Android AOSP 系统定制 2018 程序啪啪啪
具体Case
多媒体相关
实时反馈目前系统是否在播放声音
主要介入修改点: frameworks/av/services/audioflinger/Threads.cpp
//播放线程准备时
AudioFlinger::PlaybackThread::mixer_state AudioFlinger::MixerThread::prepareTracks_l
//播放线程standby时
void AudioFlinger::MixerThread::threadLoop_standby()
系统性能相关
系统广播乱发问题
开机广播发送速度慢
BOOT_COMPLETE广播是串行广播，需要上个应用处理完成后，才能在下个应用中进行处理。
通过添加广播转发log，查看问题.
Android 7.0相关流程调试
https://blog.csdn.net/petib_wangwei/article/details/70318057
添加log以增强广播流程分析
diff --git a/base/services/core/java/com/android/server/am/ActivityManagerDebugConfig.java b/base/services/core/java/com/android/ser
index 43bb5ee..0a55c3f 100644
--- a/base/services/core/java/com/android/server/am/ActivityManagerDebugConfig.java
+++ b/base/services/core/java/com/android/server/am/ActivityManagerDebugConfig.java
@@ -50,8 +50,8 @@ class ActivityManagerDebugConfig {
static final boolean DEBUG_APP = DEBUG_ALL_ACTIVITIES || false;
static final boolean DEBUG_BACKUP = DEBUG_ALL || false;
static final boolean DEBUG_BROADCAST = DEBUG_ALL || false;
- static final boolean DEBUG_BROADCAST_BACKGROUND = DEBUG_BROADCAST || false;
- static final boolean DEBUG_BROADCAST_LIGHT = DEBUG_BROADCAST || false;
+ static final boolean DEBUG_BROADCAST_BACKGROUND = true;
+ static final boolean DEBUG_BROADCAST_LIGHT = true;
static final boolean DEBUG_CLEANUP = DEBUG_ALL || false;
static final boolean DEBUG_CONFIGURATION = DEBUG_ALL || false;
static final boolean DEBUG_CONTAINERS = DEBUG_ALL_ACTIVITIES || false;
diff --git a/base/services/core/java/com/android/server/am/BroadcastQueue.java b/base/services/core/java/com/android/server/am/Broad
index f78f29c..cfa03e5 100644
--- a/base/services/core/java/com/android/server/am/BroadcastQueue.java
+++ b/base/services/core/java/com/android/server/am/BroadcastQueue.java
@@ -780,7 +780,7 @@ public final class BroadcastQueue {
+ mQueueName + "] " + r);
for (int i=0; i<N; i++) {
Object target = r.receivers.get(i);
- if (DEBUG_BROADCAST) Slog.v(TAG_BROADCAST,
+ if (DEBUG_BROADCAST_LIGHT) Slog.v(TAG_BROADCAST,
"Delivering non-ordered on [" + mQueueName + "] to registered "
+ target + ": " + r);
deliverToRegisteredReceiverLocked(r, (BroadcastFilter)target, false, i);
系统调试相关
Valgrind不可使用的问题
- frameworks/base commit a32dbad
https://lark.alipay.com/pengcheng.wang/aosppatch/fix-valgrind-run
系统安全
多层系统签名问题
第三方应用广播接收权限管理
安全管家相关功能
系统UI定制
资源替换