jdk8-mips64-public/hotspot: src/share/vm/memory/threadLocalAllocBuffer.hpp@c760f78e0a53

7003125: precompiled.hpp is included when precompiled headers are not used
Summary: Added an ifndef DONT_USE_PRECOMPILED_HEADER to precompiled.hpp. Set up DONT_USE_PRECOMPILED_HEADER when compiling with Sun Studio or when the user specifies USE_PRECOMPILED_HEADER=0. Fixed broken include dependencies.
Reviewed-by: coleenp, kvn

     1 /*

     2  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_HPP

    26 #define SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_HPP

    28 #include "gc_implementation/shared/gcUtil.hpp"

    29 #include "oops/typeArrayOop.hpp"

    30 #include "runtime/perfData.hpp"

    32 class GlobalTLABStats;

    34 // ThreadLocalAllocBuffer: a descriptor for thread-local storage used by

    35 // the threads for allocation.

    36 //            It is thread-private at any time, but maybe multiplexed over

    37 //            time across multiple threads. The park()/unpark() pair is

    38 //            used to make it avaiable for such multiplexing.

    39 class ThreadLocalAllocBuffer: public CHeapObj {

    40   friend class VMStructs;

    41 private:

    42   HeapWord* _start;                              // address of TLAB

    43   HeapWord* _top;                                // address after last allocation

    44   HeapWord* _pf_top;                             // allocation prefetch watermark

    45   HeapWord* _end;                                // allocation end (excluding alignment_reserve)

    46   size_t    _desired_size;                       // desired size   (including alignment_reserve)

    47   size_t    _refill_waste_limit;                 // hold onto tlab if free() is larger than this

    49   static unsigned _target_refills;               // expected number of refills between GCs

    51   unsigned  _number_of_refills;

    52   unsigned  _fast_refill_waste;

    53   unsigned  _slow_refill_waste;

    54   unsigned  _gc_waste;

    55   unsigned  _slow_allocations;

    57   AdaptiveWeightedAverage _allocation_fraction;  // fraction of eden allocated in tlabs

    59   void accumulate_statistics();

    60   void initialize_statistics();

    62   void set_start(HeapWord* start)                { _start = start; }

    63   void set_end(HeapWord* end)                    { _end = end; }

    64   void set_top(HeapWord* top)                    { _top = top; }

    65   void set_pf_top(HeapWord* pf_top)              { _pf_top = pf_top; }

    66   void set_desired_size(size_t desired_size)     { _desired_size = desired_size; }

    67   void set_refill_waste_limit(size_t waste)      { _refill_waste_limit = waste;  }

    69   size_t initial_refill_waste_limit()            { return desired_size() / TLABRefillWasteFraction; }

    71   static int    target_refills()                 { return _target_refills; }

    72   size_t initial_desired_size();

    74   size_t remaining() const                       { return end() == NULL ? 0 : pointer_delta(hard_end(), top()); }

    76   // Make parsable and release it.

    77   void reset();

    79   // Resize based on amount of allocation, etc.

    80   void resize();

    82   void invariants() const { assert(top() >= start() && top() <= end(), "invalid tlab"); }

    84   void initialize(HeapWord* start, HeapWord* top, HeapWord* end);

    86   void print_stats(const char* tag);

    88   Thread* myThread();

    90   // statistics

    92   int number_of_refills() const { return _number_of_refills; }

    93   int fast_refill_waste() const { return _fast_refill_waste; }

    94   int slow_refill_waste() const { return _slow_refill_waste; }

    95   int gc_waste() const          { return _gc_waste; }

    96   int slow_allocations() const  { return _slow_allocations; }

    98   static GlobalTLABStats* _global_stats;

    99   static GlobalTLABStats* global_stats() { return _global_stats; }

   101 public:

   102   ThreadLocalAllocBuffer() : _allocation_fraction(TLABAllocationWeight) {

   103     // do nothing.  tlabs must be inited by initialize() calls

   104   }

   106   static const size_t min_size()                 { return align_object_size(MinTLABSize / HeapWordSize); }

   107   static const size_t max_size();

   109   HeapWord* start() const                        { return _start; }

   110   HeapWord* end() const                          { return _end; }

   111   HeapWord* hard_end() const                     { return _end + alignment_reserve(); }

   112   HeapWord* top() const                          { return _top; }

   113   HeapWord* pf_top() const                       { return _pf_top; }

   114   size_t desired_size() const                    { return _desired_size; }

   115   size_t free() const                            { return pointer_delta(end(), top()); }

   116   // Don't discard tlab if remaining space is larger than this.

   117   size_t refill_waste_limit() const              { return _refill_waste_limit; }

   119   // Allocate size HeapWords. The memory is NOT initialized to zero.

   120   inline HeapWord* allocate(size_t size);

   122   // Reserve space at the end of TLAB

   123   static size_t end_reserve() {

   124     int reserve_size = typeArrayOopDesc::header_size(T_INT);

   125     if (AllocatePrefetchStyle == 3) {

   126       // BIS is used to prefetch - we need a space for it.

   127       // +1 for rounding up to next cache line +1 to be safe

   128       int lines = AllocatePrefetchLines + 2;

   129       int step_size = AllocatePrefetchStepSize;

   130       int distance = AllocatePrefetchDistance;

   131       int prefetch_end = (distance + step_size*lines)/(int)HeapWordSize;

   132       reserve_size = MAX2(reserve_size, prefetch_end);

   133     }

   134     return reserve_size;

   135   }

   136   static size_t alignment_reserve()              { return align_object_size(end_reserve()); }

   137   static size_t alignment_reserve_in_bytes()     { return alignment_reserve() * HeapWordSize; }

   139   // Return tlab size or remaining space in eden such that the

   140   // space is large enough to hold obj_size and necessary fill space.

   141   // Otherwise return 0;

   142   inline size_t compute_size(size_t obj_size);

   144   // Record slow allocation

   145   inline void record_slow_allocation(size_t obj_size);

   147   // Initialization at startup

   148   static void startup_initialization();

   150   // Make an in-use tlab parsable, optionally also retiring it.

   151   void make_parsable(bool retire);

   153   // Retire in-use tlab before allocation of a new tlab

   154   void clear_before_allocation();

   156   // Accumulate statistics across all tlabs before gc

   157   static void accumulate_statistics_before_gc();

   159   // Resize tlabs for all threads

   160   static void resize_all_tlabs();

   162   void fill(HeapWord* start, HeapWord* top, size_t new_size);

   163   void initialize();

   165   static size_t refill_waste_limit_increment()   { return TLABWasteIncrement; }

   167   // Code generation support

   168   static ByteSize start_offset()                 { return byte_offset_of(ThreadLocalAllocBuffer, _start); }

   169   static ByteSize end_offset()                   { return byte_offset_of(ThreadLocalAllocBuffer, _end  ); }

   170   static ByteSize top_offset()                   { return byte_offset_of(ThreadLocalAllocBuffer, _top  ); }

   171   static ByteSize pf_top_offset()                { return byte_offset_of(ThreadLocalAllocBuffer, _pf_top  ); }

   172   static ByteSize size_offset()                  { return byte_offset_of(ThreadLocalAllocBuffer, _desired_size ); }

   173   static ByteSize refill_waste_limit_offset()    { return byte_offset_of(ThreadLocalAllocBuffer, _refill_waste_limit ); }

   175   static ByteSize number_of_refills_offset()     { return byte_offset_of(ThreadLocalAllocBuffer, _number_of_refills ); }

   176   static ByteSize fast_refill_waste_offset()     { return byte_offset_of(ThreadLocalAllocBuffer, _fast_refill_waste ); }

   177   static ByteSize slow_allocations_offset()      { return byte_offset_of(ThreadLocalAllocBuffer, _slow_allocations ); }

   179   void verify();

   180 };

   182 class GlobalTLABStats: public CHeapObj {

   183 private:

   185   // Accumulate perfdata in private variables because

   186   // PerfData should be write-only for security reasons

   187   // (see perfData.hpp)

   188   unsigned _allocating_threads;

   189   unsigned _total_refills;

   190   unsigned _max_refills;

   191   size_t   _total_allocation;

   192   size_t   _total_gc_waste;

   193   size_t   _max_gc_waste;

   194   size_t   _total_slow_refill_waste;

   195   size_t   _max_slow_refill_waste;

   196   size_t   _total_fast_refill_waste;

   197   size_t   _max_fast_refill_waste;

   198   unsigned _total_slow_allocations;

   199   unsigned _max_slow_allocations;

   201   PerfVariable* _perf_allocating_threads;

   202   PerfVariable* _perf_total_refills;

   203   PerfVariable* _perf_max_refills;

   204   PerfVariable* _perf_allocation;

   205   PerfVariable* _perf_gc_waste;

   206   PerfVariable* _perf_max_gc_waste;

   207   PerfVariable* _perf_slow_refill_waste;

   208   PerfVariable* _perf_max_slow_refill_waste;

   209   PerfVariable* _perf_fast_refill_waste;

   210   PerfVariable* _perf_max_fast_refill_waste;

   211   PerfVariable* _perf_slow_allocations;

   212   PerfVariable* _perf_max_slow_allocations;

   214   AdaptiveWeightedAverage _allocating_threads_avg;

   216 public:

   217   GlobalTLABStats();

   219   // Initialize all counters

   220   void initialize();

   222   // Write all perf counters to the perf_counters

   223   void publish();

   225   void print();

   227   // Accessors

   228   unsigned allocating_threads_avg() {

   229     return MAX2((unsigned)(_allocating_threads_avg.average() + 0.5), 1U);

   230   }

   232   size_t allocation() {

   233     return _total_allocation;

   234   }

   236   // Update methods

   238   void update_allocating_threads() {

   239     _allocating_threads++;

   240   }

   241   void update_number_of_refills(unsigned value) {

   242     _total_refills += value;

   243     _max_refills    = MAX2(_max_refills, value);

   244   }

   245   void update_allocation(size_t value) {

   246     _total_allocation += value;

   247   }

   248   void update_gc_waste(size_t value) {

   249     _total_gc_waste += value;

   250     _max_gc_waste    = MAX2(_max_gc_waste, value);

   251   }

   252   void update_fast_refill_waste(size_t value) {

   253     _total_fast_refill_waste += value;

   254     _max_fast_refill_waste    = MAX2(_max_fast_refill_waste, value);

   255   }

   256   void update_slow_refill_waste(size_t value) {

   257     _total_slow_refill_waste += value;

   258     _max_slow_refill_waste    = MAX2(_max_slow_refill_waste, value);

   259   }

   260   void update_slow_allocations(unsigned value) {

   261     _total_slow_allocations += value;

   262     _max_slow_allocations    = MAX2(_max_slow_allocations, value);

   263   }

   264 };

   266 #endif // SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/memory/threadLocalAllocBuffer.hpp@c760f78e0a53

src/share/vm/memory/threadLocalAllocBuffer.hpp