Пример #1
0
// Returns true if m must be compiled before executing it
// This is intended to force compiles for methods (usually for
// debugging) that would otherwise be interpreted for some reason.
bool CompilationPolicy::must_be_compiled(methodHandle m, int comp_level) {
    if (m->has_compiled_code()) return false;       // already compiled
    if (!can_be_compiled(m, comp_level)) return false;

    return !UseInterpreter ||                                              // must compile all methods
           (UseCompiler && AlwaysCompileLoopMethods && m->has_loops() && CompileBroker::should_compile_new_jobs()); // eagerly compile loop methods
}
// Returns true if m must be compiled before executing it
// This is intended to force compiles for methods (usually for
// debugging) that would otherwise be interpreted for some reason.
bool CompilationPolicy::mustBeCompiled(methodHandle m) {
  if (m->has_compiled_code()) return false;       // already compiled
  if (!canBeCompiled(m))      return false;

  return !UseInterpreter ||                                              // must compile all methods
         (UseCompiler && AlwaysCompileLoopMethods && m->has_loops()); // eagerly compile loop methods
}
Пример #3
0
// Check if the method can be compiled, change level if necessary
void SimpleThresholdPolicy::compile(const methodHandle& mh, int bci, CompLevel level, JavaThread* thread) {
  assert(level <= TieredStopAtLevel, "Invalid compilation level");
  if (level == CompLevel_none) {
    return;
  }
  if (level == CompLevel_aot) {
    if (mh->has_aot_code()) {
      if (PrintTieredEvents) {
        print_event(COMPILE, mh, mh, bci, level);
      }
      MutexLocker ml(Compile_lock);
      NoSafepointVerifier nsv;
      if (mh->has_aot_code() && mh->code() != mh->aot_code()) {
        mh->aot_code()->make_entrant();
        if (mh->has_compiled_code()) {
          mh->code()->make_not_entrant();
        }
        Method::set_code(mh, mh->aot_code());
      }
    }
    return;
  }

  // Check if the method can be compiled. If it cannot be compiled with C1, continue profiling
  // in the interpreter and then compile with C2 (the transition function will request that,
  // see common() ). If the method cannot be compiled with C2 but still can with C1, compile it with
  // pure C1.
  if (!can_be_compiled(mh, level)) {
    if (level == CompLevel_full_optimization && can_be_compiled(mh, CompLevel_simple)) {
        compile(mh, bci, CompLevel_simple, thread);
    }
    return;
  }
  if (bci != InvocationEntryBci && mh->is_not_osr_compilable(level)) {
    return;
  }
  if (!CompileBroker::compilation_is_in_queue(mh)) {
    if (PrintTieredEvents) {
      print_event(COMPILE, mh, mh, bci, level);
    }
    submit_compile(mh, bci, level, thread);
  }
}