author | mgronlun |
Wed, 09 Oct 2019 23:22:56 +0200 | |
branch | JEP-349-branch |
changeset 58526 | ec9da3c0eaec |
parent 58395 | 42d3bce9d538 |
parent 58503 | 726a3945e934 |
child 58578 | 7b89c53db169 |
permissions | -rw-r--r-- |
50113 | 1 |
/* |
53582 | 2 |
* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved. |
50113 | 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 |
* |
|
23 |
*/ |
|
24 |
||
25 |
#include "precompiled.hpp" |
|
26 |
#include "jfr/jfrEvents.hpp" |
|
54263
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
27 |
#include "jfr/jni/jfrJavaSupport.hpp" |
50113 | 28 |
#include "jfr/leakprofiler/leakProfiler.hpp" |
29 |
#include "jfr/recorder/repository/jfrEmergencyDump.hpp" |
|
30 |
#include "jfr/recorder/service/jfrPostBox.hpp" |
|
31 |
#include "jfr/recorder/service/jfrRecorderService.hpp" |
|
32 |
#include "jfr/utilities/jfrTypes.hpp" |
|
54263
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
33 |
#include "logging/log.hpp" |
50113 | 34 |
#include "memory/resourceArea.hpp" |
35 |
#include "runtime/atomic.hpp" |
|
53582 | 36 |
#include "runtime/handles.inline.hpp" |
50113 | 37 |
#include "runtime/globals.hpp" |
38 |
#include "runtime/mutexLocker.hpp" |
|
54263
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
39 |
#include "runtime/os.hpp" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
40 |
#include "runtime/thread.inline.hpp" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
41 |
#include "utilities/growableArray.hpp" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
42 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
43 |
static const char vm_error_filename_fmt[] = "hs_err_pid%p.jfr"; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
44 |
static const char vm_oom_filename_fmt[] = "hs_oom_pid%p.jfr"; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
45 |
static const char vm_soe_filename_fmt[] = "hs_soe_pid%p.jfr"; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
46 |
static const char chunk_file_jfr_ext[] = ".jfr"; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
47 |
static const size_t iso8601_len = 19; // "YYYY-MM-DDTHH:MM:SS" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
48 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
49 |
static fio_fd open_exclusivly(const char* path) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
50 |
return os::open(path, O_CREAT | O_RDWR, S_IREAD | S_IWRITE); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
51 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
52 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
53 |
static int file_sort(const char** const file1, const char** file2) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
54 |
assert(NULL != *file1 && NULL != *file2, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
55 |
int cmp = strncmp(*file1, *file2, iso8601_len); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
56 |
if (0 == cmp) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
57 |
const char* const dot1 = strchr(*file1, '.'); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
58 |
assert(NULL != dot1, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
59 |
const char* const dot2 = strchr(*file2, '.'); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
60 |
assert(NULL != dot2, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
61 |
ptrdiff_t file1_len = dot1 - *file1; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
62 |
ptrdiff_t file2_len = dot2 - *file2; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
63 |
if (file1_len < file2_len) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
64 |
return -1; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
65 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
66 |
if (file1_len > file2_len) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
67 |
return 1; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
68 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
69 |
assert(file1_len == file2_len, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
70 |
cmp = strncmp(*file1, *file2, file1_len); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
71 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
72 |
assert(cmp != 0, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
73 |
return cmp; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
74 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
75 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
76 |
static void iso8601_to_date_time(char* iso8601_str) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
77 |
assert(iso8601_str != NULL, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
78 |
assert(strlen(iso8601_str) == iso8601_len, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
79 |
// "YYYY-MM-DDTHH:MM:SS" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
80 |
for (size_t i = 0; i < iso8601_len; ++i) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
81 |
switch (iso8601_str[i]) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
82 |
case 'T': |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
83 |
case '-': |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
84 |
case ':': |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
85 |
iso8601_str[i] = '_'; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
86 |
break; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
87 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
88 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
89 |
// "YYYY_MM_DD_HH_MM_SS" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
90 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
91 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
92 |
static void date_time(char* buffer, size_t buffer_len) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
93 |
assert(buffer != NULL, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
94 |
assert(buffer_len >= iso8601_len, "buffer too small"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
95 |
os::iso8601_time(buffer, buffer_len); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
96 |
assert(strlen(buffer) >= iso8601_len + 1, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
97 |
// "YYYY-MM-DDTHH:MM:SS" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
98 |
buffer[iso8601_len] = '\0'; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
99 |
iso8601_to_date_time(buffer); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
100 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
101 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
102 |
static int64_t file_size(fio_fd fd) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
103 |
assert(fd != invalid_fd, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
104 |
const int64_t current_offset = os::current_file_offset(fd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
105 |
const int64_t size = os::lseek(fd, 0, SEEK_END); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
106 |
os::seek_to_file_offset(fd, current_offset); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
107 |
return size; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
108 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
109 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
110 |
class RepositoryIterator : public StackObj { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
111 |
private: |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
112 |
const char* const _repo; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
113 |
const size_t _repository_len; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
114 |
GrowableArray<const char*>* _files; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
115 |
const char* const fully_qualified(const char* entry) const; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
116 |
mutable int _iterator; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
117 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
118 |
public: |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
119 |
RepositoryIterator(const char* repository, size_t repository_len); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
120 |
~RepositoryIterator() {} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
121 |
const char* const filter(const char* entry) const; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
122 |
bool has_next() const; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
123 |
const char* const next() const; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
124 |
}; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
125 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
126 |
const char* const RepositoryIterator::fully_qualified(const char* entry) const { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
127 |
assert(NULL != entry, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
128 |
char* file_path_entry = NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
129 |
// only use files that have content, not placeholders |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
130 |
const char* const file_separator = os::file_separator(); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
131 |
if (NULL != file_separator) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
132 |
const size_t entry_len = strlen(entry); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
133 |
const size_t file_separator_length = strlen(file_separator); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
134 |
const size_t file_path_entry_length = _repository_len + file_separator_length + entry_len; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
135 |
file_path_entry = NEW_RESOURCE_ARRAY_RETURN_NULL(char, file_path_entry_length + 1); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
136 |
if (NULL == file_path_entry) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
137 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
138 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
139 |
int position = 0; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
140 |
position += jio_snprintf(&file_path_entry[position], _repository_len + 1, "%s", _repo); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
141 |
position += jio_snprintf(&file_path_entry[position], file_separator_length + 1, "%s", os::file_separator()); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
142 |
position += jio_snprintf(&file_path_entry[position], entry_len + 1, "%s", entry); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
143 |
file_path_entry[position] = '\0'; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
144 |
assert((size_t)position == file_path_entry_length, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
145 |
assert(strlen(file_path_entry) == (size_t)position, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
146 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
147 |
return file_path_entry; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
148 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
149 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
150 |
const char* const RepositoryIterator::filter(const char* entry) const { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
151 |
if (entry == NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
152 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
153 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
154 |
const size_t entry_len = strlen(entry); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
155 |
if (entry_len <= 2) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
156 |
// for "." and ".." |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
157 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
158 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
159 |
char* entry_name = NEW_RESOURCE_ARRAY_RETURN_NULL(char, entry_len + 1); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
160 |
if (entry_name == NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
161 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
162 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
163 |
strncpy(entry_name, entry, entry_len + 1); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
164 |
const char* const fully_qualified_path_entry = fully_qualified(entry_name); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
165 |
if (NULL == fully_qualified_path_entry) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
166 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
167 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
168 |
const fio_fd entry_fd = open_exclusivly(fully_qualified_path_entry); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
169 |
if (invalid_fd == entry_fd) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
170 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
171 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
172 |
const int64_t entry_size = file_size(entry_fd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
173 |
os::close(entry_fd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
174 |
if (0 == entry_size) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
175 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
176 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
177 |
return entry_name; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
178 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
179 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
180 |
RepositoryIterator::RepositoryIterator(const char* repository, size_t repository_len) : |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
181 |
_repo(repository), |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
182 |
_repository_len(repository_len), |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
183 |
_files(NULL), |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
184 |
_iterator(0) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
185 |
if (NULL != _repo) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
186 |
assert(strlen(_repo) == _repository_len, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
187 |
_files = new GrowableArray<const char*>(10); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
188 |
DIR* dirp = os::opendir(_repo); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
189 |
if (dirp == NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
190 |
log_error(jfr, system)("Unable to open repository %s", _repo); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
191 |
return; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
192 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
193 |
struct dirent* dentry; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
194 |
while ((dentry = os::readdir(dirp)) != NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
195 |
const char* const entry_path = filter(dentry->d_name); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
196 |
if (NULL != entry_path) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
197 |
_files->append(entry_path); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
198 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
199 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
200 |
os::closedir(dirp); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
201 |
if (_files->length() > 1) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
202 |
_files->sort(file_sort); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
203 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
204 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
205 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
206 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
207 |
bool RepositoryIterator::has_next() const { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
208 |
return (_files != NULL && _iterator < _files->length()); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
209 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
210 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
211 |
const char* const RepositoryIterator::next() const { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
212 |
return _iterator >= _files->length() ? NULL : fully_qualified(_files->at(_iterator++)); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
213 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
214 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
215 |
static void write_emergency_file(fio_fd emergency_fd, const RepositoryIterator& iterator) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
216 |
assert(emergency_fd != invalid_fd, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
217 |
const size_t size_of_file_copy_block = 1 * M; // 1 mb |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
218 |
jbyte* const file_copy_block = NEW_RESOURCE_ARRAY_RETURN_NULL(jbyte, size_of_file_copy_block); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
219 |
if (file_copy_block == NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
220 |
return; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
221 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
222 |
while (iterator.has_next()) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
223 |
fio_fd current_fd = invalid_fd; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
224 |
const char* const fqn = iterator.next(); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
225 |
if (fqn != NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
226 |
current_fd = open_exclusivly(fqn); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
227 |
if (current_fd != invalid_fd) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
228 |
const int64_t current_filesize = file_size(current_fd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
229 |
assert(current_filesize > 0, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
230 |
int64_t bytes_read = 0; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
231 |
int64_t bytes_written = 0; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
232 |
while (bytes_read < current_filesize) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
233 |
const ssize_t read_result = os::read_at(current_fd, file_copy_block, size_of_file_copy_block, bytes_read); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
234 |
if (-1 == read_result) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
235 |
log_info(jfr)( // For user, should not be "jfr, system" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
236 |
"Unable to recover JFR data"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
237 |
break; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
238 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
239 |
bytes_read += (int64_t)read_result; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
240 |
assert(bytes_read - bytes_written <= (int64_t)size_of_file_copy_block, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
241 |
bytes_written += (int64_t)os::write(emergency_fd, file_copy_block, bytes_read - bytes_written); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
242 |
assert(bytes_read == bytes_written, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
243 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
244 |
os::close(current_fd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
245 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
246 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
247 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
248 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
249 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
250 |
static const char* create_emergency_dump_path() { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
251 |
char* buffer = NEW_RESOURCE_ARRAY_RETURN_NULL(char, JVM_MAXPATHLEN); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
252 |
if (NULL == buffer) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
253 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
254 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
255 |
const char* const cwd = os::get_current_directory(buffer, JVM_MAXPATHLEN); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
256 |
if (NULL == cwd) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
257 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
258 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
259 |
size_t pos = strlen(cwd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
260 |
const int fsep_len = jio_snprintf(&buffer[pos], JVM_MAXPATHLEN - pos, "%s", os::file_separator()); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
261 |
const char* filename_fmt = NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
262 |
// fetch specific error cause |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
263 |
switch (JfrJavaSupport::cause()) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
264 |
case JfrJavaSupport::OUT_OF_MEMORY: |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
265 |
filename_fmt = vm_oom_filename_fmt; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
266 |
break; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
267 |
case JfrJavaSupport::STACK_OVERFLOW: |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
268 |
filename_fmt = vm_soe_filename_fmt; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
269 |
break; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
270 |
default: |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
271 |
filename_fmt = vm_error_filename_fmt; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
272 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
273 |
char* emergency_dump_path = NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
274 |
pos += fsep_len; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
275 |
if (Arguments::copy_expand_pid(filename_fmt, strlen(filename_fmt), &buffer[pos], JVM_MAXPATHLEN - pos)) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
276 |
const size_t emergency_filename_length = strlen(buffer); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
277 |
emergency_dump_path = NEW_RESOURCE_ARRAY_RETURN_NULL(char, emergency_filename_length + 1); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
278 |
if (NULL == emergency_dump_path) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
279 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
280 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
281 |
strncpy(emergency_dump_path, buffer, emergency_filename_length + 1); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
282 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
283 |
if (emergency_dump_path != NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
284 |
log_info(jfr)( // For user, should not be "jfr, system" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
285 |
"Attempting to recover JFR data, emergency jfr file: %s", emergency_dump_path); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
286 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
287 |
return emergency_dump_path; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
288 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
289 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
290 |
// Caller needs ResourceMark |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
291 |
static const char* create_emergency_chunk_path(const char* repository_path) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
292 |
assert(repository_path != NULL, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
293 |
const size_t repository_path_len = strlen(repository_path); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
294 |
// date time |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
295 |
char date_time_buffer[32] = { 0 }; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
296 |
date_time(date_time_buffer, sizeof(date_time_buffer)); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
297 |
size_t date_time_len = strlen(date_time_buffer); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
298 |
size_t chunkname_max_len = repository_path_len // repository_base_path |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
299 |
+ 1 // "/" |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
300 |
+ date_time_len // date_time |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
301 |
+ strlen(chunk_file_jfr_ext) // .jfr |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
302 |
+ 1; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
303 |
char* chunk_path = NEW_RESOURCE_ARRAY_RETURN_NULL(char, chunkname_max_len); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
304 |
if (chunk_path == NULL) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
305 |
return NULL; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
306 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
307 |
// append the individual substrings |
58395 | 308 |
jio_snprintf(chunk_path, chunkname_max_len, "%s%s%s%s", repository_path, os::file_separator(), date_time_buffer, chunk_file_jfr_ext); |
54263
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
309 |
return chunk_path; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
310 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
311 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
312 |
static fio_fd emergency_dump_file_descriptor() { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
313 |
ResourceMark rm; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
314 |
const char* const emergency_dump_path = create_emergency_dump_path(); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
315 |
return emergency_dump_path != NULL ? open_exclusivly(emergency_dump_path) : invalid_fd; |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
316 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
317 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
318 |
const char* JfrEmergencyDump::build_dump_path(const char* repository_path) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
319 |
return repository_path == NULL ? create_emergency_dump_path() : create_emergency_chunk_path(repository_path); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
320 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
321 |
|
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
322 |
void JfrEmergencyDump::on_vm_error(const char* repository_path) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
323 |
assert(repository_path != NULL, "invariant"); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
324 |
ResourceMark rm; |
57360 | 325 |
|
54263
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
326 |
const fio_fd emergency_fd = emergency_dump_file_descriptor(); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
327 |
if (emergency_fd != invalid_fd) { |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
328 |
RepositoryIterator iterator(repository_path, strlen(repository_path)); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
329 |
write_emergency_file(emergency_fd, iterator); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
330 |
os::close(emergency_fd); |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
331 |
} |
3cabb47758c9
8217362: Emergency dump does not work when disk=false is set
mgronlun
parents:
53775
diff
changeset
|
332 |
} |
50113 | 333 |
|
334 |
/* |
|
335 |
* We are just about to exit the VM, so we will be very aggressive |
|
336 |
* at this point in order to increase overall success of dumping jfr data: |
|
337 |
* |
|
338 |
* 1. if the thread state is not "_thread_in_vm", we will quick transition |
|
339 |
* it to "_thread_in_vm". |
|
340 |
* 2. the nesting state for both resource and handle areas are unknown, |
|
341 |
* so we allocate new fresh arenas, discarding the old ones. |
|
342 |
* 3. if the thread is the owner of some critical lock(s), unlock them. |
|
343 |
* |
|
344 |
* If we end up deadlocking in the attempt of dumping out jfr data, |
|
345 |
* we rely on the WatcherThread task "is_error_reported()", |
|
346 |
* to exit the VM after a hard-coded timeout. |
|
347 |
* This "safety net" somewhat explains the aggressiveness in this attempt. |
|
348 |
* |
|
349 |
*/ |
|
350 |
static void prepare_for_emergency_dump(Thread* thread) { |
|
351 |
if (thread->is_Java_thread()) { |
|
352 |
((JavaThread*)thread)->set_thread_state(_thread_in_vm); |
|
353 |
} |
|
354 |
||
355 |
#ifdef ASSERT |
|
57840 | 356 |
Mutex* owned_lock = thread->owned_locks(); |
50113 | 357 |
while (owned_lock != NULL) { |
57840 | 358 |
Mutex* next = owned_lock->next(); |
50113 | 359 |
owned_lock->unlock(); |
360 |
owned_lock = next; |
|
361 |
} |
|
362 |
#endif // ASSERT |
|
363 |
||
364 |
if (Threads_lock->owned_by_self()) { |
|
365 |
Threads_lock->unlock(); |
|
366 |
} |
|
367 |
||
368 |
if (Module_lock->owned_by_self()) { |
|
369 |
Module_lock->unlock(); |
|
370 |
} |
|
371 |
||
51608 | 372 |
if (ClassLoaderDataGraph_lock->owned_by_self()) { |
373 |
ClassLoaderDataGraph_lock->unlock(); |
|
374 |
} |
|
375 |
||
50113 | 376 |
if (Heap_lock->owned_by_self()) { |
377 |
Heap_lock->unlock(); |
|
378 |
} |
|
379 |
||
380 |
if (VMOperationQueue_lock->owned_by_self()) { |
|
381 |
VMOperationQueue_lock->unlock(); |
|
382 |
} |
|
383 |
||
384 |
if (VMOperationRequest_lock->owned_by_self()) { |
|
385 |
VMOperationRequest_lock->unlock(); |
|
386 |
} |
|
387 |
||
388 |
||
389 |
if (Service_lock->owned_by_self()) { |
|
390 |
Service_lock->unlock(); |
|
391 |
} |
|
392 |
||
58503
726a3945e934
8170299: Debugger does not stop inside the low memory notifications code
dtitov
parents:
57840
diff
changeset
|
393 |
if (UseNotificationThread && Notification_lock->owned_by_self()) { |
726a3945e934
8170299: Debugger does not stop inside the low memory notifications code
dtitov
parents:
57840
diff
changeset
|
394 |
Notification_lock->unlock(); |
726a3945e934
8170299: Debugger does not stop inside the low memory notifications code
dtitov
parents:
57840
diff
changeset
|
395 |
} |
726a3945e934
8170299: Debugger does not stop inside the low memory notifications code
dtitov
parents:
57840
diff
changeset
|
396 |
|
50113 | 397 |
if (CodeCache_lock->owned_by_self()) { |
398 |
CodeCache_lock->unlock(); |
|
399 |
} |
|
400 |
||
401 |
if (PeriodicTask_lock->owned_by_self()) { |
|
402 |
PeriodicTask_lock->unlock(); |
|
403 |
} |
|
404 |
||
405 |
if (JfrMsg_lock->owned_by_self()) { |
|
406 |
JfrMsg_lock->unlock(); |
|
407 |
} |
|
408 |
||
409 |
if (JfrBuffer_lock->owned_by_self()) { |
|
410 |
JfrBuffer_lock->unlock(); |
|
411 |
} |
|
412 |
||
413 |
if (JfrStacktrace_lock->owned_by_self()) { |
|
414 |
JfrStacktrace_lock->unlock(); |
|
415 |
} |
|
416 |
} |
|
417 |
||
418 |
static volatile int jfr_shutdown_lock = 0; |
|
419 |
||
420 |
static bool guard_reentrancy() { |
|
421 |
return Atomic::cmpxchg(1, &jfr_shutdown_lock, 0) == 0; |
|
422 |
} |
|
423 |
||
424 |
void JfrEmergencyDump::on_vm_shutdown(bool exception_handler) { |
|
425 |
if (!guard_reentrancy()) { |
|
426 |
return; |
|
427 |
} |
|
428 |
// function made non-reentrant |
|
429 |
Thread* thread = Thread::current(); |
|
430 |
if (exception_handler) { |
|
431 |
// we are crashing |
|
432 |
if (thread->is_Watcher_thread()) { |
|
433 |
// The Watcher thread runs the periodic thread sampling task. |
|
434 |
// If it has crashed, it is likely that another thread is |
|
435 |
// left in a suspended state. This would mean the system |
|
436 |
// will not be able to ever move to a safepoint. We try |
|
437 |
// to avoid issuing safepoint operations when attempting |
|
438 |
// an emergency dump, but a safepoint might be already pending. |
|
439 |
return; |
|
440 |
} |
|
441 |
prepare_for_emergency_dump(thread); |
|
442 |
} |
|
443 |
EventDumpReason event; |
|
444 |
if (event.should_commit()) { |
|
445 |
event.set_reason(exception_handler ? "Crash" : "Out of Memory"); |
|
446 |
event.set_recordingId(-1); |
|
447 |
event.commit(); |
|
448 |
} |
|
449 |
if (!exception_handler) { |
|
450 |
// OOM |
|
451 |
LeakProfiler::emit_events(max_jlong, false); |
|
452 |
} |
|
453 |
const int messages = MSGBIT(MSG_VM_ERROR); |
|
454 |
ResourceMark rm(thread); |
|
455 |
HandleMark hm(thread); |
|
456 |
JfrRecorderService service; |
|
457 |
service.rotate(messages); |
|
458 |
} |