From 3d5ccfd9d7cc8f5b5026b00dcdf8c8f639145200 Mon Sep 17 00:00:00 2001
From: Florin Malita <fmalita@chromium.org>
Date: Tue, 22 Oct 2019 15:33:59 -0400
Subject: [PATCH] Skip unneeded reallocs in SkTDArray::shrinkToFit()

Change-Id: I885eb1769ffa639026929dc7aa68312e0dbf91b8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/250037
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
---
 include/private/SkTDArray.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/private/SkTDArray.h b/include/private/SkTDArray.h
index 59c180bcde..f4d2e7c3ea 100644
--- a/include/private/SkTDArray.h
+++ b/include/private/SkTDArray.h
@@ -319,8 +319,11 @@ public:
 #endif
 
     void shrinkToFit() {
-        fReserve = fCount;
-        fArray = (T*)sk_realloc_throw(fArray, fReserve * sizeof(T));
+        if (fReserve != fCount) {
+            SkASSERT(fReserve > fCount);
+            fReserve = fCount;
+            fArray = (T*)sk_realloc_throw(fArray, fReserve * sizeof(T));
+        }
     }
 
 private: