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LibJS: Do a garbage collection every N allocations (N=10'000)

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To prevent the heap from growing infinitely large, we now do a full GC
every 10'000 allocations. :^)
This commit is contained in:
Andreas Kling 2020-04-06 12:36:49 +02:00
parent c7b4b5fe00
commit 9aaf19f4de
2 changed files with 10 additions and 1 deletions
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8
Libraries/LibJS/Heap/Heap.cpp
View file

@ -58,8 +58,14 @@ Heap::~Heap()
Cell* Heap::allocate_cell(size_t size) Cell* Heap::allocate_cell(size_t size)
{ {
if (should_collect_on_every_allocation()) if (should_collect_on_every_allocation()) {
collect_garbage(); collect_garbage();
} else if (m_allocations_since_last_gc > m_max_allocations_between_gc) {
m_allocations_since_last_gc = 0;
collect_garbage();
} else {
++m_allocations_since_last_gc;
}
for (auto& block : m_blocks) { for (auto& block : m_blocks) {
if (size > block->cell_size()) if (size > block->cell_size())

3
Libraries/LibJS/Heap/Heap.h
View file

@ -78,6 +78,9 @@ private:
Cell* cell_from_possible_pointer(FlatPtr); Cell* cell_from_possible_pointer(FlatPtr);
size_t m_max_allocations_between_gc { 10000 };
size_t m_allocations_since_last_gc { false };
bool m_should_collect_on_every_allocation { false }; bool m_should_collect_on_every_allocation { false };
Interpreter& m_interpreter; Interpreter& m_interpreter;