Android内存泄漏检测工具使用手册

public class LeakCanaryTestActivity extends BaseActivity {
    private static Test test;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        test = new Test(this);
    }
    private static class Test{
        public Test(Context context) {
            this.context = context;
        }
        private Context context;
        private int a;
        private int b;
    }
}

dependencies {
  debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.3'
}

<provider android:name="com.android.tools.ir.server.InstantRunContentProvider" 
    android:multiprocess="true" 
  android:authorities="com.tzx.androidcode.com.android.tools.ir.server.InstantRunContentProvider"/>

class LeakUploader : OnHeapAnalyzedListener {
  override fun onHeapAnalyzed(heapAnalysis: HeapAnalysis) {
    TODO("Upload heap analysis to server")
    //HeapAnalysis的toString和2.0之前的版本的LeakCanary.leakInfo获得的信息类似
    println(heapAnalysis)
  }
}
class MyApplication : Application() {
  override fun onCreate() {
    super.onCreate()
    LeakCanary.config = LeakCanary.config.copy(
        onHeapAnalyzedListener = LeakUploader()
    )
  }
}

shark-cli --device 设备id --process 包名 analyze

shark-cli -d 设备id -p 包名 -m 混淆文件 analyze

shark-cli -h 生成的hprof文件 analyze

hprof-conv memory-android.hprof memory-mat.hprof

➜  Desktop jhat
ERROR: No arguments supplied
Usage:  jhat [-stack <bool>] [-refs <bool>] [-port <port>] [-baseline <file>] [-debug <int>] [-version] [-h|-help] <file>

	-J<flag>          Pass <flag> directly to the runtime system. For
			  example, -J-mx512m to use a maximum heap size of 512MB
	-stack false:     Turn off tracking object allocation call stack.
	-refs false:      Turn off tracking of references to objects
	-port <port>:     Set the port for the HTTP server.  Defaults to 7000
	-exclude <file>:  Specify a file that lists data members that should
			  be excluded from the reachableFrom query.
	-baseline <file>: Specify a baseline object dump.  Objects in
			  both heap dumps with the same ID and same class will
			  be marked as not being "new".
	-debug <int>:     Set debug level.
			    0:  No debug output
			    1:  Debug hprof file parsing
			    2:  Debug hprof file parsing, no server
	-version          Report version number
	-h|-help          Print this help and exit
	<file>            The file to read

For a dump file that contains multiple heap dumps,
you may specify which dump in the file
by appending "#<number>" to the file name, i.e. "foo.hprof#3".

All boolean options default to "true"

 select <JavaScript expression to select>
         [ from [instanceof] <class name> <identifier>
         [ where <JavaScript boolean expression to filter> ] ]

dumpsys [options]
               meminfo 显示内存信息
               cpuinfo 显示CPU信息
               account 显示accounts信息
               activity 显示所有的activities的信息
               window 显示键盘，窗口和它们的关系
               wifi 显示wifi信息

~/Desktop adb shell dumpsys meminfo com.tzx.androidcode
Applications Memory Usage (in Kilobytes):
Uptime: 131873995 Realtime: 240892295

** MEMINFO in pid 19924 [com.tzx.androidcode] **
                   Pss  Private  Private  SwapPss     Heap     Heap     Heap
                 Total    Dirty    Clean    Dirty     Size    Alloc     Free
                ------   ------   ------   ------   ------   ------   ------
  Native Heap    11062    11032        0       99    38912    21656    17255
  Dalvik Heap     4079     3984        0        0     5638     2819     2819
 Dalvik Other     1405     1404        0        1
        Stack       64       64        0        0
       Ashmem        2        0        0        0
      Gfx dev     2052     2052        0        0
    Other dev        8        0        8        0
     .so mmap      959       80       64        4
    .jar mmap     1062        0       24        0
    .apk mmap      109        0        0        0
    .ttf mmap       33        0        0        0
    .dex mmap     4513       36     4392        0
    .oat mmap      197        0        0        0
    .art mmap     6229     5924       16        1
   Other mmap      680      196       96        0
   EGL mtrack    19320    19320        0        0
    GL mtrack     6392     6392        0        0
      Unknown     1106     1092        0       15
        TOTAL    59392    51576     4600      120    44550    24475    20074

 App Summary
                       Pss(KB)
                        ------
           Java Heap:     9924
         Native Heap:    11032
                Code:     4596
               Stack:       64
            Graphics:    27764
       Private Other:     2796
              System:     3216

               TOTAL:    59392       TOTAL SWAP PSS:      120

 Objects
               Views:       82         ViewRootImpl:        2
         AppContexts:        8           Activities:        2
              Assets:       11        AssetManagers:        0
       Local Binders:       22        Proxy Binders:       41
       Parcel memory:       10         Parcel count:       24
    Death Recipients:        2      OpenSSL Sockets:        0
            WebViews:        0

 SQL
         MEMORY_USED:        0
  PAGECACHE_OVERFLOW:        0          MALLOC_SIZE:        0

D/dalvikvm(PID): GC_Reason Amount_freed, Heap_stats, External_memory_stats, Pause_time

D/dalvikvm( 9050): GC_CONCURRENT freed 2049K, 65% free 3571K/9991K, external 4703K/5261K, paused 2ms+2ms

I/art: GC_Reason GC_Name Objects_freed(Size_freed) AllocSpace Objects,
        Large_objects_freed(Large_object_size_freed) Heap_stats LOS objects, Pause_time(s)

I/art : Explicit concurrent mark sweep GC freed 104710(7MB) AllocSpace objects,
        21(416KB) LOS objects, 33% free, 25MB/38MB, paused 1.230ms total 67.216ms