src/share/vm/runtime/advancedThresholdPolicy.cpp

rev 10354 : 8150646: Add support for blocking compiles though whitebox API
Reviewed-by: kvn, ppunegov, simonis, neliasso
Contributed-by: nils.eliasson@oracle.com, volker.simonis@gmail.com

*** 1,7 ****
  /*
!  * Copyright (c) 2010, 2015, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2010, 2016, 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.
*** 162,174 ****
    return false;
  }
  
  // Called with the queue locked and with at least one element
  CompileTask* AdvancedThresholdPolicy::select_task(CompileQueue* compile_queue) {
- #if INCLUDE_JVMCI
    CompileTask *max_blocking_task = NULL;
- #endif
    CompileTask *max_task = NULL;
    Method* max_method = NULL;
    jlong t = os::javaTimeMillis();
    // Iterate through the queue and find a method with a maximum rate.
    for (CompileTask* task = compile_queue->first(); task != NULL;) {
--- 162,172 ----
*** 178,188 ****
      if (max_task == NULL) {
        max_task = task;
        max_method = method;
      } else {
        // If a method has been stale for some time, remove it from the queue.
!       if (is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) {
          if (PrintTieredEvents) {
            print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level());
          }
          task->log_task_dequeued("stale");
          compile_queue->remove_and_mark_stale(task);
--- 176,187 ----
      if (max_task == NULL) {
        max_task = task;
        max_method = method;
      } else {
        // If a method has been stale for some time, remove it from the queue.
!       // Blocking tasks don't become stale
!       if (!task->is_blocking() && is_stale(t, TieredCompileTaskTimeout, method) && !is_old(method)) {
          if (PrintTieredEvents) {
            print_event(REMOVE_FROM_QUEUE, method, method, task->osr_bci(), (CompLevel)task->comp_level());
          }
          task->log_task_dequeued("stale");
          compile_queue->remove_and_mark_stale(task);
*** 195,227 ****
        if (compare_methods(method, max_method)) {
          max_task = task;
          max_method = method;
        }
      }
! #if INCLUDE_JVMCI
!     if (UseJVMCICompiler && task->is_blocking()) {
        if (max_blocking_task == NULL || compare_methods(method, max_blocking_task->method())) {
          max_blocking_task = task;
        }
      }
! #endif
      task = next_task;
    }
  
- #if INCLUDE_JVMCI
-   if (UseJVMCICompiler) {
      if (max_blocking_task != NULL) {
        // In blocking compilation mode, the CompileBroker will make
        // compilations submitted by a JVMCI compiler thread non-blocking. These
        // compilations should be scheduled after all blocking compilations
        // to service non-compiler related compilations sooner and reduce the
        // chance of such compilations timing out.
        max_task = max_blocking_task;
        max_method = max_task->method();
      }
-   }
- #endif
  
    if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile
        && is_method_profiled(max_method)) {
      max_task->set_comp_level(CompLevel_limited_profile);
      if (PrintTieredEvents) {
--- 194,222 ----
        if (compare_methods(method, max_method)) {
          max_task = task;
          max_method = method;
        }
      }
! 
!     if (task->is_blocking()) {
        if (max_blocking_task == NULL || compare_methods(method, max_blocking_task->method())) {
          max_blocking_task = task;
        }
      }
! 
      task = next_task;
    }
  
    if (max_blocking_task != NULL) {
      // In blocking compilation mode, the CompileBroker will make
      // compilations submitted by a JVMCI compiler thread non-blocking. These
      // compilations should be scheduled after all blocking compilations
      // to service non-compiler related compilations sooner and reduce the
      // chance of such compilations timing out.
      max_task = max_blocking_task;
      max_method = max_task->method();
    }
  
    if (max_task->comp_level() == CompLevel_full_profile && TieredStopAtLevel > CompLevel_full_profile
        && is_method_profiled(max_method)) {
      max_task->set_comp_level(CompLevel_limited_profile);
      if (PrintTieredEvents) {