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6711316: Open source the Garbage-First garbage collector

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First mercurial integration of the code for the Garbage-First garbage collector.

Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
This commit is contained in:
Y. Srinivas Ramakrishna 2008-06-05 15:57:56 -07:00
parent 39463bb3fc
commit 18f3386a98
215 changed files with 36088 additions and 1249 deletions
Download patch file Download diff file Expand all files Collapse all files

100
hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp
View file

@ -28,6 +28,79 @@
#ifndef CC_INTERP
#define __ _masm->
// Misc helpers
// Do an oop store like *(base + index + offset) = val
// index can be noreg,
static void do_oop_store(InterpreterMacroAssembler* _masm,
Register base,
Register index,
int offset,
Register val,
Register tmp,
BarrierSet::Name barrier,
bool precise) {
assert(tmp != val && tmp != base && tmp != index, "register collision");
assert(index == noreg || offset == 0, "only one offset");
switch (barrier) {
#ifndef SERIALGC
case BarrierSet::G1SATBCT:
case BarrierSet::G1SATBCTLogging:
{
__ g1_write_barrier_pre( base, index, offset, tmp, /*preserve_o_regs*/true);
if (index == noreg ) {
assert(Assembler::is_simm13(offset), "fix this code");
__ store_heap_oop(val, base, offset);
} else {
__ store_heap_oop(val, base, index);
}
// No need for post barrier if storing NULL
if (val != G0) {
if (precise) {
if (index == noreg) {
__ add(base, offset, base);
} else {
__ add(base, index, base);
}
}
__ g1_write_barrier_post(base, val, tmp);
}
}
break;
#endif // SERIALGC
case BarrierSet::CardTableModRef:
case BarrierSet::CardTableExtension:
{
if (index == noreg ) {
assert(Assembler::is_simm13(offset), "fix this code");
__ store_heap_oop(val, base, offset);
} else {
__ store_heap_oop(val, base, index);
}
// No need for post barrier if storing NULL
if (val != G0) {
if (precise) {
if (index == noreg) {
__ add(base, offset, base);
} else {
__ add(base, index, base);
}
}
__ card_write_barrier_post(base, val, tmp);
}
}
break;
case BarrierSet::ModRef:
case BarrierSet::Other:
ShouldNotReachHere();
break;
default :
ShouldNotReachHere();
}
}
//----------------------------------------------------------------------------------------------------
// Platform-dependent initialization
@ -758,6 +831,8 @@ void TemplateTable::aastore() {
// O4: array element klass
// O5: value klass
// Address element(O1, 0, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
// Generate a fast subtype check. Branch to store_ok if no
// failure. Throw if failure.
__ gen_subtype_check( O5, O4, G3_scratch, G4_scratch, G1_scratch, store_ok );
@ -767,18 +842,14 @@ void TemplateTable::aastore() {
// Store is OK.
__ bind(store_ok);
__ store_heap_oop(Otos_i, O1, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
// Quote from rememberedSet.hpp: For objArrays, the precise card
// corresponding to the pointer store is dirtied so we don't need to
// scavenge the entire array.
Address element(O1, 0, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
__ add(element, O1); // address the element precisely
__ store_check(G3_scratch, O1);
do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), Otos_i, G3_scratch, _bs->kind(), true);
__ ba(false,done);
__ delayed()->inc(Lesp, 3* Interpreter::stackElementSize()); // adj sp (pops array, index and value)
__ bind(is_null);
__ store_heap_oop(Otos_i, element);
do_oop_store(_masm, O1, noreg, arrayOopDesc::base_offset_in_bytes(T_OBJECT), G0, G4_scratch, _bs->kind(), true);
__ profile_null_seen(G3_scratch);
__ inc(Lesp, 3* Interpreter::stackElementSize()); // adj sp (pops array, index and value)
__ bind(done);
@ -2449,8 +2520,9 @@ void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
// atos
__ pop_ptr();
__ verify_oop(Otos_i);
__ store_heap_oop(Otos_i, Rclass, Roffset);
__ store_check(G1_scratch, Rclass, Roffset);
do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
__ ba(false, checkVolatile);
__ delayed()->tst(Lscratch);
@ -2491,8 +2563,9 @@ void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
__ pop_ptr();
pop_and_check_object(Rclass);
__ verify_oop(Otos_i);
__ store_heap_oop(Otos_i, Rclass, Roffset);
__ store_check(G1_scratch, Rclass, Roffset);
do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
patch_bytecode(Bytecodes::_fast_aputfield, G3_scratch, G4_scratch);
__ ba(false, checkVolatile);
__ delayed()->tst(Lscratch);
@ -2646,8 +2719,7 @@ void TemplateTable::fast_storefield(TosState state) {
__ stf(FloatRegisterImpl::D, Ftos_d, Rclass, Roffset);
break;
case Bytecodes::_fast_aputfield:
__ store_heap_oop(Otos_i, Rclass, Roffset);
__ store_check(G1_scratch, Rclass, Roffset);
do_oop_store(_masm, Rclass, Roffset, 0, Otos_i, G1_scratch, _bs->kind(), false);
break;
default:
ShouldNotReachHere();