When computing new cursor window allocation size, add additional 1/10th of initial buffer

Author: developernotes

jni/CursorWindow.cpp

@@ -143,7 +143,7 @@ uint32_t CursorWindow::alloc(size_t requestedSize, bool aligned)
     if (size > freeSpace()) {
         LOGE("need to grow: mSize = %d, size = %d, freeSpace() = %d, numRows = %d",
              mSize, size, freeSpace(), mHeader->numRows);
-        new_allocation_sz = mSize + size - freeSpace();
+        new_allocation_sz = mSize + size - freeSpace() + GROW_WINDOW_SIZE_EXTRA;
         tempData = realloc((void *)mData, new_allocation_sz);
         if(tempData == NULL) return 0;
         mData = (uint8_t *)tempData;

jni/CursorWindow.h

@@ -35,6 +35,8 @@
 
 #define ROW_SLOT_CHUNK_NUM_ROWS 16
 
+#define GROW_WINDOW_SIZE_EXTRA MAX_WINDOW_SIZE / 10
+
 // Row slots are allocated in chunks of ROW_SLOT_CHUNK_NUM_ROWS,
 // with an offset after the rows that points to the next chunk
 #define ROW_SLOT_CHUNK_SIZE ((ROW_SLOT_CHUNK_NUM_ROWS * sizeof(row_slot_t)) + sizeof(uint32_t))