MultiPictureDraw is taskgroup aware.

SampleApp is multipicturedraw aware.

BUG=skia:

Review URL: https://codereview.chromium.org/684923002

1 files changed, 39 insertions, 0 deletions

diff --git a/src/core/SkTaskGroup.h b/src/core/SkTaskGroup.h
new file mode 100644
index 0000000000..75443c37cb
--- /dev/null
+++ b/src/core/SkTaskGroup.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkTaskGroup_DEFINED
+#define SkTaskGroup_DEFINED
+
+#include "SkTypes.h"
+
+struct SkRunnable;
+
+class SkTaskGroup : SkNoncopyable {
+public:
+    // Create one of these in main() to enable SkTaskGroups globally.
+    struct Enabler : SkNoncopyable {
+        explicit Enabler(int threads = -1);  // Default is system-reported core count.
+        ~Enabler();
+    };
+
+    SkTaskGroup();
+    ~SkTaskGroup() { this->wait(); }
+
+    // Add a task to this SkTaskGroup.  It will likely run on another thread.
+    // Neither add() method takes owership of any of its parameters.
+    void add(SkRunnable*);
+    void add(void (*fn)(void*), void* arg);
+
+    // Block until all Tasks previously add()ed to this SkTaskGroup have run.
+    // You may safely reuse this SkTaskGroup after wait() returns.
+    void wait();
+
+private:
+    /*atomic*/ int32_t fPending;
+};
+
+#endif//SkTaskGroup_DEFINED