Fix allocation count

The realloc case in continueWrite should not increment the counter,
the pointer passed to realloc is guaranteed to be non-NULL so the total
number of allocations will not have changed.

When realloc is called in restartWrite mData has not been checked
against NULL, increment the counter if it was NULL.

Bug: 26086286
Change-Id: I4c8af450cca1868b91793c0c5f0d8c4b4b5badbe

1 files changed, 3 insertions, 1 deletions

diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 94968218e0..258557918d 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -1963,6 +1963,9 @@ status_t Parcel::restartWrite(size_t desired)
         pthread_mutex_lock(&gParcelGlobalAllocSizeLock);
         gParcelGlobalAllocSize += desired;
         gParcelGlobalAllocSize -= mDataCapacity;
+        if (!mData) {
+            gParcelGlobalAllocCount++;
+        }
         pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);
         mData = data;
         mDataCapacity = desired;
@@ -2094,7 +2097,6 @@ status_t Parcel::continueWrite(size_t desired)
                 pthread_mutex_lock(&gParcelGlobalAllocSizeLock);
                 gParcelGlobalAllocSize += desired;
                 gParcelGlobalAllocSize -= mDataCapacity;
-                gParcelGlobalAllocCount++;
                 pthread_mutex_unlock(&gParcelGlobalAllocSizeLock);
                 mData = data;
                 mDataCapacity = desired;