resubmit https://code.google.com/p/skia/source/detail?r=7883 (in the meantime we added capability to collect minidump and callstack if buildbot fails with heap coruption in windows. a few minor conflicts have been resolved)

Review URL: https://codereview.chromium.org/12840004

git-svn-id: http://skia.googlecode.com/svn/trunk@8233 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 15 insertions, 7 deletions

diff --git a/src/pdf/SkPDFTypes.cpp b/src/pdf/SkPDFTypes.cpp
index d479a22432..ed02d2bd12 100644
--- a/src/pdf/SkPDFTypes.cpp
+++ b/src/pdf/SkPDFTypes.cpp
@@ -41,7 +41,8 @@ size_t SkPDFObject::getOutputSize(SkPDFCatalog* catalog, bool indirect) {
     return buffer.getOffset();
 }
 
-void SkPDFObject::getResources(SkTDArray<SkPDFObject*>* resourceList) {}
+void SkPDFObject::getResources(const SkTSet<SkPDFObject*>& knownResourceObjects,
+                               SkTSet<SkPDFObject*>* newResourceObjects) {}
 
 void SkPDFObject::emitIndirectObject(SkWStream* stream, SkPDFCatalog* catalog) {
     catalog->emitObjectNumber(stream, this);
@@ -61,14 +62,21 @@ void SkPDFObject::AddResourceHelper(SkPDFObject* resource,
     resource->ref();
 }
 
-void SkPDFObject::GetResourcesHelper(SkTDArray<SkPDFObject*>* resources,
-                                     SkTDArray<SkPDFObject*>* result) {
+void SkPDFObject::GetResourcesHelper(
+        const SkTDArray<SkPDFObject*>* resources,
+        const SkTSet<SkPDFObject*>& knownResourceObjects,
+        SkTSet<SkPDFObject*>* newResourceObjects) {
     if (resources->count()) {
-        result->setReserve(result->count() + resources->count());
+        newResourceObjects->setReserve(
+            newResourceObjects->count() + resources->count());
         for (int i = 0; i < resources->count(); i++) {
-            result->push((*resources)[i]);
-            (*resources)[i]->ref();
-            (*resources)[i]->getResources(result);
+            if (!knownResourceObjects.contains((*resources)[i]) &&
+                    !newResourceObjects->contains((*resources)[i])) {
+                newResourceObjects->add((*resources)[i]);
+                (*resources)[i]->ref();
+                (*resources)[i]->getResources(knownResourceObjects,
+                                              newResourceObjects);
+            }
         }
     }
 }