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8046936: JEP 270: Reserved Stack Areas for Critical Sections

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Reviewed-by: acorn, dcubed
This commit is contained in:
Frederic Parain 2015-12-11 09:07:07 -08:00
parent f6440f7fb1
commit ef800bd53f
69 changed files with 987 additions and 64 deletions
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27
hotspot/src/share/vm/oops/method.hpp
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@ -75,16 +75,17 @@ class Method : public Metadata {
// Flags
enum Flags {
_jfr_towrite = 1 << 0,
_caller_sensitive = 1 << 1,
_force_inline = 1 << 2,
_dont_inline = 1 << 3,
_hidden = 1 << 4,
_has_injected_profile = 1 << 5,
_running_emcp = 1 << 6,
_intrinsic_candidate = 1 << 7
_jfr_towrite = 1 << 0,
_caller_sensitive = 1 << 1,
_force_inline = 1 << 2,
_dont_inline = 1 << 3,
_hidden = 1 << 4,
_has_injected_profile = 1 << 5,
_running_emcp = 1 << 6,
_intrinsic_candidate = 1 << 7,
_reserved_stack_access = 1 << 8
};
mutable u1 _flags;
mutable u2 _flags;
#ifndef PRODUCT
int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging)
@ -835,6 +836,14 @@ class Method : public Metadata {
_flags = x ? (_flags | _has_injected_profile) : (_flags & ~_has_injected_profile);
}
bool has_reserved_stack_access() {
return (_flags & _reserved_stack_access) != 0;
}
void set_has_reserved_stack_access(bool x) {
_flags = x ? (_flags | _reserved_stack_access) : (_flags & ~_reserved_stack_access);
}
ConstMethod::MethodType method_type() const {
return _constMethod->method_type();
}