android_ddm_DdmHandleNativeHeap.cpp revision bebb26725ad04f775b040ca7b97ac4b930c0d362
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* //device/libs/android_runtime/android_ddm_DdmHandleNativeHeap.cpp 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** Copyright 2006, The Android Open Source Project 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 5a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** Licensed under the Apache License, Version 2.0 (the "License"); 6a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** you may not use this file except in compliance with the License. 7a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** You may obtain a copy of the License at 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 9a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** http://www.apache.org/licenses/LICENSE-2.0 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** 11a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** Unless required by applicable law or agreed to in writing, software 12a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** distributed under the License is distributed on an "AS IS" BASIS, 13a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes** See the License for the specific language governing permissions and 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project** limitations under the License. 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project*/ 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#undef LOG_TAG 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define LOG_TAG "DdmHandleNativeHeap" 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <JNIHelp.h> 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <jni.h> 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <android_runtime/AndroidRuntime.h> 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/Log.h> 26a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes#include <utils/String8.h> 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <fcntl.h> 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <errno.h> 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <sys/types.h> 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <sys/stat.h> 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughesextern "C" void get_malloc_leak_info(uint8_t** info, size_t* overallSize, 34a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes size_t* infoSize, size_t* totalMemory, size_t* backtraceSize); 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughesextern "C" void free_malloc_leak_info(uint8_t* info); 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris#define DDMS_HEADER_SIGNATURE 0x812345dd 39bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris#define DDMS_VERSION 2 40bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstruct Header { 42bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris#if defined(__LP64__) 43bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris uint32_t signature; 44bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris uint16_t version; 45bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris uint16_t pointerSize; 46bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris#endif 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size_t mapSize; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size_t allocSize; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size_t allocInfoSize; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size_t totalMemory; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size_t backtraceSize; 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectnamespace android { 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 56a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughesstatic void ReadFile(const char* path, String8& s) { 57a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes int fd = open(path, O_RDONLY); 58a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes if (fd != -1) { 59a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes char bytes[1024]; 60a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes ssize_t byteCount; 61a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes while ((byteCount = TEMP_FAILURE_RETRY(read(fd, bytes, sizeof(bytes)))) > 0) { 62a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes s.append(bytes, byteCount); 63a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes } 64a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes close(fd); 65a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes } 66a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes} 67a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 69a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes * Retrieve the native heap information and the info from /proc/self/maps, 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * copy them into a byte[] with a "struct Header" that holds data offsets, 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and return the array. 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 73a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughesstatic jbyteArray DdmHandleNativeHeap_getLeakInfo(JNIEnv* env, jobject) { 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Header header; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project memset(&header, 0, sizeof(header)); 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 77a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes String8 maps; 78a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes ReadFile("/proc/self/maps", maps); 79a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes header.mapSize = maps.size(); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project uint8_t* allocBytes; 82a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes get_malloc_leak_info(&allocBytes, &header.allocSize, &header.allocInfoSize, 83a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes &header.totalMemory, &header.backtraceSize); 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 85a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes ALOGD("*** mapSize: %d allocSize: %d allocInfoSize: %d totalMemory: %d", 86a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes header.mapSize, header.allocSize, header.allocInfoSize, header.totalMemory); 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 88bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris#if defined(__LP64__) 89bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris header.signature = DDMS_HEADER_SIGNATURE; 90bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris header.version = DDMS_VERSION; 91bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris header.pointerSize = sizeof(void*); 92bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris#endif 93bebb26725ad04f775b040ca7b97ac4b930c0d362Christopher Ferris 94a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes jbyteArray array = env->NewByteArray(sizeof(Header) + header.mapSize + header.allocSize); 95a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes if (array != NULL) { 96a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes env->SetByteArrayRegion(array, 0, 97a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes sizeof(header), reinterpret_cast<jbyte*>(&header)); 98a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes env->SetByteArrayRegion(array, sizeof(header), 99a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes maps.size(), reinterpret_cast<const jbyte*>(maps.string())); 100a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes env->SetByteArrayRegion(array, sizeof(header) + maps.size(), 101a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes header.allocSize, reinterpret_cast<jbyte*>(allocBytes)); 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project free_malloc_leak_info(allocBytes); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return array; 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic JNINativeMethod method_table[] = { 109a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughes { "getLeakInfo", "()[B", (void*) DdmHandleNativeHeap_getLeakInfo }, 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 112a480dafbf2f0c7e526ba44dcbb0d603470df2199Elliott Hughesint register_android_ddm_DdmHandleNativeHeap(JNIEnv* env) { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return AndroidRuntime::registerNativeMethods(env, "android/ddm/DdmHandleNativeHeap", method_table, NELEM(method_table)); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 117