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8215205: javaVFrame much slower than vframeStream

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Reviewed-by: mchung, thartmann
This commit is contained in:
Dean Long 2018-12-18 12:36:27 -08:00
parent 84105b36fd
commit 32ea2e5343
7 changed files with 75 additions and 3 deletions
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9
src/hotspot/share/code/scopeDesc.hpp
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@ -67,6 +67,9 @@ class ScopeDesc : public ResourceObj {
// avoid a .hpp-.hpp dependency.)
ScopeDesc(const CompiledMethod* code, int decode_offset, bool reexecute, bool rethrow_exception, bool return_oop);
// Direct access to scope
ScopeDesc* at_offset(int decode_offset) { return new ScopeDesc(this, decode_offset); }
// JVM state
Method* method() const { return _method; }
int bci() const { return _bci; }
@ -85,12 +88,16 @@ class ScopeDesc : public ResourceObj {
// Returns where the scope was decoded
int decode_offset() const { return _decode_offset; }
int sender_decode_offset() const { return _sender_decode_offset; }
// Tells whether sender() returns NULL
bool is_top() const;
private:
// Alternative constructor
void initialize(const ScopeDesc* parent, int decode_offset);
// Alternative constructors
ScopeDesc(const ScopeDesc* parent);
ScopeDesc(const ScopeDesc* parent, int decode_offset);
// JVM state
Method* _method;