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8003985: Support @Contended Annotation - JEP 142

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HotSpot changes to support @Contended annotation.

Reviewed-by: coleenp, kvn, jrose
This commit is contained in:
Aleksey Shipilev 2013-01-14 15:17:47 +01:00 • committed by Jesper Wilhelmsson
parent ae35dfeeec
commit 0614ed6542
11 changed files with 617 additions and 92 deletions
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22
hotspot/src/share/vm/classfile/classFileParser.hpp
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@ -95,17 +95,20 @@ class ClassFileParser VALUE_OBJ_CLASS_SPEC {
_method_DontInline,
_method_LambdaForm_Compiled,
_method_LambdaForm_Hidden,
_sun_misc_Contended,
_annotation_LIMIT
};
const Location _location;
int _annotations_present;
u2 _contended_group;
AnnotationCollector(Location location)
: _location(location), _annotations_present(0)
{
assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, "");
}
// If this annotation name has an ID, report it (or _none).
ID annotation_index(Symbol* name);
ID annotation_index(ClassLoaderData* loader_data, Symbol* name);
// Set the annotation name:
void set_annotation(ID id) {
assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
@ -114,6 +117,12 @@ class ClassFileParser VALUE_OBJ_CLASS_SPEC {
// Report if the annotation is present.
bool has_any_annotations() { return _annotations_present != 0; }
bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; }
void set_contended_group(u2 group) { _contended_group = group; }
u2 contended_group() { return _contended_group; }
void set_contended(bool contended) { set_annotation(_sun_misc_Contended); }
bool is_contended() { return has_annotation(_sun_misc_Contended); }
};
class FieldAnnotationCollector: public AnnotationCollector {
public:
@ -177,6 +186,14 @@ class ClassFileParser VALUE_OBJ_CLASS_SPEC {
Array<AnnotationArray*>** fields_type_annotations,
u2* java_fields_count_ptr, TRAPS);
void print_field_layout(Symbol* name,
Array<u2>* fields,
constantPoolHandle cp,
int instance_size,
int instance_fields_start,
int instance_fields_end,
int static_fields_end);
// Method parsing
methodHandle parse_method(ClassLoaderData* loader_data,
constantPoolHandle cp,
@ -247,7 +264,8 @@ class ClassFileParser VALUE_OBJ_CLASS_SPEC {
int runtime_invisible_annotations_length, TRAPS);
int skip_annotation(u1* buffer, int limit, int index);
int skip_annotation_value(u1* buffer, int limit, int index);
void parse_annotations(u1* buffer, int limit, constantPoolHandle cp,
void parse_annotations(ClassLoaderData* loader_data,
u1* buffer, int limit, constantPoolHandle cp,
/* Results (currently, only one result is supported): */
AnnotationCollector* result,
TRAPS);