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src/hotspot/share/memory/metaspace/metaspaceCommon.hpp

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rev 50187 : imported patch metaspace-split
rev 50188 : [mq]: 8176808-split-metaspace-cpp-2


  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 namespace internals {
  35 
  36 enum ChunkSizes {    // in words.
  37   ClassSpecializedChunk = 128,
  38   SpecializedChunk = 128,
  39   ClassSmallChunk = 256,
  40   SmallChunk = 512,
  41   ClassMediumChunk = 4 * K,
  42   MediumChunk = 8 * K
  43 };
  44 
  45 // Print a size, in words, scaled.
  46 void print_scaled_words(outputStream* st, size_t word_size, size_t scale = 0, int width = -1);
  47 
  48 // Convenience helper: prints a size value and a percentage.
  49 void print_scaled_words_and_percentage(outputStream* st, size_t word_size, size_t compare_word_size, size_t scale = 0, int width = -1);
  50 
  51 // Print a human readable size.
  52 // byte_size: size, in bytes, to be printed.
  53 // scale: one of 1 (byte-wise printing), sizeof(word) (word-size printing), K, M, G (scaled by KB, MB, GB respectively,
  54 //         or 0, which means the best scale is choosen dynamically.


 105 
 106 // Utility functions.
 107 size_t get_size_for_nonhumongous_chunktype(ChunkIndex chunk_type, bool is_class);
 108 ChunkIndex get_chunk_type_by_size(size_t size, bool is_class);
 109 
 110 ChunkIndex next_chunk_index(ChunkIndex i);
 111 ChunkIndex prev_chunk_index(ChunkIndex i);
 112 // Returns a descriptive name for a chunk type.
 113 const char* chunk_size_name(ChunkIndex index);
 114 
 115 // Verify chunk type.
 116 inline bool is_valid_chunktype(ChunkIndex index) {
 117   return index == SpecializedIndex || index == SmallIndex ||
 118          index == MediumIndex || index == HumongousIndex;
 119 }
 120 
 121 inline bool is_valid_nonhumongous_chunktype(ChunkIndex index) {
 122   return is_valid_chunktype(index) && index != HumongousIndex;
 123 }
 124 
 125 
 126 
 127 
 128 } // namespace internals
 129 } // namespace metaspace
 130 
 131 #endif /* SHARE_MEMORY_METASPACE_METASPACESTATISTICS_HPP_ */



  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.


 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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