jdk8-mips64-public/hotspot: src/share/vm/runtime/simpleThresholdPolicy.hpp@b985cbb00e68 (annotated)

src/share/vm/runtime/simpleThresholdPolicy.hpp@b985cbb00e68 (annotated)

src/share/vm/runtime/simpleThresholdPolicy.hpp

Mon, 12 Aug 2019 18:30:40 +0300

author: apetushkov
date: Mon, 12 Aug 2019 18:30:40 +0300
changeset 9858: b985cbb00e68
parent 4037: da91efe96a93
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

 /*
  * Copyright (c) 2010, 2012, 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_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
 #define SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP
 #include "code/nmethod.hpp"
 #include "oops/methodData.hpp"
 #include "runtime/compilationPolicy.hpp"
 #include "utilities/globalDefinitions.hpp"
 class CompileTask;
 class CompileQueue;
 class SimpleThresholdPolicy : public CompilationPolicy {
   int _c1_count, _c2_count;
   // Check if the counter is big enough and set carry (effectively infinity).
   inline void set_carry_if_necessary(InvocationCounter *counter);
   // Set carry flags in the counters (in Method* and MDO).
   inline void handle_counter_overflow(Method* method);
   // Call and loop predicates determine whether a transition to a higher compilation
   // level should be performed (pointers to predicate functions are passed to common_TF().
   // Predicates also take compiler load into account.
   typedef bool (SimpleThresholdPolicy::*Predicate)(int i, int b, CompLevel cur_level);
   bool call_predicate(int i, int b, CompLevel cur_level);
   bool loop_predicate(int i, int b, CompLevel cur_level);
   // Common transition function. Given a predicate determines if a method should transition to another level.
   CompLevel common(Predicate p, Method* method, CompLevel cur_level);
   // Transition functions.
   // call_event determines if a method should be compiled at a different
   // level with a regular invocation entry.
   CompLevel call_event(Method* method, CompLevel cur_level);
   // loop_event checks if a method should be OSR compiled at a different
   // level.
   CompLevel loop_event(Method* method, CompLevel cur_level);
   void print_counters(const char* prefix, methodHandle mh);
 protected:
   int c1_count() const     { return _c1_count; }
   int c2_count() const     { return _c2_count; }
   void set_c1_count(int x) { _c1_count = x;    }
   void set_c2_count(int x) { _c2_count = x;    }
   enum EventType { CALL, LOOP, COMPILE, REMOVE_FROM_QUEUE, UPDATE_IN_QUEUE, REPROFILE, MAKE_NOT_ENTRANT };
   void print_event(EventType type, methodHandle mh, methodHandle imh, int bci, CompLevel level);
   // Print policy-specific information if necessary
   virtual void print_specific(EventType type, methodHandle mh, methodHandle imh, int bci, CompLevel level) { }
   // Check if the method can be compiled, change level if necessary
   void compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread);
   // Submit a given method for compilation
   virtual void submit_compile(methodHandle mh, int bci, CompLevel level, JavaThread* thread);
   // Simple methods are as good being compiled with C1 as C2.
   // This function tells if it's such a function.
   inline bool is_trivial(Method* method);
   // Predicate helpers are used by .*_predicate() methods as well as others.
   // They check the given counter values, multiplied by the scale against the thresholds.
   template<CompLevel level> static inline bool call_predicate_helper(int i, int b, double scale);
   template<CompLevel level> static inline bool loop_predicate_helper(int i, int b, double scale);
   // Get a compilation level for a given method.
   static CompLevel comp_level(Method* method) {
     nmethod *nm = method->code();
     if (nm != NULL && nm->is_in_use()) {
       return (CompLevel)nm->comp_level();
     }
     return CompLevel_none;
   }
   virtual void method_invocation_event(methodHandle method, methodHandle inlinee,
                                        CompLevel level, nmethod* nm, JavaThread* thread);
   virtual void method_back_branch_event(methodHandle method, methodHandle inlinee,
                                         int bci, CompLevel level, nmethod* nm, JavaThread* thread);
 public:
   SimpleThresholdPolicy() : _c1_count(0), _c2_count(0) { }
   virtual int compiler_count(CompLevel comp_level) {
     if (is_c1_compile(comp_level)) return c1_count();
     if (is_c2_compile(comp_level)) return c2_count();
     return 0;
   }
   virtual CompLevel initial_compile_level() { return MIN2((CompLevel)TieredStopAtLevel, CompLevel_initial_compile); }
   virtual void do_safepoint_work() { }
   virtual void delay_compilation(Method* method) { }
   virtual void disable_compilation(Method* method) { }
   virtual void reprofile(ScopeDesc* trap_scope, bool is_osr);
   virtual nmethod* event(methodHandle method, methodHandle inlinee,
                          int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread);
   // Select task is called by CompileBroker. We should return a task or NULL.
   virtual CompileTask* select_task(CompileQueue* compile_queue);
   // Tell the runtime if we think a given method is adequately profiled.
   virtual bool is_mature(Method* method);
   // Initialize: set compiler thread count
   virtual void initialize();
   virtual bool should_not_inline(ciEnv* env, ciMethod* callee) {
     return (env->comp_level() == CompLevel_limited_profile ||
             env->comp_level() == CompLevel_full_profile) &&
             callee->has_loops();
   }
 };
 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/simpleThresholdPolicy.hpp@b985cbb00e68 (annotated)

src/share/vm/runtime/simpleThresholdPolicy.hpp