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Unified Diff: vm/pages.cc

Issue 9791048: - Wire the stack frame iterator to use stack maps for traversing objects if there are stack maps in… (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/runtime/
Patch Set: Created 8 years, 8 months ago
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Index: vm/pages.cc
===================================================================
--- vm/pages.cc (revision 6294)
+++ vm/pages.cc (working copy)
@@ -49,6 +49,21 @@
}
+RawObject* HeapPage::FindObject(FindObjectVisitor* visitor) const {
+ uword obj_addr = first_object_start();
+ uword end_addr = top();
+ while (obj_addr < end_addr) {
+ RawObject* raw_obj = RawObject::FromAddr(obj_addr);
+ if (raw_obj->FindObject(visitor)) {
+ return raw_obj; // Found object, return it.
+ }
+ obj_addr += raw_obj->Size();
+ }
+ ASSERT(obj_addr == end_addr);
+ return Object::null();
+}
+
+
PageSpace::PageSpace(Heap* heap, intptr_t max_capacity, bool is_executable)
: freelist_(),
heap_(heap),
@@ -206,6 +221,29 @@
}
+RawObject* PageSpace::FindObject(FindObjectVisitor* visitor) const {
+ ASSERT(Isolate::Current()->no_gc_scope_depth() != 0);
+ HeapPage* page = pages_;
+ while (page != NULL) {
+ RawObject* obj = page->FindObject(visitor);
+ if (obj != Object::null()) {
+ return obj;
+ }
+ page = page->next();
+ }
+
+ page = large_pages_;
+ while (page != NULL) {
+ RawObject* obj = page->FindObject(visitor);
+ if (obj != Object::null()) {
+ return obj;
+ }
+ page = page->next();
+ }
+ return Object::null();
+}
+
+
void PageSpace::MarkSweep(bool invoke_api_callbacks) {
// MarkSweep is not reentrant. Make sure that is the case.
ASSERT(!sweeping_);
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