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 #ifndef SHARE_VM_LOGGING_LOGTAG_HPP
25 #define SHARE_VM_LOGGING_LOGTAG_HPP
26 #include "utilities/globalDefinitions.hpp"
27
28 // List of available logging tags. New tags should be added here.
29 // (The tags 'all', 'disable' and 'help' are special tags that can
30 // not be used in log calls, and should not be listed below.)
31 #define LOG_TAG_LIST \
32 LOG_TAG(gc) \
33 LOG_TAG(rt) \
34 LOG_TAG(svc) \
35 LOG_TAG(logging) \
36 LOG_TAG(comp)
37
38 #define PREFIX_LOG_TAG(T) (LogTag::T)
39
40 // Expand a set of log tags to their prefixed names.
41 // For error detection purposes, the macro passes one more tag than what is supported.
42 // If too many tags are given, a static assert in the log class will fail.
43 #define LOG_TAGS_EXPANDED(T0, T1, T2, T3, T4, T5, ...) PREFIX_LOG_TAG(T0), PREFIX_LOG_TAG(T1), PREFIX_LOG_TAG(T2), \
44 PREFIX_LOG_TAG(T3), PREFIX_LOG_TAG(T4), PREFIX_LOG_TAG(T5)
45 // The EXPAND_VARARGS macro is required for MSVC, or it will resolve the LOG_TAGS_EXPANDED macro incorrectly.
46 #define EXPAND_VARARGS(x) x
47 #define LOG_TAGS(...) EXPAND_VARARGS(LOG_TAGS_EXPANDED(__VA_ARGS__, __NO_TAG, __NO_TAG, __NO_TAG, __NO_TAG, __NO_TAG, __NO_TAG))
48
49 class LogTag {
50 public:
51 static const size_t MaxTags = 5;
52
53 enum type {
54 __NO_TAG,
55 #define LOG_TAG(name) name,
56 LOG_TAG_LIST
57 #undef LOG_TAG
58 Count
59 };
60
61 static const char* name(LogTag::type tag) {
62 return _name[tag];
63 }
64
65 static LogTag::type from_string(const char *str);
66
67 private:
68 static const char* _name[];
69 };
70
71 typedef LogTag::type LogTagType;
72
73 #endif
|
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 #ifndef SHARE_VM_LOGGING_LOGTAG_HPP
25 #define SHARE_VM_LOGGING_LOGTAG_HPP
26
27 #include "memory/allocation.hpp"
28 #include "utilities/globalDefinitions.hpp"
29
30 // List of available logging tags. New tags should be added here.
31 // (The tags 'all', 'disable' and 'help' are special tags that can
32 // not be used in log calls, and should not be listed below.)
33 #define LOG_TAG_LIST \
34 LOG_TAG(logging)
35
36 #define PREFIX_LOG_TAG(T) (LogTag::T)
37
38 // Expand a set of log tags to their prefixed names.
39 // For error detection purposes, the macro passes one more tag than what is supported.
40 // If too many tags are given, a static assert in the log class will fail.
41 #define LOG_TAGS_EXPANDED(T0, T1, T2, T3, T4, T5, ...) PREFIX_LOG_TAG(T0), PREFIX_LOG_TAG(T1), PREFIX_LOG_TAG(T2), \
42 PREFIX_LOG_TAG(T3), PREFIX_LOG_TAG(T4), PREFIX_LOG_TAG(T5)
43 // The EXPAND_VARARGS macro is required for MSVC, or it will resolve the LOG_TAGS_EXPANDED macro incorrectly.
44 #define EXPAND_VARARGS(x) x
45 #define LOG_TAGS(...) EXPAND_VARARGS(LOG_TAGS_EXPANDED(__VA_ARGS__, __NO_TAG, __NO_TAG, __NO_TAG, __NO_TAG, __NO_TAG, __NO_TAG))
46
47 // Log tags are used to classify log messages.
48 // Each log message can be assigned between 1 to LogTag::MaxTags number of tags.
49 // Specifying multiple tags for a log message means that only outputs configured
50 // for those exact tags, or a subset of the tags with a wildcard, will see the logging.
51 // Multiple tags should be comma separated, e.g. log_error(tag1, tag2)("msg").
52 class LogTag : public AllStatic {
53 public:
54 // The maximum number of tags that a single log message can have.
55 // E.g. there might be hundreds of different tags available,
56 // but a specific log message can only be tagged with up to MaxTags of those.
57 static const size_t MaxTags = 5;
58
59 enum type {
60 __NO_TAG,
61 #define LOG_TAG(name) name,
62 LOG_TAG_LIST
63 #undef LOG_TAG
64 Count
65 };
66
67 static const char* name(LogTag::type tag) {
68 return _name[tag];
69 }
70
71 static LogTag::type from_string(const char *str);
72
73 private:
74 static const char* _name[];
75 };
76
77 typedef LogTag::type LogTagType;
78
79 #endif // SHARE_VM_LOGGING_LOGTAG_HPP
|