	if (aead_list[i].enabled_by_defaut \|\| force_all_tests) {
	ret = bench_run_aead(OS, HW, basic_ref, x, aead_list[i].provider, aead_list[i].algo_name, aead_list[i].aead,
	aead_list[i].hash, 1000, 1500, &s);
	}
	}

	/* Gratuitous test, designed to ensure that the initial computation
	* of the basic reference benchmark is not optimized away. */
	if (s == 0) {
	printf("Unexpected value of test sum s = %llx\n", (unsigned long long)s);
	}

	return ret;
	}