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> |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 23 | #include "core_jni_helpers.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 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 | |
Christopher Ferris | bebb267 | 2014-09-02 12:49:32 -0700 | [diff] [blame] | 38 | #define DDMS_HEADER_SIGNATURE 0x812345dd |
| 39 | #define DDMS_VERSION 2 |
| 40 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | struct Header { |
Christopher Ferris | bebb267 | 2014-09-02 12:49:32 -0700 | [diff] [blame] | 42 | #if defined(__LP64__) |
| 43 | uint32_t signature; |
| 44 | uint16_t version; |
| 45 | uint16_t pointerSize; |
| 46 | #endif |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 47 | size_t mapSize; |
| 48 | size_t allocSize; |
| 49 | size_t allocInfoSize; |
| 50 | size_t totalMemory; |
| 51 | size_t backtraceSize; |
| 52 | }; |
| 53 | |
| 54 | namespace android { |
| 55 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 56 | static void ReadFile(const char* path, String8& s) { |
| 57 | int fd = open(path, O_RDONLY); |
| 58 | if (fd != -1) { |
| 59 | char bytes[1024]; |
| 60 | ssize_t byteCount; |
| 61 | while ((byteCount = TEMP_FAILURE_RETRY(read(fd, bytes, sizeof(bytes)))) > 0) { |
| 62 | s.append(bytes, byteCount); |
| 63 | } |
| 64 | close(fd); |
| 65 | } |
| 66 | } |
| 67 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 68 | /* |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 69 | * 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] | 70 | * copy them into a byte[] with a "struct Header" that holds data offsets, |
| 71 | * and return the array. |
| 72 | */ |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 73 | static jbyteArray DdmHandleNativeHeap_getLeakInfo(JNIEnv* env, jobject) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 74 | Header header; |
| 75 | memset(&header, 0, sizeof(header)); |
| 76 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 77 | String8 maps; |
| 78 | ReadFile("/proc/self/maps", maps); |
| 79 | header.mapSize = maps.size(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 80 | |
| 81 | uint8_t* allocBytes; |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 82 | get_malloc_leak_info(&allocBytes, &header.allocSize, &header.allocInfoSize, |
| 83 | &header.totalMemory, &header.backtraceSize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 84 | |
Dan Albert | 46d8444 | 2014-11-18 16:07:51 -0800 | [diff] [blame] | 85 | ALOGD("*** mapSize: %zu allocSize: %zu allocInfoSize: %zu totalMemory: %zu", |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 86 | header.mapSize, header.allocSize, header.allocInfoSize, header.totalMemory); |
| 87 | |
Christopher Ferris | bebb267 | 2014-09-02 12:49:32 -0700 | [diff] [blame] | 88 | #if defined(__LP64__) |
| 89 | header.signature = DDMS_HEADER_SIGNATURE; |
| 90 | header.version = DDMS_VERSION; |
| 91 | header.pointerSize = sizeof(void*); |
| 92 | #endif |
| 93 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 94 | jbyteArray array = env->NewByteArray(sizeof(Header) + header.mapSize + header.allocSize); |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 95 | if (array != NULL) { |
| 96 | env->SetByteArrayRegion(array, 0, |
| 97 | sizeof(header), reinterpret_cast<jbyte*>(&header)); |
| 98 | env->SetByteArrayRegion(array, sizeof(header), |
| 99 | maps.size(), reinterpret_cast<const jbyte*>(maps.string())); |
| 100 | env->SetByteArrayRegion(array, sizeof(header) + maps.size(), |
| 101 | header.allocSize, reinterpret_cast<jbyte*>(allocBytes)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 102 | } |
| 103 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 104 | free_malloc_leak_info(allocBytes); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 105 | return array; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 106 | } |
| 107 | |
Daniel Micay | 76f6a86 | 2015-09-19 17:31:01 -0400 | [diff] [blame] | 108 | static const JNINativeMethod method_table[] = { |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 109 | { "getLeakInfo", "()[B", (void*) DdmHandleNativeHeap_getLeakInfo }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 110 | }; |
| 111 | |
Elliott Hughes | a480daf | 2013-03-26 13:18:52 -0700 | [diff] [blame] | 112 | int register_android_ddm_DdmHandleNativeHeap(JNIEnv* env) { |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 113 | return RegisterMethodsOrDie(env, "android/ddm/DdmHandleNativeHeap", method_table, |
| 114 | NELEM(method_table)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 115 | } |
| 116 | |
| 117 | }; |