Android Boot Slice(1st)

Android Boot Slice(1st)

基本流程再捋一遍：

Kernel ---> init ---> (by RC script) ---> zygote(app_process NATIVE) ---> Android Runtime ---> StartVm ---> zygote init(JAVA) ---> systemserver ---> PMS+AMS+...

When Create Android Runtime Instance

log_event里面的boot_progress_start

AndroidRuntime.cpp

LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START, ns2ms(systemTime(SYSTEM_TIME_MONOTONIC)));

When init zygote java instance after startVM

ZygoteInit.java

log_event里面的boot_progress_preload_start

EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_START,

SystemClock.uptimeMillis());

preload();

log_event里面的boot_progress_preload_end

EventLog.writeEvent(LOG_BOOT_PROGRESS_PRELOAD_END,

SystemClock.uptimeMillis());