Cap memory usage in path_create bench.

Memory usage grows unbounded in path_create without this patch (growing the
paths).  This bench also somewhat needlessly cycles through 32 paths, so now
we just work with one.

Peak memory usage drops from ~2-3G to ~150M.  This should fix the NexusS crashes,
or at least get us to the next one.

BUG=skia:1687
R=caryclark@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/111283007

git-svn-id: http://skia.googlecode.com/svn/trunk@12925 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 5 insertions, 8 deletions

diff --git a/bench/PathBench.cpp b/bench/PathBench.cpp
index 67bc901c28..e11aad78f0 100644
--- a/bench/PathBench.cpp
+++ b/bench/PathBench.cpp
@@ -327,27 +327,24 @@ protected:
 
     virtual void onPreDraw() SK_OVERRIDE {
         this->createData(10, 100);
-        fPaths.reset(kPathCnt);
     }
 
     virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
         for (int i = 0; i < loops; ++i) {
-            this->makePath(&fPaths[i & (kPathCnt - 1)]);
+            if (i % 1000 == 0) {
+                fPath.reset();  // PathRef memory can grow without bound otherwise.
+            }
+            this->makePath(&fPath);
         }
         this->restartMakingPaths();
     }
 
     virtual void onPostDraw() SK_OVERRIDE {
         this->finishedMakingPaths();
-        fPaths.reset(0);
     }
 
 private:
-    enum {
-        // must be a pow 2
-        kPathCnt = 1 << 5,
-    };
-    SkAutoTArray<SkPath> fPaths;
+    SkPath fPath;
 
     typedef RandomPathBench INHERITED;
 };