skia2/dm/DMTask.h
commit-bot@chromium.org 39e8d93337 DM tweaks
- Don't print status updates for skipped tasks or count them as pending tasks.
 - Refactor DMReporter a bit for better symmetry, be more explicit about
   how we read atomics (that is, approximately) in printStatus() (née finish()).
 - Remove mutex locking from printStatus().

BUG=skia:
R=halcanary@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/309483003

git-svn-id: http://skia.googlecode.com/svn/trunk@14977 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-05-29 20:14:48 +00:00

74 lines
1.7 KiB
C++

#ifndef DMTask_DEFINED
#define DMTask_DEFINED
#include "DMReporter.h"
#include "DMGpuSupport.h"
#include "SkRunnable.h"
#include "SkTime.h"
// DM will run() these tasks on one of two threadpools.
// Subclasses can call fail() to mark this task as failed, or make any number of spawnChild() calls
// to kick off dependent tasks.
//
// Tasks delete themselves when run.
namespace DM {
class TaskRunner;
class CpuTask;
class Task {
public:
virtual bool shouldSkip() const = 0;
virtual SkString name() const = 0;
// Returns the number of parents above this task.
// Top-level tasks return 0, their children 1, and so on.
int depth() const { return fDepth; }
protected:
Task(Reporter* reporter, TaskRunner* taskRunner);
Task(const Task& parent);
virtual ~Task();
void start();
void fail(const char* msg = NULL);
void finish();
void spawnChildNext(CpuTask* task); // For now we don't allow GPU child tasks.
private:
Reporter* fReporter; // Unowned.
TaskRunner* fTaskRunner; // Unowned.
int fDepth;
SkMSec fStart;
};
class CpuTask : public Task, public SkRunnable {
public:
CpuTask(Reporter* reporter, TaskRunner* taskRunner);
CpuTask(const Task& parent);
virtual ~CpuTask() {}
void run() SK_OVERRIDE;
virtual void draw() = 0;
void spawnChild(CpuTask* task);
};
class GpuTask : public Task, public SkTRunnable<GrContextFactory> {
public:
GpuTask(Reporter* reporter, TaskRunner* taskRunner);
virtual ~GpuTask() {}
void run(GrContextFactory&) SK_OVERRIDE;
virtual void draw(GrContextFactory*) = 0;
void spawnChild(CpuTask* task);
};
} // namespace DM
#endif // DMTask_DEFINED