1 /*
2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
1380 void add_class_serial_number(Klass* k, int serial_num) {
1381 _klass_map->at_put_grow(serial_num, k);
1382 }
1383
1384 // HPROF_TRACE and HPROF_FRAME records
1385 void dump_stack_traces();
1386
1387 // writes a HPROF_HEAP_DUMP or HPROF_HEAP_DUMP_SEGMENT record
1388 void write_dump_header();
1389
1390 // fixes up the length of the current dump record
1391 void write_current_dump_record_length();
1392
1393 // fixes up the current dump record )and writes HPROF_HEAP_DUMP_END
1394 // record in the case of a segmented heap dump)
1395 void end_of_dump();
1396
1397 public:
1398 VM_HeapDumper(DumpWriter* writer, bool gc_before_heap_dump, bool oome) :
1399 VM_GC_Operation(0 /* total collections, dummy, ignored */,
1400 0 /* total full collections, dummy, ignored */,
1401 gc_before_heap_dump) {
1402 _local_writer = writer;
1403 _gc_before_heap_dump = gc_before_heap_dump;
1404 _is_segmented_dump = false;
1405 _dump_start = (jlong)-1;
1406 _klass_map = new (ResourceObj::C_HEAP) GrowableArray<Klass*>(INITIAL_CLASS_COUNT, true);
1407 _stack_traces = NULL;
1408 _num_threads = 0;
1409 if (oome) {
1410 assert(!Thread::current()->is_VM_thread(), "Dump from OutOfMemoryError cannot be called by the VMThread");
1411 // get OutOfMemoryError zero-parameter constructor
1412 instanceKlass* oome_ik = instanceKlass::cast(SystemDictionary::OutOfMemoryError_klass());
1413 _oome_constructor = oome_ik->find_method(vmSymbols::object_initializer_name(),
1414 vmSymbols::void_method_signature());
1415 // get thread throwing OOME when generating the heap dump at OOME
1416 _oome_thread = JavaThread::current();
1417 } else {
1418 _oome_thread = NULL;
1419 _oome_constructor = NULL;
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1 /*
2 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
1380 void add_class_serial_number(Klass* k, int serial_num) {
1381 _klass_map->at_put_grow(serial_num, k);
1382 }
1383
1384 // HPROF_TRACE and HPROF_FRAME records
1385 void dump_stack_traces();
1386
1387 // writes a HPROF_HEAP_DUMP or HPROF_HEAP_DUMP_SEGMENT record
1388 void write_dump_header();
1389
1390 // fixes up the length of the current dump record
1391 void write_current_dump_record_length();
1392
1393 // fixes up the current dump record )and writes HPROF_HEAP_DUMP_END
1394 // record in the case of a segmented heap dump)
1395 void end_of_dump();
1396
1397 public:
1398 VM_HeapDumper(DumpWriter* writer, bool gc_before_heap_dump, bool oome) :
1399 VM_GC_Operation(0 /* total collections, dummy, ignored */,
1400 GCCause::_heap_dump /* GC Cause */,
1401 0 /* total full collections, dummy, ignored */,
1402 gc_before_heap_dump) {
1403 _local_writer = writer;
1404 _gc_before_heap_dump = gc_before_heap_dump;
1405 _is_segmented_dump = false;
1406 _dump_start = (jlong)-1;
1407 _klass_map = new (ResourceObj::C_HEAP) GrowableArray<Klass*>(INITIAL_CLASS_COUNT, true);
1408 _stack_traces = NULL;
1409 _num_threads = 0;
1410 if (oome) {
1411 assert(!Thread::current()->is_VM_thread(), "Dump from OutOfMemoryError cannot be called by the VMThread");
1412 // get OutOfMemoryError zero-parameter constructor
1413 instanceKlass* oome_ik = instanceKlass::cast(SystemDictionary::OutOfMemoryError_klass());
1414 _oome_constructor = oome_ik->find_method(vmSymbols::object_initializer_name(),
1415 vmSymbols::void_method_signature());
1416 // get thread throwing OOME when generating the heap dump at OOME
1417 _oome_thread = JavaThread::current();
1418 } else {
1419 _oome_thread = NULL;
1420 _oome_constructor = NULL;
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