1 /* 2 * Copyright 2014 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "GrProgramElement.h" 9 #include "GrGpuResourceRef.h" 10 11 uint32_t GrProgramElement::CreateUniqueID() { 12 static int32_t gUniqueID = SK_InvalidUniqueID; 13 uint32_t id; 14 do { 15 id = static_cast<uint32_t>(sk_atomic_inc(&gUniqueID) + 1); 16 } while (id == SK_InvalidUniqueID); 17 return id; 18 } 19 20 void GrProgramElement::convertRefToPendingExecution() const { 21 // This function makes it so that all the GrGpuResourceRefs own a single ref to their 22 // underlying GrGpuResource if there are any refs to the GrProgramElement and a single 23 // pending read/write if there are any pending executions of the GrProgramElement. The 24 // GrGpuResourceRef will give up its single ref and/or pending read/write in its destructor. 25 SkASSERT(fRefCnt > 0); 26 if (0 == fPendingExecutions) { 27 for (int i = 0; i < fGpuResources.count(); ++i) { 28 fGpuResources[i]->markPendingIO(); 29 } 30 } 31 ++fPendingExecutions; 32 this->unref(); 33 if (0 == fRefCnt) { 34 for (int i = 0; i < fGpuResources.count(); ++i) { 35 fGpuResources[i]->removeRef(); 36 } 37 } 38 } 39 40 void GrProgramElement::completedExecution() const { 41 this->validate(); 42 --fPendingExecutions; 43 if (0 == fPendingExecutions) { 44 if (0 == fRefCnt) { 45 SkDELETE(this); 46 } else { 47 // Now our pending executions have ocurred and we still have refs. Convert 48 // ownership of our resources back to regular refs. 49 for (int i = 0; i < fGpuResources.count(); ++i) { 50 fGpuResources[i]->pendingIOComplete(); 51 } 52 53 } 54 } 55 } 56
