Make the benchmarks print out stats

Makefile.am

@@ -37,6 +37,7 @@ noinst_HEADERS += src/field_gmp.h
 noinst_HEADERS += src/field_gmp_impl.h
 noinst_HEADERS += src/field.h
 noinst_HEADERS += src/field_impl.h
+noinst_HEADERS += src/bench.h
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libsecp256k1.pc

src/bench.h

@@ -0,0 +1,37 @@
+/**********************************************************************
+ * Copyright (c) 2014 Pieter Wuille                                   *
+ * Distributed under the MIT software license, see the accompanying   *
+ * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
+ **********************************************************************/
+
+#ifndef _SECP256K1_BENCH_H_
+#define _SECP256K1_BENCH_H_
+
+#include <stdio.h>
+#include <math.h>
+#include "sys/time.h"
+
+static double gettimedouble(void) {
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return tv.tv_usec * 0.000001 + tv.tv_sec;
+}
+
+void run_benchmark(void (*benchmark)(void*), void (*setup)(void*), void (*teardown)(void*), void* data, int count, int iter) {
+    double min = HUGE_VAL;
+    double sum = 0.0;
+    double max = 0.0;
+    for (int i = 0; i < count; i++) {
+        if (setup) setup(data);
+        double begin = gettimedouble();
+        benchmark(data);
+        double total = gettimedouble() - begin;
+        if (teardown) teardown(data);
+        if (total < min) min = total;
+        if (total > max) max = total;
+        sum += total;
+    }
+    printf("min %.3fus / avg %.3fus / max %.3fus\n", min * 1000000.0 / iter, (sum / count) * 1000000.0 / iter, max * 1000000.0 / iter);
+}
+
+#endif

src/bench_inv.c

@@ -12,30 +12,41 @@
 #include "field_impl.h"
 #include "group_impl.h"
 #include "scalar_impl.h"
+#include "bench.h"
+
+typedef struct {
+    secp256k1_scalar_t base, x;
+} bench_inv_t;
+
+void bench_inv_setup(void* arg) {
+    bench_inv_t *data = (bench_inv_t*)arg;
 
-int main(void) {
     static const unsigned char init[32] = {
         0x02, 0x03, 0x05, 0x07, 0x0b, 0x0d, 0x11, 0x13,
         0x17, 0x1d, 0x1f, 0x25, 0x29, 0x2b, 0x2f, 0x35,
         0x3b, 0x3d, 0x43, 0x47, 0x49, 0x4f, 0x53, 0x59,
         0x61, 0x65, 0x67, 0x6b, 0x6d, 0x71, 0x7f, 0x83
     };
-    static const unsigned char fini[32] = {
-        0xba, 0x28, 0x58, 0xd8, 0xaa, 0x11, 0xd6, 0xf2,
-        0xfa, 0xce, 0x50, 0xb1, 0x67, 0x19, 0xb1, 0xa6,
-        0xe0, 0xaa, 0x84, 0x53, 0xf6, 0x80, 0xfc, 0x23,
-        0x88, 0x3c, 0xd6, 0x74, 0x9f, 0x27, 0x09, 0x03
-    };
-    secp256k1_ge_start();
-    secp256k1_scalar_t base, x;
-    secp256k1_scalar_set_b32(&base, init, NULL);
-    secp256k1_scalar_set_b32(&x, init, NULL);
-    for (int i=0; i<1000000; i++) {
-        secp256k1_scalar_inverse(&x, &x);
-        secp256k1_scalar_add(&x, &x, &base);
+
+    secp256k1_scalar_set_b32(&data->base, init, NULL);
+    secp256k1_scalar_set_b32(&data->x, init, NULL);
+}
+
+void bench_inv(void* arg) {
+    bench_inv_t *data = (bench_inv_t*)arg;
+
+    for (int i=0; i<20000; i++) {
+        secp256k1_scalar_inverse(&data->x, &data->x);
+        secp256k1_scalar_add(&data->x, &data->x, &data->base);
     }
-    unsigned char res[32];
-    secp256k1_scalar_get_b32(res, &x);
-    CHECK(memcmp(res, fini, 32) == 0);
+}
+
+int main(void) {
+    secp256k1_ge_start();
+
+    bench_inv_t data;
+    run_benchmark(bench_inv, bench_inv_setup, NULL, &data, 10, 20000);
+
+    secp256k1_ge_stop();
     return 0;
 }

src/bench_recover.c

@@ -4,40 +4,42 @@
  * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
  **********************************************************************/
 
-#include <stdio.h>
-#include <string.h>
-
 #include "include/secp256k1.h"
 #include "util.h"
+#include "bench.h"
 
-int main(void) {
-    secp256k1_start(SECP256K1_START_VERIFY);
-
+typedef struct {
     unsigned char msg[32];
     unsigned char sig[64];
+} bench_recover_t;
 
-    for (int i = 0; i < 32; i++) msg[i] = 1 + i;
-    for (int i = 0; i < 64; i++) sig[i] = 65 + i;
+void bench_recover(void* arg) {
+    bench_recover_t *data = (bench_recover_t*)arg;
 
     unsigned char pubkey[33];
-    for (int i=0; i<1000000; i++) {
+    for (int i=0; i<20000; i++) {
         int pubkeylen = 33;
-        CHECK(secp256k1_ecdsa_recover_compact(msg, 32, sig, pubkey, &pubkeylen, 1, i % 2));
+        CHECK(secp256k1_ecdsa_recover_compact(data->msg, 32, data->sig, pubkey, &pubkeylen, 1, i % 2));
         for (int j = 0; j < 32; j++) {
-            sig[j + 32] = msg[j];    /* Move former message to S. */
-            msg[j] = sig[j];         /* Move former R to message. */
-            sig[j] = pubkey[j + 1];  /* Move recovered pubkey X coordinate to R (which must be a valid X coordinate). */
+            data->sig[j + 32] = data->msg[j];    /* Move former message to S. */
+            data->msg[j] = data->sig[j];         /* Move former R to message. */
+            data->sig[j] = pubkey[j + 1];        /* Move recovered pubkey X coordinate to R (which must be a valid X coordinate). */
         }
     }
+}
+
+void bench_recover_setup(void* arg) {
+    bench_recover_t *data = (bench_recover_t*)arg;
+
+    for (int i = 0; i < 32; i++) data->msg[i] = 1 + i;
+    for (int i = 0; i < 64; i++) data->sig[i] = 65 + i;
+}
+
+int main(void) {
+    secp256k1_start(SECP256K1_START_VERIFY);
 
-    static const unsigned char fini[33] = {
-        0x02,
-        0x52, 0x63, 0xae, 0x9a, 0x9d, 0x47, 0x1f, 0x1a,
-        0xb2, 0x36, 0x65, 0x89, 0x11, 0xe7, 0xcc, 0x86,
-        0xa3, 0xab, 0x97, 0xb6, 0xf1, 0xaf, 0xfd, 0x8f,
-        0x9b, 0x38, 0xb6, 0x18, 0x55, 0xe5, 0xc2, 0x43
-    };
-    CHECK(memcmp(fini, pubkey, 33) == 0);
+    bench_recover_t data;
+    run_benchmark(bench_recover, bench_recover_setup, NULL, &data, 10, 20000);
 
     secp256k1_stop();
     return 0;

src/bench_sign.c

@@ -3,46 +3,45 @@
  * Distributed under the MIT software license, see the accompanying   *
  * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
  **********************************************************************/
-#include <stdio.h>
-#include <string.h>
 
 #include "include/secp256k1.h"
 #include "util.h"
+#include "bench.h"
 
-int main(void) {
-    secp256k1_start(SECP256K1_START_SIGN);
-
+typedef struct {
     unsigned char msg[32];
     unsigned char nonce[32];
     unsigned char key[32];
+} bench_sign_t;
 
-    for (int i = 0; i < 32; i++) msg[i] = i + 1;
-    for (int i = 0; i < 32; i++) nonce[i] = i + 33;
-    for (int i = 0; i < 32; i++) key[i] = i + 65;
+static void bench_sign_setup(void* arg) {
+    bench_sign_t *data = (bench_sign_t*)arg;
 
-    unsigned char sig[64];
+    for (int i = 0; i < 32; i++) data->msg[i] = i + 1;
+    for (int i = 0; i < 32; i++) data->nonce[i] = i + 33;
+    for (int i = 0; i < 32; i++) data->key[i] = i + 65;
+}
+
+static void bench_sign(void* arg) {
+    bench_sign_t *data = (bench_sign_t*)arg;
 
-    for (int i=0; i<1000000; i++) {
+    unsigned char sig[64];
+    for (int i=0; i<20000; i++) {
         int recid = 0;
-        CHECK(secp256k1_ecdsa_sign_compact(msg, 32, sig, key, nonce, &recid));
+        CHECK(secp256k1_ecdsa_sign_compact(data->msg, 32, sig, data->key, data->nonce, &recid));
         for (int j = 0; j < 32; j++) {
-            nonce[j] = key[j];     /* Move former key to nonce  */
-            msg[j] = sig[j];       /* Move former R to message. */
-            key[j] = sig[j + 32];  /* Move former S to key.     */
+            data->nonce[j] = data->key[j];     /* Move former key to nonce  */
+            data->msg[j] = sig[j];             /* Move former R to message. */
+            data->key[j] = sig[j + 32];        /* Move former S to key.     */
         }
     }
+}
+
+int main(void) {
+    secp256k1_start(SECP256K1_START_SIGN);
 
-    static const unsigned char fini[64] = {
-        0x92, 0x03, 0xef, 0xf1, 0x58, 0x0b, 0x49, 0x8d,
-        0x22, 0x3d, 0x49, 0x0e, 0xbf, 0x26, 0x50, 0x0e,
-        0x2d, 0x62, 0x90, 0xd7, 0x82, 0xbd, 0x3d, 0x5c,
-        0xa9, 0x10, 0xa5, 0x49, 0xb1, 0xd8, 0x8c, 0xc0,
-        0x5b, 0x5e, 0x9e, 0x68, 0x51, 0x3d, 0xe8, 0xec,
-        0x82, 0x30, 0x82, 0x88, 0x8c, 0xfd, 0xe7, 0x71,
-        0x15, 0x92, 0xfc, 0x14, 0x59, 0x78, 0x31, 0xb3,
-        0xf6, 0x07, 0x91, 0x18, 0x00, 0x8d, 0x4c, 0xb2
-    };
-    CHECK(memcmp(sig, fini, 64) == 0);
+    bench_sign_t data;
+    run_benchmark(bench_sign, bench_sign_setup, NULL, &data, 10, 20000);
 
     secp256k1_stop();
     return 0;

src/bench_verify.c

@@ -0,0 +1,55 @@
+/**********************************************************************
+ * Copyright (c) 2014 Pieter Wuille                                   *
+ * Distributed under the MIT software license, see the accompanying   *
+ * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
+ **********************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+
+#include "include/secp256k1.h"
+#include "util.h"
+#include "bench.h"
+
+typedef struct {
+    unsigned char msg[32];
+    unsigned char key[32];
+    unsigned char nonce[32];
+    unsigned char sig[72];
+    int siglen;
+    unsigned char pubkey[33];
+    int pubkeylen;
+} benchmark_verify_t;
+
+static void benchmark_verify(void* arg) {
+    benchmark_verify_t* data = (benchmark_verify_t*)arg;
+
+    for (int i=0; i<20000; i++) {
+        data->sig[data->siglen - 1] ^= (i & 0xFF);
+        data->sig[data->siglen - 2] ^= ((i >> 8) & 0xFF);
+        data->sig[data->siglen - 3] ^= ((i >> 16) & 0xFF);
+        CHECK(secp256k1_ecdsa_verify(data->msg, 32, data->sig, data->siglen, data->pubkey, data->pubkeylen) == (i == 0));
+        data->sig[data->siglen - 1] ^= (i & 0xFF);
+        data->sig[data->siglen - 2] ^= ((i >> 8) & 0xFF);
+        data->sig[data->siglen - 3] ^= ((i >> 16) & 0xFF);
+    }
+}
+
+int main(void) {
+    secp256k1_start(SECP256K1_START_VERIFY | SECP256K1_START_SIGN);
+
+    benchmark_verify_t data;
+
+    for (int i = 0; i < 32; i++) data.msg[i] = 1 + i;
+    for (int i = 0; i < 32; i++) data.key[i] = 33 + i;
+    for (int i = 0; i < 32; i++) data.nonce[i] = 65 + i;
+    data.siglen = 72;
+    CHECK(secp256k1_ecdsa_sign(data.msg, 32, data.sig, &data.siglen, data.key, data.nonce));
+    data.pubkeylen = 33;
+    CHECK(secp256k1_ec_pubkey_create(data.pubkey, &data.pubkeylen, data.key, 1));
+
+    run_benchmark(benchmark_verify, NULL, NULL, &data, 10, 20000);
+
+    secp256k1_stop();
+    return 0;
+}