Skeleton of DM

dm/DMTask.cpp

+#include "DMTask.h"
+
+#include "DMTaskRunner.h"
+#include "DMUtil.h"
+#include "SkBitmap.h"
+#include "SkCommandLineFlags.h"
+
+namespace DM {
+
+Task::Task(Reporter* reporter, TaskRunner* taskRunner)
+    : fReporter(reporter), fTaskRunner(taskRunner) {
+    fReporter->start();
+}
+
+Task::Task(const Task& that) : fReporter(that.fReporter), fTaskRunner(that.fTaskRunner) {
+    fReporter->start();
+}
+
+Task::~Task() {}
+
+void Task::run() {
+    if (!this->shouldSkip()) {
+        this->draw();
+    }
+    fReporter->finish();
+    fReporter->updateStatusLine();
+    delete this;
+}
+
+void Task::spawnChild(Task* task) {
+    if (!task->usesGpu()) {
+        fTaskRunner->add(task);
+    } else {
+        SkDEBUGFAIL("Sorry, we can't spawn GPU tasks. :(  See comment in TaskRunner::wait().");
+    }
+}
+
+void Task::fail() {
+    fReporter->fail(this->name());
+}
+
+}  // namespace DM