9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27
28 #include "memory/metaspace/metaspaceCommon.hpp"
29 #include "utilities/globalDefinitions.hpp"
30 #include "utilities/ostream.hpp"
31
32 namespace metaspace {
33 namespace internals {
34
35 // Print a size, in words, scaled.
36 void print_scaled_words(outputStream* st, size_t word_size, size_t scale, int width) {
37 print_human_readable_size(st, word_size * sizeof(MetaWord), scale, width);
38 }
39
40 // Convenience helper: prints a size value and a percentage.
41 void print_scaled_words_and_percentage(outputStream* st, size_t word_size, size_t compare_word_size, size_t scale, int width) {
42 print_scaled_words(st, word_size, scale, width);
43 st->print(" (");
44 print_percentage(st, compare_word_size, word_size);
45 st->print(")");
46 }
47
48
49 // Print a human readable size.
50 // byte_size: size, in bytes, to be printed.
51 // scale: one of 1 (byte-wise printing), sizeof(word) (word-size printing), K, M, G (scaled by KB, MB, GB respectively,
52 // or 0, which means the best scale is choosen dynamically.
53 // width: printing width.
54 void print_human_readable_size(outputStream* st, size_t byte_size, size_t scale, int width) {
110 // larger than 99% but not 100% are displayed as ">100%".
111 void print_percentage(outputStream* st, size_t total, size_t part) {
112 if (total == 0) {
113 st->print(" ?%%");
114 } else if (part == 0) {
115 st->print(" 0%%");
116 } else if (part == total) {
117 st->print("100%%");
118 } else {
119 // Note: clearly print very-small-but-not-0% and very-large-but-not-100% percentages.
120 float p = ((float)part / total) * 100.0f;
121 if (p < 1.0f) {
122 st->print(" <1%%");
123 } else if (p > 99.0f){
124 st->print(">99%%");
125 } else {
126 st->print("%3.0f%%", p);
127 }
128 }
129 }
130
131 } // namespace internals
132 } // namespace metaspace
|
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27
28 #include "memory/metaspace/metaspaceCommon.hpp"
29 #include "memory/metaspace/virtualSpaceNode.hpp"
30 #include "utilities/debug.hpp"
31 #include "utilities/globalDefinitions.hpp"
32 #include "utilities/ostream.hpp"
33
34 namespace metaspace {
35 namespace internals {
36
37 DEBUG_ONLY(internal_statistics_t g_internal_statistics;)
38
39 // Print a size, in words, scaled.
40 void print_scaled_words(outputStream* st, size_t word_size, size_t scale, int width) {
41 print_human_readable_size(st, word_size * sizeof(MetaWord), scale, width);
42 }
43
44 // Convenience helper: prints a size value and a percentage.
45 void print_scaled_words_and_percentage(outputStream* st, size_t word_size, size_t compare_word_size, size_t scale, int width) {
46 print_scaled_words(st, word_size, scale, width);
47 st->print(" (");
48 print_percentage(st, compare_word_size, word_size);
49 st->print(")");
50 }
51
52
53 // Print a human readable size.
54 // byte_size: size, in bytes, to be printed.
55 // scale: one of 1 (byte-wise printing), sizeof(word) (word-size printing), K, M, G (scaled by KB, MB, GB respectively,
56 // or 0, which means the best scale is choosen dynamically.
57 // width: printing width.
58 void print_human_readable_size(outputStream* st, size_t byte_size, size_t scale, int width) {
114 // larger than 99% but not 100% are displayed as ">100%".
115 void print_percentage(outputStream* st, size_t total, size_t part) {
116 if (total == 0) {
117 st->print(" ?%%");
118 } else if (part == 0) {
119 st->print(" 0%%");
120 } else if (part == total) {
121 st->print("100%%");
122 } else {
123 // Note: clearly print very-small-but-not-0% and very-large-but-not-100% percentages.
124 float p = ((float)part / total) * 100.0f;
125 if (p < 1.0f) {
126 st->print(" <1%%");
127 } else if (p > 99.0f){
128 st->print(">99%%");
129 } else {
130 st->print("%3.0f%%", p);
131 }
132 }
133 }
134
135 // Returns size of this chunk type.
136 size_t get_size_for_nonhumongous_chunktype(ChunkIndex chunktype, bool is_class) {
137 assert(is_valid_nonhumongous_chunktype(chunktype), "invalid chunk type.");
138 size_t size = 0;
139 if (is_class) {
140 switch(chunktype) {
141 case SpecializedIndex: size = ClassSpecializedChunk; break;
142 case SmallIndex: size = ClassSmallChunk; break;
143 case MediumIndex: size = ClassMediumChunk; break;
144 default:
145 ShouldNotReachHere();
146 }
147 } else {
148 switch(chunktype) {
149 case SpecializedIndex: size = SpecializedChunk; break;
150 case SmallIndex: size = SmallChunk; break;
151 case MediumIndex: size = MediumChunk; break;
152 default:
153 ShouldNotReachHere();
154 }
155 }
156 return size;
157 }
158
159 ChunkIndex get_chunk_type_by_size(size_t size, bool is_class) {
160 if (is_class) {
161 if (size == ClassSpecializedChunk) {
162 return SpecializedIndex;
163 } else if (size == ClassSmallChunk) {
164 return SmallIndex;
165 } else if (size == ClassMediumChunk) {
166 return MediumIndex;
167 } else if (size > ClassMediumChunk) {
168 // A valid humongous chunk size is a multiple of the smallest chunk size.
169 assert(is_aligned(size, ClassSpecializedChunk), "Invalid chunk size");
170 return HumongousIndex;
171 }
172 } else {
173 if (size == SpecializedChunk) {
174 return SpecializedIndex;
175 } else if (size == SmallChunk) {
176 return SmallIndex;
177 } else if (size == MediumChunk) {
178 return MediumIndex;
179 } else if (size > MediumChunk) {
180 // A valid humongous chunk size is a multiple of the smallest chunk size.
181 assert(is_aligned(size, SpecializedChunk), "Invalid chunk size");
182 return HumongousIndex;
183 }
184 }
185 ShouldNotReachHere();
186 return (ChunkIndex)-1;
187 }
188
189 ChunkIndex next_chunk_index(ChunkIndex i) {
190 assert(i < NumberOfInUseLists, "Out of bound");
191 return (ChunkIndex) (i+1);
192 }
193
194 ChunkIndex prev_chunk_index(ChunkIndex i) {
195 assert(i > ZeroIndex, "Out of bound");
196 return (ChunkIndex) (i-1);
197 }
198
199
200 } // namespace internals
201 } // namespace metaspace
|