--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/compiler/compileTask.cpp Fri Sep 04 12:47:57 2015 +0200
@@ -0,0 +1,391 @@
+/*
+ * Copyright (c) 1998, 2014, 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.
+ *
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "compiler/compileTask.hpp"
+#include "compiler/compileLog.hpp"
+#include "compiler/compileBroker.hpp"
+
+CompileTask* CompileTask::_task_free_list = NULL;
+#ifdef ASSERT
+int CompileTask::_num_allocated_tasks = 0;
+#endif
+
+/**
+ * Allocate a CompileTask, from the free list if possible.
+ */
+CompileTask* CompileTask::allocate() {
+ 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();
+ DEBUG_ONLY(_num_allocated_tasks++;)
+ assert (WhiteBoxAPI || _num_allocated_tasks < 10000, "Leaking compilation tasks?");
+ task->set_next(NULL);
+ task->set_is_free(true);
+ }
+ assert(task->is_free(), "Task must be free.");
+ task->set_is_free(false);
+ return task;
+}
+
+/**
+* Add a task to the free list.
+*/
+
+void CompileTask::free(CompileTask* task) {
+ MutexLocker locker(CompileTaskAlloc_lock);
+ if (!task->is_free()) {
+ task->set_code(NULL);
+ assert(!task->lock()->is_locked(), "Should not be locked when freed");
+ JNIHandles::destroy_global(task->_method_holder);
+ JNIHandles::destroy_global(task->_hot_method_holder);
+
+ task->set_is_free(true);
+ task->set_next(_task_free_list);
+ _task_free_list = task;
+ }
+}
+
+
+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 = method();
+ _method_holder = JNIHandles::make_global(method->method_holder()->klass_holder());
+ _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_method_holder = NULL;
+ _hot_count = hot_count;
+ _time_queued = 0; // tidy
+ _comment = comment;
+ _failure_reason = NULL;
+
+ if (LogCompilation) {
+ _time_queued = os::elapsed_counter();
+ if (hot_method.not_null()) {
+ if (hot_method == method) {
+ _hot_method = _method;
+ } else {
+ _hot_method = hot_method();
+ // only add loader or mirror if different from _method_holder
+ _hot_method_holder = JNIHandles::make_global(hot_method->method_holder()->klass_holder());
+ }
+ }
+ }
+
+ _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
+}
+
+void CompileTask::mark_on_stack() {
+ // Mark these methods as something redefine classes cannot remove.
+ _method->set_on_stack(true);
+ if (_hot_method != NULL) {
+ _hot_method->set_on_stack(true);
+ }
+}
+
+// RedefineClasses support
+void CompileTask::metadata_do(void f(Metadata*)) {
+ f(method());
+ if (hot_method() != NULL && hot_method() != method()) {
+ f(hot_method());
+ }
+}
+
+// ------------------------------------------------------------------
+// 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) {
+ // print compiler name
+ st->print("%s:", CompileBroker::compiler_name(comp_level()));
+ print(st);
+}
+
+// ------------------------------------------------------------------
+// CompileTask::print_tty
+void CompileTask::print_tty() {
+ ttyLocker ttyl; // keep the following output all in one block
+ // print compiler name if requested
+ if (CIPrintCompilerName) tty->print("%s:", CompileBroker::compiler_name(comp_level()));
+ print(tty);
+}
+
+// ------------------------------------------------------------------
+// CompileTask::print_impl
+void CompileTask::print_impl(outputStream* st, Method* method, int compile_id, int comp_level,
+ bool is_osr_method, int osr_bci, bool is_blocking,
+ const char* msg, bool short_form, bool cr) {
+ if (!short_form) {
+ st->print("%7d ", (int) st->time_stamp().milliseconds()); // print timestamp
+ }
+ st->print("%4d ", compile_id); // print compilation number
+
+ // For unloaded methods the transition to zombie occurs after the
+ // method is cleared so it's impossible to report accurate
+ // information for that case.
+ bool is_synchronized = false;
+ bool has_exception_handler = false;
+ bool is_native = false;
+ if (method != NULL) {
+ is_synchronized = method->is_synchronized();
+ has_exception_handler = method->has_exception_handler();
+ is_native = method->is_native();
+ }
+ // method attributes
+ const char compile_type = is_osr_method ? '%' : ' ';
+ const char sync_char = is_synchronized ? 's' : ' ';
+ const char exception_char = has_exception_handler ? '!' : ' ';
+ const char blocking_char = is_blocking ? 'b' : ' ';
+ const char native_char = is_native ? 'n' : ' ';
+
+ // print method attributes
+ st->print("%c%c%c%c%c ", compile_type, sync_char, exception_char, blocking_char, native_char);
+
+ if (TieredCompilation) {
+ if (comp_level != -1) st->print("%d ", comp_level);
+ else st->print("- ");
+ }
+ st->print(" "); // more indent
+
+ if (method == NULL) {
+ st->print("(method)");
+ } else {
+ method->print_short_name(st);
+ if (is_osr_method) {
+ st->print(" @ %d", osr_bci);
+ }
+ if (method->is_native())
+ st->print(" (native)");
+ else
+ st->print(" (%d bytes)", method->code_size());
+ }
+
+ if (msg != NULL) {
+ st->print(" %s", msg);
+ }
+ if (cr) {
+ st->cr();
+ }
+}
+
+void CompileTask::print_inline_indent(int inline_level, outputStream* st) {
+ // 1234567
+ st->print(" "); // print timestamp
+ // 1234
+ st->print(" "); // print compilation number
+ // %s!bn
+ st->print(" "); // print method attributes
+ if (TieredCompilation) {
+ st->print(" ");
+ }
+ st->print(" "); // more indent
+ st->print(" "); // initial inlining indent
+ for (int i = 0; i < inline_level; i++) st->print(" ");
+}
+
+// ------------------------------------------------------------------
+// CompileTask::print_compilation
+void CompileTask::print(outputStream* st, const char* msg, bool short_form, bool cr) {
+ bool is_osr_method = osr_bci() != InvocationEntryBci;
+ print_impl(st, method(), compile_id(), comp_level(), is_osr_method, osr_bci(), is_blocking(), msg, short_form, cr);
+}
+
+// ------------------------------------------------------------------
+// CompileTask::log_task
+void CompileTask::log_task(xmlStream* log) {
+ Thread* thread = Thread::current();
+ methodHandle method(thread, this->method());
+ ResourceMark rm(thread);
+
+ // <task id='9' method='M' osr_bci='X' level='1' blocking='1' stamp='1.234'>
+ 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, _hot_method);
+ methodHandle method(thread, _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, this->method());
+ ResourceMark rm(thread);
+
+ if (!_is_success) {
+ const char* reason = _failure_reason != NULL ? _failure_reason : "unknown";
+ log->elem("failure reason='%s'", reason);
+ }
+
+ // <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->content_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->clear_identities(); // next task will have different CI
+ log->tail("task");
+ if (log->unflushed_count() > 2000) {
+ log->flush();
+ }
+ log->mark_file_end();
+}
+
+// ------------------------------------------------------------------
+// CompileTask::print_inlining
+void CompileTask::print_inlining_inner(outputStream* st, ciMethod* method, int inline_level, int bci, const char* msg) {
+ // 1234567
+ st->print(" "); // print timestamp
+ // 1234
+ st->print(" "); // print compilation number
+
+ // method attributes
+ if (method->is_loaded()) {
+ const char sync_char = method->is_synchronized() ? 's' : ' ';
+ const char exception_char = method->has_exception_handlers() ? '!' : ' ';
+ const char monitors_char = method->has_monitor_bytecodes() ? 'm' : ' ';
+
+ // print method attributes
+ st->print(" %c%c%c ", sync_char, exception_char, monitors_char);
+ } else {
+ // %s!bn
+ st->print(" "); // print method attributes
+ }
+
+ if (TieredCompilation) {
+ st->print(" ");
+ }
+ st->print(" "); // more indent
+ st->print(" "); // initial inlining indent
+
+ for (int i = 0; i < inline_level; i++) st->print(" ");
+
+ st->print("@ %d ", bci); // print bci
+ method->print_short_name(st);
+ if (method->is_loaded())
+ st->print(" (%d bytes)", method->code_size());
+ else
+ st->print(" (not loaded)");
+
+ if (msg != NULL) {
+ st->print(" %s", msg);
+ }
+ st->cr();
+}