Mercurial > hg > graal-compiler
comparison agent/src/share/classes/sun/jvm/hotspot/debugger/MachineDescription.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 |
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| 110:a49a647afe9a | 113:ba764ed4b6f2 |
|---|---|
| 33 public interface MachineDescription extends Serializable { | 33 public interface MachineDescription extends Serializable { |
| 34 /** Returns the size of an address in bytes. Currently needed to be | 34 /** Returns the size of an address in bytes. Currently needed to be |
| 35 able to traverse arrays of pointers or oops. */ | 35 able to traverse arrays of pointers or oops. */ |
| 36 public long getAddressSize(); | 36 public long getAddressSize(); |
| 37 | 37 |
| 38 /** Returns the size of an address in bytes. Currently needed to be | |
| 39 able to traverse arrays of pointers or oops. (FIXME: since we're | |
| 40 already reading the Java primitive types' sizes from the remote | |
| 41 VM, it would be nice to remove this routine, using a similar | |
| 42 mechanism to how the TypeDataBase deals with primitive types.) */ | |
| 43 public long getOopSize(); | |
| 44 | |
| 45 /** Returns the maximum value of the C integer type with the given | 38 /** Returns the maximum value of the C integer type with the given |
| 46 size in bytes and signedness. Throws IllegalArgumentException if | 39 size in bytes and signedness. Throws IllegalArgumentException if |
| 47 the size in bytes is not legal for a C type (or can not be | 40 the size in bytes is not legal for a C type (or can not be |
| 48 handled by this system). Note that the current implementation | 41 handled by this system). Note that the current implementation |
| 49 does not currently handle unsigned 8-byte longs properly. */ | 42 does not currently handle unsigned 8-byte longs properly. */ |