diff options
Diffstat (limited to 'runtime/gc/heap.cc')
| -rw-r--r-- | runtime/gc/heap.cc | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/runtime/gc/heap.cc b/runtime/gc/heap.cc index 07d0455..de7d0b8 100644 --- a/runtime/gc/heap.cc +++ b/runtime/gc/heap.cc @@ -88,7 +88,8 @@ static constexpr bool kCompactZygote = kMovingCollector; static constexpr size_t kNonMovingSpaceCapacity = 64 * MB; Heap::Heap(size_t initial_size, size_t growth_limit, size_t min_free, size_t max_free, - double target_utilization, size_t capacity, const std::string& image_file_name, + double target_utilization, double foreground_heap_growth_multiplier, size_t capacity, + const std::string& image_file_name, CollectorType foreground_collector_type, CollectorType background_collector_type, size_t parallel_gc_threads, size_t conc_gc_threads, bool low_memory_mode, size_t long_pause_log_threshold, size_t long_gc_log_threshold, @@ -154,6 +155,7 @@ Heap::Heap(size_t initial_size, size_t growth_limit, size_t min_free, size_t max min_free_(min_free), max_free_(max_free), target_utilization_(target_utilization), + foreground_heap_growth_multiplier_(foreground_heap_growth_multiplier), total_wait_time_(0), total_allocation_time_(0), verify_object_mode_(kVerifyObjectModeDisabled), @@ -2524,22 +2526,33 @@ collector::GarbageCollector* Heap::FindCollectorByGcType(collector::GcType gc_ty return nullptr; } +double Heap::HeapGrowthMultiplier() const { + // If we don't care about pause times we are background, so return 1.0. + if (!CareAboutPauseTimes() || IsLowMemoryMode()) { + return 1.0; + } + return foreground_heap_growth_multiplier_; +} + void Heap::GrowForUtilization(collector::GarbageCollector* collector_ran) { // We know what our utilization is at this moment. // This doesn't actually resize any memory. It just lets the heap grow more when necessary. - const size_t bytes_allocated = GetBytesAllocated(); + const uint64_t bytes_allocated = GetBytesAllocated(); last_gc_size_ = bytes_allocated; last_gc_time_ns_ = NanoTime(); - size_t target_size; + uint64_t target_size; collector::GcType gc_type = collector_ran->GetGcType(); if (gc_type != collector::kGcTypeSticky) { // Grow the heap for non sticky GC. - target_size = bytes_allocated / GetTargetHeapUtilization(); - if (target_size > bytes_allocated + max_free_) { - target_size = bytes_allocated + max_free_; - } else if (target_size < bytes_allocated + min_free_) { - target_size = bytes_allocated + min_free_; - } + const float multiplier = HeapGrowthMultiplier(); // Use the multiplier to grow more for + // foreground. + intptr_t delta = bytes_allocated / GetTargetHeapUtilization() - bytes_allocated; + CHECK_GE(delta, 0); + target_size = bytes_allocated + delta * multiplier; + target_size = std::min(target_size, + bytes_allocated + static_cast<uint64_t>(max_free_ * multiplier)); + target_size = std::max(target_size, + bytes_allocated + static_cast<uint64_t>(min_free_ * multiplier)); native_need_to_run_finalization_ = true; next_gc_type_ = collector::kGcTypeSticky; } else { @@ -2564,7 +2577,7 @@ void Heap::GrowForUtilization(collector::GarbageCollector* collector_ran) { if (bytes_allocated + max_free_ < max_allowed_footprint_) { target_size = bytes_allocated + max_free_; } else { - target_size = std::max(bytes_allocated, max_allowed_footprint_); + target_size = std::max(bytes_allocated, static_cast<uint64_t>(max_allowed_footprint_)); } } if (!ignore_max_footprint_) { @@ -2588,7 +2601,8 @@ void Heap::GrowForUtilization(collector::GarbageCollector* collector_ran) { // Start a concurrent GC when we get close to the estimated remaining bytes. When the // allocation rate is very high, remaining_bytes could tell us that we should start a GC // right away. - concurrent_start_bytes_ = std::max(max_allowed_footprint_ - remaining_bytes, bytes_allocated); + concurrent_start_bytes_ = std::max(max_allowed_footprint_ - remaining_bytes, + static_cast<size_t>(bytes_allocated)); } } } |