Small change to move GrProcessor and GrBatch pools over to SkSpinlock

src/gpu/GrProcessor.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrProcessor.h"
 #include "GrContext.h"
 #include "GrCoordTransform.h"
 #include "GrGeometryProcessor.h"
 #include "GrInvariantOutput.h"
 #include "GrMemoryPool.h"
 #include "GrXferProcessor.h"
-#include "SkMutex.h"
+#include "SkSpinlock.h"
 
 #if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
 
 class GrFragmentProcessor;
 class GrGeometryProcessor;
 
 /*
  * Originally these were both in the processor unit test header, but then it seemed to cause linker
  * problems on android.
  */
@@ skipping 64 matching lines @@
         gMatrices[4].setRotate(SkIntToScalar(215));
         gMatrices[4].set(SkMatrix::kMPersp0, 0.00013f);
         gMatrices[4].set(SkMatrix::kMPersp1, -0.000039f);
         gOnce = true;
     }
     return gMatrices[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gMatrices)))];
 }
 }
 
 
-// We use a global pool protected by a mutex. Chrome may use the same GrContext on different
-// threads. The GrContext is not used concurrently on different threads and there is a memory
-// barrier between accesses of a context on different threads. Also, there may be multiple
+// We use a global pool protected by a mutex(spinlock). Chrome may use the same GrContext on
+// different threads. The GrContext is not used concurrently on different threads and there is a
+// memory barrier between accesses of a context on different threads. Also, there may be multiple
 // GrContexts and those contexts may be in use concurrently on different threads.
 namespace {
-SK_DECLARE_STATIC_MUTEX(gProcessorPoolMutex);
+SK_DECLARE_STATIC_SPINLOCK(gProcessorSpinlock);
 class MemoryPoolAccessor {
 public:
-    MemoryPoolAccessor() { gProcessorPoolMutex.acquire(); }
+    MemoryPoolAccessor() { gProcessorSpinlock.acquire(); }
 
-    ~MemoryPoolAccessor() { gProcessorPoolMutex.release(); }
+    ~MemoryPoolAccessor() { gProcessorSpinlock.release(); }
 
     GrMemoryPool* pool() const {
         static GrMemoryPool gPool(4096, 4096);
         return &gPool;
     }
 };
 }
 
 int32_t GrProcessor::gCurrProcessorClassID = GrProcessor::kIllegalProcessorClassID;
 
@@ skipping 49 matching lines @@
 
 void GrFragmentProcessor::computeInvariantOutput(GrInvariantOutput* inout) const {
     this->onComputeInvariantOutput(inout);
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 // Initial static variable from GrXPFactory
 int32_t GrXPFactory::gCurrXPFClassID =
         GrXPFactory::kIllegalXPFClassID;