1 <!-- 2 Copyright 2011 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 # Debugging Native Memory Use # 18 19 This tip assume that you are working with an eng 20 or userdebug build of the platform, not on a production device. 21 22 Android's native memory allocator has some useful debugging features. You 23 can turn on memory tracking with: 24 25 $ adb shell setprop libc.debug.malloc 1 26 $ adb shell stop 27 $ adb shell start 28 29 You need to restart the runtime so that zygote and all processes launched from 30 it are restarted with the property set. Now all Dalvik processes have memory 31 tracking turned on. You can look at these with DDMS, but first you need to 32 turn on its native memory UI: 33 34 - Open ~/.android/ddms.cfg 35 - Add a line "native=true" 36 37 Upon relaunching DDMS and selecting a process, you can switch to the new 38 native allocation tab and populate it with a list of allocations. This is 39 especially useful for debugging memory leaks. 40
