commit b680e955f474a2f81ed35383da67209bcbdd7d10
author Eric Laurent <elaurent@google.com> Fri Sep 27 15:40:33 2019 -0700
committer jiabin <jiabin@google.com> Thu Dec 05 13:00:07 2019 -0800
tree 8fd48d3bca98f5cc5d96415255711817fc209553
parent 9e1e25dd418773ad5e574441962dcc771d3ec2a3

media utils: dump audio HAL service before restarting audioserver

Add request to create tombstones of audio HAL servers before restarting
audioserver process when the watchdog triggers.

Add audio device factory HAL interface API to retrieve HAL process pids when
possible (on debug builds).

Add AudioFlinger service API to set audio HAL process pids from
JAVA AudioService.

Bug: 141528385
Test: Force watchdog and verify tombstone creation
Change-Id: I68c1e8fb4db23e5952ad0c93d7d0b9d121b8ec18
Merged-In: I68c1e8fb4db23e5952ad0c93d7d0b9d121b8ec18

media/libaudioclient/IAudioFlinger.cpp

diff --git a/media/libaudioclient/IAudioFlinger.cpp b/media/libaudioclient/IAudioFlinger.cpp
index 54ec684..90783eb 100644
--- a/media/libaudioclient/IAudioFlinger.cpp
+++ b/media/libaudioclient/IAudioFlinger.cpp
@@ -90,10 +90,12 @@
     SET_MASTER_BALANCE,
     GET_MASTER_BALANCE,
     SET_EFFECT_SUSPENDED,
+    SET_AUDIO_HAL_PIDS
 };
 
 #define MAX_ITEMS_PER_LIST 1024
 
+
 class BpAudioFlinger : public BpInterface<IAudioFlinger>
 {
 public:
@@ -900,6 +902,20 @@
         status = reply.readParcelableVector(microphones);
         return status;
     }
+    virtual status_t setAudioHalPids(const std::vector<pid_t>& pids)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioFlinger::getInterfaceDescriptor());
+        data.writeInt32(pids.size());
+        for (auto pid : pids) {
+            data.writeInt32(pid);
+        }
+        status_t status = remote()->transact(SET_AUDIO_HAL_PIDS, data, &reply);
+        if (status != NO_ERROR) {
+            return status;
+        }
+        return static_cast <status_t> (reply.readInt32());
+    }
 };
 
 IMPLEMENT_META_INTERFACE(AudioFlinger, "android.media.IAudioFlinger");
@@ -955,7 +971,8 @@
         case SET_MODE:
         case SET_MIC_MUTE:
         case SET_LOW_RAM_DEVICE:
-        case SYSTEM_READY: {
+        case SYSTEM_READY:
+        case SET_AUDIO_HAL_PIDS: {
             if (!isServiceUid(IPCThreadState::self()->getCallingUid())) {
                 ALOGW("%s: transaction %d received from PID %d unauthorized UID %d",
                       __func__, code, IPCThreadState::self()->getCallingPid(),
@@ -1542,6 +1559,31 @@
             }
             return NO_ERROR;
         }
+        case SET_AUDIO_HAL_PIDS: {
+            CHECK_INTERFACE(IAudioFlinger, data, reply);
+            std::vector<pid_t> pids;
+            int32_t size;
+            status_t status = data.readInt32(&size);
+            if (status != NO_ERROR) {
+                return status;
+            }
+            if (size < 0) {
+                return BAD_VALUE;
+            }
+            if (size > MAX_ITEMS_PER_LIST) {
+                size = MAX_ITEMS_PER_LIST;
+            }
+            for (int32_t i = 0; i < size; i++) {
+                int32_t pid;
+                status =  data.readInt32(&pid);
+                if (status != NO_ERROR) {
+                    return status;
+                }
+                pids.push_back(pid);
+            }
+            reply->writeInt32(setAudioHalPids(pids));
+            return NO_ERROR;
+        }
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }