changeset 447:8fa025608ec6

6771742: Remove duplicate files from G1 merge Summary: Remove duplicate files and add includeDB_gc_g1 file in windows Makefile Reviewed-by: jcoomes, ysr
author jmasa
date Tue, 18 Nov 2008 14:52:33 -0800
parents da9cb4e97a5f
children b5e603f2e024
files make/windows/projectfiles/common/Makefile src/share/vm/gc_implementation/concurrentMarkSweep/concurrentGCThread.cpp src/share/vm/gc_implementation/concurrentMarkSweep/concurrentGCThread.hpp
diffstat 3 files changed, 2 insertions(+), 482 deletions(-) [+]
line wrap: on
line diff
--- a/make/windows/projectfiles/common/Makefile	Fri Nov 14 14:23:05 2008 -0800
+++ b/make/windows/projectfiles/common/Makefile	Tue Nov 18 14:52:33 2008 -0800
@@ -56,7 +56,8 @@
     $(HOTSPOTWORKSPACE)/src/share/vm/gc_implementation/includeDB_gc_shared \
     $(HOTSPOTWORKSPACE)/src/share/vm/gc_implementation/includeDB_gc_parNew \
     $(HOTSPOTWORKSPACE)/src/share/vm/gc_implementation/includeDB_gc_parallelScavenge \
-    $(HOTSPOTWORKSPACE)/src/share/vm/gc_implementation/includeDB_gc_concurrentMarkSweep
+    $(HOTSPOTWORKSPACE)/src/share/vm/gc_implementation/includeDB_gc_concurrentMarkSweep \
+    $(HOTSPOTWORKSPACE)/src/share/vm/gc_implementation/includeDB_gc_g1
 
 
 IncludeDBs_kernel =$(IncludeDBs_base) \
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentGCThread.cpp	Fri Nov 14 14:23:05 2008 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,314 +0,0 @@
-/*
- * Copyright 2001-2005 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.
- *
- */
-
-// CopyrightVersion 1.2
-
-# include "incls/_precompiled.incl"
-# include "incls/_concurrentGCThread.cpp.incl"
-
-bool ConcurrentGCThread::_should_terminate    = false;
-bool ConcurrentGCThread::_has_terminated      = false;
-int  ConcurrentGCThread::_CGC_flag            = CGC_nil;
-
-SuspendibleThreadSet ConcurrentGCThread::_sts;
-
-ConcurrentGCThread::ConcurrentGCThread() {
-  _sts.initialize();
-};
-
-void ConcurrentGCThread::stopWorldAndDo(VoidClosure* op) {
-  MutexLockerEx x(Heap_lock,
-                  Mutex::_no_safepoint_check_flag);
-  // warning("CGC: about to try stopping world");
-  SafepointSynchronize::begin();
-  // warning("CGC: successfully stopped world");
-  op->do_void();
-  SafepointSynchronize::end();
-  // warning("CGC: successfully restarted world");
-}
-
-void ConcurrentGCThread::safepoint_synchronize() {
-  _sts.suspend_all();
-}
-
-void ConcurrentGCThread::safepoint_desynchronize() {
-  _sts.resume_all();
-}
-
-void ConcurrentGCThread::create_and_start() {
-  if (os::create_thread(this, os::cgc_thread)) {
-    // XXX: need to set this to low priority
-    // unless "agressive mode" set; priority
-    // should be just less than that of VMThread.
-    os::set_priority(this, NearMaxPriority);
-    if (!_should_terminate && !DisableStartThread) {
-      os::start_thread(this);
-    }
-  }
-}
-
-void ConcurrentGCThread::initialize_in_thread() {
-  this->record_stack_base_and_size();
-  this->initialize_thread_local_storage();
-  this->set_active_handles(JNIHandleBlock::allocate_block());
-  // From this time Thread::current() should be working.
-  assert(this == Thread::current(), "just checking");
-}
-
-void ConcurrentGCThread::wait_for_universe_init() {
-  MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag);
-  while (!is_init_completed() && !_should_terminate) {
-    CGC_lock->wait(Mutex::_no_safepoint_check_flag, 200);
-  }
-}
-
-void ConcurrentGCThread::terminate() {
-  // Signal that it is terminated
-  {
-    MutexLockerEx mu(Terminator_lock,
-                     Mutex::_no_safepoint_check_flag);
-    _has_terminated = true;
-    Terminator_lock->notify();
-  }
-
-  // Thread destructor usually does this..
-  ThreadLocalStorage::set_thread(NULL);
-}
-
-
-void SuspendibleThreadSet::initialize_work() {
-  MutexLocker x(STS_init_lock);
-  if (!_initialized) {
-    _m             = new Monitor(Mutex::leaf,
-                                 "SuspendibleThreadSetLock", true);
-    _async         = 0;
-    _async_stop    = false;
-    _async_stopped = 0;
-    _initialized   = true;
-  }
-}
-
-void SuspendibleThreadSet::join() {
-  initialize();
-  MutexLockerEx x(_m, Mutex::_no_safepoint_check_flag);
-  while (_async_stop) _m->wait(Mutex::_no_safepoint_check_flag);
-  _async++;
-  assert(_async > 0, "Huh.");
-}
-
-void SuspendibleThreadSet::leave() {
-  assert(_initialized, "Must be initialized.");
-  MutexLockerEx x(_m, Mutex::_no_safepoint_check_flag);
-  _async--;
-  assert(_async >= 0, "Huh.");
-  if (_async_stop) _m->notify_all();
-}
-
-void SuspendibleThreadSet::yield(const char* id) {
-  assert(_initialized, "Must be initialized.");
-  if (_async_stop) {
-    MutexLockerEx x(_m, Mutex::_no_safepoint_check_flag);
-    if (_async_stop) {
-      _async_stopped++;
-      assert(_async_stopped > 0, "Huh.");
-      if (_async_stopped == _async) {
-        if (ConcGCYieldTimeout > 0) {
-          double now = os::elapsedTime();
-          guarantee((now - _suspend_all_start) * 1000.0 <
-                    (double)ConcGCYieldTimeout,
-                    "Long delay; whodunit?");
-        }
-      }
-      _m->notify_all();
-      while (_async_stop) _m->wait(Mutex::_no_safepoint_check_flag);
-      _async_stopped--;
-      assert(_async >= 0, "Huh");
-      _m->notify_all();
-    }
-  }
-}
-
-void SuspendibleThreadSet::suspend_all() {
-  initialize();  // If necessary.
-  if (ConcGCYieldTimeout > 0) {
-    _suspend_all_start = os::elapsedTime();
-  }
-  MutexLockerEx x(_m, Mutex::_no_safepoint_check_flag);
-  assert(!_async_stop, "Only one at a time.");
-  _async_stop = true;
-  while (_async_stopped < _async) _m->wait(Mutex::_no_safepoint_check_flag);
-}
-
-void SuspendibleThreadSet::resume_all() {
-  assert(_initialized, "Must be initialized.");
-  MutexLockerEx x(_m, Mutex::_no_safepoint_check_flag);
-  assert(_async_stopped == _async, "Huh.");
-  _async_stop = false;
-  _m->notify_all();
-}
-
-static void _sltLoop(JavaThread* thread, TRAPS) {
-  SurrogateLockerThread* slt = (SurrogateLockerThread*)thread;
-  slt->loop();
-}
-
-SurrogateLockerThread::SurrogateLockerThread() :
-  JavaThread(&_sltLoop),
-  _monitor(Mutex::nonleaf, "SLTMonitor"),
-  _buffer(empty)
-{}
-
-SurrogateLockerThread* SurrogateLockerThread::make(TRAPS) {
-  klassOop k =
-    SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(),
-                                      true, CHECK_NULL);
-  instanceKlassHandle klass (THREAD, k);
-  instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_NULL);
-
-  const char thread_name[] = "Surrogate Locker Thread (CMS)";
-  Handle string = java_lang_String::create_from_str(thread_name, CHECK_NULL);
-
-  // Initialize thread_oop to put it into the system threadGroup
-  Handle thread_group (THREAD, Universe::system_thread_group());
-  JavaValue result(T_VOID);
-  JavaCalls::call_special(&result, thread_oop,
-                          klass,
-                          vmSymbolHandles::object_initializer_name(),
-                          vmSymbolHandles::threadgroup_string_void_signature(),
-                          thread_group,
-                          string,
-                          CHECK_NULL);
-
-  SurrogateLockerThread* res;
-  {
-    MutexLocker mu(Threads_lock);
-    res = new SurrogateLockerThread();
-
-    // At this point it may be possible that no osthread was created for the
-    // JavaThread due to lack of memory. We would have to throw an exception
-    // in that case. However, since this must work and we do not allow
-    // exceptions anyway, check and abort if this fails.
-    if (res == NULL || res->osthread() == NULL) {
-      vm_exit_during_initialization("java.lang.OutOfMemoryError",
-                                    "unable to create new native thread");
-    }
-    java_lang_Thread::set_thread(thread_oop(), res);
-    java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
-    java_lang_Thread::set_daemon(thread_oop());
-
-    res->set_threadObj(thread_oop());
-    Threads::add(res);
-    Thread::start(res);
-  }
-  os::yield(); // This seems to help with initial start-up of SLT
-  return res;
-}
-
-void SurrogateLockerThread::manipulatePLL(SLT_msg_type msg) {
-  MutexLockerEx x(&_monitor, Mutex::_no_safepoint_check_flag);
-  assert(_buffer == empty, "Should be empty");
-  assert(msg != empty, "empty message");
-  _buffer = msg;
-  while (_buffer != empty) {
-    _monitor.notify();
-    _monitor.wait(Mutex::_no_safepoint_check_flag);
-  }
-}
-
-// ======= Surrogate Locker Thread =============
-
-void SurrogateLockerThread::loop() {
-  BasicLock pll_basic_lock;
-  SLT_msg_type msg;
-  debug_only(unsigned int owned = 0;)
-
-  while (/* !isTerminated() */ 1) {
-    {
-      MutexLocker x(&_monitor);
-      // Since we are a JavaThread, we can't be here at a safepoint.
-      assert(!SafepointSynchronize::is_at_safepoint(),
-             "SLT is a JavaThread");
-      // wait for msg buffer to become non-empty
-      while (_buffer == empty) {
-        _monitor.notify();
-        _monitor.wait();
-      }
-      msg = _buffer;
-    }
-    switch(msg) {
-      case acquirePLL: {
-        instanceRefKlass::acquire_pending_list_lock(&pll_basic_lock);
-        debug_only(owned++;)
-        break;
-      }
-      case releaseAndNotifyPLL: {
-        assert(owned > 0, "Don't have PLL");
-        instanceRefKlass::release_and_notify_pending_list_lock(&pll_basic_lock);
-        debug_only(owned--;)
-        break;
-      }
-      case empty:
-      default: {
-        guarantee(false,"Unexpected message in _buffer");
-        break;
-      }
-    }
-    {
-      MutexLocker x(&_monitor);
-      // Since we are a JavaThread, we can't be here at a safepoint.
-      assert(!SafepointSynchronize::is_at_safepoint(),
-             "SLT is a JavaThread");
-      _buffer = empty;
-      _monitor.notify();
-    }
-  }
-  assert(!_monitor.owned_by_self(), "Should unlock before exit.");
-}
-
-
-// ===== STS Access From Outside CGCT =====
-
-void ConcurrentGCThread::stsYield(const char* id) {
-  assert( Thread::current()->is_ConcurrentGC_thread(),
-          "only a conc GC thread can call this" );
-  _sts.yield(id);
-}
-
-bool ConcurrentGCThread::stsShouldYield() {
-  assert( Thread::current()->is_ConcurrentGC_thread(),
-          "only a conc GC thread can call this" );
-  return _sts.should_yield();
-}
-
-void ConcurrentGCThread::stsJoin() {
-  assert( Thread::current()->is_ConcurrentGC_thread(),
-          "only a conc GC thread can call this" );
-  _sts.join();
-}
-
-void ConcurrentGCThread::stsLeave() {
-  assert( Thread::current()->is_ConcurrentGC_thread(),
-          "only a conc GC thread can call this" );
-  _sts.leave();
-}
--- a/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentGCThread.hpp	Fri Nov 14 14:23:05 2008 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,167 +0,0 @@
-/*
- * Copyright 2001-2005 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.
- *
- */
-
-class VoidClosure;
-
-// A SuspendibleThreadSet is (obviously) a set of threads that can be
-// suspended.  A thread can join and later leave the set, and periodically
-// yield.  If some thread (not in the set) requests, via suspend_all, that
-// the threads be suspended, then the requesting thread is blocked until
-// all the threads in the set have yielded or left the set.  (Threads may
-// not enter the set when an attempted suspension is in progress.)  The
-// suspending thread later calls resume_all, allowing the suspended threads
-// to continue.
-
-class SuspendibleThreadSet {
-  Monitor* _m;
-  int      _async;
-  bool     _async_stop;
-  int      _async_stopped;
-  bool     _initialized;
-  double   _suspend_all_start;
-
-  void initialize_work();
-
- public:
-  SuspendibleThreadSet() : _initialized(false) {}
-
-  // Add the current thread to the set.  May block if a suspension
-  // is in progress.
-  void join();
-  // Removes the current thread from the set.
-  void leave();
-  // Returns "true" iff an suspension is in progress.
-  bool should_yield() { return _async_stop; }
-  // Suspends the current thread if a suspension is in progress (for
-  // the duration of the suspension.)
-  void yield(const char* id);
-  // Return when all threads in the set are suspended.
-  void suspend_all();
-  // Allow suspended threads to resume.
-  void resume_all();
-  // Redundant initializations okay.
-  void initialize() {
-    // Double-check dirty read idiom.
-    if (!_initialized) initialize_work();
-  }
-};
-
-
-class ConcurrentGCThread: public NamedThread {
-  friend class VMStructs;
-
-protected:
-  static bool _should_terminate;
-  static bool _has_terminated;
-
-  enum CGC_flag_type {
-    CGC_nil           = 0x0,
-    CGC_dont_suspend  = 0x1,
-    CGC_CGC_safepoint = 0x2,
-    CGC_VM_safepoint  = 0x4
-  };
-
-  static int _CGC_flag;
-
-  static bool CGC_flag_is_set(int b)       { return (_CGC_flag & b) != 0; }
-  static int set_CGC_flag(int b)           { return _CGC_flag |= b; }
-  static int reset_CGC_flag(int b)         { return _CGC_flag &= ~b; }
-
-  void stopWorldAndDo(VoidClosure* op);
-
-  // All instances share this one set.
-  static SuspendibleThreadSet _sts;
-
-  // Create and start the thread (setting it's priority high.)
-  void create_and_start();
-
-  // Do initialization steps in the thread: record stack base and size,
-  // init thread local storage, set JNI handle block.
-  void initialize_in_thread();
-
-  // Wait until Universe::is_fully_initialized();
-  void wait_for_universe_init();
-
-  // Record that the current thread is terminating, and will do more
-  // concurrent work.
-  void terminate();
-
-public:
-  // Constructor
-
-  ConcurrentGCThread();
-  ~ConcurrentGCThread() {} // Exists to call NamedThread destructor.
-
-  // Tester
-  bool is_ConcurrentGC_thread() const          { return true;       }
-
-  static void safepoint_synchronize();
-  static void safepoint_desynchronize();
-
-  // All overridings should probably do _sts::yield, but we allow
-  // overriding for distinguished debugging messages.  Default is to do
-  // nothing.
-  virtual void yield() {}
-
-  bool should_yield() { return _sts.should_yield(); }
-
-  // they are prefixed by sts since there are already yield() and
-  // should_yield() (non-static) methods in this class and it was an
-  // easy way to differentiate them.
-  static void stsYield(const char* id);
-  static bool stsShouldYield();
-  static void stsJoin();
-  static void stsLeave();
-
-};
-
-// The SurrogateLockerThread is used by concurrent GC threads for
-// manipulating Java monitors, in particular, currently for
-// manipulating the pending_list_lock. XXX
-class SurrogateLockerThread: public JavaThread {
-  friend class VMStructs;
- public:
-  enum SLT_msg_type {
-    empty = 0,           // no message
-    acquirePLL,          // acquire pending list lock
-    releaseAndNotifyPLL  // notify and release pending list lock
-  };
- private:
-  // the following are shared with the CMSThread
-  SLT_msg_type  _buffer;  // communication buffer
-  Monitor       _monitor; // monitor controlling buffer
-  BasicLock     _basicLock; // used for PLL locking
-
- public:
-  static SurrogateLockerThread* make(TRAPS);
-
-  SurrogateLockerThread();
-
-  bool is_hidden_from_external_view() const     { return true; }
-
-  void loop(); // main method
-
-  void manipulatePLL(SLT_msg_type msg);
-
-};