diff options
Diffstat (limited to 'runtime/gc/heap.h')
| -rw-r--r-- | runtime/gc/heap.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/runtime/gc/heap.h b/runtime/gc/heap.h index dac747b854..81476a4f8c 100644 --- a/runtime/gc/heap.h +++ b/runtime/gc/heap.h @@ -19,6 +19,7 @@ #include <iosfwd> #include <string> +#include <unordered_set> #include <vector> #include "allocator_type.h" @@ -180,7 +181,8 @@ class Heap { bool ignore_max_footprint, bool use_tlab, bool verify_pre_gc_heap, bool verify_pre_sweeping_heap, bool verify_post_gc_heap, bool verify_pre_gc_rosalloc, bool verify_pre_sweeping_rosalloc, - bool verify_post_gc_rosalloc, bool use_homogeneous_space_compaction, + bool verify_post_gc_rosalloc, bool gc_stress_mode, + bool use_homogeneous_space_compaction, uint64_t min_interval_homogeneous_space_compaction_by_oom); ~Heap(); @@ -887,6 +889,10 @@ class Heap { void UpdateGcCountRateHistograms() EXCLUSIVE_LOCKS_REQUIRED(gc_complete_lock_); + // GC stress mode attempts to do one GC per unique backtrace. + void CheckGcStressMode(Thread* self, mirror::Object** obj) + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); + // All-known continuous spaces, where objects lie within fixed bounds. std::vector<space::ContinuousSpace*> continuous_spaces_; @@ -1042,6 +1048,7 @@ class Heap { bool verify_pre_gc_rosalloc_; bool verify_pre_sweeping_rosalloc_; bool verify_post_gc_rosalloc_; + const bool gc_stress_mode_; // RAII that temporarily disables the rosalloc verification during // the zygote fork. @@ -1192,6 +1199,14 @@ class Heap { // The histogram of the number of blocking GC invocations per window duration. Histogram<uint64_t> blocking_gc_count_rate_histogram_ GUARDED_BY(gc_complete_lock_); + // GC stress related data structures. + Mutex* backtrace_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; + // Debugging variables, seen backtraces vs unique backtraces. + Atomic<uint64_t> seen_backtrace_count_; + Atomic<uint64_t> unique_backtrace_count_; + // Stack trace hashes that we already saw, + std::unordered_set<uint64_t> seen_backtraces_ GUARDED_BY(backtrace_lock_); + friend class CollectorTransitionTask; friend class collector::GarbageCollector; friend class collector::MarkCompact; |