1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <jni.h>
18 #include <stdlib.h>
19 #include <string.h>
20 #include <sys/time.h>
21
currentTimeMillis()22 double currentTimeMillis()
23 {
24 struct timeval tv;
25 gettimeofday(&tv, (struct timezone *) NULL);
26 return tv.tv_sec * 1000.0 + tv.tv_usec / 1000.0;
27 }
28
Java_android_dram_cts_MemoryNative_runMemcpy(JNIEnv * env,jclass clazz,jint bufferSize,jint repetition)29 extern "C" JNIEXPORT jdouble JNICALL Java_android_dram_cts_MemoryNative_runMemcpy(JNIEnv* env,
30 jclass clazz, jint bufferSize, jint repetition)
31 {
32 char* src = new char[bufferSize];
33 char* dst = new char[bufferSize];
34 if ((src == NULL) || (dst == NULL)) {
35 delete[] src;
36 delete[] dst;
37 env->ThrowNew(env->FindClass("java/lang/OutOfMemoryError"), "No memory");
38 return -1;
39 }
40 memset(src, 0, bufferSize);
41 memset(dst, 0, bufferSize);
42 double start = currentTimeMillis();
43 for (int i = 0; i < repetition; i++) {
44 memcpy(dst, src, bufferSize);
45 src[bufferSize - 1] = i & 0xff;
46 }
47 double end = currentTimeMillis();
48 delete[] src;
49 delete[] dst;
50 return end - start;
51 }
52
Java_android_dram_cts_MemoryNative_runMemset(JNIEnv * env,jclass clazz,jint bufferSize,jint repetition,jint c)53 extern "C" JNIEXPORT jdouble JNICALL Java_android_dram_cts_MemoryNative_runMemset(JNIEnv* env,
54 jclass clazz, jint bufferSize, jint repetition, jint c)
55 {
56 char* dst = new char[bufferSize];
57 if (dst == NULL) {
58 delete[] dst;
59 env->ThrowNew(env->FindClass("java/lang/OutOfMemoryError"), "No memory");
60 return -1;
61 }
62 memset(dst, 0, bufferSize);
63 double start = currentTimeMillis();
64 for (int i = 0; i < repetition; i++) {
65 memset(dst, (c + i) & 0xff, bufferSize);
66 }
67 double end = currentTimeMillis();
68 delete[] dst;
69 return end - start;
70 }
71
72