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src/hotspot/share/gc/shared/threadLocalAllocBuffer.hpp
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rev 48551 : [mq]: heap8
rev 48553 : [mq]: heap14_rebased
rev 48558 : [mq]: heap19
rev 48562 : [mq]: heap23
*** 49,62 ****
friend class JVMCIVMStructs;
private:
HeapWord* _start; // address of TLAB
HeapWord* _top; // address after last allocation
HeapWord* _pf_top; // allocation prefetch watermark
! HeapWord* _end; // allocation end (can be the sampling end point or
! // the actual TLAB end, excluding alignment_reserve)
! HeapWord* _actual_end; // allocation actual_end (actual TLAB end, excluding alignment_reserve)
! HeapWord* _slow_path_end; // remember the end in case a fast refill occurs.
size_t _desired_size; // desired size (including alignment_reserve)
size_t _refill_waste_limit; // hold onto tlab if free() is larger than this
size_t _allocated_before_last_gc; // total bytes allocated up until the last gc
size_t _bytes_until_sample; // bytes until sample.
--- 49,61 ----
friend class JVMCIVMStructs;
private:
HeapWord* _start; // address of TLAB
HeapWord* _top; // address after last allocation
HeapWord* _pf_top; // allocation prefetch watermark
! HeapWord* _current_end; // allocation end (can be the sampling end point or _allocation_end)
! HeapWord* _allocation_end; // end for allocations (actual TLAB end, excluding alignment_reserve)
! HeapWord* _last_slow_path_end; // last address for slow_path_end (as opposed to _allocation_end)
size_t _desired_size; // desired size (including alignment_reserve)
size_t _refill_waste_limit; // hold onto tlab if free() is larger than this
size_t _allocated_before_last_gc; // total bytes allocated up until the last gc
size_t _bytes_until_sample; // bytes until sample.
*** 75,87 ****
void accumulate_statistics();
void initialize_statistics();
void set_start(HeapWord* start) { _start = start; }
! void set_end(HeapWord* end) { _end = end; }
! void set_actual_end(HeapWord* actual_end) { _actual_end = actual_end; }
! void set_slow_path_end(HeapWord* slow_path_end) { _slow_path_end = slow_path_end; }
void set_top(HeapWord* top) { _top = top; }
void set_pf_top(HeapWord* pf_top) { _pf_top = pf_top; }
void set_desired_size(size_t desired_size) { _desired_size = desired_size; }
void set_refill_waste_limit(size_t waste) { _refill_waste_limit = waste; }
void set_bytes_until_sample(size_t bytes) { _bytes_until_sample = bytes; }
--- 74,86 ----
void accumulate_statistics();
void initialize_statistics();
void set_start(HeapWord* start) { _start = start; }
! void set_current_end(HeapWord* current_end) { _current_end = current_end; }
! void set_allocation_end(HeapWord* ptr) { _allocation_end = ptr; }
! void set_last_slow_path_end(HeapWord* ptr) { _last_slow_path_end = ptr; }
void set_top(HeapWord* top) { _top = top; }
void set_pf_top(HeapWord* pf_top) { _pf_top = pf_top; }
void set_desired_size(size_t desired_size) { _desired_size = desired_size; }
void set_refill_waste_limit(size_t waste) { _refill_waste_limit = waste; }
void set_bytes_until_sample(size_t bytes) { _bytes_until_sample = bytes; }
*** 89,109 ****
size_t initial_refill_waste_limit() { return desired_size() / TLABRefillWasteFraction; }
static int target_refills() { return _target_refills; }
size_t initial_desired_size();
! size_t remaining() { return end() == NULL ? 0 : pointer_delta(hard_end(), top()); }
void set_sample_end();
// Make parsable and release it.
void reset();
// Resize based on amount of allocation, etc.
void resize();
! void invariants() const { assert(top() >= start() && top() <= end(), "invalid tlab"); }
void initialize(HeapWord* start, HeapWord* top, HeapWord* end);
void print_stats(const char* tag);
--- 88,109 ----
size_t initial_refill_waste_limit() { return desired_size() / TLABRefillWasteFraction; }
static int target_refills() { return _target_refills; }
size_t initial_desired_size();
! size_t remaining();
void set_sample_end();
+ void update_end_pointers();
// Make parsable and release it.
void reset();
// Resize based on amount of allocation, etc.
void resize();
! void invariants() const { assert(top() >= start() && top() <= current_end(), "invalid tlab"); }
void initialize(HeapWord* start, HeapWord* top, HeapWord* end);
void print_stats(const char* tag);
*** 129,146 ****
static size_t max_size() { assert(_max_size != 0, "max_size not set up"); return _max_size; }
static size_t max_size_in_bytes() { return max_size() * BytesPerWord; }
static void set_max_size(size_t max_size) { _max_size = max_size; }
HeapWord* start() const { return _start; }
! HeapWord* end() const { return _end; }
HeapWord* top() const { return _top; }
! HeapWord* hard_end();
HeapWord* pf_top() const { return _pf_top; }
size_t desired_size() const { return _desired_size; }
size_t used() const { return pointer_delta(top(), start()); }
size_t used_bytes() const { return pointer_delta(top(), start(), 1); }
! size_t free() const { return pointer_delta(end(), top()); }
// Don't discard tlab if remaining space is larger than this.
size_t refill_waste_limit() const { return _refill_waste_limit; }
// Allocate size HeapWords. The memory is NOT initialized to zero.
inline HeapWord* allocate(size_t size);
--- 129,146 ----
static size_t max_size() { assert(_max_size != 0, "max_size not set up"); return _max_size; }
static size_t max_size_in_bytes() { return max_size() * BytesPerWord; }
static void set_max_size(size_t max_size) { _max_size = max_size; }
HeapWord* start() const { return _start; }
! HeapWord* current_end() const { return _current_end; }
HeapWord* top() const { return _top; }
! HeapWord* reserved_end();
HeapWord* pf_top() const { return _pf_top; }
size_t desired_size() const { return _desired_size; }
size_t used() const { return pointer_delta(top(), start()); }
size_t used_bytes() const { return pointer_delta(top(), start(), 1); }
! size_t free() const { return pointer_delta(current_end(), top()); }
// Don't discard tlab if remaining space is larger than this.
size_t refill_waste_limit() const { return _refill_waste_limit; }
// Allocate size HeapWords. The memory is NOT initialized to zero.
inline HeapWord* allocate(size_t size);
*** 178,196 ****
void fill(HeapWord* start, HeapWord* top, size_t new_size);
void initialize();
void pick_next_sample(size_t diff = 0);
! void set_back_actual_end();
! void handle_sample(Thread* thread, HeapWord* result, size_t size);
bool should_sample() { return _bytes_until_sample == 0; }
static size_t refill_waste_limit_increment() { return TLABWasteIncrement; }
// Code generation support
static ByteSize start_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _start); }
! static ByteSize end_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _end ); }
static ByteSize top_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _top ); }
static ByteSize pf_top_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _pf_top ); }
static ByteSize size_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _desired_size ); }
static ByteSize refill_waste_limit_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _refill_waste_limit ); }
--- 178,197 ----
void fill(HeapWord* start, HeapWord* top, size_t new_size);
void initialize();
void pick_next_sample(size_t diff = 0);
! void set_back_allocation_end();
! void update_tlab_sample_point(size_t size_in_bytes);
! void handle_sample(Thread* thread, HeapWord* result, size_t size_in_bytes);
bool should_sample() { return _bytes_until_sample == 0; }
static size_t refill_waste_limit_increment() { return TLABWasteIncrement; }
// Code generation support
static ByteSize start_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _start); }
! static ByteSize current_end_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _current_end ); }
static ByteSize top_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _top ); }
static ByteSize pf_top_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _pf_top ); }
static ByteSize size_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _desired_size ); }
static ByteSize refill_waste_limit_offset() { return byte_offset_of(ThreadLocalAllocBuffer, _refill_waste_limit ); }
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