heap initial

1.

runSelectLoop -->runOnce --> Zygote.forkAndSpecialize -->nativeForkAndSpecialize --> Dalvik_dalvik_system_Zygote_forkAndSpecialize -->forkAndSpecializeCommon --> dvmGcPreZygoteFork --> dvmHeapSourceStartupBeforeFork -->addNewHeap

2.

Fork -->nativeFork --> Dalvik_dalvik_system_Zygote_fork -->dvmGcPreZygoteFork --> dvmHeapSourceStartupBeforeFork --> addNewHeap

3.

JNI_CreateJavaVM -->dvmStartup(dvmPrepForDexOpt) -->dvmGcStartup --> dvmHeapStartup -->dvmHeapSourceStartup --> addInitialHeap

 

4.分配heap[0]

dvmClassStartup()

static bool initFieldOffsets()

dvmFindRequiredClassesAndMembers()