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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes

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Initial checkin of JSDT code

Reviewed-by: acorn, sbohne
This commit is contained in:
Keith McGuigan 2008-04-17 22:18:15 -04:00
parent 849e0dfc44
commit f072bc9d3f
26 changed files with 2935 additions and 26 deletions
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28
hotspot/src/share/vm/code/nmethod.hpp
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@ -140,6 +140,9 @@ class nmethod : public CodeBlob {
int _exception_offset;
// All deoptee's will resume execution at this location described by this offset
int _deoptimize_offset;
#ifdef HAVE_DTRACE_H
int _trap_offset;
#endif // def HAVE_DTRACE_H
int _stub_offset;
int _consts_offset;
int _scopes_data_offset;
@ -211,6 +214,15 @@ class nmethod : public CodeBlob {
ByteSize basic_lock_sp_offset, /* synchronized natives only */
OopMapSet* oop_maps);
#ifdef HAVE_DTRACE_H
// For native wrappers
nmethod(methodOop method,
int nmethod_size,
CodeOffsets* offsets,
CodeBuffer *code_buffer,
int frame_size);
#endif // def HAVE_DTRACE_H
// Creation support
nmethod(methodOop method,
int nmethod_size,
@ -272,6 +284,22 @@ class nmethod : public CodeBlob {
ByteSize basic_lock_sp_offset,
OopMapSet* oop_maps);
#ifdef HAVE_DTRACE_H
// The method we generate for a dtrace probe has to look
// like an nmethod as far as the rest of the system is concerned
// which is somewhat unfortunate.
static nmethod* new_dtrace_nmethod(methodHandle method,
CodeBuffer *code_buffer,
int vep_offset,
int trap_offset,
int frame_complete,
int frame_size);
int trap_offset() const { return _trap_offset; }
address trap_address() const { return code_begin() + _trap_offset; }
#endif // def HAVE_DTRACE_H
// accessors
methodOop method() const { return _method; }
AbstractCompiler* compiler() const { return _compiler; }