--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/compiler/compileBroker.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1857 @@
+/*
+ * Copyright 1999-2007 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.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_compileBroker.cpp.incl"
+
+#ifdef DTRACE_ENABLED
+
+// Only bother with this argument setup if dtrace is available
+
+HS_DTRACE_PROBE_DECL8(hotspot, method__compile__begin,
+  char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t);
+HS_DTRACE_PROBE_DECL9(hotspot, method__compile__end,
+  char*, intptr_t, char*, intptr_t, char*, intptr_t, char*, intptr_t, bool);
+
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)              \
+  {                                                                      \
+    char* comp_name = (char*)(compiler)->name();                         \
+    symbolOop klass_name = (method)->klass_name();                       \
+    symbolOop name = (method)->name();                                   \
+    symbolOop signature = (method)->signature();                         \
+    HS_DTRACE_PROBE8(hotspot, method__compile__begin,                    \
+      comp_name, strlen(comp_name),                                      \
+      klass_name->bytes(), klass_name->utf8_length(),                    \
+      name->bytes(), name->utf8_length(),                                \
+      signature->bytes(), signature->utf8_length());                     \
+  }
+
+#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)       \
+  {                                                                      \
+    char* comp_name = (char*)(compiler)->name();                         \
+    symbolOop klass_name = (method)->klass_name();                       \
+    symbolOop name = (method)->name();                                   \
+    symbolOop signature = (method)->signature();                         \
+    HS_DTRACE_PROBE9(hotspot, method__compile__end,                      \
+      comp_name, strlen(comp_name),                                      \
+      klass_name->bytes(), klass_name->utf8_length(),                    \
+      name->bytes(), name->utf8_length(),                                \
+      signature->bytes(), signature->utf8_length(), (success));          \
+  }
+
+#else //  ndef DTRACE_ENABLED
+
+#define DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler, method)
+#define DTRACE_METHOD_COMPILE_END_PROBE(compiler, method, success)
+
+#endif // ndef DTRACE_ENABLED
+
+bool CompileBroker::_initialized = false;
+volatile bool CompileBroker::_should_block = false;
+
+// The installed compiler(s)
+AbstractCompiler* CompileBroker::_compilers[2];
+
+// These counters are used for assigning id's to each compilation
+uint CompileBroker::_compilation_id        = 0;
+uint CompileBroker::_osr_compilation_id    = 0;
+
+// Debugging information
+int  CompileBroker::_last_compile_type     = no_compile;
+int  CompileBroker::_last_compile_level    = CompLevel_none;
+char CompileBroker::_last_method_compiled[CompileBroker::name_buffer_length];
+
+// Performance counters
+PerfCounter* CompileBroker::_perf_total_compilation = NULL;
+PerfCounter* CompileBroker::_perf_osr_compilation = NULL;
+PerfCounter* CompileBroker::_perf_standard_compilation = NULL;
+
+PerfCounter* CompileBroker::_perf_total_bailout_count = NULL;
+PerfCounter* CompileBroker::_perf_total_invalidated_count = NULL;
+PerfCounter* CompileBroker::_perf_total_compile_count = NULL;
+PerfCounter* CompileBroker::_perf_total_osr_compile_count = NULL;
+PerfCounter* CompileBroker::_perf_total_standard_compile_count = NULL;
+
+PerfCounter* CompileBroker::_perf_sum_osr_bytes_compiled = NULL;
+PerfCounter* CompileBroker::_perf_sum_standard_bytes_compiled = NULL;
+PerfCounter* CompileBroker::_perf_sum_nmethod_size = NULL;
+PerfCounter* CompileBroker::_perf_sum_nmethod_code_size = NULL;
+
+PerfStringVariable* CompileBroker::_perf_last_method = NULL;
+PerfStringVariable* CompileBroker::_perf_last_failed_method = NULL;
+PerfStringVariable* CompileBroker::_perf_last_invalidated_method = NULL;
+PerfVariable*       CompileBroker::_perf_last_compile_type = NULL;
+PerfVariable*       CompileBroker::_perf_last_compile_size = NULL;
+PerfVariable*       CompileBroker::_perf_last_failed_type = NULL;
+PerfVariable*       CompileBroker::_perf_last_invalidated_type = NULL;
+
+// Timers and counters for generating statistics
+elapsedTimer CompileBroker::_t_total_compilation;
+elapsedTimer CompileBroker::_t_osr_compilation;
+elapsedTimer CompileBroker::_t_standard_compilation;
+
+int CompileBroker::_total_bailout_count          = 0;
+int CompileBroker::_total_invalidated_count      = 0;
+int CompileBroker::_total_compile_count          = 0;
+int CompileBroker::_total_osr_compile_count      = 0;
+int CompileBroker::_total_standard_compile_count = 0;
+
+int CompileBroker::_sum_osr_bytes_compiled       = 0;
+int CompileBroker::_sum_standard_bytes_compiled  = 0;
+int CompileBroker::_sum_nmethod_size             = 0;
+int CompileBroker::_sum_nmethod_code_size        = 0;
+
+CompileQueue* CompileBroker::_method_queue   = NULL;
+CompileTask*  CompileBroker::_task_free_list = NULL;
+
+GrowableArray<CompilerThread*>* CompileBroker::_method_threads = NULL;
+
+// CompileTaskWrapper
+//
+// Assign this task to the current thread.  Deallocate the task
+// when the compilation is complete.
+class CompileTaskWrapper : StackObj {
+public:
+  CompileTaskWrapper(CompileTask* task);
+  ~CompileTaskWrapper();
+};
+
+CompileTaskWrapper::CompileTaskWrapper(CompileTask* task) {
+  CompilerThread* thread = CompilerThread::current();
+  thread->set_task(task);
+  CompileLog*     log  = thread->log();
+  if (log != NULL)  task->log_task_start(log);
+}
+
+CompileTaskWrapper::~CompileTaskWrapper() {
+  CompilerThread* thread = CompilerThread::current();
+  CompileTask* task = thread->task();
+  CompileLog*  log  = thread->log();
+  if (log != NULL)  task->log_task_done(log);
+  thread->set_task(NULL);
+  task->set_code_handle(NULL);
+  DEBUG_ONLY(thread->set_env((ciEnv*)badAddress));
+  if (task->is_blocking()) {
+    MutexLocker notifier(task->lock(), thread);
+    task->mark_complete();
+    // Notify the waiting thread that the compilation has completed.
+    task->lock()->notify_all();
+  } else {
+    task->mark_complete();
+
+    // By convention, the compiling thread is responsible for
+    // recycling a non-blocking CompileTask.
+    CompileBroker::free_task(task);
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileTask::initialize
+void CompileTask::initialize(int compile_id,
+                             methodHandle method,
+                             int osr_bci,
+                             int comp_level,
+                             methodHandle hot_method,
+                             int hot_count,
+                             const char* comment,
+                             bool is_blocking) {
+  assert(!_lock->is_locked(), "bad locking");
+
+  _compile_id = compile_id;
+  _method = JNIHandles::make_global(method);
+  _osr_bci = osr_bci;
+  _is_blocking = is_blocking;
+  _comp_level = comp_level;
+  _num_inlined_bytecodes = 0;
+
+  _is_complete = false;
+  _is_success = false;
+  _code_handle = NULL;
+
+  _hot_method = NULL;
+  _hot_count = hot_count;
+  _time_queued = 0;  // tidy
+  _comment = comment;
+
+  if (LogCompilation) {
+    _time_queued = os::elapsed_counter();
+    if (hot_method.not_null()) {
+      if (hot_method == method) {
+        _hot_method = _method;
+      } else {
+        _hot_method = JNIHandles::make_global(hot_method);
+      }
+    }
+  }
+
+  _next = NULL;
+}
+
+// ------------------------------------------------------------------
+// CompileTask::code/set_code
+nmethod* CompileTask::code() const {
+  if (_code_handle == NULL)  return NULL;
+  return _code_handle->code();
+}
+void CompileTask::set_code(nmethod* nm) {
+  if (_code_handle == NULL && nm == NULL)  return;
+  guarantee(_code_handle != NULL, "");
+  _code_handle->set_code(nm);
+  if (nm == NULL)  _code_handle = NULL;  // drop the handle also
+}
+
+// ------------------------------------------------------------------
+// CompileTask::free
+void CompileTask::free() {
+  set_code(NULL);
+  assert(!_lock->is_locked(), "Should not be locked when freed");
+  if (_hot_method != NULL && _hot_method != _method) {
+    JNIHandles::destroy_global(_hot_method);
+  }
+  JNIHandles::destroy_global(_method);
+}
+
+
+// ------------------------------------------------------------------
+// CompileTask::print
+void CompileTask::print() {
+  tty->print("<CompileTask compile_id=%d ", _compile_id);
+  tty->print("method=");
+  ((methodOop)JNIHandles::resolve(_method))->print_name(tty);
+  tty->print_cr(" osr_bci=%d is_blocking=%s is_complete=%s is_success=%s>",
+             _osr_bci, bool_to_str(_is_blocking),
+             bool_to_str(_is_complete), bool_to_str(_is_success));
+}
+
+// ------------------------------------------------------------------
+// CompileTask::print_line_on_error
+//
+// This function is called by fatal error handler when the thread
+// causing troubles is a compiler thread.
+//
+// Do not grab any lock, do not allocate memory.
+//
+// Otherwise it's the same as CompileTask::print_line()
+//
+void CompileTask::print_line_on_error(outputStream* st, char* buf, int buflen) {
+  methodOop method = (methodOop)JNIHandles::resolve(_method);
+
+  // print compiler name
+  st->print("%s:", CompileBroker::compiler(comp_level())->name());
+
+  // print compilation number
+  st->print("%3d", compile_id());
+
+  // print method attributes
+  const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci;
+  { const char blocking_char  = is_blocking()                      ? 'b' : ' ';
+    const char compile_type   = is_osr                             ? '%' : ' ';
+    const char sync_char      = method->is_synchronized()          ? 's' : ' ';
+    const char exception_char = method->has_exception_handler()    ? '!' : ' ';
+    const char tier_char      =
+      is_highest_tier_compile(comp_level())                        ? ' ' : ('0' + comp_level());
+    st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char);
+  }
+
+  // Use buf to get method name and signature
+  if (method != NULL) st->print("%s", method->name_and_sig_as_C_string(buf, buflen));
+
+  // print osr_bci if any
+  if (is_osr) st->print(" @ %d", osr_bci());
+
+  // print method size
+  st->print_cr(" (%d bytes)", method->code_size());
+}
+
+// ------------------------------------------------------------------
+// CompileTask::print_line
+void CompileTask::print_line() {
+  Thread *thread = Thread::current();
+  methodHandle method(thread,
+                      (methodOop)JNIHandles::resolve(method_handle()));
+  ResourceMark rm(thread);
+
+  ttyLocker ttyl;  // keep the following output all in one block
+
+  // print compiler name if requested
+  if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler(comp_level())->name());
+
+  // print compilation number
+  tty->print("%3d", compile_id());
+
+  // print method attributes
+  const bool is_osr = osr_bci() != CompileBroker::standard_entry_bci;
+  { const char blocking_char  = is_blocking()                      ? 'b' : ' ';
+    const char compile_type   = is_osr                             ? '%' : ' ';
+    const char sync_char      = method->is_synchronized()          ? 's' : ' ';
+    const char exception_char = method->has_exception_handler()    ? '!' : ' ';
+    const char tier_char      =
+      is_highest_tier_compile(comp_level())                        ? ' ' : ('0' + comp_level());
+    tty->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, tier_char);
+  }
+
+  // print method name
+  method->print_short_name(tty);
+
+  // print osr_bci if any
+  if (is_osr) tty->print(" @ %d", osr_bci());
+
+  // print method size
+  tty->print_cr(" (%d bytes)", method->code_size());
+}
+
+
+// ------------------------------------------------------------------
+// CompileTask::log_task
+void CompileTask::log_task(xmlStream* log) {
+  Thread* thread = Thread::current();
+  methodHandle method(thread,
+                      (methodOop)JNIHandles::resolve(method_handle()));
+  ResourceMark rm(thread);
+
+  // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
+  if (_compile_id != 0)   log->print(" compile_id='%d'", _compile_id);
+  if (_osr_bci != CompileBroker::standard_entry_bci) {
+    log->print(" compile_kind='osr'");  // same as nmethod::compile_kind
+  } // else compile_kind='c2c'
+  if (!method.is_null())  log->method(method);
+  if (_osr_bci != CompileBroker::standard_entry_bci) {
+    log->print(" osr_bci='%d'", _osr_bci);
+  }
+  if (_comp_level != CompLevel_highest_tier) {
+    log->print(" level='%d'", _comp_level);
+  }
+  if (_is_blocking) {
+    log->print(" blocking='1'");
+  }
+  log->stamp();
+}
+
+
+// ------------------------------------------------------------------
+// CompileTask::log_task_queued
+void CompileTask::log_task_queued() {
+  Thread* thread = Thread::current();
+  ttyLocker ttyl;
+  ResourceMark rm(thread);
+
+  xtty->begin_elem("task_queued");
+  log_task(xtty);
+  if (_comment != NULL) {
+    xtty->print(" comment='%s'", _comment);
+  }
+  if (_hot_method != NULL) {
+    methodHandle hot(thread,
+                     (methodOop)JNIHandles::resolve(_hot_method));
+    methodHandle method(thread,
+                        (methodOop)JNIHandles::resolve(_method));
+    if (hot() != method()) {
+      xtty->method(hot);
+    }
+  }
+  if (_hot_count != 0) {
+    xtty->print(" hot_count='%d'", _hot_count);
+  }
+  xtty->end_elem();
+}
+
+
+// ------------------------------------------------------------------
+// CompileTask::log_task_start
+void CompileTask::log_task_start(CompileLog* log)   {
+  log->begin_head("task");
+  log_task(log);
+  log->end_head();
+}
+
+
+// ------------------------------------------------------------------
+// CompileTask::log_task_done
+void CompileTask::log_task_done(CompileLog* log) {
+  Thread* thread = Thread::current();
+  methodHandle method(thread,
+                      (methodOop)JNIHandles::resolve(method_handle()));
+  ResourceMark rm(thread);
+
+  // <task_done ... stamp='1.234'>  </task>
+  nmethod* nm = code();
+  log->begin_elem("task_done success='%d' nmsize='%d' count='%d'",
+                  _is_success, nm == NULL ? 0 : nm->instructions_size(),
+                  method->invocation_count());
+  int bec = method->backedge_count();
+  if (bec != 0)  log->print(" backedge_count='%d'", bec);
+  // Note:  "_is_complete" is about to be set, but is not.
+  if (_num_inlined_bytecodes != 0) {
+    log->print(" inlined_bytes='%d'", _num_inlined_bytecodes);
+  }
+  log->stamp();
+  log->end_elem();
+  log->tail("task");
+  log->clear_identities();   // next task will have different CI
+  if (log->unflushed_count() > 2000) {
+    log->flush();
+  }
+  log->mark_file_end();
+}
+
+
+
+// ------------------------------------------------------------------
+// CompileQueue::add
+//
+// Add a CompileTask to a CompileQueue
+void CompileQueue::add(CompileTask* task) {
+  assert(lock()->owned_by_self(), "must own lock");
+
+  task->set_next(NULL);
+
+  if (_last == NULL) {
+    // The compile queue is empty.
+    assert(_first == NULL, "queue is empty");
+    _first = task;
+    _last = task;
+  } else {
+    // Append the task to the queue.
+    assert(_last->next() == NULL, "not last");
+    _last->set_next(task);
+    _last = task;
+  }
+
+  // Mark the method as being in the compile queue.
+  ((methodOop)JNIHandles::resolve(task->method_handle()))->set_queued_for_compilation();
+
+  if (CIPrintCompileQueue) {
+    print();
+  }
+
+  if (LogCompilation && xtty != NULL) {
+    task->log_task_queued();
+  }
+
+  // Notify CompilerThreads that a task is available.
+  lock()->notify();
+}
+
+
+// ------------------------------------------------------------------
+// CompileQueue::get
+//
+// Get the next CompileTask from a CompileQueue
+CompileTask* CompileQueue::get() {
+  MutexLocker locker(lock());
+
+  // Wait for an available CompileTask.
+  while (_first == NULL) {
+    // There is no work to be done right now.  Wait.
+    lock()->wait();
+  }
+
+  CompileTask* task = _first;
+
+  // Update queue first and last
+  _first =_first->next();
+  if (_first == NULL) {
+    _last = NULL;
+  }
+
+  return task;
+
+}
+
+
+// ------------------------------------------------------------------
+// CompileQueue::print
+void CompileQueue::print() {
+  tty->print_cr("Contents of %s", name());
+  tty->print_cr("----------------------");
+  CompileTask* task = _first;
+  while (task != NULL) {
+    task->print_line();
+    task = task->next();
+  }
+  tty->print_cr("----------------------");
+}
+
+CompilerCounters::CompilerCounters(const char* thread_name, int instance, TRAPS) {
+
+  _current_method[0] = '\0';
+  _compile_type = CompileBroker::no_compile;
+
+  if (UsePerfData) {
+    ResourceMark rm;
+
+    // create the thread instance name space string - don't create an
+    // instance subspace if instance is -1 - keeps the adapterThread
+    // counters  from having a ".0" namespace.
+    const char* thread_i = (instance == -1) ? thread_name :
+                      PerfDataManager::name_space(thread_name, instance);
+
+
+    char* name = PerfDataManager::counter_name(thread_i, "method");
+    _perf_current_method =
+               PerfDataManager::create_string_variable(SUN_CI, name,
+                                                       cmname_buffer_length,
+                                                       _current_method, CHECK);
+
+    name = PerfDataManager::counter_name(thread_i, "type");
+    _perf_compile_type = PerfDataManager::create_variable(SUN_CI, name,
+                                                          PerfData::U_None,
+                                                         (jlong)_compile_type,
+                                                          CHECK);
+
+    name = PerfDataManager::counter_name(thread_i, "time");
+    _perf_time = PerfDataManager::create_counter(SUN_CI, name,
+                                                 PerfData::U_Ticks, CHECK);
+
+    name = PerfDataManager::counter_name(thread_i, "compiles");
+    _perf_compiles = PerfDataManager::create_counter(SUN_CI, name,
+                                                     PerfData::U_Events, CHECK);
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::compilation_init
+//
+// Initialize the Compilation object
+void CompileBroker::compilation_init() {
+  _last_method_compiled[0] = '\0';
+
+  // Set the interface to the current compiler(s).
+#ifdef COMPILER1
+  _compilers[0] = new Compiler();
+#ifndef COMPILER2
+  _compilers[1] = _compilers[0];
+#endif
+#endif // COMPILER1
+
+#ifdef COMPILER2
+  _compilers[1] = new C2Compiler();
+#ifndef COMPILER1
+  _compilers[0] = _compilers[1];
+#endif
+#endif // COMPILER2
+
+  // Initialize the CompileTask free list
+  _task_free_list = NULL;
+
+  // Start the CompilerThreads
+  init_compiler_threads(compiler_count());
+
+
+  // totalTime performance counter is always created as it is required
+  // by the implementation of java.lang.management.CompilationMBean.
+  {
+    EXCEPTION_MARK;
+    _perf_total_compilation =
+                 PerfDataManager::create_counter(JAVA_CI, "totalTime",
+                                                 PerfData::U_Ticks, CHECK);
+  }
+
+
+  if (UsePerfData) {
+
+    EXCEPTION_MARK;
+
+    // create the jvmstat performance counters
+    _perf_osr_compilation =
+                 PerfDataManager::create_counter(SUN_CI, "osrTime",
+                                                 PerfData::U_Ticks, CHECK);
+
+    _perf_standard_compilation =
+                 PerfDataManager::create_counter(SUN_CI, "standardTime",
+                                                 PerfData::U_Ticks, CHECK);
+
+    _perf_total_bailout_count =
+                 PerfDataManager::create_counter(SUN_CI, "totalBailouts",
+                                                 PerfData::U_Events, CHECK);
+
+    _perf_total_invalidated_count =
+                 PerfDataManager::create_counter(SUN_CI, "totalInvalidates",
+                                                 PerfData::U_Events, CHECK);
+
+    _perf_total_compile_count =
+                 PerfDataManager::create_counter(SUN_CI, "totalCompiles",
+                                                 PerfData::U_Events, CHECK);
+    _perf_total_osr_compile_count =
+                 PerfDataManager::create_counter(SUN_CI, "osrCompiles",
+                                                 PerfData::U_Events, CHECK);
+
+    _perf_total_standard_compile_count =
+                 PerfDataManager::create_counter(SUN_CI, "standardCompiles",
+                                                 PerfData::U_Events, CHECK);
+
+    _perf_sum_osr_bytes_compiled =
+                 PerfDataManager::create_counter(SUN_CI, "osrBytes",
+                                                 PerfData::U_Bytes, CHECK);
+
+    _perf_sum_standard_bytes_compiled =
+                 PerfDataManager::create_counter(SUN_CI, "standardBytes",
+                                                 PerfData::U_Bytes, CHECK);
+
+    _perf_sum_nmethod_size =
+                 PerfDataManager::create_counter(SUN_CI, "nmethodSize",
+                                                 PerfData::U_Bytes, CHECK);
+
+    _perf_sum_nmethod_code_size =
+                 PerfDataManager::create_counter(SUN_CI, "nmethodCodeSize",
+                                                 PerfData::U_Bytes, CHECK);
+
+    _perf_last_method =
+                 PerfDataManager::create_string_variable(SUN_CI, "lastMethod",
+                                       CompilerCounters::cmname_buffer_length,
+                                       "", CHECK);
+
+    _perf_last_failed_method =
+            PerfDataManager::create_string_variable(SUN_CI, "lastFailedMethod",
+                                       CompilerCounters::cmname_buffer_length,
+                                       "", CHECK);
+
+    _perf_last_invalidated_method =
+        PerfDataManager::create_string_variable(SUN_CI, "lastInvalidatedMethod",
+                                     CompilerCounters::cmname_buffer_length,
+                                     "", CHECK);
+
+    _perf_last_compile_type =
+             PerfDataManager::create_variable(SUN_CI, "lastType",
+                                              PerfData::U_None,
+                                              (jlong)CompileBroker::no_compile,
+                                              CHECK);
+
+    _perf_last_compile_size =
+             PerfDataManager::create_variable(SUN_CI, "lastSize",
+                                              PerfData::U_Bytes,
+                                              (jlong)CompileBroker::no_compile,
+                                              CHECK);
+
+
+    _perf_last_failed_type =
+             PerfDataManager::create_variable(SUN_CI, "lastFailedType",
+                                              PerfData::U_None,
+                                              (jlong)CompileBroker::no_compile,
+                                              CHECK);
+
+    _perf_last_invalidated_type =
+         PerfDataManager::create_variable(SUN_CI, "lastInvalidatedType",
+                                          PerfData::U_None,
+                                          (jlong)CompileBroker::no_compile,
+                                          CHECK);
+  }
+
+  _initialized = true;
+}
+
+
+
+// ------------------------------------------------------------------
+// CompileBroker::make_compiler_thread
+CompilerThread* CompileBroker::make_compiler_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, TRAPS) {
+  CompilerThread* compiler_thread = NULL;
+
+  klassOop k =
+    SystemDictionary::resolve_or_fail(vmSymbolHandles::java_lang_Thread(),
+                                      true, CHECK_0);
+  instanceKlassHandle klass (THREAD, k);
+  instanceHandle thread_oop = klass->allocate_instance_handle(CHECK_0);
+  Handle string = java_lang_String::create_from_str(name, CHECK_0);
+
+  // 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_0);
+
+  {
+    MutexLocker mu(Threads_lock, THREAD);
+    compiler_thread = new CompilerThread(queue, counters);
+    // At this point the new CompilerThread data-races with this startup
+    // thread (which I believe is the primoridal thread and NOT the VM
+    // thread).  This means Java bytecodes being executed at startup can
+    // queue compile jobs which will run at whatever default priority the
+    // newly created CompilerThread runs at.
+
+
+    // 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 (compiler_thread == NULL || compiler_thread->osthread() == NULL){
+      vm_exit_during_initialization("java.lang.OutOfMemoryError",
+                                    "unable to create new native thread");
+    }
+
+    java_lang_Thread::set_thread(thread_oop(), compiler_thread);
+
+    // Note that this only sets the JavaThread _priority field, which by
+    // definition is limited to Java priorities and not OS priorities.
+    // The os-priority is set in the CompilerThread startup code itself
+    java_lang_Thread::set_priority(thread_oop(), NearMaxPriority);
+    // CLEANUP PRIORITIES: This -if- statement hids a bug whereby the compiler
+    // threads never have their OS priority set.  The assumption here is to
+    // enable the Performance group to do flag tuning, figure out a suitable
+    // CompilerThreadPriority, and then remove this 'if' statement (and
+    // comment) and unconditionally set the priority.
+
+    // Compiler Threads should be at the highest Priority
+    if ( CompilerThreadPriority != -1 )
+      os::set_native_priority( compiler_thread, CompilerThreadPriority );
+    else
+      os::set_native_priority( compiler_thread, os::java_to_os_priority[NearMaxPriority]);
+
+      // Note that I cannot call os::set_priority because it expects Java
+      // priorities and I am *explicitly* using OS priorities so that it's
+      // possible to set the compiler thread priority higher than any Java
+      // thread.
+
+    java_lang_Thread::set_daemon(thread_oop());
+
+    compiler_thread->set_threadObj(thread_oop());
+    Threads::add(compiler_thread);
+    Thread::start(compiler_thread);
+  }
+  // Let go of Threads_lock before yielding
+  os::yield(); // make sure that the compiler thread is started early (especially helpful on SOLARIS)
+
+  return compiler_thread;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::init_compiler_threads
+//
+// Initialize the compilation queue
+void CompileBroker::init_compiler_threads(int compiler_count) {
+  EXCEPTION_MARK;
+
+  _method_queue  = new CompileQueue("MethodQueue",  MethodCompileQueue_lock);
+  _method_threads =
+    new (ResourceObj::C_HEAP) GrowableArray<CompilerThread*>(compiler_count, true);
+
+  char name_buffer[256];
+  int i;
+  for (i = 0; i < compiler_count; i++) {
+    // Create a name for our thread.
+    sprintf(name_buffer, "CompilerThread%d", i);
+    CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
+
+    CompilerThread* new_thread = make_compiler_thread(name_buffer, _method_queue, counters, CHECK);
+    _method_threads->append(new_thread);
+  }
+  if (UsePerfData) {
+    PerfDataManager::create_constant(SUN_CI, "threads", PerfData::U_Bytes,
+                                     compiler_count, CHECK);
+  }
+}
+
+// ------------------------------------------------------------------
+// CompileBroker::is_idle
+bool CompileBroker::is_idle() {
+  if (!_method_queue->is_empty()) {
+    return false;
+  } else {
+    int num_threads = _method_threads->length();
+    for (int i=0; i<num_threads; i++) {
+      if (_method_threads->at(i)->task() != NULL) {
+        return false;
+      }
+    }
+
+    // No pending or active compilations.
+    return true;
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::compile_method
+//
+// Request compilation of a method.
+void CompileBroker::compile_method_base(methodHandle method,
+                                        int osr_bci,
+                                        int comp_level,
+                                        methodHandle hot_method,
+                                        int hot_count,
+                                        const char* comment,
+                                        TRAPS) {
+  // do nothing if compiler thread(s) is not available
+  if (!_initialized ) {
+    return;
+  }
+
+  guarantee(!method->is_abstract(), "cannot compile abstract methods");
+  assert(method->method_holder()->klass_part()->oop_is_instance(),
+         "sanity check");
+  assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(),
+         "method holder must be initialized");
+
+  if (CIPrintRequests) {
+    tty->print("request: ");
+    method->print_short_name(tty);
+    if (osr_bci != InvocationEntryBci) {
+      tty->print(" osr_bci: %d", osr_bci);
+    }
+    tty->print(" comment: %s count: %d", comment, hot_count);
+    if (!hot_method.is_null()) {
+      tty->print(" hot: ");
+      if (hot_method() != method()) {
+          hot_method->print_short_name(tty);
+      } else {
+        tty->print("yes");
+      }
+    }
+    tty->cr();
+  }
+
+  // A request has been made for compilation.  Before we do any
+  // real work, check to see if the method has been compiled
+  // in the meantime with a definitive result.
+  if (compilation_is_complete(method, osr_bci, comp_level)) {
+    return;
+  }
+
+  // If this method is already in the compile queue, then
+  // we do not block the current thread.
+  if (compilation_is_in_queue(method, osr_bci)) {
+    // We may want to decay our counter a bit here to prevent
+    // multiple denied requests for compilation.  This is an
+    // open compilation policy issue. Note: The other possibility,
+    // in the case that this is a blocking compile request, is to have
+    // all subsequent blocking requesters wait for completion of
+    // ongoing compiles. Note that in this case we'll need a protocol
+    // for freeing the associated compile tasks. [Or we could have
+    // a single static monitor on which all these waiters sleep.]
+    return;
+  }
+
+  // Outputs from the following MutexLocker block:
+  CompileTask* task     = NULL;
+  bool         blocking = false;
+
+  // Acquire our lock.
+  {
+    MutexLocker locker(_method_queue->lock(), THREAD);
+
+    // Make sure the method has not slipped into the queues since
+    // last we checked; note that those checks were "fast bail-outs".
+    // Here we need to be more careful, see 14012000 below.
+    if (compilation_is_in_queue(method, osr_bci)) {
+      return;
+    }
+
+    // We need to check again to see if the compilation has
+    // completed.  A previous compilation may have registered
+    // some result.
+    if (compilation_is_complete(method, osr_bci, comp_level)) {
+      return;
+    }
+
+    // We now know that this compilation is not pending, complete,
+    // or prohibited.  Assign a compile_id to this compilation
+    // and check to see if it is in our [Start..Stop) range.
+    uint compile_id = assign_compile_id(method, osr_bci);
+    if (compile_id == 0) {
+      // The compilation falls outside the allowed range.
+      return;
+    }
+
+    // Should this thread wait for completion of the compile?
+    blocking = is_compile_blocking(method, osr_bci);
+
+    // We will enter the compilation in the queue.
+    // 14012000: Note that this sets the queued_for_compile bits in
+    // the target method. We can now reason that a method cannot be
+    // queued for compilation more than once, as follows:
+    // Before a thread queues a task for compilation, it first acquires
+    // the compile queue lock, then checks if the method's queued bits
+    // are set or it has already been compiled. Thus there can not be two
+    // instances of a compilation task for the same method on the
+    // compilation queue. Consider now the case where the compilation
+    // thread has already removed a task for that method from the queue
+    // and is in the midst of compiling it. In this case, the
+    // queued_for_compile bits must be set in the method (and these
+    // will be visible to the current thread, since the bits were set
+    // under protection of the compile queue lock, which we hold now.
+    // When the compilation completes, the compiler thread first sets
+    // the compilation result and then clears the queued_for_compile
+    // bits. Neither of these actions are protected by a barrier (or done
+    // under the protection of a lock), so the only guarantee we have
+    // (on machines with TSO (Total Store Order)) is that these values
+    // will update in that order. As a result, the only combinations of
+    // these bits that the current thread will see are, in temporal order:
+    // <RESULT, QUEUE> :
+    //     <0, 1> : in compile queue, but not yet compiled
+    //     <1, 1> : compiled but queue bit not cleared
+    //     <1, 0> : compiled and queue bit cleared
+    // Because we first check the queue bits then check the result bits,
+    // we are assured that we cannot introduce a duplicate task.
+    // Note that if we did the tests in the reverse order (i.e. check
+    // result then check queued bit), we could get the result bit before
+    // the compilation completed, and the queue bit after the compilation
+    // completed, and end up introducing a "duplicate" (redundant) task.
+    // In that case, the compiler thread should first check if a method
+    // has already been compiled before trying to compile it.
+    // NOTE: in the event that there are multiple compiler threads and
+    // there is de-optimization/recompilation, things will get hairy,
+    // and in that case it's best to protect both the testing (here) of
+    // these bits, and their updating (here and elsewhere) under a
+    // common lock.
+    task = create_compile_task(_method_queue,
+                               compile_id, method,
+                               osr_bci, comp_level,
+                               hot_method, hot_count, comment,
+                               blocking);
+  }
+
+  if (blocking) {
+    wait_for_completion(task);
+  }
+}
+
+
+nmethod* CompileBroker::compile_method(methodHandle method, int osr_bci,
+                                       methodHandle hot_method, int hot_count,
+                                       const char* comment, TRAPS) {
+  // make sure arguments make sense
+  assert(method->method_holder()->klass_part()->oop_is_instance(), "not an instance method");
+  assert(osr_bci == InvocationEntryBci || (0 <= osr_bci && osr_bci < method->code_size()), "bci out of range");
+  assert(!method->is_abstract() && (osr_bci == InvocationEntryBci || !method->is_native()), "cannot compile abstract/native methods");
+  assert(!instanceKlass::cast(method->method_holder())->is_not_initialized(), "method holder must be initialized");
+
+  int comp_level = CompilationPolicy::policy()->compilation_level(method, osr_bci);
+
+#ifdef TIERED
+  if (TieredCompilation && StressTieredRuntime) {
+    static int flipper = 0;
+    if (is_even(flipper++)) {
+      comp_level = CompLevel_fast_compile;
+    } else {
+      comp_level = CompLevel_full_optimization;
+    }
+  }
+#ifdef SPARC
+  // QQQ FIX ME
+  // C2 only returns long results in G1 and c1 doesn't understand so disallow c2
+  // compiles of long results
+  if (TieredCompilation && method()->result_type() == T_LONG) {
+    comp_level = CompLevel_fast_compile;
+  }
+#endif // SPARC
+#endif // TIERED
+
+  // return quickly if possible
+
+  // lock, make sure that the compilation
+  // isn't prohibited in a straightforward way.
+
+  if (compiler(comp_level) == NULL || compilation_is_prohibited(method, osr_bci, comp_level)) {
+    return NULL;
+  }
+
+  if (osr_bci == InvocationEntryBci) {
+    // standard compilation
+    nmethod* method_code = method->code();
+    if (method_code != NULL
+#ifdef TIERED
+       && ( method_code->is_compiled_by_c2() || comp_level == CompLevel_fast_compile )
+#endif // TIERED
+      ) {
+      return method_code;
+    }
+    if (method->is_not_compilable(comp_level)) return NULL;
+  } else {
+    // osr compilation
+#ifndef TIERED
+    // seems like an assert of dubious value
+    assert(comp_level == CompLevel_full_optimization,
+           "all OSR compiles are assumed to be at a single compilation lavel");
+#endif // TIERED
+    nmethod* nm = method->lookup_osr_nmethod_for(osr_bci);
+    if (nm != NULL) return nm;
+    if (method->is_not_osr_compilable()) return NULL;
+  }
+
+  assert(!HAS_PENDING_EXCEPTION, "No exception should be present");
+  // some prerequisites that are compiler specific
+  if (compiler(comp_level)->is_c2()) {
+    method->constants()->resolve_string_constants(CHECK_0);
+    // Resolve all classes seen in the signature of the method
+    // we are compiling.
+    methodOopDesc::load_signature_classes(method, CHECK_0);
+  }
+
+  // If the method is native, do the lookup in the thread requesting
+  // the compilation. Native lookups can load code, which is not
+  // permitted during compilation.
+  //
+  // Note: A native method implies non-osr compilation which is
+  //       checked with an assertion at the entry of this method.
+  if (method->is_native()) {
+    bool in_base_library;
+    address adr = NativeLookup::lookup(method, in_base_library, THREAD);
+    if (HAS_PENDING_EXCEPTION) {
+      // In case of an exception looking up the method, we just forget
+      // about it. The interpreter will kick-in and throw the exception.
+      method->set_not_compilable(); // implies is_not_osr_compilable()
+      CLEAR_PENDING_EXCEPTION;
+      return NULL;
+    }
+    assert(method->has_native_function(), "must have native code by now");
+  }
+
+  // RedefineClasses() has replaced this method; just return
+  if (method->is_old()) {
+    return NULL;
+  }
+
+  // JVMTI -- post_compile_event requires jmethod_id() that may require
+  // a lock the compiling thread can not acquire. Prefetch it here.
+  if (JvmtiExport::should_post_compiled_method_load()) {
+    method->jmethod_id();
+  }
+
+  // do the compilation
+  if (method->is_native()) {
+    if (!PreferInterpreterNativeStubs) {
+      (void) AdapterHandlerLibrary::create_native_wrapper(method);
+    } else {
+      return NULL;
+    }
+  } else {
+    compile_method_base(method, osr_bci, comp_level, hot_method, hot_count, comment, CHECK_0);
+  }
+
+  // return requested nmethod
+  return osr_bci  == InvocationEntryBci ? method->code() : method->lookup_osr_nmethod_for(osr_bci);
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::compilation_is_complete
+//
+// See if compilation of this method is already complete.
+bool CompileBroker::compilation_is_complete(methodHandle method,
+                                            int          osr_bci,
+                                            int          comp_level) {
+  bool is_osr = (osr_bci != standard_entry_bci);
+  if (is_osr) {
+    if (method->is_not_osr_compilable()) {
+      return true;
+    } else {
+      nmethod* result = method->lookup_osr_nmethod_for(osr_bci);
+      return (result != NULL);
+    }
+  } else {
+    if (method->is_not_compilable(comp_level)) {
+      return true;
+    } else {
+      nmethod* result = method->code();
+      if (result == NULL) return false;
+#ifdef TIERED
+      if (comp_level == CompLevel_fast_compile) {
+        // At worst the code is from c1
+        return true;
+      }
+      // comp level must be full opt
+      return result->is_compiled_by_c2();
+#endif // TIERED
+      return true;
+    }
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::compilation_is_in_queue
+//
+// See if this compilation is already requested.
+//
+// Implementation note: there is only a single "is in queue" bit
+// for each method.  This means that the check below is overly
+// conservative in the sense that an osr compilation in the queue
+// will block a normal compilation from entering the queue (and vice
+// versa).  This can be remedied by a full queue search to disambiguate
+// cases.  If it is deemed profitible, this may be done.
+bool CompileBroker::compilation_is_in_queue(methodHandle method,
+                                          int          osr_bci) {
+  return method->queued_for_compilation();
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::compilation_is_prohibited
+//
+// See if this compilation is not allowed.
+bool CompileBroker::compilation_is_prohibited(methodHandle method, int osr_bci, int comp_level) {
+  bool is_native = method->is_native();
+  // Some compilers may not support the compilation of natives.
+  // QQQ this needs some work ought to only record not compilable at
+  // the specified level
+  if (is_native &&
+      (!CICompileNatives || !compiler(comp_level)->supports_native())) {
+    method->set_not_compilable();
+    return true;
+  }
+
+  bool is_osr = (osr_bci != standard_entry_bci);
+  // Some compilers may not support on stack replacement.
+  if (is_osr &&
+      (!CICompileOSR || !compiler(comp_level)->supports_osr())) {
+    method->set_not_osr_compilable();
+    return true;
+  }
+
+  // The method may be explicitly excluded by the user.
+  bool quietly;
+  if (CompilerOracle::should_exclude(method, quietly)) {
+    if (!quietly) {
+      // This does not happen quietly...
+      ResourceMark rm;
+      tty->print("### Excluding %s:%s",
+                 method->is_native() ? "generation of native wrapper" : "compile",
+                 (method->is_static() ? " static" : ""));
+      method->print_short_name(tty);
+      tty->cr();
+    }
+    method->set_not_compilable();
+  }
+
+  return false;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::assign_compile_id
+//
+// Assign a serialized id number to this compilation request.  If the
+// number falls out of the allowed range, return a 0.  OSR
+// compilations may be numbered separately from regular compilations
+// if certain debugging flags are used.
+uint CompileBroker::assign_compile_id(methodHandle method, int osr_bci) {
+  assert(_method_queue->lock()->owner() == JavaThread::current(),
+         "must hold the compilation queue lock");
+  bool is_osr = (osr_bci != standard_entry_bci);
+  assert(!method->is_native(), "no longer compile natives");
+  uint id;
+  if (CICountOSR && is_osr) {
+    id = ++_osr_compilation_id;
+    if ((uint)CIStartOSR <= id && id < (uint)CIStopOSR) {
+      return id;
+    }
+  } else {
+    id = ++_compilation_id;
+    if ((uint)CIStart <= id && id < (uint)CIStop) {
+      return id;
+    }
+  }
+
+  // Method was not in the appropriate compilation range.
+  method->set_not_compilable();
+  return 0;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::is_compile_blocking
+//
+// Should the current thread be blocked until this compilation request
+// has been fulfilled?
+bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
+  return !BackgroundCompilation;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::preload_classes
+void CompileBroker::preload_classes(methodHandle method, TRAPS) {
+  // Move this code over from c1_Compiler.cpp
+  ShouldNotReachHere();
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::create_compile_task
+//
+// Create a CompileTask object representing the current request for
+// compilation.  Add this task to the queue.
+CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
+                                              int           compile_id,
+                                              methodHandle  method,
+                                              int           osr_bci,
+                                              int           comp_level,
+                                              methodHandle  hot_method,
+                                              int           hot_count,
+                                              const char*   comment,
+                                              bool          blocking) {
+  CompileTask* new_task = allocate_task();
+  new_task->initialize(compile_id, method, osr_bci, comp_level,
+                       hot_method, hot_count, comment,
+                       blocking);
+  queue->add(new_task);
+  return new_task;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::allocate_task
+//
+// Allocate a CompileTask, from the free list if possible.
+CompileTask* CompileBroker::allocate_task() {
+  MutexLocker locker(CompileTaskAlloc_lock);
+  CompileTask* task = NULL;
+  if (_task_free_list != NULL) {
+    task = _task_free_list;
+    _task_free_list = task->next();
+    task->set_next(NULL);
+  } else {
+    task = new CompileTask();
+    task->set_next(NULL);
+  }
+  return task;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::free_task
+//
+// Add a task to the free list.
+void CompileBroker::free_task(CompileTask* task) {
+  MutexLocker locker(CompileTaskAlloc_lock);
+  task->free();
+  task->set_next(_task_free_list);
+  _task_free_list = task;
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::wait_for_completion
+//
+// Wait for the given method CompileTask to complete.
+void CompileBroker::wait_for_completion(CompileTask* task) {
+  if (CIPrintCompileQueue) {
+    tty->print_cr("BLOCKING FOR COMPILE");
+  }
+
+  assert(task->is_blocking(), "can only wait on blocking task");
+
+  JavaThread *thread = JavaThread::current();
+  thread->set_blocked_on_compilation(true);
+
+  methodHandle method(thread,
+                      (methodOop)JNIHandles::resolve(task->method_handle()));
+  {
+    MutexLocker waiter(task->lock(), thread);
+
+    while (!task->is_complete())
+      task->lock()->wait();
+  }
+  // It is harmless to check this status without the lock, because
+  // completion is a stable property (until the task object is recycled).
+  assert(task->is_complete(), "Compilation should have completed");
+  assert(task->code_handle() == NULL, "must be reset");
+
+  thread->set_blocked_on_compilation(false);
+
+  // By convention, the waiter is responsible for recycling a
+  // blocking CompileTask. Since there is only one waiter ever
+  // waiting on a CompileTask, we know that no one else will
+  // be using this CompileTask; we can free it.
+  free_task(task);
+}
+
+// ------------------------------------------------------------------
+// CompileBroker::compiler_thread_loop
+//
+// The main loop run by a CompilerThread.
+void CompileBroker::compiler_thread_loop() {
+  CompilerThread* thread = CompilerThread::current();
+  CompileQueue* queue = thread->queue();
+
+  // For the thread that initializes the ciObjectFactory
+  // this resource mark holds all the shared objects
+  ResourceMark rm;
+
+  // First thread to get here will initialize the compiler interface
+
+  if (!ciObjectFactory::is_initialized()) {
+    ASSERT_IN_VM;
+    MutexLocker only_one (CompileThread_lock, thread);
+    if (!ciObjectFactory::is_initialized()) {
+      ciObjectFactory::initialize();
+    }
+  }
+
+  // Open a log.
+  if (LogCompilation) {
+    init_compiler_thread_log();
+  }
+  CompileLog* log = thread->log();
+  if (log != NULL) {
+    log->begin_elem("start_compile_thread thread='" UINTX_FORMAT "' process='%d'",
+                    os::current_thread_id(),
+                    os::current_process_id());
+    log->stamp();
+    log->end_elem();
+  }
+
+  while (true) {
+    {
+      // We need this HandleMark to avoid leaking VM handles.
+      HandleMark hm(thread);
+      if (CodeCache::unallocated_capacity() < CodeCacheMinimumFreeSpace) {
+        // The CodeCache is full.  Print out warning and disable compilation.
+        UseInterpreter = true;
+        if (UseCompiler || AlwaysCompileLoopMethods ) {
+          if (log != NULL) {
+            log->begin_elem("code_cache_full");
+            log->stamp();
+            log->end_elem();
+          }
+#ifndef PRODUCT
+          warning("CodeCache is full. Compiler has been disabled");
+          if (CompileTheWorld || ExitOnFullCodeCache) {
+            before_exit(thread);
+            exit_globals(); // will delete tty
+            vm_direct_exit(CompileTheWorld ? 0 : 1);
+          }
+#endif
+          UseCompiler               = false;
+          AlwaysCompileLoopMethods  = false;
+        }
+      }
+
+      CompileTask* task = queue->get();
+
+      // Give compiler threads an extra quanta.  They tend to be bursty and
+      // this helps the compiler to finish up the job.
+      if( CompilerThreadHintNoPreempt )
+        os::hint_no_preempt();
+
+      // trace per thread time and compile statistics
+      CompilerCounters* counters = ((CompilerThread*)thread)->counters();
+      PerfTraceTimedEvent(counters->time_counter(), counters->compile_counter());
+
+      // Assign the task to the current thread.  Mark this compilation
+      // thread as active for the profiler.
+      CompileTaskWrapper ctw(task);
+      nmethodLocker result_handle;  // (handle for the nmethod produced by this task)
+      task->set_code_handle(&result_handle);
+      methodHandle method(thread,
+                     (methodOop)JNIHandles::resolve(task->method_handle()));
+
+      // Never compile a method if breakpoints are present in it
+      if (method()->number_of_breakpoints() == 0) {
+        // Compile the method.
+        if (UseCompiler || AlwaysCompileLoopMethods) {
+#ifdef COMPILER1
+          // Allow repeating compilations for the purpose of benchmarking
+          // compile speed. This is not useful for customers.
+          if (CompilationRepeat != 0) {
+            int compile_count = CompilationRepeat;
+            while (compile_count > 0) {
+              invoke_compiler_on_method(task);
+              nmethod* nm = method->code();
+              if (nm != NULL) {
+                nm->make_zombie();
+                method->clear_code();
+              }
+              compile_count--;
+            }
+          }
+#endif /* COMPILER1 */
+          invoke_compiler_on_method(task);
+        } else {
+          // After compilation is disabled, remove remaining methods from queue
+          method->clear_queued_for_compilation();
+        }
+      }
+    }
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::init_compiler_thread_log
+//
+// Set up state required by +LogCompilation.
+void CompileBroker::init_compiler_thread_log() {
+    CompilerThread* thread = CompilerThread::current();
+    char  fileBuf[4*K];
+    FILE* fp = NULL;
+    char* file = NULL;
+    intx thread_id = os::current_thread_id();
+    for (int try_temp_dir = 1; try_temp_dir >= 0; try_temp_dir--) {
+      const char* dir = (try_temp_dir ? os::get_temp_directory() : NULL);
+      if (dir == NULL)  dir = "";
+      sprintf(fileBuf, "%shs_c" UINTX_FORMAT "_pid%u.log",
+              dir, thread_id, os::current_process_id());
+      fp = fopen(fileBuf, "at");
+      if (fp != NULL) {
+        file = NEW_C_HEAP_ARRAY(char, strlen(fileBuf)+1);
+        strcpy(file, fileBuf);
+        break;
+      }
+    }
+    if (fp == NULL) {
+      warning("Cannot open log file: %s", fileBuf);
+    } else {
+      if (LogCompilation && Verbose)
+        tty->print_cr("Opening compilation log %s", file);
+      CompileLog* log = new(ResourceObj::C_HEAP) CompileLog(file, fp, thread_id);
+      thread->init_log(log);
+
+      if (xtty != NULL) {
+        ttyLocker ttyl;
+
+        // Record any per thread log files
+        xtty->elem("thread_logfile thread='%d' filename='%s'", thread_id, file);
+      }
+    }
+}
+
+// ------------------------------------------------------------------
+// CompileBroker::set_should_block
+//
+// Set _should_block.
+// Call this from the VM, with Threads_lock held and a safepoint requested.
+void CompileBroker::set_should_block() {
+  assert(Threads_lock->owner() == Thread::current(), "must have threads lock");
+  assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint already");
+#ifndef PRODUCT
+  if (PrintCompilation && (Verbose || WizardMode))
+    tty->print_cr("notifying compiler thread pool to block");
+#endif
+  _should_block = true;
+}
+
+// ------------------------------------------------------------------
+// CompileBroker::maybe_block
+//
+// Call this from the compiler at convenient points, to poll for _should_block.
+void CompileBroker::maybe_block() {
+  if (_should_block) {
+#ifndef PRODUCT
+    if (PrintCompilation && (Verbose || WizardMode))
+      tty->print_cr("compiler thread " INTPTR_FORMAT " poll detects block request", Thread::current());
+#endif
+    ThreadInVMfromNative tivfn(JavaThread::current());
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::invoke_compiler_on_method
+//
+// Compile a method.
+//
+void CompileBroker::invoke_compiler_on_method(CompileTask* task) {
+  if (PrintCompilation) {
+    ResourceMark rm;
+    task->print_line();
+  }
+  elapsedTimer time;
+
+  CompilerThread* thread = CompilerThread::current();
+  ResourceMark rm(thread);
+
+  // Common flags.
+  uint compile_id = task->compile_id();
+  int osr_bci = task->osr_bci();
+  bool is_osr = (osr_bci != standard_entry_bci);
+  bool should_log = (thread->log() != NULL);
+  bool should_break = false;
+  {
+    // create the handle inside it's own block so it can't
+    // accidentally be referenced once the thread transitions to
+    // native.  The NoHandleMark before the transition should catch
+    // any cases where this occurs in the future.
+    methodHandle method(thread,
+                        (methodOop)JNIHandles::resolve(task->method_handle()));
+    should_break = check_break_at(method, compile_id, is_osr);
+    if (should_log && !CompilerOracle::should_log(method)) {
+      should_log = false;
+    }
+    assert(!method->is_native(), "no longer compile natives");
+
+    // Save information about this method in case of failure.
+    set_last_compile(thread, method, is_osr, task->comp_level());
+
+    DTRACE_METHOD_COMPILE_BEGIN_PROBE(compiler(task->comp_level()), method);
+  }
+
+  // Allocate a new set of JNI handles.
+  push_jni_handle_block();
+  jobject target_handle = JNIHandles::make_local(thread, JNIHandles::resolve(task->method_handle()));
+  int compilable = ciEnv::MethodCompilable;
+  {
+    int system_dictionary_modification_counter;
+    {
+      MutexLocker locker(Compile_lock, thread);
+      system_dictionary_modification_counter = SystemDictionary::number_of_modifications();
+    }
+
+    NoHandleMark  nhm;
+    ThreadToNativeFromVM ttn(thread);
+
+    ciEnv ci_env(task, system_dictionary_modification_counter);
+    if (should_break) {
+      ci_env.set_break_at_compile(true);
+    }
+    if (should_log) {
+      ci_env.set_log(thread->log());
+    }
+    assert(thread->env() == &ci_env, "set by ci_env");
+    // The thread-env() field is cleared in ~CompileTaskWrapper.
+
+    ciMethod* target = ci_env.get_method_from_handle(target_handle);
+
+    TraceTime t1("compilation", &time);
+
+    compiler(task->comp_level())->compile_method(&ci_env, target, osr_bci);
+
+    if (!ci_env.failing() && task->code() == NULL) {
+      //assert(false, "compiler should always document failure");
+      // The compiler elected, without comment, not to register a result.
+      // Do not attempt further compilations of this method.
+      ci_env.record_method_not_compilable("compile failed");
+    }
+
+    if (ci_env.failing()) {
+      // Copy this bit to the enclosing block:
+      compilable = ci_env.compilable();
+      if (PrintCompilation) {
+        const char* reason = ci_env.failure_reason();
+        if (compilable == ciEnv::MethodCompilable_not_at_tier) {
+          if (is_highest_tier_compile(ci_env.comp_level())) {
+            // Already at highest tier, promote to not compilable.
+            compilable = ciEnv::MethodCompilable_never;
+          } else {
+            tty->print_cr("%3d   COMPILE SKIPPED: %s (retry at different tier)", compile_id, reason);
+          }
+        }
+
+        if (compilable == ciEnv::MethodCompilable_never) {
+          tty->print_cr("%3d   COMPILE SKIPPED: %s (not retryable)", compile_id, reason);
+        } else if (compilable == ciEnv::MethodCompilable) {
+          tty->print_cr("%3d   COMPILE SKIPPED: %s", compile_id, reason);
+        }
+      }
+    } else {
+      task->mark_success();
+      task->set_num_inlined_bytecodes(ci_env.num_inlined_bytecodes());
+    }
+  }
+  pop_jni_handle_block();
+
+  methodHandle method(thread,
+                      (methodOop)JNIHandles::resolve(task->method_handle()));
+
+  DTRACE_METHOD_COMPILE_END_PROBE(compiler(task->comp_level()), method, task->is_success());
+
+  collect_statistics(thread, time, task);
+
+  if (compilable == ciEnv::MethodCompilable_never) {
+    if (is_osr) {
+      method->set_not_osr_compilable();
+    } else {
+      method->set_not_compilable();
+    }
+  } else if (compilable == ciEnv::MethodCompilable_not_at_tier) {
+    method->set_not_compilable(task->comp_level());
+  }
+
+  // Note that the queued_for_compilation bits are cleared without
+  // protection of a mutex. [They were set by the requester thread,
+  // when adding the task to the complie queue -- at which time the
+  // compile queue lock was held. Subsequently, we acquired the compile
+  // queue lock to get this task off the compile queue; thus (to belabour
+  // the point somewhat) our clearing of the bits must be occurring
+  // only after the setting of the bits. See also 14012000 above.
+  method->clear_queued_for_compilation();
+
+#ifdef ASSERT
+  if (CollectedHeap::fired_fake_oom()) {
+    // The current compile received a fake OOM during compilation so
+    // go ahead and exit the VM since the test apparently succeeded
+    tty->print_cr("*** Shutting down VM after successful fake OOM");
+    vm_exit(0);
+  }
+#endif
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::set_last_compile
+//
+// Record this compilation for debugging purposes.
+void CompileBroker::set_last_compile(CompilerThread* thread, methodHandle method, bool is_osr, int comp_level) {
+  ResourceMark rm;
+  char* method_name = method->name()->as_C_string();
+  strncpy(_last_method_compiled, method_name, CompileBroker::name_buffer_length);
+  char current_method[CompilerCounters::cmname_buffer_length];
+  size_t maxLen = CompilerCounters::cmname_buffer_length;
+
+  if (UsePerfData) {
+    const char* class_name = method->method_holder()->klass_part()->name()->as_C_string();
+
+    size_t s1len = strlen(class_name);
+    size_t s2len = strlen(method_name);
+
+    // check if we need to truncate the string
+    if (s1len + s2len + 2 > maxLen) {
+
+      // the strategy is to lop off the leading characters of the
+      // class name and the trailing characters of the method name.
+
+      if (s2len + 2 > maxLen) {
+        // lop of the entire class name string, let snprintf handle
+        // truncation of the method name.
+        class_name += s1len; // null string
+      }
+      else {
+        // lop off the extra characters from the front of the class name
+        class_name += ((s1len + s2len + 2) - maxLen);
+      }
+    }
+
+    jio_snprintf(current_method, maxLen, "%s %s", class_name, method_name);
+  }
+
+  if (CICountOSR && is_osr) {
+    _last_compile_type = osr_compile;
+  } else {
+    _last_compile_type = normal_compile;
+  }
+  _last_compile_level = comp_level;
+
+  if (UsePerfData) {
+    CompilerCounters* counters = thread->counters();
+    counters->set_current_method(current_method);
+    counters->set_compile_type((jlong)_last_compile_type);
+  }
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::push_jni_handle_block
+//
+// Push on a new block of JNI handles.
+void CompileBroker::push_jni_handle_block() {
+  JavaThread* thread = JavaThread::current();
+
+  // Allocate a new block for JNI handles.
+  // Inlined code from jni_PushLocalFrame()
+  JNIHandleBlock* java_handles = thread->active_handles();
+  JNIHandleBlock* compile_handles = JNIHandleBlock::allocate_block(thread);
+  assert(compile_handles != NULL && java_handles != NULL, "should not be NULL");
+  compile_handles->set_pop_frame_link(java_handles);  // make sure java handles get gc'd.
+  thread->set_active_handles(compile_handles);
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::pop_jni_handle_block
+//
+// Pop off the current block of JNI handles.
+void CompileBroker::pop_jni_handle_block() {
+  JavaThread* thread = JavaThread::current();
+
+  // Release our JNI handle block
+  JNIHandleBlock* compile_handles = thread->active_handles();
+  JNIHandleBlock* java_handles = compile_handles->pop_frame_link();
+  thread->set_active_handles(java_handles);
+  compile_handles->set_pop_frame_link(NULL);
+  JNIHandleBlock::release_block(compile_handles, thread); // may block
+}
+
+
+// ------------------------------------------------------------------
+// CompileBroker::check_break_at
+//
+// Should the compilation break at the current compilation.
+bool CompileBroker::check_break_at(methodHandle method, int compile_id, bool is_osr) {
+  if (CICountOSR && is_osr && (compile_id == CIBreakAtOSR)) {
+    return true;
+  } else if( CompilerOracle::should_break_at(method) ) { // break when compiling
+    return true;
+  } else {
+    return (compile_id == CIBreakAt);
+  }
+}
+
+// ------------------------------------------------------------------
+// CompileBroker::collect_statistics
+//
+// Collect statistics about the compilation.
+
+void CompileBroker::collect_statistics(CompilerThread* thread, elapsedTimer time, CompileTask* task) {
+  bool success = task->is_success();
+  methodHandle method (thread, (methodOop)JNIHandles::resolve(task->method_handle()));
+  uint compile_id = task->compile_id();
+  bool is_osr = (task->osr_bci() != standard_entry_bci);
+  nmethod* code = task->code();
+  CompilerCounters* counters = thread->counters();
+
+  assert(code == NULL || code->is_locked_by_vm(), "will survive the MutexLocker");
+  MutexLocker locker(CompileStatistics_lock);
+
+  // _perf variables are production performance counters which are
+  // updated regardless of the setting of the CITime and CITimeEach flags
+  //
+  if (!success) {
+    _total_bailout_count++;
+    if (UsePerfData) {
+      _perf_last_failed_method->set_value(counters->current_method());
+      _perf_last_failed_type->set_value(counters->compile_type());
+      _perf_total_bailout_count->inc();
+    }
+  } else if (code == NULL) {
+    if (UsePerfData) {
+      _perf_last_invalidated_method->set_value(counters->current_method());
+      _perf_last_invalidated_type->set_value(counters->compile_type());
+      _perf_total_invalidated_count->inc();
+    }
+    _total_invalidated_count++;
+  } else {
+    // Compilation succeeded
+
+    // update compilation ticks - used by the implementation of
+    // java.lang.management.CompilationMBean
+    _perf_total_compilation->inc(time.ticks());
+
+    if (CITime) {
+      _t_total_compilation.add(time);
+      if (is_osr) {
+        _t_osr_compilation.add(time);
+        _sum_osr_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
+      } else {
+        _t_standard_compilation.add(time);
+        _sum_standard_bytes_compiled += method->code_size() + task->num_inlined_bytecodes();
+      }
+    }
+
+    if (UsePerfData) {
+      // save the name of the last method compiled
+      _perf_last_method->set_value(counters->current_method());
+      _perf_last_compile_type->set_value(counters->compile_type());
+      _perf_last_compile_size->set_value(method->code_size() +
+                                         task->num_inlined_bytecodes());
+      if (is_osr) {
+        _perf_osr_compilation->inc(time.ticks());
+        _perf_sum_osr_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
+      } else {
+        _perf_standard_compilation->inc(time.ticks());
+        _perf_sum_standard_bytes_compiled->inc(method->code_size() + task->num_inlined_bytecodes());
+      }
+    }
+
+    if (CITimeEach) {
+      float bytes_per_sec = 1.0 * (method->code_size() + task->num_inlined_bytecodes()) / time.seconds();
+      tty->print_cr("%3d   seconds: %f bytes/sec : %f (bytes %d + %d inlined)",
+                    compile_id, time.seconds(), bytes_per_sec, method->code_size(), task->num_inlined_bytecodes());
+    }
+
+    // Collect counts of successful compilations
+    _sum_nmethod_size += code->total_size();
+    _sum_nmethod_code_size += code->code_size();
+    _total_compile_count++;
+
+    if (UsePerfData) {
+      _perf_sum_nmethod_size->inc(code->total_size());
+      _perf_sum_nmethod_code_size->inc(code->code_size());
+      _perf_total_compile_count->inc();
+    }
+
+    if (is_osr) {
+      if (UsePerfData) _perf_total_osr_compile_count->inc();
+      _total_osr_compile_count++;
+    } else {
+      if (UsePerfData) _perf_total_standard_compile_count->inc();
+      _total_standard_compile_count++;
+    }
+  }
+  // set the current method for the thread to null
+  if (UsePerfData) counters->set_current_method("");
+}
+
+
+
+void CompileBroker::print_times() {
+  tty->cr();
+  tty->print_cr("Accumulated compiler times (for compiled methods only)");
+  tty->print_cr("------------------------------------------------");
+               //0000000000111111111122222222223333333333444444444455555555556666666666
+               //0123456789012345678901234567890123456789012345678901234567890123456789
+  tty->print_cr("  Total compilation time   : %6.3f s", CompileBroker::_t_total_compilation.seconds());
+  tty->print_cr("    Standard compilation   : %6.3f s, Average : %2.3f",
+                CompileBroker::_t_standard_compilation.seconds(),
+                CompileBroker::_t_standard_compilation.seconds() / CompileBroker::_total_standard_compile_count);
+  tty->print_cr("    On stack replacement   : %6.3f s, Average : %2.3f", CompileBroker::_t_osr_compilation.seconds(), CompileBroker::_t_osr_compilation.seconds() / CompileBroker::_total_osr_compile_count);
+  compiler(CompLevel_fast_compile)->print_timers();
+  if (compiler(CompLevel_fast_compile) != compiler(CompLevel_highest_tier)) {
+    compiler(CompLevel_highest_tier)->print_timers();
+  }
+
+  tty->cr();
+  int tcb = CompileBroker::_sum_osr_bytes_compiled + CompileBroker::_sum_standard_bytes_compiled;
+  tty->print_cr("  Total compiled bytecodes : %6d bytes", tcb);
+  tty->print_cr("    Standard compilation   : %6d bytes", CompileBroker::_sum_standard_bytes_compiled);
+  tty->print_cr("    On stack replacement   : %6d bytes", CompileBroker::_sum_osr_bytes_compiled);
+  int bps = (int)(tcb / CompileBroker::_t_total_compilation.seconds());
+  tty->print_cr("  Average compilation speed: %6d bytes/s", bps);
+  tty->cr();
+  tty->print_cr("  nmethod code size        : %6d bytes", CompileBroker::_sum_nmethod_code_size);
+  tty->print_cr("  nmethod total size       : %6d bytes", CompileBroker::_sum_nmethod_size);
+}
+
+
+// Debugging output for failure
+void CompileBroker::print_last_compile() {
+  if ( _last_compile_level != CompLevel_none &&
+       compiler(_last_compile_level) != NULL &&
+       _last_method_compiled != NULL &&
+       _last_compile_type != no_compile) {
+    if (_last_compile_type == osr_compile) {
+      tty->print_cr("Last parse:  [osr]%d+++(%d) %s",
+                    _osr_compilation_id, _last_compile_level, _last_method_compiled);
+    } else {
+      tty->print_cr("Last parse:  %d+++(%d) %s",
+                    _compilation_id, _last_compile_level, _last_method_compiled);
+    }
+  }
+}
+
+
+void CompileBroker::print_compiler_threads_on(outputStream* st) {
+#ifndef PRODUCT
+  st->print_cr("Compiler thread printing unimplemented.");
+  st->cr();
+#endif
+}