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8037043: put Method flag bits in predictable positions

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Reviewed-by: kvn, coleenp
This commit is contained in:
Christian Thalinger 2014-03-11 14:54:47 -07:00
parent a0bb00ac27
commit 1a1f9f0871
2 changed files with 51 additions and 16 deletions
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61
hotspot/src/share/vm/oops/method.hpp
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@ -108,12 +108,16 @@ class Method : public Metadata {
#endif
u2 _method_size; // size of this object
u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none)
u1 _jfr_towrite : 1, // Flags
_caller_sensitive : 1,
_force_inline : 1,
_hidden : 1,
_dont_inline : 1,
: 3;
// Flags
enum Flags {
_jfr_towrite = 1 << 0,
_caller_sensitive = 1 << 1,
_force_inline = 1 << 2,
_dont_inline = 1 << 3,
_hidden = 1 << 4
};
u1 _flags;
#ifndef PRODUCT
int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging)
@ -759,16 +763,41 @@ class Method : public Metadata {
void init_intrinsic_id(); // updates from _none if a match
static vmSymbols::SID klass_id_for_intrinsics(Klass* holder);
bool jfr_towrite() { return _jfr_towrite; }
void set_jfr_towrite(bool x) { _jfr_towrite = x; }
bool caller_sensitive() { return _caller_sensitive; }
void set_caller_sensitive(bool x) { _caller_sensitive = x; }
bool force_inline() { return _force_inline; }
void set_force_inline(bool x) { _force_inline = x; }
bool dont_inline() { return _dont_inline; }
void set_dont_inline(bool x) { _dont_inline = x; }
bool is_hidden() { return _hidden; }
void set_hidden(bool x) { _hidden = x; }
bool jfr_towrite() {
return (_flags & _jfr_towrite) != 0;
}
void set_jfr_towrite(bool x) {
_flags = x ? (_flags | _jfr_towrite) : (_flags & ~_jfr_towrite);
}
bool caller_sensitive() {
return (_flags & _caller_sensitive) != 0;
}
void set_caller_sensitive(bool x) {
_flags = x ? (_flags | _caller_sensitive) : (_flags & ~_caller_sensitive);
}
bool force_inline() {
return (_flags & _force_inline) != 0;
}
void set_force_inline(bool x) {
_flags = x ? (_flags | _force_inline) : (_flags & ~_force_inline);
}
bool dont_inline() {
return (_flags & _dont_inline) != 0;
}
void set_dont_inline(bool x) {
_flags = x ? (_flags | _dont_inline) : (_flags & ~_dont_inline);
}
bool is_hidden() {
return (_flags & _hidden) != 0;
}
void set_hidden(bool x) {
_flags = x ? (_flags | _hidden) : (_flags & ~_hidden);
}
ConstMethod::MethodType method_type() const {
return _constMethod->method_type();
}

6
hotspot/src/share/vm/runtime/vmStructs.cpp
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@ -2336,6 +2336,12 @@ typedef TwoOopHashtable<Symbol*, mtClass> SymbolTwoOopHashtable;
/* ConstMethod anon-enum */ \
/********************************/ \
\
declare_constant(Method::_jfr_towrite) \
declare_constant(Method::_caller_sensitive) \
declare_constant(Method::_force_inline) \
declare_constant(Method::_dont_inline) \
declare_constant(Method::_hidden) \
\
declare_constant(ConstMethod::_has_linenumber_table) \
declare_constant(ConstMethod::_has_checked_exceptions) \
declare_constant(ConstMethod::_has_localvariable_table) \