From a602086872ad725d257b3be659a774f032f06d71 Mon Sep 17 00:00:00 2001
From: Glenn Kasten <gkasten@google.com>
Date: Fri, 5 Sep 2014 16:46:46 -0700
Subject: [PATCH] Make IPowerManager native conform to .aidl for oneway

But provide a temporary escape hatch for AudioFlinger.
This oneway option will be removed as soon as possible.

Bug: 16408906
Change-Id: I20d6da1969ae05b96e72795463470eb4c1f8fbdc
---
 include/powermanager/IPowerManager.h    | 11 +++++++----
 services/powermanager/IPowerManager.cpp | 24 ++++++++++++++----------
 2 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/include/powermanager/IPowerManager.h b/include/powermanager/IPowerManager.h
index 511797a8f..91ecc5aa3 100644
--- a/include/powermanager/IPowerManager.h
+++ b/include/powermanager/IPowerManager.h
@@ -31,12 +31,15 @@ class IPowerManager : public IInterface
 public:
     DECLARE_META_INTERFACE(PowerManager);
 
+    // FIXME remove the bool isOneWay parameters as they are not oneway in the .aidl
     virtual status_t acquireWakeLock(int flags, const sp<IBinder>& lock, const String16& tag,
-            const String16& packageName) = 0;
+            const String16& packageName, bool isOneWay = false) = 0;
     virtual status_t acquireWakeLockWithUid(int flags, const sp<IBinder>& lock, const String16& tag,
-            const String16& packageName, int uid) = 0;
-    virtual status_t releaseWakeLock(const sp<IBinder>& lock, int flags) = 0;
-    virtual status_t updateWakeLockUids(const sp<IBinder>& lock, int len, const int *uids) = 0;
+            const String16& packageName, int uid, bool isOneWay = false) = 0;
+    virtual status_t releaseWakeLock(const sp<IBinder>& lock, int flags, bool isOneWay = false) = 0;
+    virtual status_t updateWakeLockUids(const sp<IBinder>& lock, int len, const int *uids,
+            bool isOneWay = false) = 0;
+    // oneway in the .aidl
     virtual status_t powerHint(int hintId, int data) = 0;
 };
 
diff --git a/services/powermanager/IPowerManager.cpp b/services/powermanager/IPowerManager.cpp
index 926c050ae..ec864ee50 100644
--- a/services/powermanager/IPowerManager.cpp
+++ b/services/powermanager/IPowerManager.cpp
@@ -45,7 +45,7 @@ public:
     }
 
     virtual status_t acquireWakeLock(int flags, const sp<IBinder>& lock, const String16& tag,
-            const String16& packageName)
+            const String16& packageName, bool isOneWay)
     {
         Parcel data, reply;
         data.writeInterfaceToken(IPowerManager::getInterfaceDescriptor());
@@ -56,11 +56,12 @@ public:
         data.writeString16(packageName);
         data.writeInt32(0); // no WorkSource
         data.writeString16(NULL, 0); // no history tag
-        return remote()->transact(ACQUIRE_WAKE_LOCK, data, &reply, IBinder::FLAG_ONEWAY);
+        return remote()->transact(ACQUIRE_WAKE_LOCK, data, &reply,
+                isOneWay ? IBinder::FLAG_ONEWAY : 0);
     }
 
     virtual status_t acquireWakeLockWithUid(int flags, const sp<IBinder>& lock, const String16& tag,
-            const String16& packageName, int uid)
+            const String16& packageName, int uid, bool isOneWay)
     {
         Parcel data, reply;
         data.writeInterfaceToken(IPowerManager::getInterfaceDescriptor());
@@ -70,26 +71,28 @@ public:
         data.writeString16(tag);
         data.writeString16(packageName);
         data.writeInt32(uid); // uid to blame for the work
-        return remote()->transact(ACQUIRE_WAKE_LOCK_UID, data, &reply, IBinder::FLAG_ONEWAY);
+        return remote()->transact(ACQUIRE_WAKE_LOCK_UID, data, &reply,
+                isOneWay ? IBinder::FLAG_ONEWAY : 0);
     }
 
-    virtual status_t releaseWakeLock(const sp<IBinder>& lock, int flags)
+    virtual status_t releaseWakeLock(const sp<IBinder>& lock, int flags, bool isOneWay)
     {
         Parcel data, reply;
         data.writeInterfaceToken(IPowerManager::getInterfaceDescriptor());
         data.writeStrongBinder(lock);
         data.writeInt32(flags);
-        return remote()->transact(RELEASE_WAKE_LOCK, data, &reply, IBinder::FLAG_ONEWAY);
+        return remote()->transact(RELEASE_WAKE_LOCK, data, &reply,
+                isOneWay ? IBinder::FLAG_ONEWAY : 0);
     }
 
-    virtual status_t updateWakeLockUids(const sp<IBinder>& lock, int len, const int *uids) {
+    virtual status_t updateWakeLockUids(const sp<IBinder>& lock, int len, const int *uids,
+            bool isOneWay) {
         Parcel data, reply;
         data.writeInterfaceToken(IPowerManager::getInterfaceDescriptor());
         data.writeStrongBinder(lock);
         data.writeInt32Array(len, uids);
-        // We don't really care too much if this succeeds (there's nothing we can do if it doesn't)
-        // but it should return ASAP
-        return remote()->transact(UPDATE_WAKE_LOCK_UIDS, data, &reply, IBinder::FLAG_ONEWAY);
+        return remote()->transact(UPDATE_WAKE_LOCK_UIDS, data, &reply,
+                isOneWay ? IBinder::FLAG_ONEWAY : 0);
     }
 
     virtual status_t powerHint(int hintId, int param)
@@ -98,6 +101,7 @@ public:
         data.writeInterfaceToken(IPowerManager::getInterfaceDescriptor());
         data.writeInt32(hintId);
         data.writeInt32(param);
+        // This FLAG_ONEWAY is in the .aidl, so there is no way to disable it
         return remote()->transact(POWER_HINT, data, &reply, IBinder::FLAG_ONEWAY);
     }
 };