Mercurial > hg > truffle
diff src/share/vm/oops/instanceKlass.hpp @ 4739:52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
Summary: Change instanceKlass::_init_state field to u1 type.
Reviewed-by: bdelsart, coleenp, dholmes, phh, never
Contributed-by: Jiangli Zhou <jiangli.zhou@oracle.com>
| author | coleenp |
|---|---|
| date | Tue, 06 Dec 2011 18:28:51 -0500 |
| parents | 75c0a73eee98 |
| children | cd5d8cafcc84 |
line wrap: on
line diff
--- a/src/share/vm/oops/instanceKlass.hpp Tue Nov 29 14:44:44 2011 -0500 +++ b/src/share/vm/oops/instanceKlass.hpp Tue Dec 06 18:28:51 2011 -0500 @@ -233,7 +233,6 @@ u2 _minor_version; // minor version number of class file u2 _major_version; // major version number of class file - ClassState _init_state; // state of class Thread* _init_thread; // Pointer to current thread doing initialization (to handle recusive initialization) int _vtable_len; // length of Java vtable (in words) int _itable_len; // length of Java itable (in words) @@ -257,6 +256,11 @@ JvmtiCachedClassFieldMap* _jvmti_cached_class_field_map; // JVMTI: used during heap iteration volatile u2 _idnum_allocated_count; // JNI/JVMTI: increments with the addition of methods, old ids don't change + // Class states are defined as ClassState (see above). + // Place the _init_state here to utilize the unused 2-byte after + // _idnum_allocated_count. + u1 _init_state; // state of class + // Compact the following four boolean flags into 1-bit each. These four flags // were defined as separate boolean fields and each was 1-byte before. Since // there are 2 bytes unused after the _idnum_allocated_count field, place the @@ -393,7 +397,7 @@ bool is_being_initialized() const { return _init_state == being_initialized; } bool is_in_error_state() const { return _init_state == initialization_error; } bool is_reentrant_initialization(Thread *thread) { return thread == _init_thread; } - int get_init_state() { return _init_state; } // Useful for debugging + ClassState init_state() { return (ClassState)_init_state; } bool is_rewritten() const { return (_misc_flags & REWRITTEN) != 0; } // defineClass specified verification @@ -778,7 +782,7 @@ #ifdef ASSERT void set_init_state(ClassState state); #else - void set_init_state(ClassState state) { _init_state = state; } + void set_init_state(ClassState state) { _init_state = (u1)state; } #endif void set_rewritten() { _misc_flags |= REWRITTEN; } void set_init_thread(Thread *thread) { _init_thread = thread; }