adding uniqueID to GrContext

src/gpu/GrContext.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrContext.h"
 
@@ skipping 74 matching lines @@
     }
 
     if (context->init(backend, backendContext)) {
         return context;
     } else {
         context->unref();
         return NULL;
     }
 }
 
-GrContext::GrContext(const Options& opts) : fOptions(opts) {
+static int32_t gNextID = 1;
+static int32_t next_id() {
+    int32_t id;
+    do {
+        id = sk_atomic_inc(&gNextID);
+    } while (id == SK_InvalidGenID);
+    return id;
+}
+
+GrContext::GrContext(const Options& opts) : fOptions(opts), fUniqueID(next_id()) {
     fGpu = NULL;
     fResourceCache = NULL;
     fResourceProvider = NULL;
     fPathRendererChain = NULL;
     fSoftwarePathRenderer = NULL;
     fBatchFontCache = NULL;
     fDrawBuffer = NULL;
     fDrawBufferVBAllocPool = NULL;
     fDrawBufferIBAllocPool = NULL;
     fFlushToReduceCacheSize = false;
@@ skipping 1786 matching lines @@
         fDrawBuffer->addGpuTraceMarker(marker);
     }
 }
 
 void GrContext::removeGpuTraceMarker(const GrGpuTraceMarker* marker) {
     fGpu->removeGpuTraceMarker(marker);
     if (fDrawBuffer) {
         fDrawBuffer->removeGpuTraceMarker(marker);
     }
 }