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 #ifndef SHARE_MEMORY_METASPACE_METASPACECOMMON_HPP_
26 #define SHARE_MEMORY_METASPACE_METASPACECOMMON_HPP_
27
28 #include "utilities/globalDefinitions.hpp"
29
30
31 class outputStream;
32
33 namespace metaspace {
34 namespace internals {
35
36 // Print a size, in words, scaled.
37 void print_scaled_words(outputStream* st, size_t word_size, size_t scale = 0, int width = -1);
38
39 // Convenience helper: prints a size value and a percentage.
40 void print_scaled_words_and_percentage(outputStream* st, size_t word_size, size_t compare_word_size, size_t scale = 0, int width = -1);
41
42 // Print a human readable size.
43 // byte_size: size, in bytes, to be printed.
44 // scale: one of 1 (byte-wise printing), sizeof(word) (word-size printing), K, M, G (scaled by KB, MB, GB respectively,
45 // or 0, which means the best scale is choosen dynamically.
46 // width: printing width.
47 void print_human_readable_size(outputStream* st, size_t byte_size, size_t scale = 0, int width = -1);
48
49 // Prints a percentage value. Values smaller than 1% but not 0 are displayed as "<1%", values
50 // larger than 99% but not 100% are displayed as ">100%".
51 void print_percentage(outputStream* st, size_t total, size_t part);
52
53 } // namespace internals
54 } // namespace metaspace
55
56 #endif /* SHARE_MEMORY_METASPACE_METASPACESTATISTICS_HPP_ */
|
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 #ifndef SHARE_MEMORY_METASPACE_METASPACECOMMON_HPP_
26 #define SHARE_MEMORY_METASPACE_METASPACECOMMON_HPP_
27
28 #include "utilities/debug.hpp"
29 #include "utilities/globalDefinitions.hpp"
30
31 class outputStream;
32
33 namespace metaspace {
34
35 enum ChunkSizes { // in words.
36 ClassSpecializedChunk = 128,
37 SpecializedChunk = 128,
38 ClassSmallChunk = 256,
39 SmallChunk = 512,
40 ClassMediumChunk = 4 * K,
41 MediumChunk = 8 * K
42 };
43
44 // Print a size, in words, scaled.
45 void print_scaled_words(outputStream* st, size_t word_size, size_t scale = 0, int width = -1);
46
47 // Convenience helper: prints a size value and a percentage.
48 void print_scaled_words_and_percentage(outputStream* st, size_t word_size, size_t compare_word_size, size_t scale = 0, int width = -1);
49
50 // Print a human readable size.
51 // byte_size: size, in bytes, to be printed.
52 // scale: one of 1 (byte-wise printing), sizeof(word) (word-size printing), K, M, G (scaled by KB, MB, GB respectively,
53 // or 0, which means the best scale is choosen dynamically.
54 // width: printing width.
55 void print_human_readable_size(outputStream* st, size_t byte_size, size_t scale = 0, int width = -1);
56
57 // Prints a percentage value. Values smaller than 1% but not 0 are displayed as "<1%", values
58 // larger than 99% but not 100% are displayed as ">100%".
59 void print_percentage(outputStream* st, size_t total, size_t part);
60
61
62 #define assert_is_aligned(value, alignment) \
63 assert(is_aligned((value), (alignment)), \
64 SIZE_FORMAT_HEX " is not aligned to " \
65 SIZE_FORMAT, (size_t)(uintptr_t)value, (alignment))
66
67 // Internal statistics.
68 #ifdef ASSERT
69 struct internal_statistics_t {
70 // Number of allocations.
71 uintx num_allocs;
72 // Number of times a ClassLoaderMetaspace was born...
73 uintx num_metaspace_births;
74 // ... and died.
75 uintx num_metaspace_deaths;
76 // Number of times VirtualSpaceListNodes were created...
77 uintx num_vsnodes_created;
78 // ... and purged.
79 uintx num_vsnodes_purged;
80 // Number of times we expanded the committed section of the space.
81 uintx num_committed_space_expanded;
82 // Number of deallocations
83 uintx num_deallocs;
84 // Number of deallocations triggered from outside ("real" deallocations).
85 uintx num_external_deallocs;
86 // Number of times an allocation was satisfied from deallocated blocks.
87 uintx num_allocs_from_deallocated_blocks;
88 };
89 extern internal_statistics_t g_internal_statistics;
90 #endif
91
92 // ChunkIndex defines the type of chunk.
93 // Chunk types differ by size: specialized < small < medium, chunks
94 // larger than medium are humongous chunks of varying size.
95 enum ChunkIndex {
96 ZeroIndex = 0,
97 SpecializedIndex = ZeroIndex,
98 SmallIndex = SpecializedIndex + 1,
99 MediumIndex = SmallIndex + 1,
100 HumongousIndex = MediumIndex + 1,
101 NumberOfFreeLists = 3,
102 NumberOfInUseLists = 4
103 };
104
105 // Utility functions.
106 size_t get_size_for_nonhumongous_chunktype(ChunkIndex chunk_type, bool is_class);
107 ChunkIndex get_chunk_type_by_size(size_t size, bool is_class);
108
109 ChunkIndex next_chunk_index(ChunkIndex i);
110 ChunkIndex prev_chunk_index(ChunkIndex i);
111 // Returns a descriptive name for a chunk type.
112 const char* chunk_size_name(ChunkIndex index);
113
114 // Verify chunk type.
115 inline bool is_valid_chunktype(ChunkIndex index) {
116 return index == SpecializedIndex || index == SmallIndex ||
117 index == MediumIndex || index == HumongousIndex;
118 }
119
120 inline bool is_valid_nonhumongous_chunktype(ChunkIndex index) {
121 return is_valid_chunktype(index) && index != HumongousIndex;
122 }
123
124 } // namespace metaspace
125
126 #endif /* SHARE_MEMORY_METASPACE_METASPACESTATISTICS_HPP_ */
127
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