Index: src/heap/spaces.h |
diff --git a/src/heap/spaces.h b/src/heap/spaces.h |
index c035342bfa85058dd9be34024e17cbc6d5722be3..192f61a65d6bd13b48c4020b8303706c5133074f 100644 |
--- a/src/heap/spaces.h |
+++ b/src/heap/spaces.h |
@@ -234,7 +234,15 @@ class MemoryChunk { |
IN_TO_SPACE, // All pages in new space has one of these two set. |
NEW_SPACE_BELOW_AGE_MARK, |
EVACUATION_CANDIDATE, |
- NEVER_EVACUATE, // May contain immortal immutables. |
+ |
+ // |NEVER_EVACUATE|: A page tagged with this flag will never be selected |
+ // for evacuation. Typically used for immortal immovable pages. |
+ NEVER_EVACUATE, |
+ |
+ // |NEVER_SWEEP|: A page tagged with this flag will be ignored by the |
+ // sweeper. The memory will always be accounted for as allocated. Typically |
+ // used for immortal immovable pages. |
+ NEVER_SWEEP, |
// Large objects can have a progress bar in their page header. These object |
// are scanned in increments and will be kept black while being scanned. |
@@ -689,7 +697,7 @@ class Page : public MemoryChunk { |
// account. |
// TODO(hpayer): This limit should be way smaller but we currently have |
// short living objects >256K. |
- static const int kMaxRegularHeapObjectSize = 600 * KB; |
+ static const int kMaxRegularHeapObjectSize = 400 * KB; |
static inline Page* ConvertNewToOld(Page* old_page, PagedSpace* new_owner); |
@@ -1270,6 +1278,8 @@ class MemoryAllocator { |
intptr_t commit_area_size, |
Executability executable, Space* space); |
+ void ShrinkChunk(MemoryChunk* chunk, size_t bytes_to_shrink); |
+ |
Address ReserveAlignedMemory(size_t requested, size_t alignment, |
base::VirtualMemory* controller); |
Address AllocateAlignedMemory(size_t reserve_size, size_t commit_size, |
@@ -1575,6 +1585,7 @@ class AllocationStats BASE_EMBEDDED { |
capacity_ -= size_in_bytes; |
size_ -= size_in_bytes; |
CHECK_GE(size_, 0); |
+ CHECK_GE(capacity_, 0); |
} |
// Allocate from available bytes (available -> size). |
@@ -2140,6 +2151,10 @@ class PagedSpace : public Space { |
iterator begin() { return iterator(anchor_.next_page()); } |
iterator end() { return iterator(&anchor_); } |
+ // Shrink immortal immovable pages of the space to be exactly the size needed |
+ // using the high water mark. |
+ void ShrinkImmortalImmovablePages(); |
+ |
protected: |
// PagedSpaces that should be included in snapshots have different, i.e., |
// smaller, initial pages. |