The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* //device/libs/android_runtime/android_ddm_DdmHandleNativeHeap.cpp |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 8 | ** |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 10 | ** |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #undef LOG_TAG |
| 19 | #define LOG_TAG "DdmHandleNativeHeap" |
| 20 | |
| 21 | #include <JNIHelp.h> |
| 22 | #include <jni.h> |
| 23 | #include <android_runtime/AndroidRuntime.h> |
| 24 | |
| 25 | #include <utils/Log.h> |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 26 | #include <utils/String8.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | |
| 28 | #include <fcntl.h> |
| 29 | #include <errno.h> |
| 30 | #include <sys/types.h> |
| 31 | #include <sys/stat.h> |
| 32 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 33 | extern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize, |
| 34 | size_t* infoSize, size_t* totalMemory, size_t* backtraceSize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 35 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 36 | extern "C" void free_malloc_leak_info(uint8_t* info); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 37 | |
| 38 | struct Header { |
| 39 | size_t mapSize; |
| 40 | size_t allocSize; |
| 41 | size_t allocInfoSize; |
| 42 | size_t totalMemory; |
| 43 | size_t backtraceSize; |
| 44 | }; |
| 45 | |
| 46 | namespace android { |
| 47 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 48 | static void ReadFile(const char* path, String8& s) { |
| 49 | int fd = open(path, O_RDONLY); |
| 50 | if (fd != -1) { |
| 51 | char bytes[1024]; |
| 52 | ssize_t byteCount; |
| 53 | while ((byteCount = TEMP_FAILURE_RETRY(read(fd, bytes, sizeof(bytes)))) > 0) { |
| 54 | s.append(bytes, byteCount); |
| 55 | } |
| 56 | close(fd); |
| 57 | } |
| 58 | } |
| 59 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 60 | /* |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 61 | * Retrieve the native heap information and the info from /proc/self/maps, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 62 | * copy them into a byte[] with a "struct Header" that holds data offsets, |
| 63 | * and return the array. |
| 64 | */ |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 65 | static jbyteArray DdmHandleNativeHeap_getLeakInfo(JNIEnv* env, jobject) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 66 | Header header; |
| 67 | memset(&header, 0, sizeof(header)); |
| 68 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 69 | String8 maps; |
| 70 | ReadFile("/proc/self/maps", maps); |
| 71 | header.mapSize = maps.size(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 72 | |
| 73 | uint8_t* allocBytes; |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 74 | get_malloc_leak_info(&allocBytes, &header.allocSize, &header.allocInfoSize, |
| 75 | &header.totalMemory, &header.backtraceSize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 76 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 77 | ALOGD("*** mapSize: %d allocSize: %d allocInfoSize: %d totalMemory: %d", |
| 78 | header.mapSize, header.allocSize, header.allocInfoSize, header.totalMemory); |
| 79 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 80 | jbyteArray array = env->NewByteArray(sizeof(Header) + header.mapSize + header.allocSize); |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 81 | if (array != NULL) { |
| 82 | env->SetByteArrayRegion(array, 0, |
| 83 | sizeof(header), reinterpret_cast<jbyte*>(&header)); |
| 84 | env->SetByteArrayRegion(array, sizeof(header), |
| 85 | maps.size(), reinterpret_cast<const jbyte*>(maps.string())); |
| 86 | env->SetByteArrayRegion(array, sizeof(header) + maps.size(), |
| 87 | header.allocSize, reinterpret_cast<jbyte*>(allocBytes)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 88 | } |
| 89 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 90 | free_malloc_leak_info(allocBytes); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 91 | return array; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | static JNINativeMethod method_table[] = { |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 95 | { "getLeakInfo", "()[B", (void*) DdmHandleNativeHeap_getLeakInfo }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 96 | }; |
| 97 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 98 | int register_android_ddm_DdmHandleNativeHeap(JNIEnv* env) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 99 | return AndroidRuntime::registerNativeMethods(env, "android/ddm/DdmHandleNativeHeap", method_table, NELEM(method_table)); |
| 100 | } |
| 101 | |
| 102 | }; |