Add sk_parallel_for()

tests/SkpSkGrTest.cpp

-#if !SK_SUPPORT_GPU
-#error "GPU support required"
-#endif
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
 
 #include "GrContext.h"
 #include "GrContextFactory.h"
 #include "GrRenderTarget.h"
 #include "SkGpuDevice.h"
 #include "gl/GrGLDefines.h"
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkColor.h"
 #include "SkDevice.h"
 #include "SkGraphics.h"
 #include "SkImageDecoder.h"
 #include "SkImageEncoder.h"
 #include "SkOSFile.h"
 #include "SkPicture.h"
 #include "SkRTConf.h"
 #include "SkRunnable.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkTArray.h"
 #include "SkTDArray.h"
 #include "SkTaskGroup.h"
 #include "SkTime.h"
 #include "Test.h"
 
+#if !SK_SUPPORT_GPU
+#error "GPU support required"
+#endif
+
 #ifdef SK_BUILD_FOR_WIN
     #define PATH_SLASH "\\"
     #define IN_DIR "D:\\9-30-13\\"
     #define OUT_DIR "D:\\skpSkGr\\11\\"
     #define LINE_FEED "\r\n"
 #else
     #define PATH_SLASH "/"
     #define IN_DIR "/usr/local/google/home/caryclark" PATH_SLASH "9-30-13-skp"
     #define OUT_DIR "/media/01CD75512A7F9EE0/4" PATH_SLASH
     #define LINE_FEED "\n"
@@ skipping 115 matching lines @@
     void (*fTestFun)(SkpSkGrThreadState*);
 };
 
 SkpSkGrThreadedTestRunner::~SkpSkGrThreadedTestRunner() {
     for (int index = 0; index < fRunnables.count(); index++) {
         SkDELETE(fRunnables[index]);
     }
 }
 
 void SkpSkGrThreadedTestRunner::render() {
-    SkTaskGroup tg;
-    for (int index = 0; index < fRunnables.count(); ++ index) {
-        tg.add(fRunnables[index]);
-    }
+    // TODO: we don't really need to be using SkRunnables here anymore.
+    // We can just write the code we'd run right in the for loop.
+    sk_parallel_for(fRunnables.count(), [&](int i) {
+        fRunnables[i]->run();
+    });
 }
 
 ////////////////////////////////////////////////
 
 static const char outGrDir[] = OUT_DIR "grTest";
 static const char outSkDir[] = OUT_DIR "skTest";
 static const char outSkpDir[] = OUT_DIR "skpTest";
 static const char outDiffDir[] = OUT_DIR "outTest";
 static const char outStatusDir[] = OUT_DIR "statusTest";
 
@@ skipping 564 matching lines @@
     int testIndex = 166;
     int dirIndex = skipOverSkGr[testIndex - 166].directory;
     SkString pictDir = make_in_dir_name(dirIndex);
     if (pictDir.size() == 0) {
         return;
     }
     SkString filename(skipOverSkGr[testIndex - 166].filename);
     TestResult::Test(dirIndex, filename.c_str(), kCompareBits, reporter->verbose());
     TestResult::Test(dirIndex, filename.c_str(), kEncodeFiles, reporter->verbose());
 }