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8048721: -XX:+PrintCompilation prints negative bci for non entrant OSR methods

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Removed 'InvalidOSREntryBci' and checking nmethod::_state instead to determine if an osr method is non-entrant.

Reviewed-by: kvn, vlivanov, drchase
This commit is contained in:
Tobias Hartmann 2014-09-15 08:08:22 +02:00
parent f082ff287e
commit dd6285d984
12 changed files with 25 additions and 39 deletions
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7
hotspot/agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java
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@ -107,7 +107,6 @@ public class VM {
private Runtime1 runtime1;
/** These constants come from globalDefinitions.hpp */
private int invocationEntryBCI;
private int invalidOSREntryBCI;
private ReversePtrs revPtrs;
private VMRegImpl vmregImpl;
private int reserveForAllocationPrefetch;
@ -295,7 +294,6 @@ public class VM {
stackBias = db.lookupIntConstant("STACK_BIAS").intValue();
invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue();
invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue();
// We infer the presence of C1 or C2 from a couple of fields we
// already have present in the type database
@ -733,11 +731,6 @@ public class VM {
return invocationEntryBCI;
}
/** FIXME: figure out where to stick this */
public int getInvalidOSREntryBCI() {
return invalidOSREntryBCI;
}
// FIXME: figure out where to stick this
public boolean wizardMode() {
return true;

6
hotspot/src/cpu/ppc/vm/interp_masm_ppc_64.cpp
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@ -1166,9 +1166,9 @@ void InterpreterMacroAssembler::test_backedge_count_for_osr(Register backedge_co
beq(CCR0, overflow_with_error);
// Has the nmethod been invalidated already?
lwz(Rtmp, nmethod::entry_bci_offset(), R3_RET);
cmpwi(CCR0, Rtmp, InvalidOSREntryBci);
beq(CCR0, overflow_with_error);
lbz(Rtmp, nmethod::state_offset(), R3_RET);
cmpwi(CCR0, Rtmp, nmethod::in_use);
bne(CCR0, overflow_with_error);
// Migrate the interpreter frame off of the stack.
// We can use all registers because we will not return to interpreter from this point.

6
hotspot/src/cpu/ppc/vm/templateTable_ppc_64.cpp
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@ -1674,9 +1674,9 @@ void TemplateTable::branch(bool is_jsr, bool is_wide) {
__ beq(CCR0, Lforward);
// Has the nmethod been invalidated already?
__ lwz(R0, nmethod::entry_bci_offset(), R3_RET);
__ cmpwi(CCR0, R0, InvalidOSREntryBci);
__ beq(CCR0, Lforward);
__ lbz(R0, nmethod::state_offset(), R3_RET);
__ cmpwi(CCR0, R0, nmethod::in_use);
__ bne(CCR0, Lforward);
// Migrate the interpreter frame off of the stack.
// We can use all registers because we will not return to interpreter from this point.

4
hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp
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@ -2407,8 +2407,8 @@ void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_c
br_null_short(O0, Assembler::pn, overflow_with_error);
// Has the nmethod been invalidated already?
ld(O0, nmethod::entry_bci_offset(), O2);
cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, overflow_with_error);
ldub(O0, nmethod::state_offset(), O2);
cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, overflow_with_error);
// migrate the interpreter frame off of the stack

4
hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp
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@ -1636,8 +1636,8 @@ void TemplateTable::branch(bool is_jsr, bool is_wide) {
__ br_null_short(O0, Assembler::pn, Lforward);
// Has the nmethod been invalidated already?
__ ld(O0, nmethod::entry_bci_offset(), O2);
__ cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, Lforward);
__ ldub(O0, nmethod::state_offset(), O2);
__ cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, Lforward);
// migrate the interpreter frame off of the stack

8
hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp
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@ -1724,9 +1724,8 @@ void TemplateTable::branch(bool is_jsr, bool is_wide) {
__ testptr(rax, rax); // test result
__ jcc(Assembler::zero, dispatch); // no osr if null
// nmethod may have been invalidated (VM may block upon call_VM return)
__ movl(rcx, Address(rax, nmethod::entry_bci_offset()));
__ cmpl(rcx, InvalidOSREntryBci);
__ jcc(Assembler::equal, dispatch);
__ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
__ jcc(Assembler::notEqual, dispatch);
// We have the address of an on stack replacement routine in rax,
// We need to prepare to execute the OSR method. First we must
@ -1734,8 +1733,7 @@ void TemplateTable::branch(bool is_jsr, bool is_wide) {
__ mov(rbx, rax); // save the nmethod
const Register thread = rcx;
__ get_thread(thread);
__ get_thread(rcx);
call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
// rax, is OSR buffer, move it to expected parameter location
__ mov(rcx, rax);

5
hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp
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@ -1751,9 +1751,8 @@ void TemplateTable::branch(bool is_jsr, bool is_wide) {
__ testptr(rax, rax); // test result
__ jcc(Assembler::zero, dispatch); // no osr if null
// nmethod may have been invalidated (VM may block upon call_VM return)
__ movl(rcx, Address(rax, nmethod::entry_bci_offset()));
__ cmpl(rcx, InvalidOSREntryBci);
__ jcc(Assembler::equal, dispatch);
__ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
__ jcc(Assembler::notEqual, dispatch);
// We have the address of an on stack replacement routine in eax
// We need to prepare to execute the OSR method. First we must

2
hotspot/src/share/vm/code/nmethod.cpp
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@ -1364,8 +1364,6 @@ void nmethod::invalidate_osr_method() {
// Remove from list of active nmethods
if (method() != NULL)
method()->method_holder()->remove_osr_nmethod(this);
// Set entry as invalid
_entry_bci = InvalidOSREntryBci;
}
void nmethod::log_state_change() const {

16
hotspot/src/share/vm/code/nmethod.hpp
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@ -202,13 +202,6 @@ class nmethod : public CodeBlob {
bool _oops_are_stale; // indicates that it's no longer safe to access oops section
#endif
enum { in_use = 0, // executable nmethod
not_entrant = 1, // marked for deoptimization but activations may still exist,
// will be transformed to zombie when all activations are gone
zombie = 2, // no activations exist, nmethod is ready for purge
unloaded = 3 }; // there should be no activations, should not be called,
// will be transformed to zombie immediately
jbyte _scavenge_root_state;
#if INCLUDE_RTM_OPT
@ -431,6 +424,13 @@ class nmethod : public CodeBlob {
address entry_point() const { return _entry_point; } // normal entry point
address verified_entry_point() const { return _verified_entry_point; } // if klass is correct
enum { in_use = 0, // executable nmethod
not_entrant = 1, // marked for deoptimization but activations may still exist,
// will be transformed to zombie when all activations are gone
zombie = 2, // no activations exist, nmethod is ready for purge
unloaded = 3 }; // there should be no activations, should not be called,
// will be transformed to zombie immediately
// flag accessing and manipulation
bool is_in_use() const { return _state == in_use; }
bool is_alive() const { return _state == in_use || _state == not_entrant; }
@ -759,7 +759,7 @@ public:
// support for code generation
static int verified_entry_point_offset() { return offset_of(nmethod, _verified_entry_point); }
static int osr_entry_point_offset() { return offset_of(nmethod, _osr_entry_point); }
static int entry_bci_offset() { return offset_of(nmethod, _entry_bci); }
static int state_offset() { return offset_of(nmethod, _state); }
// RedefineClasses support. Mark metadata in nmethods as on_stack so that
// redefine classes doesn't purge it.

2
hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp
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@ -330,7 +330,7 @@
if (do_OSR) { \
nmethod* osr_nmethod; \
OSR_REQUEST(osr_nmethod, branch_pc); \
if (osr_nmethod != NULL && osr_nmethod->osr_entry_bci() != InvalidOSREntryBci) { \
if (osr_nmethod != NULL && osr_nmethod->is_in_use()) { \
intptr_t* buf; \
/* Call OSR migration with last java frame only, no checks. */ \
CALL_VM_NAKED_LJF(buf=SharedRuntime::OSR_migration_begin(THREAD)); \

1
hotspot/src/share/vm/runtime/vmStructs.cpp
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@ -2518,7 +2518,6 @@ typedef TwoOopHashtable<Symbol*, mtClass> SymbolTwoOopHashtable;
/*********************************************/ \
\
declare_constant(InvocationEntryBci) \
declare_constant(InvalidOSREntryBci) \
\
/***************/ \
/* OopMapValue */ \

3
hotspot/src/share/vm/utilities/globalDefinitions.hpp
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@ -882,8 +882,7 @@ enum JavaThreadState {
// Handy constants for deciding which compiler mode to use.
enum MethodCompilation {
InvocationEntryBci = -1, // i.e., not a on-stack replacement compilation
InvalidOSREntryBci = -2
InvocationEntryBci = -1 // i.e., not a on-stack replacement compilation
};
// Enumeration to distinguish tiers of compilation