1 /*
2 * Copyright (c) 2005, 2019, 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 *
38 // } else {
39 // // dump succeeded
40 // }
41 // }
42 //
43
44 class outputStream;
45
46 class HeapDumper : public StackObj {
47 private:
48 char* _error;
49 bool _gc_before_heap_dump;
50 bool _oome;
51 elapsedTimer _t;
52
53 HeapDumper(bool gc_before_heap_dump, bool oome) :
54 _error(NULL), _gc_before_heap_dump(gc_before_heap_dump), _oome(oome) { }
55
56 // string representation of error
57 char* error() const { return _error; }
58 void set_error(char* error);
59
60 // internal timer.
61 elapsedTimer* timer() { return &_t; }
62
63 static void dump_heap(bool oome);
64
65 public:
66 HeapDumper(bool gc_before_heap_dump) :
67 _error(NULL), _gc_before_heap_dump(gc_before_heap_dump), _oome(false) { }
68
69 ~HeapDumper();
70
71 // dumps the heap to the specified file, returns 0 if success.
72 // additional info is written to out if not NULL.
73 int dump(const char* path, outputStream* out = NULL);
74
75 // returns error message (resource allocated), or NULL if no error
76 char* error_as_C_string() const;
77
78 static void dump_heap() NOT_SERVICES_RETURN;
79
80 static void dump_heap_from_oome() NOT_SERVICES_RETURN;
81 };
82
83 #endif // SHARE_SERVICES_HEAPDUMPER_HPP
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1 /*
2 * Copyright (c) 2005, 2020, 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 *
38 // } else {
39 // // dump succeeded
40 // }
41 // }
42 //
43
44 class outputStream;
45
46 class HeapDumper : public StackObj {
47 private:
48 char* _error;
49 bool _gc_before_heap_dump;
50 bool _oome;
51 elapsedTimer _t;
52
53 HeapDumper(bool gc_before_heap_dump, bool oome) :
54 _error(NULL), _gc_before_heap_dump(gc_before_heap_dump), _oome(oome) { }
55
56 // string representation of error
57 char* error() const { return _error; }
58 void set_error(char const* error);
59
60 // internal timer.
61 elapsedTimer* timer() { return &_t; }
62
63 static void dump_heap(bool oome);
64
65 public:
66 HeapDumper(bool gc_before_heap_dump) :
67 _error(NULL), _gc_before_heap_dump(gc_before_heap_dump), _oome(false) { }
68
69 ~HeapDumper();
70
71 // dumps the heap to the specified file, returns 0 if success.
72 // additional info is written to out if not NULL.
73 // compression >= 0 creates a gzipped file with the given compression level.
74 int dump(const char* path, outputStream* out = NULL, int compression = -1);
75
76 // returns error message (resource allocated), or NULL if no error
77 char* error_as_C_string() const;
78
79 static void dump_heap() NOT_SERVICES_RETURN;
80
81 static void dump_heap_from_oome() NOT_SERVICES_RETURN;
82 };
83
84 #endif // SHARE_SERVICES_HEAPDUMPER_HPP
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