jdk8-mips64-public/hotspot: src/share/vm/services/memBaseline.hpp@f42c10a3d4b1 (annotated)

src/share/vm/services/memBaseline.hpp@f42c10a3d4b1 (annotated)

src/share/vm/services/memBaseline.hpp

Mon, 31 Mar 2014 13:09:35 -0700

author: minqi
date: Mon, 31 Mar 2014 13:09:35 -0700
changeset 6535: f42c10a3d4b1
parent 4980: fbca7eaeac2e
child 6876: 710a3c8b516e
child 7074: 833b0f92429a
permissions: -rw-r--r--

7090324: gclog rotation via external tool
Summary: GC log rotation can be set via java command line, but customer sometime need to sync with OS level rotation setting.
Reviewed-by: sla, minqi, ehelin
Contributed-by: suenaga.yasumasa@lab.ntt.co.jp

 /*
  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_SERVICES_MEM_BASELINE_HPP
 #define SHARE_VM_SERVICES_MEM_BASELINE_HPP
 #include "memory/allocation.hpp"
 #include "runtime/mutex.hpp"
 #include "services/memPtr.hpp"
 #include "services/memSnapshot.hpp"
 // compare unsigned number
 #define UNSIGNED_COMPARE(a, b)  ((a > b) ? 1 : ((a == b) ? 0 : -1))
 /*
  * MallocCallsitePointer and VMCallsitePointer are used
  * to baseline memory blocks with their callsite information.
  * They are only available when detail tracking is turned
  * on.
  */
 /* baselined malloc record aggregated by callsite */
 class MallocCallsitePointer : public MemPointer {
  private:
   size_t    _count;   // number of malloc invocation from this callsite
   size_t    _amount;  // total amount of memory malloc-ed from this callsite
  public:
   MallocCallsitePointer() {
     _count = 0;
     _amount = 0;
   }
   MallocCallsitePointer(address pc) : MemPointer(pc) {
     _count = 0;
     _amount = 0;
   }
   MallocCallsitePointer& operator=(const MallocCallsitePointer& p) {
     MemPointer::operator=(p);
     _count = p.count();
     _amount = p.amount();
     return *this;
   }
   inline void inc(size_t size) {
     _count ++;
     _amount += size;
   };
   inline size_t count() const {
     return _count;
   }
   inline size_t amount() const {
     return _amount;
   }
 };
 // baselined virtual memory record aggregated by callsite
 class VMCallsitePointer : public MemPointer {
  private:
   size_t     _count;              // number of invocation from this callsite
   size_t     _reserved_amount;    // total reserved amount
   size_t     _committed_amount;   // total committed amount
  public:
   VMCallsitePointer() {
     _count = 0;
     _reserved_amount = 0;
     _committed_amount = 0;
   }
   VMCallsitePointer(address pc) : MemPointer(pc) {
     _count = 0;
     _reserved_amount = 0;
     _committed_amount = 0;
   }
   VMCallsitePointer& operator=(const VMCallsitePointer& p) {
     MemPointer::operator=(p);
     _count = p.count();
     _reserved_amount = p.reserved_amount();
     _committed_amount = p.committed_amount();
     return *this;
   }
   inline void inc(size_t reserved, size_t committed) {
     _count ++;
     _reserved_amount += reserved;
     _committed_amount += committed;
   }
   inline size_t count() const {
     return _count;
   }
   inline size_t reserved_amount() const {
     return _reserved_amount;
   }
   inline size_t committed_amount() const {
     return _committed_amount;
   }
 };
 // maps a memory type flag to readable name
 typedef struct _memType2Name {
   MEMFLAGS     _flag;
   const char*  _name;
 } MemType2Name;
 // This class aggregates malloc'd records by memory type
 class MallocMem VALUE_OBJ_CLASS_SPEC {
  private:
   MEMFLAGS       _type;
   size_t         _count;
   size_t         _amount;
  public:
   MallocMem() {
     _type = mtNone;
     _count = 0;
     _amount = 0;
   }
   MallocMem(MEMFLAGS flags) {
     assert(HAS_VALID_MEMORY_TYPE(flags), "no type");
     _type = FLAGS_TO_MEMORY_TYPE(flags);
     _count = 0;
     _amount = 0;
   }
   inline void set_type(MEMFLAGS flag) {
     _type = flag;
   }
   inline void clear() {
     _count = 0;
     _amount = 0;
     _type = mtNone;
   }
   MallocMem& operator=(const MallocMem& m) {
     assert(_type == m.type(), "different type");
     _count = m.count();
     _amount = m.amount();
     return *this;
   }
   inline void inc(size_t amt) {
     _amount += amt;
     _count ++;
   }
   inline void reduce(size_t amt) {
     assert(_amount >= amt, "Just check");
     _amount -= amt;
   }
   inline void overwrite_counter(size_t count) {
     _count = count;
   }
   inline MEMFLAGS type() const {
     return _type;
   }
   inline bool is_type(MEMFLAGS flags) const {
     return FLAGS_TO_MEMORY_TYPE(flags) == _type;
   }
   inline size_t count() const {
     return _count;
   }
   inline size_t amount() const {
     return _amount;
   }
 };
 // This class records live arena's memory usage
 class ArenaMem : public MallocMem {
  public:
   ArenaMem(MEMFLAGS typeflag): MallocMem(typeflag) {
   }
   ArenaMem() { }
 };
 // This class aggregates virtual memory by its memory type
 class VMMem VALUE_OBJ_CLASS_SPEC {
  private:
   MEMFLAGS       _type;
   size_t         _count;
   size_t         _reserved_amount;
   size_t         _committed_amount;
  public:
   VMMem() {
     _type = mtNone;
     _count = 0;
     _reserved_amount = 0;
     _committed_amount = 0;
   }
   VMMem(MEMFLAGS flags) {
     assert(HAS_VALID_MEMORY_TYPE(flags), "no type");
     _type = FLAGS_TO_MEMORY_TYPE(flags);
     _count = 0;
     _reserved_amount = 0;
     _committed_amount = 0;
   }
   inline void clear() {
     _type = mtNone;
     _count = 0;
     _reserved_amount = 0;
     _committed_amount = 0;
   }
   inline void set_type(MEMFLAGS flags) {
     _type = FLAGS_TO_MEMORY_TYPE(flags);
   }
   VMMem& operator=(const VMMem& m) {
     assert(_type == m.type(), "different type");
     _count = m.count();
     _reserved_amount = m.reserved_amount();
     _committed_amount = m.committed_amount();
     return *this;
   }
   inline MEMFLAGS type() const {
     return _type;
   }
   inline bool is_type(MEMFLAGS flags) const {
     return FLAGS_TO_MEMORY_TYPE(flags) == _type;
   }
   inline void inc(size_t reserved_amt, size_t committed_amt) {
     _reserved_amount += reserved_amt;
     _committed_amount += committed_amt;
     _count ++;
   }
   inline size_t count() const {
     return _count;
   }
   inline size_t reserved_amount() const {
     return _reserved_amount;
   }
   inline size_t committed_amount() const {
     return _committed_amount;
   }
 };
 #define NUMBER_OF_MEMORY_TYPE    (mt_number_of_types + 1)
 class BaselineReporter;
 class BaselineComparisonReporter;
 /*
  * This class baselines current memory snapshot.
  * A memory baseline summarizes memory usage by memory type,
  * aggregates memory usage by callsites when detail tracking
  * is on.
  */
 class MemBaseline VALUE_OBJ_CLASS_SPEC {
   friend class BaselineReporter;
   friend class BaselineComparisonReporter;
  private:
   // overall summaries
   size_t        _total_malloced;
   size_t        _total_vm_reserved;
   size_t        _total_vm_committed;
   size_t        _number_of_classes;
   size_t        _number_of_threads;
   // if it has properly baselined
   bool          _baselined;
   // we categorize memory into three categories within the memory type
   MallocMem     _malloc_data[NUMBER_OF_MEMORY_TYPE];
   VMMem         _vm_data[NUMBER_OF_MEMORY_TYPE];
   ArenaMem      _arena_data[NUMBER_OF_MEMORY_TYPE];
   // memory records that aggregate memory usage by callsites.
   // only available when detail tracking is on.
   MemPointerArray*  _malloc_cs;
   MemPointerArray*  _vm_cs;
   // virtual memory map
   MemPointerArray*  _vm_map;
  private:
   static MemType2Name  MemType2NameMap[NUMBER_OF_MEMORY_TYPE];
  private:
   // should not use copy constructor
   MemBaseline(MemBaseline& copy) { ShouldNotReachHere(); }
   // check and block at a safepoint
   static inline void check_safepoint(JavaThread* thr);
  public:
   // create a memory baseline
   MemBaseline();
   ~MemBaseline();
   inline bool baselined() const {
     return _baselined;
   }
   MemBaseline& operator=(const MemBaseline& other);
   // reset the baseline for reuse
   void clear();
   // baseline the snapshot
   bool baseline(MemSnapshot& snapshot, bool summary_only = true);
   bool baseline(const MemPointerArray* malloc_records,
                 const MemPointerArray* vm_records,
                 bool summary_only = true);
   // total malloc'd memory of specified memory type
   inline size_t malloc_amount(MEMFLAGS flag) const {
     return _malloc_data[flag2index(flag)].amount();
   }
   // number of malloc'd memory blocks of specified memory type
   inline size_t malloc_count(MEMFLAGS flag) const {
     return _malloc_data[flag2index(flag)].count();
   }
   // total memory used by arenas of specified memory type
   inline size_t arena_amount(MEMFLAGS flag) const {
     return _arena_data[flag2index(flag)].amount();
   }
   // number of arenas of specified memory type
   inline size_t arena_count(MEMFLAGS flag) const {
     return _arena_data[flag2index(flag)].count();
   }
   // total reserved memory of specified memory type
   inline size_t reserved_amount(MEMFLAGS flag) const {
     return _vm_data[flag2index(flag)].reserved_amount();
   }
   // total committed memory of specified memory type
   inline size_t committed_amount(MEMFLAGS flag) const {
     return _vm_data[flag2index(flag)].committed_amount();
   }
   // total memory (malloc'd + mmap'd + arena) of specified
   // memory type
   inline size_t total_amount(MEMFLAGS flag) const {
     int index = flag2index(flag);
     return _malloc_data[index].amount() +
            _vm_data[index].reserved_amount() +
            _arena_data[index].amount();
   }
   /* overall summaries */
   // total malloc'd memory in snapshot
   inline size_t total_malloc_amount() const {
     return _total_malloced;
   }
   // total mmap'd memory in snapshot
   inline size_t total_reserved_amount() const {
     return _total_vm_reserved;
   }
   // total committed memory in snapshot
   inline size_t total_committed_amount() const {
     return _total_vm_committed;
   }
   // number of loaded classes
   inline size_t number_of_classes() const {
     return _number_of_classes;
   }
   // number of running threads
   inline size_t number_of_threads() const {
     return _number_of_threads;
   }
   // lookup human readable name of a memory type
   static const char* type2name(MEMFLAGS type);
  private:
   // convert memory flag to the index to mapping table
   int         flag2index(MEMFLAGS flag) const;
   // reset baseline values
   void reset();
   // summarize the records in global snapshot
   bool baseline_malloc_summary(const MemPointerArray* malloc_records);
   bool baseline_vm_summary(const MemPointerArray* vm_records);
   bool baseline_malloc_details(const MemPointerArray* malloc_records);
   bool baseline_vm_details(const MemPointerArray* vm_records);
   // print a line of malloc'd memory aggregated by callsite
   void print_malloc_callsite(outputStream* st, address pc, size_t size,
     size_t count, int diff_amt, int diff_count) const;
   // print a line of mmap'd memory aggregated by callsite
   void print_vm_callsite(outputStream* st, address pc, size_t rsz,
     size_t csz, int diff_rsz, int diff_csz) const;
   // sorting functions for raw records
   static int malloc_sort_by_pc(const void* p1, const void* p2);
   static int malloc_sort_by_addr(const void* p1, const void* p2);
  private:
   // sorting functions for baselined records
   static int bl_malloc_sort_by_size(const void* p1, const void* p2);
   static int bl_vm_sort_by_size(const void* p1, const void* p2);
   static int bl_malloc_sort_by_pc(const void* p1, const void* p2);
   static int bl_vm_sort_by_pc(const void* p1, const void* p2);
 };
 #endif // SHARE_VM_SERVICES_MEM_BASELINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/services/memBaseline.hpp@f42c10a3d4b1 (annotated)

src/share/vm/services/memBaseline.hpp