src/hotspot/share/compiler/compilationPolicy.cpp
author xliu
Wed, 09 Oct 2019 12:43:32 -0700
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parent 58398 src/hotspot/share/runtime/compilationPolicy.cpp@ff559f979c4b
child 58679 9c3209ff7550
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8165056: move JIT Compiler related files from runtime/ to compiler/ directory Reviewed-by: kvn, coleenp, dholmes
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/*
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 * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "classfile/classLoaderDataGraph.inline.hpp"
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#include "code/compiledIC.hpp"
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#include "code/nmethod.hpp"
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#include "code/scopeDesc.hpp"
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#include "compiler/compilationPolicy.hpp"
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#include "compiler/tieredThresholdPolicy.hpp"
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#include "interpreter/interpreter.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/methodData.hpp"
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#include "oops/method.inline.hpp"
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#include "oops/oop.inline.hpp"
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#include "prims/nativeLookup.hpp"
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#include "runtime/frame.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/stubRoutines.hpp"
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#include "runtime/thread.hpp"
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#include "runtime/vframe.hpp"
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#include "runtime/vmOperations.hpp"
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#include "utilities/events.hpp"
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#include "utilities/globalDefinitions.hpp"
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#ifdef COMPILER1
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#include "c1/c1_Compiler.hpp"
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#endif
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#ifdef COMPILER2
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#include "opto/c2compiler.hpp"
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#endif
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CompilationPolicy* CompilationPolicy::_policy;
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// Determine compilation policy based on command line argument
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void compilationPolicy_init() {
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  #ifdef TIERED
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  if (TieredCompilation) {
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    CompilationPolicy::set_policy(new TieredThresholdPolicy());
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  } else {
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    CompilationPolicy::set_policy(new SimpleCompPolicy());
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  }
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  #else
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  CompilationPolicy::set_policy(new SimpleCompPolicy());
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  #endif
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  CompilationPolicy::policy()->initialize();
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}
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// Returns true if m must be compiled before executing it
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// This is intended to force compiles for methods (usually for
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// debugging) that would otherwise be interpreted for some reason.
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bool CompilationPolicy::must_be_compiled(const methodHandle& m, int comp_level) {
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  // Don't allow Xcomp to cause compiles in replay mode
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  if (ReplayCompiles) return false;
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  if (m->has_compiled_code()) return false;       // already compiled
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  if (!can_be_compiled(m, comp_level)) return false;
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  return !UseInterpreter ||                                              // must compile all methods
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         (UseCompiler && AlwaysCompileLoopMethods && m->has_loops() && CompileBroker::should_compile_new_jobs()); // eagerly compile loop methods
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}
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void CompilationPolicy::compile_if_required(const methodHandle& selected_method, TRAPS) {
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  if (must_be_compiled(selected_method)) {
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    // This path is unusual, mostly used by the '-Xcomp' stress test mode.
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    // Note: with several active threads, the must_be_compiled may be true
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    //       while can_be_compiled is false; remove assert
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    // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile");
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    if (!THREAD->can_call_java() || THREAD->is_Compiler_thread()) {
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      // don't force compilation, resolve was on behalf of compiler
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      return;
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    }
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    if (selected_method->method_holder()->is_not_initialized()) {
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      // 'is_not_initialized' means not only '!is_initialized', but also that
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      // initialization has not been started yet ('!being_initialized')
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      // Do not force compilation of methods in uninitialized classes.
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      // Note that doing this would throw an assert later,
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      // in CompileBroker::compile_method.
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      // We sometimes use the link resolver to do reflective lookups
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      // even before classes are initialized.
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      return;
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    }
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    CompileBroker::compile_method(selected_method, InvocationEntryBci,
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        CompilationPolicy::policy()->initial_compile_level(),
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        methodHandle(), 0, CompileTask::Reason_MustBeCompiled, CHECK);
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  }
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}
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// Returns true if m is allowed to be compiled
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bool CompilationPolicy::can_be_compiled(const methodHandle& m, int comp_level) {
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  // allow any levels for WhiteBox
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  assert(WhiteBoxAPI || comp_level == CompLevel_all || is_compile(comp_level), "illegal compilation level");
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  if (m->is_abstract()) return false;
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  if (DontCompileHugeMethods && m->code_size() > HugeMethodLimit) return false;
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  // Math intrinsics should never be compiled as this can lead to
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  // monotonicity problems because the interpreter will prefer the
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  // compiled code to the intrinsic version.  This can't happen in
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  // production because the invocation counter can't be incremented
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  // but we shouldn't expose the system to this problem in testing
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  // modes.
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  if (!AbstractInterpreter::can_be_compiled(m)) {
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    return false;
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  }
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  if (comp_level == CompLevel_all) {
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    if (TieredCompilation) {
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      // enough to be compilable at any level for tiered
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      return !m->is_not_compilable(CompLevel_simple) || !m->is_not_compilable(CompLevel_full_optimization);
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    } else {
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      // must be compilable at available level for non-tiered
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      return !m->is_not_compilable(CompLevel_highest_tier);
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    }
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  } else if (is_compile(comp_level)) {
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    return !m->is_not_compilable(comp_level);
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  }
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  return false;
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}
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// Returns true if m is allowed to be osr compiled
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bool CompilationPolicy::can_be_osr_compiled(const methodHandle& m, int comp_level) {
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  bool result = false;
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  if (comp_level == CompLevel_all) {
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    if (TieredCompilation) {
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      // enough to be osr compilable at any level for tiered
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      result = !m->is_not_osr_compilable(CompLevel_simple) || !m->is_not_osr_compilable(CompLevel_full_optimization);
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    } else {
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      // must be osr compilable at available level for non-tiered
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      result = !m->is_not_osr_compilable(CompLevel_highest_tier);
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    }
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  } else if (is_compile(comp_level)) {
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    result = !m->is_not_osr_compilable(comp_level);
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  }
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  return (result && can_be_compiled(m, comp_level));
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}
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bool CompilationPolicy::is_compilation_enabled() {
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  // NOTE: CompileBroker::should_compile_new_jobs() checks for UseCompiler
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  return CompileBroker::should_compile_new_jobs();
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}
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CompileTask* CompilationPolicy::select_task_helper(CompileQueue* compile_queue) {
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  // Remove unloaded methods from the queue
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  for (CompileTask* task = compile_queue->first(); task != NULL; ) {
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    CompileTask* next = task->next();
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    if (task->is_unloaded()) {
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      compile_queue->remove_and_mark_stale(task);
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    }
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    task = next;
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  }
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#if INCLUDE_JVMCI
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  if (UseJVMCICompiler && !BackgroundCompilation) {
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    /*
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     * In blocking compilation mode, the CompileBroker will make
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     * compilations submitted by a JVMCI compiler thread non-blocking. These
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     * compilations should be scheduled after all blocking compilations
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     * to service non-compiler related compilations sooner and reduce the
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     * chance of such compilations timing out.
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     */
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    for (CompileTask* task = compile_queue->first(); task != NULL; task = task->next()) {
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      if (task->is_blocking()) {
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        return task;
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      }
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    }
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  }
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#endif
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  return compile_queue->first();
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}
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#ifndef PRODUCT
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void SimpleCompPolicy::trace_osr_completion(nmethod* osr_nm) {
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  if (TraceOnStackReplacement) {
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    if (osr_nm == NULL) tty->print_cr("compilation failed");
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    else tty->print_cr("nmethod " INTPTR_FORMAT, p2i(osr_nm));
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  }
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}
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#endif // !PRODUCT
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void SimpleCompPolicy::initialize() {
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  // Setup the compiler thread numbers
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  if (CICompilerCountPerCPU) {
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    // Example: if CICompilerCountPerCPU is true, then we get
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    // max(log2(8)-1,1) = 2 compiler threads on an 8-way machine.
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    // May help big-app startup time.
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    _compiler_count = MAX2(log2_int(os::active_processor_count())-1,1);
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    // Make sure there is enough space in the code cache to hold all the compiler buffers
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    size_t buffer_size = 1;
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#ifdef COMPILER1
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    buffer_size = is_client_compilation_mode_vm() ? Compiler::code_buffer_size() : buffer_size;
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#endif
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#ifdef COMPILER2
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    buffer_size = is_server_compilation_mode_vm() ? C2Compiler::initial_code_buffer_size() : buffer_size;
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#endif
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    int max_count = (ReservedCodeCacheSize - (CodeCacheMinimumUseSpace DEBUG_ONLY(* 3))) / (int)buffer_size;
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    if (_compiler_count > max_count) {
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      // Lower the compiler count such that all buffers fit into the code cache
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      _compiler_count = MAX2(max_count, 1);
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    }
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    FLAG_SET_ERGO(CICompilerCount, _compiler_count);
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  } else {
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    _compiler_count = CICompilerCount;
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  }
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}
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// Note: this policy is used ONLY if TieredCompilation is off.
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// compiler_count() behaves the following way:
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// - with TIERED build (with both COMPILER1 and COMPILER2 defined) it should return
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//   zero for the c1 compilation levels in server compilation mode runs
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//   and c2 compilation levels in client compilation mode runs.
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// - with COMPILER2 not defined it should return zero for c2 compilation levels.
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// - with COMPILER1 not defined it should return zero for c1 compilation levels.
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// - if neither is defined - always return zero.
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int SimpleCompPolicy::compiler_count(CompLevel comp_level) {
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  assert(!TieredCompilation, "This policy should not be used with TieredCompilation");
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  if (COMPILER2_PRESENT(is_server_compilation_mode_vm() && is_c2_compile(comp_level) ||)
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      is_client_compilation_mode_vm() && is_c1_compile(comp_level)) {
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    return _compiler_count;
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  }
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  return 0;
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}
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void SimpleCompPolicy::reset_counter_for_invocation_event(const methodHandle& m) {
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  // Make sure invocation and backedge counter doesn't overflow again right away
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  // as would be the case for native methods.
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  // BUT also make sure the method doesn't look like it was never executed.
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  // Set carry bit and reduce counter's value to min(count, CompileThreshold/2).
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  MethodCounters* mcs = m->method_counters();
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  assert(mcs != NULL, "MethodCounters cannot be NULL for profiling");
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  mcs->invocation_counter()->set_carry();
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  mcs->backedge_counter()->set_carry();
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  assert(!m->was_never_executed(), "don't reset to 0 -- could be mistaken for never-executed");
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}
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void SimpleCompPolicy::reset_counter_for_back_branch_event(const methodHandle& m) {
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  // Delay next back-branch event but pump up invocation counter to trigger
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  // whole method compilation.
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  MethodCounters* mcs = m->method_counters();
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  assert(mcs != NULL, "MethodCounters cannot be NULL for profiling");
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  InvocationCounter* i = mcs->invocation_counter();
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  InvocationCounter* b = mcs->backedge_counter();
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  // Don't set invocation_counter's value too low otherwise the method will
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  // look like immature (ic < ~5300) which prevents the inlining based on
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  // the type profiling.
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  i->set(i->state(), CompileThreshold);
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  // Don't reset counter too low - it is used to check if OSR method is ready.
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  b->set(b->state(), CompileThreshold / 2);
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}
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//
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// CounterDecay
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//
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// Iterates through invocation counters and decrements them. This
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// is done at each safepoint.
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//
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class CounterDecay : public AllStatic {
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  static jlong _last_timestamp;
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  static void do_method(Method* m) {
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    MethodCounters* mcs = m->method_counters();
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    if (mcs != NULL) {
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      mcs->invocation_counter()->decay();
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    }
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  }
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public:
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  static void decay();
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  static bool is_decay_needed() {
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    return (os::javaTimeMillis() - _last_timestamp) > CounterDecayMinIntervalLength;
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  }
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};
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jlong CounterDecay::_last_timestamp = 0;
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void CounterDecay::decay() {
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  _last_timestamp = os::javaTimeMillis();
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   300
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  // This operation is going to be performed only at the end of a safepoint
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  // and hence GC's will not be going on, all Java mutators are suspended
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   303
  // at this point and hence SystemDictionary_lock is also not needed.
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  assert(SafepointSynchronize::is_at_safepoint(), "can only be executed at a safepoint");
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  size_t nclasses = ClassLoaderDataGraph::num_instance_classes();
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   306
  size_t classes_per_tick = nclasses * (CounterDecayMinIntervalLength * 1e-3 /
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   307
                                        CounterHalfLifeTime);
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   308
  for (size_t i = 0; i < classes_per_tick; i++) {
46729
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   309
    InstanceKlass* k = ClassLoaderDataGraph::try_get_next_class();
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   310
    if (k != NULL) {
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   311
      k->methods_do(do_method);
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    }
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  }
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}
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// Called at the end of the safepoint
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void SimpleCompPolicy::do_safepoint_work() {
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   318
  if(UseCounterDecay && CounterDecay::is_decay_needed()) {
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   319
    CounterDecay::decay();
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  }
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}
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   322
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void SimpleCompPolicy::reprofile(ScopeDesc* trap_scope, bool is_osr) {
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   324
  ScopeDesc* sd = trap_scope;
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  MethodCounters* mcs;
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  InvocationCounter* c;
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  for (; !sd->is_top(); sd = sd->sender()) {
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   328
    mcs = sd->method()->method_counters();
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   329
    if (mcs != NULL) {
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   330
      // Reset ICs of inlined methods, since they can trigger compilations also.
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      mcs->invocation_counter()->reset();
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   332
    }
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   333
  }
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  mcs = sd->method()->method_counters();
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   335
  if (mcs != NULL) {
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   336
    c = mcs->invocation_counter();
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   337
    if (is_osr) {
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   338
      // It was an OSR method, so bump the count higher.
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   339
      c->set(c->state(), CompileThreshold);
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   340
    } else {
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   341
      c->reset();
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   342
    }
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   343
    mcs->backedge_counter()->reset();
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   344
  }
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   345
}
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   346
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   347
// This method can be called by any component of the runtime to notify the policy
22551
9bf46d16dcc6 8025856: Fix typos in the GC code
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   348
// that it's recommended to delay the compilation of this method.
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void SimpleCompPolicy::delay_compilation(Method* method) {
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   350
  MethodCounters* mcs = method->method_counters();
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1ce8485b1907 8012052: java/lang/invoke/6987555/Test6987555.java crashes with assert(mcs != NULL) failed: MethodCounters cannot be NULL.
jiangli
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   351
  if (mcs != NULL) {
1ce8485b1907 8012052: java/lang/invoke/6987555/Test6987555.java crashes with assert(mcs != NULL) failed: MethodCounters cannot be NULL.
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   352
    mcs->invocation_counter()->decay();
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jiangli
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   353
    mcs->backedge_counter()->decay();
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diff changeset
   354
  }
6453
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   355
}
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   356
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   357
void SimpleCompPolicy::disable_compilation(Method* method) {
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   358
  MethodCounters* mcs = method->method_counters();
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   359
  if (mcs != NULL) {
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   360
    mcs->invocation_counter()->set_state(InvocationCounter::wait_for_nothing);
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   361
    mcs->backedge_counter()->set_state(InvocationCounter::wait_for_nothing);
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diff changeset
   362
  }
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   363
}
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   364
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   365
CompileTask* SimpleCompPolicy::select_task(CompileQueue* compile_queue) {
35547
0ee84aa8e705 8146705: Improve JVMCI support for blocking compilation
dnsimon
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   366
  return select_task_helper(compile_queue);
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   367
}
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   368
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   369
bool SimpleCompPolicy::is_mature(Method* method) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
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   370
  MethodData* mdo = method->method_data();
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   371
  assert(mdo != NULL, "Should be");
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   372
  uint current = mdo->mileage_of(method);
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   373
  uint initial = mdo->creation_mileage();
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   374
  if (current < initial)
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   375
    return true;  // some sort of overflow
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   376
  uint target;
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   377
  if (ProfileMaturityPercentage <= 0)
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   378
    target = (uint) -ProfileMaturityPercentage;  // absolute value
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   379
  else
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   380
    target = (uint)( (ProfileMaturityPercentage * CompileThreshold) / 100 );
970dc585ab63 6953144: Tiered compilation
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   381
  return (current >= initial + target);
970dc585ab63 6953144: Tiered compilation
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   382
}
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   383
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ff559f979c4b 8231616: Simplify compilation policy hierarchy
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   384
nmethod* SimpleCompPolicy::event(const methodHandle& method, const methodHandle& inlinee, int branch_bci,
38133
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 37248
diff changeset
   385
                                    int bci, CompLevel comp_level, CompiledMethod* nm, JavaThread* thread) {
6453
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   386
  assert(comp_level == CompLevel_none, "This should be only called from the interpreter");
970dc585ab63 6953144: Tiered compilation
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diff changeset
   387
  NOT_PRODUCT(trace_frequency_counter_overflow(method, branch_bci, bci));
11572
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   388
  if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) {
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
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diff changeset
   389
    // If certain JVMTI events (e.g. frame pop event) are requested then the
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
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diff changeset
   390
    // thread is forced to remain in interpreted code. This is
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   391
    // implemented partly by a check in the run_compiled_code
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
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diff changeset
   392
    // section of the interpreter whether we should skip running
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
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diff changeset
   393
    // compiled code, and partly by skipping OSR compiles for
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   394
    // interpreted-only threads.
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   395
    if (bci != InvocationEntryBci) {
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   396
      reset_counter_for_back_branch_event(method);
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
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diff changeset
   397
      return NULL;
6453
970dc585ab63 6953144: Tiered compilation
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diff changeset
   398
    }
970dc585ab63 6953144: Tiered compilation
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diff changeset
   399
  }
52934
8deeb7bba516 8214917: CTW testlibrary shouldn't ignore errors raised by the library itself
iignatyev
parents: 52877
diff changeset
   400
  if (ReplayCompiles) {
14477
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   401
    // Don't trigger other compiles in testing mode
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   402
    if (bci == InvocationEntryBci) {
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   403
      reset_counter_for_invocation_event(method);
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   404
    } else {
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   405
      reset_counter_for_back_branch_event(method);
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   406
    }
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   407
    return NULL;
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   408
  }
95e66ea71f71 6830717: replay of compilations would help with debugging
minqi
parents: 14391
diff changeset
   409
6453
970dc585ab63 6953144: Tiered compilation
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parents: 6418
diff changeset
   410
  if (bci == InvocationEntryBci) {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   411
    // when code cache is full, compilation gets switched off, UseCompiler
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   412
    // is set to false
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   413
    if (!method->has_compiled_code() && UseCompiler) {
11572
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   414
      method_invocation_event(method, thread);
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   415
    } else {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   416
      // Force counter overflow on method entry, even if no compilation
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   417
      // happened.  (The method_invocation_event call does this also.)
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   418
      reset_counter_for_invocation_event(method);
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   419
    }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   420
    // compilation at an invocation overflow no longer goes and retries test for
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   421
    // compiled method. We always run the loser of the race as interpreted.
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   422
    // so return NULL
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   423
    return NULL;
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   424
  } else {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   425
    // counter overflow in a loop => try to do on-stack-replacement
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   426
    nmethod* osr_nm = method->lookup_osr_nmethod_for(bci, CompLevel_highest_tier, true);
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   427
    NOT_PRODUCT(trace_osr_request(method, osr_nm, bci));
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   428
    // when code cache is full, we should not compile any more...
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   429
    if (osr_nm == NULL && UseCompiler) {
11572
84afef481892 7131259: compile_method and CompilationPolicy::event shouldn't be declared TRAPS
iveresov
parents: 10014
diff changeset
   430
      method_back_branch_event(method, bci, thread);
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   431
      osr_nm = method->lookup_osr_nmethod_for(bci, CompLevel_highest_tier, true);
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   432
    }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   433
    if (osr_nm == NULL) {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   434
      reset_counter_for_back_branch_event(method);
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   435
      return NULL;
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   436
    }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   437
    return osr_nm;
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   438
  }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   439
  return NULL;
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   440
}
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   441
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   442
#ifndef PRODUCT
58398
ff559f979c4b 8231616: Simplify compilation policy hierarchy
redestad
parents: 58367
diff changeset
   443
void SimpleCompPolicy::trace_frequency_counter_overflow(const methodHandle& m, int branch_bci, int bci) {
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   444
  if (TraceInvocationCounterOverflow) {
17000
11bf92e571a2 8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents: 14477
diff changeset
   445
    MethodCounters* mcs = m->method_counters();
11bf92e571a2 8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents: 14477
diff changeset
   446
    assert(mcs != NULL, "MethodCounters cannot be NULL for profiling");
11bf92e571a2 8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents: 14477
diff changeset
   447
    InvocationCounter* ic = mcs->invocation_counter();
11bf92e571a2 8010862: The Method counter fields used for profiling can be allocated lazily.
jiangli
parents: 14477
diff changeset
   448
    InvocationCounter* bc = mcs->backedge_counter();
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   449
    ResourceMark rm;
33604
ad1cd9269bd4 8139116: Fixes for warning "format not a string literal"
goetz
parents: 33593
diff changeset
   450
    if (bci == InvocationEntryBci) {
ad1cd9269bd4 8139116: Fixes for warning "format not a string literal"
goetz
parents: 33593
diff changeset
   451
      tty->print("comp-policy cntr ovfl @ %d in entry of ", bci);
ad1cd9269bd4 8139116: Fixes for warning "format not a string literal"
goetz
parents: 33593
diff changeset
   452
    } else {
ad1cd9269bd4 8139116: Fixes for warning "format not a string literal"
goetz
parents: 33593
diff changeset
   453
      tty->print("comp-policy cntr ovfl @ %d in loop of ", bci);
ad1cd9269bd4 8139116: Fixes for warning "format not a string literal"
goetz
parents: 33593
diff changeset
   454
    }
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   455
    m->print_value();
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   456
    tty->cr();
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   457
    ic->print();
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   458
    bc->print();
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   459
    if (ProfileInterpreter) {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   460
      if (bci != InvocationEntryBci) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 11572
diff changeset
   461
        MethodData* mdo = m->method_data();
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   462
        if (mdo != NULL) {
48418
2207e2917a68 8191854: Null pointer dereference in methodData.hpp:462
dlong
parents: 47216
diff changeset
   463
          ProfileData *pd = mdo->bci_to_data(branch_bci);
2207e2917a68 8191854: Null pointer dereference in methodData.hpp:462
dlong
parents: 47216
diff changeset
   464
          if (pd == NULL) {
2207e2917a68 8191854: Null pointer dereference in methodData.hpp:462
dlong
parents: 47216
diff changeset
   465
            tty->print_cr("back branch count = N/A (missing ProfileData)");
2207e2917a68 8191854: Null pointer dereference in methodData.hpp:462
dlong
parents: 47216
diff changeset
   466
          } else {
2207e2917a68 8191854: Null pointer dereference in methodData.hpp:462
dlong
parents: 47216
diff changeset
   467
            tty->print_cr("back branch count = %d", pd->as_JumpData()->taken());
2207e2917a68 8191854: Null pointer dereference in methodData.hpp:462
dlong
parents: 47216
diff changeset
   468
          }
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   469
        }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   470
      }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   471
    }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   472
  }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   473
}
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   474
58398
ff559f979c4b 8231616: Simplify compilation policy hierarchy
redestad
parents: 58367
diff changeset
   475
void SimpleCompPolicy::trace_osr_request(const methodHandle& method, nmethod* osr, int bci) {
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   476
  if (TraceOnStackReplacement) {
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   477
    ResourceMark rm;
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   478
    tty->print(osr != NULL ? "Reused OSR entry for " : "Requesting OSR entry for ");
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   479
    method->print_short_name(tty);
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   480
    tty->print_cr(" at bci %d", bci);
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   481
  }
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   482
}
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   483
#endif // !PRODUCT
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 6418
diff changeset
   484
33593
60764a78fa5c 8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents: 32582
diff changeset
   485
void SimpleCompPolicy::method_invocation_event(const methodHandle& m, JavaThread* thread) {
13891
35dabd293e56 7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents: 13728
diff changeset
   486
  const int comp_level = CompLevel_highest_tier;
35dabd293e56 7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents: 13728
diff changeset
   487
  const int hot_count = m->invocation_count();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
  reset_counter_for_invocation_event(m);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
17126
42a942feeea2 8012322: Tiered: CompilationPolicy::can_be_compiled(CompLevel_all) mistakenly return false
iignatyev
parents: 17002
diff changeset
   490
  if (is_compilation_enabled() && can_be_compiled(m, comp_level)) {
38133
78b95467b9f1 8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents: 37248
diff changeset
   491
    CompiledMethod* nm = m->code();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
    if (nm == NULL ) {
38218
f5ba1dea04eb 8153013: BlockingCompilation test times out
neliasso
parents: 38139
diff changeset
   493
      CompileBroker::compile_method(m, InvocationEntryBci, comp_level, m, hot_count, CompileTask::Reason_InvocationCount, thread);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
33593
60764a78fa5c 8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents: 32582
diff changeset
   498
void SimpleCompPolicy::method_back_branch_event(const methodHandle& m, int bci, JavaThread* thread) {
13891
35dabd293e56 7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents: 13728
diff changeset
   499
  const int comp_level = CompLevel_highest_tier;
35dabd293e56 7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents: 13728
diff changeset
   500
  const int hot_count = m->backedge_count();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
19332
ee4c8c2af356 8022832: Add WB APIs for OSR compilation
iignatyev
parents: 17126
diff changeset
   502
  if (is_compilation_enabled() && can_be_osr_compiled(m, comp_level)) {
38218
f5ba1dea04eb 8153013: BlockingCompilation test times out
neliasso
parents: 38139
diff changeset
   503
    CompileBroker::compile_method(m, bci, comp_level, m, hot_count, CompileTask::Reason_BackedgeCount, thread);
13891
35dabd293e56 7200001: failed C1 OSR compile doesn't get recompiled with C2
twisti
parents: 13728
diff changeset
   504
    NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(bci, comp_level, true));)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
}