Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(416)

Unified Diff: src/heap/spaces.h

Issue 1555553002: [profiler] Implement POC Sampling Heap Profiler (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: remove unused variable Created 4 years, 11 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « src/heap/incremental-marking.h ('k') | src/isolate.cc » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index 19708dcb782315ab9ce2974137db96e86bf0601a..0d924dc014e381a977f2c723607db94a01d4ae6d 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -20,6 +20,7 @@ namespace v8 {
namespace internal {
class CompactionSpaceCollection;
+class InlineAllocationObserver;
class Isolate;
// -----------------------------------------------------------------------------
@@ -2567,54 +2568,6 @@ class NewSpacePageIterator BASE_EMBEDDED {
NewSpacePage* last_page_;
};
-// -----------------------------------------------------------------------------
-// Allows observation of inline allocation in the new space.
-class InlineAllocationObserver {
- public:
- explicit InlineAllocationObserver(intptr_t step_size)
- : step_size_(step_size), bytes_to_next_step_(step_size) {
- DCHECK(step_size >= kPointerSize);
- }
- virtual ~InlineAllocationObserver() {}
-
- private:
- intptr_t step_size() const { return step_size_; }
- intptr_t bytes_to_next_step() const { return bytes_to_next_step_; }
-
- // Pure virtual method provided by the subclasses that gets called when at
- // least step_size bytes have been allocated. soon_object is the address just
- // allocated (but not yet initialized.) size is the size of the object as
- // requested (i.e. w/o the alignment fillers). Some complexities to be aware
- // of:
- // 1) soon_object will be nullptr in cases where we end up observing an
- // allocation that happens to be a filler space (e.g. page boundaries.)
- // 2) size is the requested size at the time of allocation. Right-trimming
- // may change the object size dynamically.
- // 3) soon_object may actually be the first object in an allocation-folding
- // group. In such a case size is the size of the group rather than the
- // first object.
- virtual void Step(int bytes_allocated, Address soon_object, size_t size) = 0;
-
- // Called each time the new space does an inline allocation step. This may be
- // more frequently than the step_size we are monitoring (e.g. when there are
- // multiple observers, or when page or space boundary is encountered.)
- void InlineAllocationStep(int bytes_allocated, Address soon_object,
- size_t size) {
- bytes_to_next_step_ -= bytes_allocated;
- if (bytes_to_next_step_ <= 0) {
- Step(static_cast<int>(step_size_ - bytes_to_next_step_), soon_object,
- size);
- bytes_to_next_step_ = step_size_;
- }
- }
-
- intptr_t step_size_;
- intptr_t bytes_to_next_step_;
-
- friend class NewSpace;
-
- DISALLOW_COPY_AND_ASSIGN(InlineAllocationObserver);
-};
// -----------------------------------------------------------------------------
// The young generation space.
« no previous file with comments | « src/heap/incremental-marking.h ('k') | src/isolate.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698