Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/arguments.cpp
src/share/vm/runtime/arguments.cpp
- changeset 5088
- 64340da5b68c
- parent 5004
- e01e02a9fcb6
- child 5093
- 9b77ca4ce35e
equal
deleted
inserted
replaced
| 5087:28ae1d38d296 | 5088:64340da5b68c |
|---|---|
| 3082 } | 3082 } |
| 3083 return JNI_OK; | 3083 return JNI_OK; |
| 3084 } | 3084 } |
| 3085 | 3085 |
| 3086 void Arguments::set_shared_spaces_flags() { | 3086 void Arguments::set_shared_spaces_flags() { |
| 3087 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; | 3087 #ifdef _LP64 |
| 3088 const bool might_share = must_share || UseSharedSpaces; | 3088 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
| 3089 | 3089 |
| 3090 // CompressedOops cannot be used with CDS. The offsets of oopmaps and | 3090 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
| 3091 // static fields are incorrect in the archive. With some more clever | 3091 // static fields are incorrect in the archive. With some more clever |
| 3092 // initialization, this restriction can probably be lifted. | 3092 // initialization, this restriction can probably be lifted. |
| 3093 // ??? UseLargePages might be okay now | 3093 if (UseCompressedOops) { |
| 3094 const bool cannot_share = UseCompressedOops || | 3094 if (must_share) { |
| 3095 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); | 3095 warning("disabling compressed oops because of %s", |
| 3096 if (cannot_share) { | 3096 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); |
| 3097 if (must_share) { | 3097 FLAG_SET_CMDLINE(bool, UseCompressedOops, false); |
| 3098 warning("disabling large pages %s" | 3098 FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false); |
| 3099 "because of %s", "" LP64_ONLY("and compressed oops "), | 3099 } else { |
| 3100 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | 3100 // Prefer compressed oops to class data sharing |
| 3101 FLAG_SET_CMDLINE(bool, UseLargePages, false); | 3101 if (UseSharedSpaces && Verbose) { |
| 3102 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | 3102 warning("turning off use of shared archive because of compressed oops"); |
| 3103 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); | 3103 } |
| 3104 } else { | 3104 no_shared_spaces(); |
| 3105 // Prefer compressed oops and large pages to class data sharing | 3105 } |
| 3106 if (UseSharedSpaces && Verbose) { | 3106 } |
| 3107 warning("turning off use of shared archive because of large pages%s", | 3107 #endif |
| 3108 "" LP64_ONLY(" and/or compressed oops")); | |
| 3109 } | |
| 3110 no_shared_spaces(); | |
| 3111 } | |
| 3112 } else if (UseLargePages && might_share) { | |
| 3113 // Disable large pages to allow shared spaces. This is sub-optimal, since | |
| 3114 // there may not even be a shared archive to use. | |
| 3115 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 3116 } | |
| 3117 | 3108 |
| 3118 if (DumpSharedSpaces) { | 3109 if (DumpSharedSpaces) { |
| 3119 if (RequireSharedSpaces) { | 3110 if (RequireSharedSpaces) { |
| 3120 warning("cannot dump shared archive while using shared archive"); | 3111 warning("cannot dump shared archive while using shared archive"); |
| 3121 } | 3112 } |
