jdk8-mips64-public/hotspot: src/share/vm/runtime/fprofiler.cpp@98cb887364d3 (annotated)

src/share/vm/runtime/fprofiler.cpp@98cb887364d3 (annotated)

src/share/vm/runtime/fprofiler.cpp

Fri, 27 Feb 2009 13:27:09 -0800

author: twisti
date: Fri, 27 Feb 2009 13:27:09 -0800
changeset 1040: 98cb887364d3
parent 631: d1605aabd0a1
child 1907: c18cbe5936b8
permissions: -rw-r--r--

6810672: Comment typos
Summary: I have collected some typos I have found while looking at the code.
Reviewed-by: kvn, never

 /*
  * Copyright 1997-2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 # include "incls/_precompiled.incl"
 # include "incls/_fprofiler.cpp.incl"
 // Static fields of FlatProfiler
 int               FlatProfiler::received_gc_ticks   = 0;
 int               FlatProfiler::vm_operation_ticks  = 0;
 int               FlatProfiler::threads_lock_ticks  = 0;
 int               FlatProfiler::class_loader_ticks  = 0;
 int               FlatProfiler::extra_ticks         = 0;
 int               FlatProfiler::blocked_ticks       = 0;
 int               FlatProfiler::deopt_ticks         = 0;
 int               FlatProfiler::unknown_ticks       = 0;
 int               FlatProfiler::interpreter_ticks   = 0;
 int               FlatProfiler::compiler_ticks      = 0;
 int               FlatProfiler::received_ticks      = 0;
 int               FlatProfiler::delivered_ticks     = 0;
 int*              FlatProfiler::bytecode_ticks      = NULL;
 int*              FlatProfiler::bytecode_ticks_stub = NULL;
 int               FlatProfiler::all_int_ticks       = 0;
 int               FlatProfiler::all_comp_ticks      = 0;
 int               FlatProfiler::all_ticks           = 0;
 bool              FlatProfiler::full_profile_flag   = false;
 ThreadProfiler*   FlatProfiler::thread_profiler     = NULL;
 ThreadProfiler*   FlatProfiler::vm_thread_profiler  = NULL;
 FlatProfilerTask* FlatProfiler::task                = NULL;
 elapsedTimer      FlatProfiler::timer;
 int               FlatProfiler::interval_ticks_previous = 0;
 IntervalData*     FlatProfiler::interval_data       = NULL;
 ThreadProfiler::ThreadProfiler() {
   // Space for the ProfilerNodes
   const int area_size = 1 * ProfilerNodeSize * 1024;
   area_bottom = AllocateHeap(area_size, "fprofiler");
   area_top    = area_bottom;
   area_limit  = area_bottom + area_size;
   // ProfilerNode pointer table
   table = NEW_C_HEAP_ARRAY(ProfilerNode*, table_size);
   initialize();
   engaged = false;
 }
 ThreadProfiler::~ThreadProfiler() {
   FreeHeap(area_bottom);
   area_bottom = NULL;
   area_top = NULL;
   area_limit = NULL;
   FreeHeap(table);
   table = NULL;
 }
 // Statics for ThreadProfiler
 int ThreadProfiler::table_size = 1024;
 int ThreadProfiler::entry(int  value) {
   value = (value > 0) ? value : -value;
   return value % table_size;
 }
 ThreadProfilerMark::ThreadProfilerMark(ThreadProfilerMark::Region r) {
   _r = r;
   _pp = NULL;
   assert(((r > ThreadProfilerMark::noRegion) && (r < ThreadProfilerMark::maxRegion)), "ThreadProfilerMark::Region out of bounds");
   Thread* tp = Thread::current();
   if (tp != NULL && tp->is_Java_thread()) {
     JavaThread* jtp = (JavaThread*) tp;
     ThreadProfiler* pp = jtp->get_thread_profiler();
     _pp = pp;
     if (pp != NULL) {
       pp->region_flag[r] = true;
     }
   }
 }
 ThreadProfilerMark::~ThreadProfilerMark() {
   if (_pp != NULL) {
     _pp->region_flag[_r] = false;
   }
   _pp = NULL;
 }
 // Random other statics
 static const int col1 = 2;      // position of output column 1
 static const int col2 = 11;     // position of output column 2
 static const int col3 = 25;     // position of output column 3
 static const int col4 = 55;     // position of output column 4
 // Used for detailed profiling of nmethods.
 class PCRecorder : AllStatic {
  private:
   static int*    counters;
   static address base;
   enum {
    bucket_size = 16
   };
   static int     index_for(address pc) { return (pc - base)/bucket_size;   }
   static address pc_for(int index)     { return base + (index * bucket_size); }
   static int     size() {
     return ((int)CodeCache::max_capacity())/bucket_size * BytesPerWord;
   }
  public:
   static address bucket_start_for(address pc) {
     if (counters == NULL) return NULL;
     return pc_for(index_for(pc));
   }
   static int bucket_count_for(address pc)  { return counters[index_for(pc)]; }
   static void init();
   static void record(address pc);
   static void print();
   static void print_blobs(CodeBlob* cb);
 };
 int*    PCRecorder::counters = NULL;
 address PCRecorder::base     = NULL;
 void PCRecorder::init() {
   MutexLockerEx lm(CodeCache_lock, Mutex::_no_safepoint_check_flag);
   int s = size();
   counters = NEW_C_HEAP_ARRAY(int, s);
   for (int index = 0; index < s; index++) {
     counters[index] = 0;
   }
   base = CodeCache::first_address();
 }
 void PCRecorder::record(address pc) {
   if (counters == NULL) return;
   assert(CodeCache::contains(pc), "must be in CodeCache");
   counters[index_for(pc)]++;
 }
 address FlatProfiler::bucket_start_for(address pc) {
   return PCRecorder::bucket_start_for(pc);
 }
 int FlatProfiler::bucket_count_for(address pc) {
   return PCRecorder::bucket_count_for(pc);
 }
 void PCRecorder::print() {
   if (counters == NULL) return;
   tty->cr();
   tty->print_cr("Printing compiled methods with PC buckets having more than %d ticks", ProfilerPCTickThreshold);
   tty->print_cr("===================================================================");
   tty->cr();
   GrowableArray<CodeBlob*>* candidates = new GrowableArray<CodeBlob*>(20);
   int s;
   {
     MutexLockerEx lm(CodeCache_lock, Mutex::_no_safepoint_check_flag);
     s = size();
   }
   for (int index = 0; index < s; index++) {
     int count = counters[index];
     if (count > ProfilerPCTickThreshold) {
       address pc = pc_for(index);
       CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
       if (cb != NULL && candidates->find(cb) < 0) {
         candidates->push(cb);
       }
     }
   }
   for (int i = 0; i < candidates->length(); i++) {
     print_blobs(candidates->at(i));
   }
 }
 void PCRecorder::print_blobs(CodeBlob* cb) {
   if (cb != NULL) {
     cb->print();
     if (cb->is_nmethod()) {
       ((nmethod*)cb)->print_code();
     }
     tty->cr();
   } else {
     tty->print_cr("stub code");
   }
 }
 class tick_counter {            // holds tick info for one node
  public:
   int ticks_in_code;
   int ticks_in_native;
   tick_counter()                     {  ticks_in_code = ticks_in_native = 0; }
   tick_counter(int code, int native) {  ticks_in_code = code; ticks_in_native = native; }
   int total() const {
     return (ticks_in_code + ticks_in_native);
   }
   void add(tick_counter* a) {
     ticks_in_code += a->ticks_in_code;
     ticks_in_native += a->ticks_in_native;
   }
   void update(TickPosition where) {
     switch(where) {
       case tp_code:     ticks_in_code++;       break;
       case tp_native:   ticks_in_native++;      break;
     }
   }
   void print_code(outputStream* st, int total_ticks) {
     st->print("%5.1f%% %5d ", total() * 100.0 / total_ticks, ticks_in_code);
   }
   void print_native(outputStream* st) {
     st->print(" + %5d ", ticks_in_native);
   }
 };
 class ProfilerNode {
  private:
   ProfilerNode* _next;
  public:
   tick_counter ticks;
  public:
   void* operator new(size_t size, ThreadProfiler* tp);
   void  operator delete(void* p);
   ProfilerNode() {
     _next = NULL;
   }
   virtual ~ProfilerNode() {
     if (_next)
       delete _next;
   }
   void set_next(ProfilerNode* n) { _next = n; }
   ProfilerNode* next()           { return _next; }
   void update(TickPosition where) { ticks.update(where);}
   int total_ticks() { return ticks.total(); }
   virtual bool is_interpreted() const { return false; }
   virtual bool is_compiled()    const { return false; }
   virtual bool is_stub()        const { return false; }
   virtual bool is_runtime_stub() const{ return false; }
   virtual void oops_do(OopClosure* f) = 0;
   virtual bool interpreted_match(methodOop m) const { return false; }
   virtual bool compiled_match(methodOop m ) const { return false; }
   virtual bool stub_match(methodOop m, const char* name) const { return false; }
   virtual bool adapter_match() const { return false; }
   virtual bool runtimeStub_match(const CodeBlob* stub, const char* name) const { return false; }
   virtual bool unknown_compiled_match(const CodeBlob* cb) const { return false; }
   static void print_title(outputStream* st) {
     st->print(" + native");
     st->fill_to(col3);
     st->print("Method");
     st->fill_to(col4);
     st->cr();
   }
   static void print_total(outputStream* st, tick_counter* t, int total, const char* msg) {
     t->print_code(st, total);
     st->fill_to(col2);
     t->print_native(st);
     st->fill_to(col3);
     st->print(msg);
     st->cr();
   }
   virtual methodOop method()         = 0;
   virtual void print_method_on(outputStream* st) {
     int limit;
     int i;
     methodOop m = method();
     symbolOop k = m->klass_name();
     // Print the class name with dots instead of slashes
     limit = k->utf8_length();
     for (i = 0 ; i < limit ; i += 1) {
       char c = (char) k->byte_at(i);
       if (c == '/') {
         c = '.';
       }
       st->print("%c", c);
     }
     if (limit > 0) {
       st->print(".");
     }
     symbolOop n = m->name();
     limit = n->utf8_length();
     for (i = 0 ; i < limit ; i += 1) {
       char c = (char) n->byte_at(i);
       st->print("%c", c);
     }
     if( Verbose ) {
       // Disambiguate overloaded methods
       symbolOop sig = m->signature();
       sig->print_symbol_on(st);
     }
   }
   virtual void print(outputStream* st, int total_ticks) {
     ticks.print_code(st, total_ticks);
     st->fill_to(col2);
     ticks.print_native(st);
     st->fill_to(col3);
     print_method_on(st);
     st->cr();
   }
   // for hashing into the table
   static int hash(methodOop method) {
       // The point here is to try to make something fairly unique
       // out of the fields we can read without grabbing any locks
       // since the method may be locked when we need the hash.
       return (
           method->code_size() ^
           method->max_stack() ^
           method->max_locals() ^
           method->size_of_parameters());
   }
   // for sorting
   static int compare(ProfilerNode** a, ProfilerNode** b) {
     return (*b)->total_ticks() - (*a)->total_ticks();
   }
 };
 void* ProfilerNode::operator new(size_t size, ThreadProfiler* tp){
   void* result = (void*) tp->area_top;
   tp->area_top += size;
   if (tp->area_top > tp->area_limit) {
     fatal("flat profiler buffer overflow");
   }
   return result;
 }
 void ProfilerNode::operator delete(void* p){
 }
 class interpretedNode : public ProfilerNode {
  private:
    methodOop _method;
  public:
    interpretedNode(methodOop method, TickPosition where) : ProfilerNode() {
      _method = method;
      update(where);
    }
    bool is_interpreted() const { return true; }
    bool interpreted_match(methodOop m) const {
       return _method == m;
    }
    void oops_do(OopClosure* f) {
      f->do_oop((oop*)&_method);
    }
    methodOop method() { return _method; }
    static void print_title(outputStream* st) {
      st->fill_to(col1);
      st->print("%11s", "Interpreted");
      ProfilerNode::print_title(st);
    }
    void print(outputStream* st, int total_ticks) {
      ProfilerNode::print(st, total_ticks);
    }
    void print_method_on(outputStream* st) {
      ProfilerNode::print_method_on(st);
      if (Verbose) method()->invocation_counter()->print_short();
    }
 };
 class compiledNode : public ProfilerNode {
  private:
    methodOop _method;
  public:
    compiledNode(methodOop method, TickPosition where) : ProfilerNode() {
      _method = method;
      update(where);
   }
   bool is_compiled()    const { return true; }
   bool compiled_match(methodOop m) const {
     return _method == m;
   }
   methodOop method()         { return _method; }
   void oops_do(OopClosure* f) {
     f->do_oop((oop*)&_method);
   }
   static void print_title(outputStream* st) {
     st->fill_to(col1);
     st->print("%11s", "Compiled");
     ProfilerNode::print_title(st);
   }
   void print(outputStream* st, int total_ticks) {
     ProfilerNode::print(st, total_ticks);
   }
   void print_method_on(outputStream* st) {
     ProfilerNode::print_method_on(st);
   }
 };
 class stubNode : public ProfilerNode {
  private:
   methodOop _method;
   const char* _symbol;   // The name of the nearest VM symbol (for +ProfileVM). Points to a unique string
  public:
    stubNode(methodOop method, const char* name, TickPosition where) : ProfilerNode() {
      _method = method;
      _symbol = name;
      update(where);
    }
    bool is_stub() const { return true; }
    bool stub_match(methodOop m, const char* name) const {
      return (_method == m) && (_symbol == name);
    }
    void oops_do(OopClosure* f) {
      f->do_oop((oop*)&_method);
    }
    methodOop method() { return _method; }
    static void print_title(outputStream* st) {
      st->fill_to(col1);
      st->print("%11s", "Stub");
      ProfilerNode::print_title(st);
    }
    void print(outputStream* st, int total_ticks) {
      ProfilerNode::print(st, total_ticks);
    }
    void print_method_on(outputStream* st) {
      ProfilerNode::print_method_on(st);
      print_symbol_on(st);
    }
   void print_symbol_on(outputStream* st) {
     if(_symbol) {
       st->print("  (%s)", _symbol);
     }
   }
 };
 class adapterNode : public ProfilerNode {
  public:
    adapterNode(TickPosition where) : ProfilerNode() {
      update(where);
   }
   bool is_compiled()    const { return true; }
   bool adapter_match() const { return true; }
   methodOop method()         { return NULL; }
   void oops_do(OopClosure* f) {
     ;
   }
   void print(outputStream* st, int total_ticks) {
     ProfilerNode::print(st, total_ticks);
   }
   void print_method_on(outputStream* st) {
     st->print("%s", "adapters");
   }
 };
 class runtimeStubNode : public ProfilerNode {
  private:
    const CodeBlob* _stub;
   const char* _symbol;     // The name of the nearest VM symbol when ProfileVM is on. Points to a unique string.
  public:
    runtimeStubNode(const CodeBlob* stub, const char* name, TickPosition where) : ProfilerNode(), _stub(stub),  _symbol(name) {
      assert(stub->is_runtime_stub(), "wrong code blob");
      update(where);
    }
   bool is_runtime_stub() const { return true; }
   bool runtimeStub_match(const CodeBlob* stub, const char* name) const {
     assert(stub->is_runtime_stub(), "wrong code blob");
     return ((RuntimeStub*)_stub)->entry_point() == ((RuntimeStub*)stub)->entry_point() &&
             (_symbol == name);
   }
   methodOop method() { return NULL; }
   static void print_title(outputStream* st) {
     st->fill_to(col1);
     st->print("%11s", "Runtime stub");
     ProfilerNode::print_title(st);
   }
   void oops_do(OopClosure* f) {
     ;
   }
   void print(outputStream* st, int total_ticks) {
     ProfilerNode::print(st, total_ticks);
   }
   void print_method_on(outputStream* st) {
     st->print("%s", ((RuntimeStub*)_stub)->name());
     print_symbol_on(st);
   }
   void print_symbol_on(outputStream* st) {
     if(_symbol) {
       st->print("  (%s)", _symbol);
     }
   }
 };
 class unknown_compiledNode : public ProfilerNode {
  const char *_name;
  public:
    unknown_compiledNode(const CodeBlob* cb, TickPosition where) : ProfilerNode() {
      if ( cb->is_buffer_blob() )
        _name = ((BufferBlob*)cb)->name();
      else
        _name = ((SingletonBlob*)cb)->name();
      update(where);
   }
   bool is_compiled()    const { return true; }
   bool unknown_compiled_match(const CodeBlob* cb) const {
      if ( cb->is_buffer_blob() )
        return !strcmp(((BufferBlob*)cb)->name(), _name);
      else
        return !strcmp(((SingletonBlob*)cb)->name(), _name);
   }
   methodOop method()         { return NULL; }
   void oops_do(OopClosure* f) {
     ;
   }
   void print(outputStream* st, int total_ticks) {
     ProfilerNode::print(st, total_ticks);
   }
   void print_method_on(outputStream* st) {
     st->print("%s", _name);
   }
 };
 class vmNode : public ProfilerNode {
  private:
   const char* _name; // "optional" name obtained by os means such as dll lookup
  public:
   vmNode(const TickPosition where) : ProfilerNode() {
     _name = NULL;
     update(where);
   }
   vmNode(const char* name, const TickPosition where) : ProfilerNode() {
     _name = name;
     update(where);
   }
   const char *name()    const { return _name; }
   bool is_compiled()    const { return true; }
   bool vm_match(const char* name) const { return strcmp(name, _name) == 0; }
   methodOop method()          { return NULL; }
   static int hash(const char* name){
     // Compute a simple hash
     const char* cp = name;
     int h = 0;
     if(name != NULL){
       while(*cp != '\0'){
         h = (h << 1) ^ *cp;
         cp++;
       }
     }
     return h;
   }
   void oops_do(OopClosure* f) {
     ;
   }
   void print(outputStream* st, int total_ticks) {
     ProfilerNode::print(st, total_ticks);
   }
   void print_method_on(outputStream* st) {
     if(_name==NULL){
       st->print("%s", "unknown code");
     }
     else {
       st->print("%s", _name);
     }
   }
 };
 void ThreadProfiler::interpreted_update(methodOop method, TickPosition where) {
   int index = entry(ProfilerNode::hash(method));
   if (!table[index]) {
     table[index] = new (this) interpretedNode(method, where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (node->interpreted_match(method)) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) interpretedNode(method, where));
   }
 }
 void ThreadProfiler::compiled_update(methodOop method, TickPosition where) {
   int index = entry(ProfilerNode::hash(method));
   if (!table[index]) {
     table[index] = new (this) compiledNode(method, where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (node->compiled_match(method)) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) compiledNode(method, where));
   }
 }
 void ThreadProfiler::stub_update(methodOop method, const char* name, TickPosition where) {
   int index = entry(ProfilerNode::hash(method));
   if (!table[index]) {
     table[index] = new (this) stubNode(method, name, where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (node->stub_match(method, name)) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) stubNode(method, name, where));
   }
 }
 void ThreadProfiler::adapter_update(TickPosition where) {
   int index = 0;
   if (!table[index]) {
     table[index] = new (this) adapterNode(where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (node->adapter_match()) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) adapterNode(where));
   }
 }
 void ThreadProfiler::runtime_stub_update(const CodeBlob* stub, const char* name, TickPosition where) {
   int index = 0;
   if (!table[index]) {
     table[index] = new (this) runtimeStubNode(stub, name, where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (node->runtimeStub_match(stub, name)) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) runtimeStubNode(stub, name, where));
   }
 }
 void ThreadProfiler::unknown_compiled_update(const CodeBlob* cb, TickPosition where) {
   int index = 0;
   if (!table[index]) {
     table[index] = new (this) unknown_compiledNode(cb, where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (node->unknown_compiled_match(cb)) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) unknown_compiledNode(cb, where));
   }
 }
 void ThreadProfiler::vm_update(TickPosition where) {
   vm_update(NULL, where);
 }
 void ThreadProfiler::vm_update(const char* name, TickPosition where) {
   int index = entry(vmNode::hash(name));
   assert(index >= 0, "Must be positive");
   // Note that we call strdup below since the symbol may be resource allocated
   if (!table[index]) {
     table[index] = new (this) vmNode(os::strdup(name), where);
   } else {
     ProfilerNode* prev = table[index];
     for(ProfilerNode* node = prev; node; node = node->next()) {
       if (((vmNode *)node)->vm_match(name)) {
         node->update(where);
         return;
       }
       prev = node;
     }
     prev->set_next(new (this) vmNode(os::strdup(name), where));
   }
 }
 class FlatProfilerTask : public PeriodicTask {
 public:
   FlatProfilerTask(int interval_time) : PeriodicTask(interval_time) {}
   void task();
 };
 void FlatProfiler::record_vm_operation() {
   if (Universe::heap()->is_gc_active()) {
     FlatProfiler::received_gc_ticks += 1;
     return;
   }
   if (DeoptimizationMarker::is_active()) {
     FlatProfiler::deopt_ticks += 1;
     return;
   }
   FlatProfiler::vm_operation_ticks += 1;
 }
 void FlatProfiler::record_vm_tick() {
   // Profile the VM Thread itself if needed
   // This is done without getting the Threads_lock and we can go deep
   // inside Safepoint, etc.
   if( ProfileVM  ) {
     ResourceMark rm;
     ExtendedPC epc;
     const char *name = NULL;
     char buf[256];
     buf[0] = '\0';
     vm_thread_profiler->inc_thread_ticks();
     // Get a snapshot of a current VMThread pc (and leave it running!)
     // The call may fail if, for instance the VM thread is interrupted while
     // holding the Interrupt_lock or for other reasons.
     epc = os::get_thread_pc(VMThread::vm_thread());
     if(epc.pc() != NULL) {
       if (os::dll_address_to_function_name(epc.pc(), buf, sizeof(buf), NULL)) {
          name = buf;
       }
     }
     if (name != NULL) {
       vm_thread_profiler->vm_update(name, tp_native);
     }
   }
 }
 void FlatProfiler::record_thread_ticks() {
   int maxthreads, suspendedthreadcount;
   JavaThread** threadsList;
   bool interval_expired = false;
   if (ProfileIntervals &&
       (FlatProfiler::received_ticks >= interval_ticks_previous + ProfileIntervalsTicks)) {
     interval_expired = true;
     interval_ticks_previous = FlatProfiler::received_ticks;
   }
   // Try not to wait for the Threads_lock
   if (Threads_lock->try_lock()) {
     {  // Threads_lock scope
       maxthreads = Threads::number_of_threads();
       threadsList = NEW_C_HEAP_ARRAY(JavaThread *, maxthreads);
       suspendedthreadcount = 0;
       for (JavaThread* tp = Threads::first(); tp != NULL; tp = tp->next()) {
         if (tp->is_Compiler_thread()) {
           // Only record ticks for active compiler threads
           CompilerThread* cthread = (CompilerThread*)tp;
           if (cthread->task() != NULL) {
             // The compiler is active.  If we need to access any of the fields
             // of the compiler task we should suspend the CompilerThread first.
             FlatProfiler::compiler_ticks += 1;
             continue;
           }
         }
         // First externally suspend all threads by marking each for
         // external suspension - so it will stop at its next transition
         // Then do a safepoint
         ThreadProfiler* pp = tp->get_thread_profiler();
         if (pp != NULL && pp->engaged) {
           MutexLockerEx ml(tp->SR_lock(), Mutex::_no_safepoint_check_flag);
           if (!tp->is_external_suspend() && !tp->is_exiting()) {
             tp->set_external_suspend();
             threadsList[suspendedthreadcount++] = tp;
           }
         }
       }
       Threads_lock->unlock();
     }
     // Suspend each thread. This call should just return
     // for any threads that have already self-suspended
     // Net result should be one safepoint
     for (int j = 0; j < suspendedthreadcount; j++) {
       JavaThread *tp = threadsList[j];
       if (tp) {
         tp->java_suspend();
       }
     }
     // We are responsible for resuming any thread on this list
     for (int i = 0; i < suspendedthreadcount; i++) {
       JavaThread *tp = threadsList[i];
       if (tp) {
         ThreadProfiler* pp = tp->get_thread_profiler();
         if (pp != NULL && pp->engaged) {
           HandleMark hm;
           FlatProfiler::delivered_ticks += 1;
           if (interval_expired) {
           FlatProfiler::interval_record_thread(pp);
           }
           // This is the place where we check to see if a user thread is
           // blocked waiting for compilation.
           if (tp->blocked_on_compilation()) {
             pp->compiler_ticks += 1;
             pp->interval_data_ref()->inc_compiling();
           } else {
             pp->record_tick(tp);
           }
         }
         MutexLocker ml(Threads_lock);
         tp->java_resume();
       }
     }
     if (interval_expired) {
       FlatProfiler::interval_print();
       FlatProfiler::interval_reset();
     }
   } else {
     // Couldn't get the threads lock, just record that rather than blocking
     FlatProfiler::threads_lock_ticks += 1;
   }
 }
 void FlatProfilerTask::task() {
   FlatProfiler::received_ticks += 1;
   if (ProfileVM) {
     FlatProfiler::record_vm_tick();
   }
   VM_Operation* op = VMThread::vm_operation();
   if (op != NULL) {
     FlatProfiler::record_vm_operation();
     if (SafepointSynchronize::is_at_safepoint()) {
       return;
     }
   }
   FlatProfiler::record_thread_ticks();
 }
 void ThreadProfiler::record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks) {
   FlatProfiler::all_int_ticks++;
   if (!FlatProfiler::full_profile()) {
     return;
   }
   if (!fr.is_interpreted_frame_valid(thread)) {
     // tick came at a bad time
     interpreter_ticks += 1;
     FlatProfiler::interpreter_ticks += 1;
     return;
   }
   // The frame has been fully validated so we can trust the method and bci
   methodOop method = *fr.interpreter_frame_method_addr();
   interpreted_update(method, where);
   // update byte code table
   InterpreterCodelet* desc = Interpreter::codelet_containing(fr.pc());
   if (desc != NULL && desc->bytecode() >= 0) {
     ticks[desc->bytecode()]++;
   }
 }
 void ThreadProfiler::record_compiled_tick(JavaThread* thread, frame fr, TickPosition where) {
   const char *name = NULL;
   TickPosition localwhere = where;
   FlatProfiler::all_comp_ticks++;
   if (!FlatProfiler::full_profile()) return;
   CodeBlob* cb = fr.cb();
 // For runtime stubs, record as native rather than as compiled
    if (cb->is_runtime_stub()) {
         RegisterMap map(thread, false);
         fr = fr.sender(&map);
         cb = fr.cb();
         localwhere = tp_native;
   }
   methodOop method = (cb->is_nmethod()) ? ((nmethod *)cb)->method() :
                                           (methodOop)NULL;
   if (method == NULL) {
     if (cb->is_runtime_stub())
       runtime_stub_update(cb, name, localwhere);
     else
       unknown_compiled_update(cb, localwhere);
   }
   else {
     if (method->is_native()) {
       stub_update(method, name, localwhere);
     } else {
       compiled_update(method, localwhere);
     }
   }
 }
 extern "C" void find(int x);
 void ThreadProfiler::record_tick_for_running_frame(JavaThread* thread, frame fr) {
   // The tick happened in real code -> non VM code
   if (fr.is_interpreted_frame()) {
     interval_data_ref()->inc_interpreted();
     record_interpreted_tick(thread, fr, tp_code, FlatProfiler::bytecode_ticks);
     return;
   }
   if (CodeCache::contains(fr.pc())) {
     interval_data_ref()->inc_compiled();
     PCRecorder::record(fr.pc());
     record_compiled_tick(thread, fr, tp_code);
     return;
   }
   if (VtableStubs::stub_containing(fr.pc()) != NULL) {
     unknown_ticks_array[ut_vtable_stubs] += 1;
     return;
   }
   frame caller = fr.profile_find_Java_sender_frame(thread);
   if (caller.sp() != NULL && caller.pc() != NULL) {
     record_tick_for_calling_frame(thread, caller);
     return;
   }
   unknown_ticks_array[ut_running_frame] += 1;
   FlatProfiler::unknown_ticks += 1;
 }
 void ThreadProfiler::record_tick_for_calling_frame(JavaThread* thread, frame fr) {
   // The tick happened in VM code
   interval_data_ref()->inc_native();
   if (fr.is_interpreted_frame()) {
     record_interpreted_tick(thread, fr, tp_native, FlatProfiler::bytecode_ticks_stub);
     return;
   }
   if (CodeCache::contains(fr.pc())) {
     record_compiled_tick(thread, fr, tp_native);
     return;
   }
   frame caller = fr.profile_find_Java_sender_frame(thread);
   if (caller.sp() != NULL && caller.pc() != NULL) {
     record_tick_for_calling_frame(thread, caller);
     return;
   }
   unknown_ticks_array[ut_calling_frame] += 1;
   FlatProfiler::unknown_ticks += 1;
 }
 void ThreadProfiler::record_tick(JavaThread* thread) {
   FlatProfiler::all_ticks++;
   thread_ticks += 1;
   // Here's another way to track global state changes.
   // When the class loader starts it marks the ThreadProfiler to tell it it is in the class loader
   // and we check that here.
   // This is more direct, and more than one thread can be in the class loader at a time,
   // but it does mean the class loader has to know about the profiler.
   if (region_flag[ThreadProfilerMark::classLoaderRegion]) {
     class_loader_ticks += 1;
     FlatProfiler::class_loader_ticks += 1;
     return;
   } else if (region_flag[ThreadProfilerMark::extraRegion]) {
     extra_ticks += 1;
     FlatProfiler::extra_ticks += 1;
     return;
   }
   // Note that the WatcherThread can now stop for safepoints
   uint32_t debug_bits = 0;
   if (!thread->wait_for_ext_suspend_completion(SuspendRetryCount,
       SuspendRetryDelay, &debug_bits)) {
     unknown_ticks_array[ut_unknown_thread_state] += 1;
     FlatProfiler::unknown_ticks += 1;
     return;
   }
   frame fr;
   switch (thread->thread_state()) {
   case _thread_in_native:
   case _thread_in_native_trans:
   case _thread_in_vm:
   case _thread_in_vm_trans:
     if (thread->profile_last_Java_frame(&fr)) {
       if (fr.is_runtime_frame()) {
         RegisterMap map(thread, false);
         fr = fr.sender(&map);
       }
       record_tick_for_calling_frame(thread, fr);
     } else {
       unknown_ticks_array[ut_no_last_Java_frame] += 1;
       FlatProfiler::unknown_ticks += 1;
     }
     break;
   // handle_special_runtime_exit_condition self-suspends threads in Java
   case _thread_in_Java:
   case _thread_in_Java_trans:
     if (thread->profile_last_Java_frame(&fr)) {
       if (fr.is_safepoint_blob_frame()) {
         RegisterMap map(thread, false);
         fr = fr.sender(&map);
       }
       record_tick_for_running_frame(thread, fr);
     } else {
       unknown_ticks_array[ut_no_last_Java_frame] += 1;
       FlatProfiler::unknown_ticks += 1;
     }
     break;
   case _thread_blocked:
   case _thread_blocked_trans:
     if (thread->osthread() && thread->osthread()->get_state() == RUNNABLE) {
         if (thread->profile_last_Java_frame(&fr)) {
           if (fr.is_safepoint_blob_frame()) {
             RegisterMap map(thread, false);
             fr = fr.sender(&map);
             record_tick_for_running_frame(thread, fr);
           } else {
             record_tick_for_calling_frame(thread, fr);
           }
         } else {
           unknown_ticks_array[ut_no_last_Java_frame] += 1;
           FlatProfiler::unknown_ticks += 1;
         }
     } else {
           blocked_ticks += 1;
           FlatProfiler::blocked_ticks += 1;
     }
     break;
   case _thread_uninitialized:
   case _thread_new:
   // not used, included for completeness
   case _thread_new_trans:
      unknown_ticks_array[ut_no_last_Java_frame] += 1;
      FlatProfiler::unknown_ticks += 1;
      break;
   default:
     unknown_ticks_array[ut_unknown_thread_state] += 1;
     FlatProfiler::unknown_ticks += 1;
     break;
   }
   return;
 }
 void ThreadProfiler::engage() {
   engaged = true;
   timer.start();
 }
 void ThreadProfiler::disengage() {
   engaged = false;
   timer.stop();
 }
 void ThreadProfiler::initialize() {
   for (int index = 0; index < table_size; index++) {
     table[index] = NULL;
   }
   thread_ticks = 0;
   blocked_ticks = 0;
   compiler_ticks = 0;
   interpreter_ticks = 0;
   for (int ut = 0; ut < ut_end; ut += 1) {
     unknown_ticks_array[ut] = 0;
   }
   region_flag[ThreadProfilerMark::classLoaderRegion] = false;
   class_loader_ticks = 0;
   region_flag[ThreadProfilerMark::extraRegion] = false;
   extra_ticks = 0;
   timer.start();
   interval_data_ref()->reset();
 }
 void ThreadProfiler::reset() {
   timer.stop();
   if (table != NULL) {
     for (int index = 0; index < table_size; index++) {
       ProfilerNode* n = table[index];
       if (n != NULL) {
         delete n;
       }
     }
   }
   initialize();
 }
 void FlatProfiler::allocate_table() {
   { // Bytecode table
     bytecode_ticks      = NEW_C_HEAP_ARRAY(int, Bytecodes::number_of_codes);
     bytecode_ticks_stub = NEW_C_HEAP_ARRAY(int, Bytecodes::number_of_codes);
     for(int index = 0; index < Bytecodes::number_of_codes; index++) {
       bytecode_ticks[index]      = 0;
       bytecode_ticks_stub[index] = 0;
     }
   }
   if (ProfilerRecordPC) PCRecorder::init();
   interval_data         = NEW_C_HEAP_ARRAY(IntervalData, interval_print_size);
   FlatProfiler::interval_reset();
 }
 void FlatProfiler::engage(JavaThread* mainThread, bool fullProfile) {
   full_profile_flag = fullProfile;
   if (bytecode_ticks == NULL) {
     allocate_table();
   }
   if(ProfileVM && (vm_thread_profiler == NULL)){
     vm_thread_profiler = new ThreadProfiler();
   }
   if (task == NULL) {
     task = new FlatProfilerTask(WatcherThread::delay_interval);
     task->enroll();
   }
   timer.start();
   if (mainThread != NULL) {
     // When mainThread was created, it might not have a ThreadProfiler
     ThreadProfiler* pp = mainThread->get_thread_profiler();
     if (pp == NULL) {
       mainThread->set_thread_profiler(new ThreadProfiler());
     } else {
       pp->reset();
     }
     mainThread->get_thread_profiler()->engage();
   }
   // This is where we would assign thread_profiler
   // if we wanted only one thread_profiler for all threads.
   thread_profiler = NULL;
 }
 void FlatProfiler::disengage() {
   if (!task) {
     return;
   }
   timer.stop();
   task->disenroll();
   delete task;
   task = NULL;
   if (thread_profiler != NULL) {
     thread_profiler->disengage();
   } else {
     MutexLocker tl(Threads_lock);
     for (JavaThread* tp = Threads::first(); tp != NULL; tp = tp->next()) {
       ThreadProfiler* pp = tp->get_thread_profiler();
       if (pp != NULL) {
         pp->disengage();
       }
     }
   }
 }
 void FlatProfiler::reset() {
   if (task) {
     disengage();
   }
   class_loader_ticks = 0;
   extra_ticks        = 0;
   received_gc_ticks  = 0;
   vm_operation_ticks = 0;
   compiler_ticks     = 0;
   deopt_ticks        = 0;
   interpreter_ticks  = 0;
   blocked_ticks      = 0;
   unknown_ticks      = 0;
   received_ticks     = 0;
   delivered_ticks    = 0;
   timer.stop();
 }
 bool FlatProfiler::is_active() {
   return task != NULL;
 }
 void FlatProfiler::print_byte_code_statistics() {
   GrowableArray <ProfilerNode*>* array = new GrowableArray<ProfilerNode*>(200);
   tty->print_cr(" Bytecode ticks:");
   for (int index = 0; index < Bytecodes::number_of_codes; index++) {
     if (FlatProfiler::bytecode_ticks[index] > 0 || FlatProfiler::bytecode_ticks_stub[index] > 0) {
       tty->print_cr("  %4d %4d = %s",
         FlatProfiler::bytecode_ticks[index],
         FlatProfiler::bytecode_ticks_stub[index],
         Bytecodes::name( (Bytecodes::Code) index));
     }
   }
   tty->cr();
 }
 void print_ticks(const char* title, int ticks, int total) {
   if (ticks > 0) {
     tty->print("%5.1f%% %5d", ticks * 100.0 / total, ticks);
     tty->fill_to(col3);
     tty->print("%s", title);
     tty->cr();
   }
 }
 void ThreadProfiler::print(const char* thread_name) {
   ResourceMark rm;
   MutexLocker ppl(ProfilePrint_lock);
   int index = 0; // Declared outside for loops for portability
   if (table == NULL) {
     return;
   }
   if (thread_ticks <= 0) {
     return;
   }
   const char* title = "too soon to tell";
   double secs = timer.seconds();
   GrowableArray <ProfilerNode*>* array = new GrowableArray<ProfilerNode*>(200);
   for(index = 0; index < table_size; index++) {
     for(ProfilerNode* node = table[index]; node; node = node->next())
       array->append(node);
   }
   array->sort(&ProfilerNode::compare);
   // compute total (sanity check)
   int active =
     class_loader_ticks +
     compiler_ticks +
     interpreter_ticks +
     unknown_ticks();
   for (index = 0; index < array->length(); index++) {
     active += array->at(index)->ticks.total();
   }
   int total = active + blocked_ticks;
   tty->cr();
   tty->print_cr("Flat profile of %3.2f secs (%d total ticks): %s", secs, total, thread_name);
   if (total != thread_ticks) {
     print_ticks("Lost ticks", thread_ticks-total, thread_ticks);
   }
   tty->cr();
   // print interpreted methods
   tick_counter interpreted_ticks;
   bool has_interpreted_ticks = false;
   int print_count = 0;
   for (index = 0; index < array->length(); index++) {
     ProfilerNode* n = array->at(index);
     if (n->is_interpreted()) {
       interpreted_ticks.add(&n->ticks);
       if (!has_interpreted_ticks) {
         interpretedNode::print_title(tty);
         has_interpreted_ticks = true;
       }
       if (print_count++ < ProfilerNumberOfInterpretedMethods) {
         n->print(tty, active);
       }
     }
   }
   if (has_interpreted_ticks) {
     if (print_count <= ProfilerNumberOfInterpretedMethods) {
       title = "Total interpreted";
     } else {
       title = "Total interpreted (including elided)";
     }
     interpretedNode::print_total(tty, &interpreted_ticks, active, title);
     tty->cr();
   }
   // print compiled methods
   tick_counter compiled_ticks;
   bool has_compiled_ticks = false;
   print_count = 0;
   for (index = 0; index < array->length(); index++) {
     ProfilerNode* n = array->at(index);
     if (n->is_compiled()) {
       compiled_ticks.add(&n->ticks);
       if (!has_compiled_ticks) {
         compiledNode::print_title(tty);
         has_compiled_ticks = true;
       }
       if (print_count++ < ProfilerNumberOfCompiledMethods) {
         n->print(tty, active);
       }
     }
   }
   if (has_compiled_ticks) {
     if (print_count <= ProfilerNumberOfCompiledMethods) {
       title = "Total compiled";
     } else {
       title = "Total compiled (including elided)";
     }
     compiledNode::print_total(tty, &compiled_ticks, active, title);
     tty->cr();
   }
   // print stub methods
   tick_counter stub_ticks;
   bool has_stub_ticks = false;
   print_count = 0;
   for (index = 0; index < array->length(); index++) {
     ProfilerNode* n = array->at(index);
     if (n->is_stub()) {
       stub_ticks.add(&n->ticks);
       if (!has_stub_ticks) {
         stubNode::print_title(tty);
         has_stub_ticks = true;
       }
       if (print_count++ < ProfilerNumberOfStubMethods) {
         n->print(tty, active);
       }
     }
   }
   if (has_stub_ticks) {
     if (print_count <= ProfilerNumberOfStubMethods) {
       title = "Total stub";
     } else {
       title = "Total stub (including elided)";
     }
     stubNode::print_total(tty, &stub_ticks, active, title);
     tty->cr();
   }
   // print runtime stubs
   tick_counter runtime_stub_ticks;
   bool has_runtime_stub_ticks = false;
   print_count = 0;
   for (index = 0; index < array->length(); index++) {
     ProfilerNode* n = array->at(index);
     if (n->is_runtime_stub()) {
       runtime_stub_ticks.add(&n->ticks);
       if (!has_runtime_stub_ticks) {
         runtimeStubNode::print_title(tty);
         has_runtime_stub_ticks = true;
       }
       if (print_count++ < ProfilerNumberOfRuntimeStubNodes) {
         n->print(tty, active);
       }
     }
   }
   if (has_runtime_stub_ticks) {
     if (print_count <= ProfilerNumberOfRuntimeStubNodes) {
       title = "Total runtime stubs";
     } else {
       title = "Total runtime stubs (including elided)";
     }
     runtimeStubNode::print_total(tty, &runtime_stub_ticks, active, title);
     tty->cr();
   }
   if (blocked_ticks + class_loader_ticks + interpreter_ticks + compiler_ticks + unknown_ticks() != 0) {
     tty->fill_to(col1);
     tty->print_cr("Thread-local ticks:");
     print_ticks("Blocked (of total)",  blocked_ticks,      total);
     print_ticks("Class loader",        class_loader_ticks, active);
     print_ticks("Extra",               extra_ticks,        active);
     print_ticks("Interpreter",         interpreter_ticks,  active);
     print_ticks("Compilation",         compiler_ticks,     active);
     print_ticks("Unknown: vtable stubs",  unknown_ticks_array[ut_vtable_stubs],         active);
     print_ticks("Unknown: null method",   unknown_ticks_array[ut_null_method],          active);
     print_ticks("Unknown: running frame", unknown_ticks_array[ut_running_frame],        active);
     print_ticks("Unknown: calling frame", unknown_ticks_array[ut_calling_frame],        active);
     print_ticks("Unknown: no pc",         unknown_ticks_array[ut_no_pc],                active);
     print_ticks("Unknown: no last frame", unknown_ticks_array[ut_no_last_Java_frame],   active);
     print_ticks("Unknown: thread_state",  unknown_ticks_array[ut_unknown_thread_state], active);
     tty->cr();
   }
   if (WizardMode) {
     tty->print_cr("Node area used: %dKb", (area_top - area_bottom) / 1024);
   }
   reset();
 }
 /*
 ThreadProfiler::print_unknown(){
   if (table == NULL) {
     return;
   }
   if (thread_ticks <= 0) {
     return;
   }
 } */
 void FlatProfiler::print(int unused) {
   ResourceMark rm;
   if (thread_profiler != NULL) {
     thread_profiler->print("All threads");
   } else {
     MutexLocker tl(Threads_lock);
     for (JavaThread* tp = Threads::first(); tp != NULL; tp = tp->next()) {
       ThreadProfiler* pp = tp->get_thread_profiler();
       if (pp != NULL) {
         pp->print(tp->get_thread_name());
       }
     }
   }
   if (ProfilerPrintByteCodeStatistics) {
     print_byte_code_statistics();
   }
   if (non_method_ticks() > 0) {
     tty->cr();
     tty->print_cr("Global summary of %3.2f seconds:", timer.seconds());
     print_ticks("Received ticks",      received_ticks,     received_ticks);
     print_ticks("Received GC ticks",   received_gc_ticks,  received_ticks);
     print_ticks("Compilation",         compiler_ticks,     received_ticks);
     print_ticks("Deoptimization",      deopt_ticks,        received_ticks);
     print_ticks("Other VM operations", vm_operation_ticks, received_ticks);
 #ifndef PRODUCT
     print_ticks("Blocked ticks",       blocked_ticks,      received_ticks);
     print_ticks("Threads_lock blocks", threads_lock_ticks, received_ticks);
     print_ticks("Delivered ticks",     delivered_ticks,    received_ticks);
     print_ticks("All ticks",           all_ticks,          received_ticks);
 #endif
     print_ticks("Class loader",        class_loader_ticks, received_ticks);
     print_ticks("Extra       ",        extra_ticks,        received_ticks);
     print_ticks("Interpreter",         interpreter_ticks,  received_ticks);
     print_ticks("Unknown code",        unknown_ticks,      received_ticks);
   }
   PCRecorder::print();
   if(ProfileVM){
     tty->cr();
     vm_thread_profiler->print("VM Thread");
   }
 }
 void IntervalData::print_header(outputStream* st) {
   st->print("i/c/n/g");
 }
 void IntervalData::print_data(outputStream* st) {
   st->print("%d/%d/%d/%d", interpreted(), compiled(), native(), compiling());
 }
 void FlatProfiler::interval_record_thread(ThreadProfiler* tp) {
   IntervalData id = tp->interval_data();
   int total = id.total();
   tp->interval_data_ref()->reset();
   // Insertion sort the data, if it's relevant.
   for (int i = 0; i < interval_print_size; i += 1) {
     if (total > interval_data[i].total()) {
       for (int j = interval_print_size - 1; j > i; j -= 1) {
         interval_data[j] = interval_data[j-1];
       }
       interval_data[i] = id;
       break;
     }
   }
 }
 void FlatProfiler::interval_print() {
   if ((interval_data[0].total() > 0)) {
     tty->stamp();
     tty->print("\t");
     IntervalData::print_header(tty);
     for (int i = 0; i < interval_print_size; i += 1) {
       if (interval_data[i].total() > 0) {
         tty->print("\t");
         interval_data[i].print_data(tty);
       }
     }
     tty->cr();
   }
 }
 void FlatProfiler::interval_reset() {
   for (int i = 0; i < interval_print_size; i += 1) {
     interval_data[i].reset();
   }
 }
 void ThreadProfiler::oops_do(OopClosure* f) {
   if (table == NULL) return;
   for(int index = 0; index < table_size; index++) {
     for(ProfilerNode* node = table[index]; node; node = node->next())
       node->oops_do(f);
   }
 }
 void FlatProfiler::oops_do(OopClosure* f) {
   if (thread_profiler != NULL) {
     thread_profiler->oops_do(f);
   } else {
     for (JavaThread* tp = Threads::first(); tp != NULL; tp = tp->next()) {
       ThreadProfiler* pp = tp->get_thread_profiler();
       if (pp != NULL) {
         pp->oops_do(f);
       }
     }
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/fprofiler.cpp@98cb887364d3 (annotated)

src/share/vm/runtime/fprofiler.cpp