1 #ifndef DMTask_DEFINED 2 #define DMTask_DEFINED 3 4 #include "DMGpuSupport.h" 5 #include "DMReporter.h" 6 #include "SkRunnable.h" 7 #include "SkTaskGroup.h" 8 #include "SkTime.h" 9 10 // DM will run() these tasks on one of two threadpools. 11 // Subclasses can call fail() to mark this task as failed, or make any number of spawnChild() calls 12 // to kick off dependent tasks. 13 // 14 // Tasks delete themselves when run. 15 16 namespace DM { 17 18 class TaskRunner; 19 20 class CpuTask; 21 22 class Task { 23 public: 24 virtual bool shouldSkip() const = 0; 25 virtual SkString name() const = 0; 26 27 // Returns the number of parents above this task. 28 // Top-level tasks return 0, their children 1, and so on. 29 int depth() const { return fDepth; } 30 31 protected: 32 Task(Reporter* reporter, TaskRunner* taskRunner); 33 Task(const Task& parent); 34 virtual ~Task(); 35 36 void start(); 37 void fail(const char* msg = NULL); 38 void finish(); 39 40 void reallySpawnChild(CpuTask* task); // For now we don't allow GPU child tasks. 41 42 private: 43 Reporter* fReporter; // Unowned. 44 TaskRunner* fTaskRunner; // Unowned. 45 int fDepth; 46 SkMSec fStart; 47 }; 48 49 class CpuTask : public Task, public SkRunnable { 50 public: 51 CpuTask(Reporter* reporter, TaskRunner* taskRunner); 52 CpuTask(const Task& parent); 53 virtual ~CpuTask() {} 54 55 void run() SK_OVERRIDE; 56 virtual void draw() = 0; 57 58 void spawnChild(CpuTask* task); 59 }; 60 61 class GpuTask : public Task { 62 public: 63 GpuTask(Reporter* reporter, TaskRunner* taskRunner); 64 virtual ~GpuTask() {} 65 66 void run(GrContextFactory*); 67 virtual void draw(GrContextFactory*) = 0; 68 69 void spawnChild(CpuTask* task); 70 }; 71 72 } // namespace DM 73 74 #endif // DMTask_DEFINED 75
