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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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55
hotspot/src/share/vm/runtime/sharedRuntime.hpp
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@ -59,6 +59,10 @@ class SharedRuntime: AllStatic {
#endif // !PRODUCT
public:
// max bytes for each dtrace string parameter
enum { max_dtrace_string_size = 256 };
// The following arithmetic routines are used on platforms that do
// not have machine instructions to implement their functionality.
// Do not remove these.
@ -258,9 +262,6 @@ class SharedRuntime: AllStatic {
public:
static void create_native_wrapper (JavaThread* thread, methodOop method);
// Read the array of BasicTypes from a Java signature, and compute where
// compiled Java code would like to put the results. Values in reg_lo and
// reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
@ -354,6 +355,19 @@ class SharedRuntime: AllStatic {
VMRegPair *regs,
BasicType ret_type );
#ifdef HAVE_DTRACE_H
// Generate a dtrace wrapper for a given method. The method takes arguments
// in the Java compiled code convention, marshals them to the native
// convention (handlizes oops, etc), transitions to native, makes the call,
// returns to java state (possibly blocking), unhandlizes any result and
// returns.
static nmethod *generate_dtrace_nmethod(MacroAssembler* masm,
methodHandle method);
// dtrace support to convert a Java string to utf8
static void get_utf(oopDesc* src, address dst);
#endif // def HAVE_DTRACE_H
// A compiled caller has just called the interpreter, but compiled code
// exists. Patch the caller so he no longer calls into the interpreter.
static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc);
@ -492,42 +506,55 @@ class AdapterHandlerEntry : public CHeapObj {
address _c2i_unverified_entry;
public:
// The name we give all buffer blobs
static const char* name;
AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry):
_i2c_entry(i2c_entry),
_c2i_entry(c2i_entry),
_c2i_unverified_entry(c2i_unverified_entry) {
}
// The name we give all buffer blobs
static const char* name;
address get_i2c_entry() { return _i2c_entry; }
address get_c2i_entry() { return _c2i_entry; }
address get_c2i_unverified_entry() { return _c2i_unverified_entry; }
void relocate(address new_base);
#ifndef PRODUCT
void print();
#endif /* PRODUCT */
};
class AdapterHandlerLibrary: public AllStatic {
private:
static u_char _buffer[]; // the temporary code buffer
static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
enum {
AbstractMethodHandler = 1 // special handler for abstract methods
};
static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
static u_char _buffer[]; // the temporary code buffer
static void initialize();
static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
static int get_create_adapter_index(methodHandle method);
static address get_i2c_entry( int index ) { return get_entry(index)->get_i2c_entry(); }
static address get_c2i_entry( int index ) { return get_entry(index)->get_c2i_entry(); }
static address get_c2i_unverified_entry( int index ) { return get_entry(index)->get_c2i_unverified_entry(); }
static address get_i2c_entry( int index ) {
return get_entry(index)->get_i2c_entry();
}
static address get_c2i_entry( int index ) {
return get_entry(index)->get_c2i_entry();
}
static address get_c2i_unverified_entry( int index ) {
return get_entry(index)->get_c2i_unverified_entry();
}
public:
static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
static nmethod* create_native_wrapper(methodHandle method);
static AdapterHandlerEntry* get_adapter(methodHandle method) { return get_entry(get_create_adapter_index(method)); }
static AdapterHandlerEntry* get_adapter(methodHandle method) {
return get_entry(get_create_adapter_index(method));
}
#ifdef HAVE_DTRACE_H
static nmethod* create_dtrace_nmethod (methodHandle method);
#endif // HAVE_DTRACE_H
#ifndef PRODUCT
static void print_handler(CodeBlob* b);