--- a/hotspot/src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -664,7 +664,7 @@
// Use temps to avoid kills
LIR_Opr t1 = FrameMap::G1_opr;
LIR_Opr t2 = FrameMap::G3_opr;
- LIR_Opr addr = (type == objectType) ? new_register(T_OBJECT) : new_pointer_register();
+ LIR_Opr addr = new_pointer_register();
// get address of field
obj.load_item();
--- a/hotspot/src/cpu/sparc/vm/globals_sparc.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/cpu/sparc/vm/globals_sparc.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -62,3 +62,5 @@
define_pd_global(bool, RewriteBytecodes, true);
define_pd_global(bool, RewriteFrequentPairs, true);
+
+define_pd_global(bool, UseMembar, false);
--- a/hotspot/src/cpu/x86/vm/c1_CodeStubs_x86.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/cpu/x86/vm/c1_CodeStubs_x86.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -499,7 +499,7 @@
Register new_val_reg = new_val()->as_register();
__ cmpptr(new_val_reg, (int32_t) NULL_WORD);
__ jcc(Assembler::equal, _continuation);
- ce->store_parameter(addr()->as_register(), 0);
+ ce->store_parameter(addr()->as_pointer_register(), 0);
__ call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id)));
__ jmp(_continuation);
}
--- a/hotspot/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -765,7 +765,7 @@
ShouldNotReachHere();
}
- LIR_Opr addr = (type == objectType) ? new_register(T_OBJECT) : new_pointer_register();
+ LIR_Opr addr = new_pointer_register();
LIR_Address* a;
if(offset.result()->is_constant()) {
a = new LIR_Address(obj.result(),
--- a/hotspot/src/cpu/x86/vm/globals_x86.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/cpu/x86/vm/globals_x86.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -63,3 +63,5 @@
define_pd_global(bool, RewriteBytecodes, true);
define_pd_global(bool, RewriteFrequentPairs, true);
+
+define_pd_global(bool, UseMembar, false);
--- a/hotspot/src/cpu/zero/vm/globals_zero.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/cpu/zero/vm/globals_zero.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -45,3 +45,5 @@
define_pd_global(bool, RewriteBytecodes, true);
define_pd_global(bool, RewriteFrequentPairs, true);
+
+define_pd_global(bool, UseMembar, false);
--- a/hotspot/src/os/linux/vm/attachListener_linux.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/os/linux/vm/attachListener_linux.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -176,10 +176,10 @@
int n = snprintf(path, UNIX_PATH_MAX, "%s/.java_pid%d",
os::get_temp_directory(), os::current_process_id());
- if (n <= (int)UNIX_PATH_MAX) {
+ if (n < (int)UNIX_PATH_MAX) {
n = snprintf(initial_path, UNIX_PATH_MAX, "%s.tmp", path);
}
- if (n > (int)UNIX_PATH_MAX) {
+ if (n >= (int)UNIX_PATH_MAX) {
return -1;
}
--- a/hotspot/src/os/linux/vm/os_linux.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/os/linux/vm/os_linux.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -827,8 +827,10 @@
switch (thr_type) {
case os::java_thread:
- // Java threads use ThreadStackSize which default value can be changed with the flag -Xss
- if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create();
+ // Java threads use ThreadStackSize which default value can be
+ // changed with the flag -Xss
+ assert (JavaThread::stack_size_at_create() > 0, "this should be set");
+ stack_size = JavaThread::stack_size_at_create();
break;
case os::compiler_thread:
if (CompilerThreadStackSize > 0) {
@@ -3922,12 +3924,21 @@
Linux::signal_sets_init();
Linux::install_signal_handlers();
+ // Check minimum allowable stack size for thread creation and to initialize
+ // the java system classes, including StackOverflowError - depends on page
+ // size. Add a page for compiler2 recursion in main thread.
+ // Add in 2*BytesPerWord times page size to account for VM stack during
+ // class initialization depending on 32 or 64 bit VM.
+ os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
+ 2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::page_size());
+
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
- threadStackSizeInBytes < Linux::min_stack_allowed) {
+ threadStackSizeInBytes < os::Linux::min_stack_allowed) {
tty->print_cr("\nThe stack size specified is too small, "
"Specify at least %dk",
- Linux::min_stack_allowed / K);
+ os::Linux::min_stack_allowed/ K);
return JNI_ERR;
}
@@ -4839,7 +4850,7 @@
// Next, demultiplex/decode time arguments
timespec absTime;
- if (time < 0) { // don't wait at all
+ if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all
return;
}
if (time > 0) {
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -4878,18 +4878,17 @@
// Check minimum allowable stack size for thread creation and to initialize
// the java system classes, including StackOverflowError - depends on page
// size. Add a page for compiler2 recursion in main thread.
- // Add in BytesPerWord times page size to account for VM stack during
+ // Add in 2*BytesPerWord times page size to account for VM stack during
// class initialization depending on 32 or 64 bit VM.
- guarantee((Solaris::min_stack_allowed >=
- (StackYellowPages+StackRedPages+StackShadowPages+BytesPerWord
- COMPILER2_PRESENT(+1)) * page_size),
- "need to increase Solaris::min_stack_allowed on this platform");
+ os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed,
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
+ 2*BytesPerWord COMPILER2_PRESENT(+1)) * page_size);
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
- threadStackSizeInBytes < Solaris::min_stack_allowed) {
+ threadStackSizeInBytes < os::Solaris::min_stack_allowed) {
tty->print_cr("\nThe stack size specified is too small, Specify at least %dk",
- Solaris::min_stack_allowed/K);
+ os::Solaris::min_stack_allowed/K);
return JNI_ERR;
}
@@ -5837,7 +5836,7 @@
// First, demultiplex/decode time arguments
timespec absTime;
- if (time < 0) { // don't wait at all
+ if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all
return;
}
if (time > 0) {
--- a/hotspot/src/os/windows/vm/os_windows.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/os/windows/vm/os_windows.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -3311,7 +3311,6 @@
}
}
-
// this is called _after_ the global arguments have been parsed
jint os::init_2(void) {
// Allocate a single page and mark it as readable for safepoint polling
@@ -3390,6 +3389,21 @@
actual_reserve_size = default_reserve_size;
}
+ // Check minimum allowable stack size for thread creation and to initialize
+ // the java system classes, including StackOverflowError - depends on page
+ // size. Add a page for compiler2 recursion in main thread.
+ // Add in 2*BytesPerWord times page size to account for VM stack during
+ // class initialization depending on 32 or 64 bit VM.
+ size_t min_stack_allowed =
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
+ 2*BytesPerWord COMPILER2_PRESENT(+1)) * os::vm_page_size();
+ if (actual_reserve_size < min_stack_allowed) {
+ tty->print_cr("\nThe stack size specified is too small, "
+ "Specify at least %dk",
+ min_stack_allowed / K);
+ return JNI_ERR;
+ }
+
JavaThread::set_stack_size_at_create(stack_commit_size);
// Calculate theoretical max. size of Threads to guard gainst artifical
@@ -3992,7 +4006,7 @@
if (time < 0) { // don't wait
return;
}
- else if (time == 0) {
+ else if (time == 0 && !isAbsolute) {
time = INFINITE;
}
else if (isAbsolute) {
--- a/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -1350,7 +1350,6 @@
addr = ptr;
}
assert(addr->is_register(), "must be a register at this point");
- assert(addr->type() == T_OBJECT, "addr should point to an object");
LIR_Opr xor_res = new_pointer_register();
LIR_Opr xor_shift_res = new_pointer_register();
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -791,7 +791,7 @@
int _worker_i;
public:
RebuildRSOutOfRegionClosure(G1CollectedHeap* g1, int worker_i = 0) :
- _cl(g1->g1_rem_set()->as_HRInto_G1RemSet(), worker_i),
+ _cl(g1->g1_rem_set(), worker_i),
_worker_i(worker_i),
_g1h(g1)
{ }
@@ -890,7 +890,7 @@
abandon_cur_alloc_region();
abandon_gc_alloc_regions();
assert(_cur_alloc_region == NULL, "Invariant.");
- g1_rem_set()->as_HRInto_G1RemSet()->cleanupHRRS();
+ g1_rem_set()->cleanupHRRS();
tear_down_region_lists();
set_used_regions_to_need_zero_fill();
@@ -1506,15 +1506,11 @@
}
// Also create a G1 rem set.
- if (G1UseHRIntoRS) {
- if (mr_bs()->is_a(BarrierSet::CardTableModRef)) {
- _g1_rem_set = new HRInto_G1RemSet(this, (CardTableModRefBS*)mr_bs());
- } else {
- vm_exit_during_initialization("G1 requires a cardtable mod ref bs.");
- return JNI_ENOMEM;
- }
+ if (mr_bs()->is_a(BarrierSet::CardTableModRef)) {
+ _g1_rem_set = new G1RemSet(this, (CardTableModRefBS*)mr_bs());
} else {
- _g1_rem_set = new StupidG1RemSet(this);
+ vm_exit_during_initialization("G1 requires a cardtable mod ref bs.");
+ return JNI_ENOMEM;
}
// Carve out the G1 part of the heap.
@@ -2706,8 +2702,7 @@
}
size_t G1CollectedHeap::cards_scanned() {
- HRInto_G1RemSet* g1_rset = (HRInto_G1RemSet*) g1_rem_set();
- return g1_rset->cardsScanned();
+ return g1_rem_set()->cardsScanned();
}
void
@@ -3850,6 +3845,54 @@
undo_waste() * HeapWordSize / K);
}
+#ifdef ASSERT
+bool G1ParScanThreadState::verify_ref(narrowOop* ref) const {
+ assert(ref != NULL, "invariant");
+ assert(UseCompressedOops, "sanity");
+ assert(!has_partial_array_mask(ref), err_msg("ref=" PTR_FORMAT, ref));
+ oop p = oopDesc::load_decode_heap_oop(ref);
+ assert(_g1h->is_in_g1_reserved(p),
+ err_msg("ref=" PTR_FORMAT " p=" PTR_FORMAT, ref, intptr_t(p)));
+ return true;
+}
+
+bool G1ParScanThreadState::verify_ref(oop* ref) const {
+ assert(ref != NULL, "invariant");
+ if (has_partial_array_mask(ref)) {
+ // Must be in the collection set--it's already been copied.
+ oop p = clear_partial_array_mask(ref);
+ assert(_g1h->obj_in_cs(p),
+ err_msg("ref=" PTR_FORMAT " p=" PTR_FORMAT, ref, intptr_t(p)));
+ } else {
+ oop p = oopDesc::load_decode_heap_oop(ref);
+ assert(_g1h->is_in_g1_reserved(p),
+ err_msg("ref=" PTR_FORMAT " p=" PTR_FORMAT, ref, intptr_t(p)));
+ }
+ return true;
+}
+
+bool G1ParScanThreadState::verify_task(StarTask ref) const {
+ if (ref.is_narrow()) {
+ return verify_ref((narrowOop*) ref);
+ } else {
+ return verify_ref((oop*) ref);
+ }
+}
+#endif // ASSERT
+
+void G1ParScanThreadState::trim_queue() {
+ StarTask ref;
+ do {
+ // Drain the overflow stack first, so other threads can steal.
+ while (refs()->pop_overflow(ref)) {
+ deal_with_reference(ref);
+ }
+ while (refs()->pop_local(ref)) {
+ deal_with_reference(ref);
+ }
+ } while (!refs()->is_empty());
+}
+
G1ParClosureSuper::G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
_g1(g1), _g1_rem(_g1->g1_rem_set()), _cm(_g1->concurrent_mark()),
_par_scan_state(par_scan_state) { }
@@ -4052,38 +4095,39 @@
: _g1h(g1h), _par_scan_state(par_scan_state),
_queues(queues), _terminator(terminator) {}
- void do_void() {
- G1ParScanThreadState* pss = par_scan_state();
- while (true) {
+ void do_void();
+
+private:
+ inline bool offer_termination();
+};
+
+bool G1ParEvacuateFollowersClosure::offer_termination() {
+ G1ParScanThreadState* const pss = par_scan_state();
+ pss->start_term_time();
+ const bool res = terminator()->offer_termination();
+ pss->end_term_time();
+ return res;
+}
+
+void G1ParEvacuateFollowersClosure::do_void() {
+ StarTask stolen_task;
+ G1ParScanThreadState* const pss = par_scan_state();
+ pss->trim_queue();
+
+ do {
+ while (queues()->steal(pss->queue_num(), pss->hash_seed(), stolen_task)) {
+ assert(pss->verify_task(stolen_task), "sanity");
+ if (stolen_task.is_narrow()) {
+ pss->push_on_queue((narrowOop*) stolen_task);
+ } else {
+ pss->push_on_queue((oop*) stolen_task);
+ }
pss->trim_queue();
-
- StarTask stolen_task;
- if (queues()->steal(pss->queue_num(), pss->hash_seed(), stolen_task)) {
- // slightly paranoid tests; I'm trying to catch potential
- // problems before we go into push_on_queue to know where the
- // problem is coming from
- assert((oop*)stolen_task != NULL, "Error");
- if (stolen_task.is_narrow()) {
- assert(UseCompressedOops, "Error");
- narrowOop* p = (narrowOop*) stolen_task;
- assert(has_partial_array_mask(p) ||
- _g1h->is_in_g1_reserved(oopDesc::load_decode_heap_oop(p)), "Error");
- pss->push_on_queue(p);
- } else {
- oop* p = (oop*) stolen_task;
- assert(has_partial_array_mask(p) || _g1h->is_in_g1_reserved(*p), "Error");
- pss->push_on_queue(p);
- }
- continue;
- }
- pss->start_term_time();
- if (terminator()->offer_termination()) break;
- pss->end_term_time();
}
- pss->end_term_time();
- pss->retire_alloc_buffers();
- }
-};
+ } while (!offer_termination());
+
+ pss->retire_alloc_buffers();
+}
class G1ParTask : public AbstractGangTask {
protected:
@@ -4182,8 +4226,7 @@
pss.print_termination_stats(i);
}
- assert(pss.refs_to_scan() == 0, "Task queue should be empty");
- assert(pss.overflowed_refs_to_scan() == 0, "Overflow queue should be empty");
+ assert(pss.refs()->is_empty(), "should be empty");
double end_time_ms = os::elapsedTime() * 1000.0;
_g1h->g1_policy()->record_gc_worker_end_time(i, end_time_ms);
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -1651,49 +1651,17 @@
size_t alloc_buffer_waste() const { return _alloc_buffer_waste; }
size_t undo_waste() const { return _undo_waste; }
+#ifdef ASSERT
+ bool verify_ref(narrowOop* ref) const;
+ bool verify_ref(oop* ref) const;
+ bool verify_task(StarTask ref) const;
+#endif // ASSERT
+
template <class T> void push_on_queue(T* ref) {
- assert(ref != NULL, "invariant");
- assert(has_partial_array_mask(ref) ||
- _g1h->is_in_g1_reserved(oopDesc::load_decode_heap_oop(ref)), "invariant");
-#ifdef ASSERT
- if (has_partial_array_mask(ref)) {
- oop p = clear_partial_array_mask(ref);
- // Verify that we point into the CS
- assert(_g1h->obj_in_cs(p), "Should be in CS");
- }
-#endif
+ assert(verify_ref(ref), "sanity");
refs()->push(ref);
}
- void pop_from_queue(StarTask& ref) {
- if (refs()->pop_local(ref)) {
- assert((oop*)ref != NULL, "pop_local() returned true");
- assert(UseCompressedOops || !ref.is_narrow(), "Error");
- assert(has_partial_array_mask((oop*)ref) ||
- _g1h->is_in_g1_reserved(ref.is_narrow() ? oopDesc::load_decode_heap_oop((narrowOop*)ref)
- : oopDesc::load_decode_heap_oop((oop*)ref)),
- "invariant");
- } else {
- StarTask null_task;
- ref = null_task;
- }
- }
-
- void pop_from_overflow_queue(StarTask& ref) {
- StarTask new_ref;
- refs()->pop_overflow(new_ref);
- assert((oop*)new_ref != NULL, "pop() from a local non-empty stack");
- assert(UseCompressedOops || !new_ref.is_narrow(), "Error");
- assert(has_partial_array_mask((oop*)new_ref) ||
- _g1h->is_in_g1_reserved(new_ref.is_narrow() ? oopDesc::load_decode_heap_oop((narrowOop*)new_ref)
- : oopDesc::load_decode_heap_oop((oop*)new_ref)),
- "invariant");
- ref = new_ref;
- }
-
- int refs_to_scan() { return (int)refs()->size(); }
- int overflowed_refs_to_scan() { return (int)refs()->overflow_stack()->size(); }
-
template <class T> void update_rs(HeapRegion* from, T* p, int tid) {
if (G1DeferredRSUpdate) {
deferred_rs_update(from, p, tid);
@@ -1818,59 +1786,15 @@
}
}
-public:
- void trim_queue() {
- // I've replicated the loop twice, first to drain the overflow
- // queue, second to drain the task queue. This is better than
- // having a single loop, which checks both conditions and, inside
- // it, either pops the overflow queue or the task queue, as each
- // loop is tighter. Also, the decision to drain the overflow queue
- // first is not arbitrary, as the overflow queue is not visible
- // to the other workers, whereas the task queue is. So, we want to
- // drain the "invisible" entries first, while allowing the other
- // workers to potentially steal the "visible" entries.
-
- while (refs_to_scan() > 0 || overflowed_refs_to_scan() > 0) {
- while (overflowed_refs_to_scan() > 0) {
- StarTask ref_to_scan;
- assert((oop*)ref_to_scan == NULL, "Constructed above");
- pop_from_overflow_queue(ref_to_scan);
- // We shouldn't have pushed it on the queue if it was not
- // pointing into the CSet.
- assert((oop*)ref_to_scan != NULL, "Follows from inner loop invariant");
- if (ref_to_scan.is_narrow()) {
- assert(UseCompressedOops, "Error");
- narrowOop* p = (narrowOop*)ref_to_scan;
- assert(!has_partial_array_mask(p) &&
- _g1h->is_in_g1_reserved(oopDesc::load_decode_heap_oop(p)), "sanity");
- deal_with_reference(p);
- } else {
- oop* p = (oop*)ref_to_scan;
- assert((has_partial_array_mask(p) && _g1h->is_in_g1_reserved(clear_partial_array_mask(p))) ||
- _g1h->is_in_g1_reserved(oopDesc::load_decode_heap_oop(p)), "sanity");
- deal_with_reference(p);
- }
- }
-
- while (refs_to_scan() > 0) {
- StarTask ref_to_scan;
- assert((oop*)ref_to_scan == NULL, "Constructed above");
- pop_from_queue(ref_to_scan);
- if ((oop*)ref_to_scan != NULL) {
- if (ref_to_scan.is_narrow()) {
- assert(UseCompressedOops, "Error");
- narrowOop* p = (narrowOop*)ref_to_scan;
- assert(!has_partial_array_mask(p) &&
- _g1h->is_in_g1_reserved(oopDesc::load_decode_heap_oop(p)), "sanity");
- deal_with_reference(p);
- } else {
- oop* p = (oop*)ref_to_scan;
- assert((has_partial_array_mask(p) && _g1h->obj_in_cs(clear_partial_array_mask(p))) ||
- _g1h->is_in_g1_reserved(oopDesc::load_decode_heap_oop(p)), "sanity");
- deal_with_reference(p);
- }
- }
- }
+ void deal_with_reference(StarTask ref) {
+ assert(verify_task(ref), "sanity");
+ if (ref.is_narrow()) {
+ deal_with_reference((narrowOop*)ref);
+ } else {
+ deal_with_reference((oop*)ref);
}
}
+
+public:
+ void trim_queue();
};
--- a/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -25,8 +25,6 @@
class HeapRegion;
class G1CollectedHeap;
class G1RemSet;
-class HRInto_G1RemSet;
-class G1RemSet;
class ConcurrentMark;
class DirtyCardToOopClosure;
class CMBitMap;
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -97,13 +97,6 @@
}
};
-void
-StupidG1RemSet::oops_into_collection_set_do(OopsInHeapRegionClosure* oc,
- int worker_i) {
- IntoCSRegionClosure rc(_g1, oc);
- _g1->heap_region_iterate(&rc);
-}
-
class VerifyRSCleanCardOopClosure: public OopClosure {
G1CollectedHeap* _g1;
public:
@@ -119,8 +112,9 @@
}
};
-HRInto_G1RemSet::HRInto_G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs)
- : G1RemSet(g1), _ct_bs(ct_bs), _g1p(_g1->g1_policy()),
+G1RemSet::G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs)
+ : _g1(g1), _conc_refine_cards(0),
+ _ct_bs(ct_bs), _g1p(_g1->g1_policy()),
_cg1r(g1->concurrent_g1_refine()),
_traversal_in_progress(false),
_cset_rs_update_cl(NULL),
@@ -134,7 +128,7 @@
}
}
-HRInto_G1RemSet::~HRInto_G1RemSet() {
+G1RemSet::~G1RemSet() {
delete _seq_task;
for (uint i = 0; i < n_workers(); i++) {
assert(_cset_rs_update_cl[i] == NULL, "it should be");
@@ -277,7 +271,7 @@
// p threads
// Then thread t will start at region t * floor (n/p)
-HeapRegion* HRInto_G1RemSet::calculateStartRegion(int worker_i) {
+HeapRegion* G1RemSet::calculateStartRegion(int worker_i) {
HeapRegion* result = _g1p->collection_set();
if (ParallelGCThreads > 0) {
size_t cs_size = _g1p->collection_set_size();
@@ -290,7 +284,7 @@
return result;
}
-void HRInto_G1RemSet::scanRS(OopsInHeapRegionClosure* oc, int worker_i) {
+void G1RemSet::scanRS(OopsInHeapRegionClosure* oc, int worker_i) {
double rs_time_start = os::elapsedTime();
HeapRegion *startRegion = calculateStartRegion(worker_i);
@@ -340,7 +334,7 @@
}
};
-void HRInto_G1RemSet::updateRS(DirtyCardQueue* into_cset_dcq, int worker_i) {
+void G1RemSet::updateRS(DirtyCardQueue* into_cset_dcq, int worker_i) {
double start = os::elapsedTime();
// Apply the given closure to all remaining log entries.
RefineRecordRefsIntoCSCardTableEntryClosure into_cset_update_rs_cl(_g1, into_cset_dcq);
@@ -439,12 +433,11 @@
}
};
-void HRInto_G1RemSet::cleanupHRRS() {
+void G1RemSet::cleanupHRRS() {
HeapRegionRemSet::cleanup();
}
-void
-HRInto_G1RemSet::oops_into_collection_set_do(OopsInHeapRegionClosure* oc,
+void G1RemSet::oops_into_collection_set_do(OopsInHeapRegionClosure* oc,
int worker_i) {
#if CARD_REPEAT_HISTO
ct_freq_update_histo_and_reset();
@@ -508,8 +501,7 @@
_cset_rs_update_cl[worker_i] = NULL;
}
-void HRInto_G1RemSet::
-prepare_for_oops_into_collection_set_do() {
+void G1RemSet::prepare_for_oops_into_collection_set_do() {
#if G1_REM_SET_LOGGING
PrintRSClosure cl;
_g1->collection_set_iterate(&cl);
@@ -581,7 +573,7 @@
// RSet updating,
// * the post-write barrier shouldn't be logging updates to young
// regions (but there is a situation where this can happen - see
- // the comment in HRInto_G1RemSet::concurrentRefineOneCard below -
+ // the comment in G1RemSet::concurrentRefineOneCard below -
// that should not be applicable here), and
// * during actual RSet updating, the filtering of cards in young
// regions in HeapRegion::oops_on_card_seq_iterate_careful is
@@ -601,7 +593,7 @@
}
};
-void HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do() {
+void G1RemSet::cleanup_after_oops_into_collection_set_do() {
guarantee( _cards_scanned != NULL, "invariant" );
_total_cards_scanned = 0;
for (uint i = 0; i < n_workers(); ++i)
@@ -692,12 +684,12 @@
}
};
-void HRInto_G1RemSet::scrub(BitMap* region_bm, BitMap* card_bm) {
+void G1RemSet::scrub(BitMap* region_bm, BitMap* card_bm) {
ScrubRSClosure scrub_cl(region_bm, card_bm);
_g1->heap_region_iterate(&scrub_cl);
}
-void HRInto_G1RemSet::scrub_par(BitMap* region_bm, BitMap* card_bm,
+void G1RemSet::scrub_par(BitMap* region_bm, BitMap* card_bm,
int worker_num, int claim_val) {
ScrubRSClosure scrub_cl(region_bm, card_bm);
_g1->heap_region_par_iterate_chunked(&scrub_cl, worker_num, claim_val);
@@ -741,7 +733,7 @@
virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
};
-bool HRInto_G1RemSet::concurrentRefineOneCard_impl(jbyte* card_ptr, int worker_i,
+bool G1RemSet::concurrentRefineOneCard_impl(jbyte* card_ptr, int worker_i,
bool check_for_refs_into_cset) {
// Construct the region representing the card.
HeapWord* start = _ct_bs->addr_for(card_ptr);
@@ -820,7 +812,7 @@
return trigger_cl.value();
}
-bool HRInto_G1RemSet::concurrentRefineOneCard(jbyte* card_ptr, int worker_i,
+bool G1RemSet::concurrentRefineOneCard(jbyte* card_ptr, int worker_i,
bool check_for_refs_into_cset) {
// If the card is no longer dirty, nothing to do.
if (*card_ptr != CardTableModRefBS::dirty_card_val()) {
@@ -995,7 +987,7 @@
}
};
-void HRInto_G1RemSet::print_summary_info() {
+void G1RemSet::print_summary_info() {
G1CollectedHeap* g1 = G1CollectedHeap::heap();
#if CARD_REPEAT_HISTO
@@ -1029,30 +1021,26 @@
g1->concurrent_g1_refine()->threads_do(&p);
gclog_or_tty->print_cr("");
- if (G1UseHRIntoRS) {
- HRRSStatsIter blk;
- g1->heap_region_iterate(&blk);
- gclog_or_tty->print_cr(" Total heap region rem set sizes = " SIZE_FORMAT "K."
- " Max = " SIZE_FORMAT "K.",
- blk.total_mem_sz()/K, blk.max_mem_sz()/K);
- gclog_or_tty->print_cr(" Static structures = " SIZE_FORMAT "K,"
- " free_lists = " SIZE_FORMAT "K.",
- HeapRegionRemSet::static_mem_size()/K,
- HeapRegionRemSet::fl_mem_size()/K);
- gclog_or_tty->print_cr(" %d occupied cards represented.",
- blk.occupied());
- gclog_or_tty->print_cr(" Max sz region = [" PTR_FORMAT ", " PTR_FORMAT " )"
- ", cap = " SIZE_FORMAT "K, occ = " SIZE_FORMAT "K.",
- blk.max_mem_sz_region()->bottom(), blk.max_mem_sz_region()->end(),
- (blk.max_mem_sz_region()->rem_set()->mem_size() + K - 1)/K,
- (blk.max_mem_sz_region()->rem_set()->occupied() + K - 1)/K);
- gclog_or_tty->print_cr(" Did %d coarsenings.",
- HeapRegionRemSet::n_coarsenings());
-
- }
+ HRRSStatsIter blk;
+ g1->heap_region_iterate(&blk);
+ gclog_or_tty->print_cr(" Total heap region rem set sizes = " SIZE_FORMAT "K."
+ " Max = " SIZE_FORMAT "K.",
+ blk.total_mem_sz()/K, blk.max_mem_sz()/K);
+ gclog_or_tty->print_cr(" Static structures = " SIZE_FORMAT "K,"
+ " free_lists = " SIZE_FORMAT "K.",
+ HeapRegionRemSet::static_mem_size()/K,
+ HeapRegionRemSet::fl_mem_size()/K);
+ gclog_or_tty->print_cr(" %d occupied cards represented.",
+ blk.occupied());
+ gclog_or_tty->print_cr(" Max sz region = [" PTR_FORMAT ", " PTR_FORMAT " )"
+ ", cap = " SIZE_FORMAT "K, occ = " SIZE_FORMAT "K.",
+ blk.max_mem_sz_region()->bottom(), blk.max_mem_sz_region()->end(),
+ (blk.max_mem_sz_region()->rem_set()->mem_size() + K - 1)/K,
+ (blk.max_mem_sz_region()->rem_set()->occupied() + K - 1)/K);
+ gclog_or_tty->print_cr(" Did %d coarsenings.", HeapRegionRemSet::n_coarsenings());
}
-void HRInto_G1RemSet::prepare_for_verify() {
+void G1RemSet::prepare_for_verify() {
if (G1HRRSFlushLogBuffersOnVerify &&
(VerifyBeforeGC || VerifyAfterGC)
&& !_g1->full_collection()) {
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -27,107 +27,18 @@
class G1CollectedHeap;
class CardTableModRefBarrierSet;
-class HRInto_G1RemSet;
class ConcurrentG1Refine;
+// A G1RemSet in which each heap region has a rem set that records the
+// external heap references into it. Uses a mod ref bs to track updates,
+// so that they can be used to update the individual region remsets.
+
class G1RemSet: public CHeapObj {
protected:
G1CollectedHeap* _g1;
unsigned _conc_refine_cards;
size_t n_workers();
-public:
- G1RemSet(G1CollectedHeap* g1) :
- _g1(g1), _conc_refine_cards(0)
- {}
-
- // Invoke "blk->do_oop" on all pointers into the CS in object in regions
- // outside the CS (having invoked "blk->set_region" to set the "from"
- // region correctly beforehand.) The "worker_i" param is for the
- // parallel case where the number of the worker thread calling this
- // function can be helpful in partitioning the work to be done. It
- // should be the same as the "i" passed to the calling thread's
- // work(i) function. In the sequential case this param will be ingored.
- virtual void oops_into_collection_set_do(OopsInHeapRegionClosure* blk,
- int worker_i) = 0;
-
- // Prepare for and cleanup after an oops_into_collection_set_do
- // call. Must call each of these once before and after (in sequential
- // code) any threads call oops into collection set do. (This offers an
- // opportunity to sequential setup and teardown of structures needed by a
- // parallel iteration over the CS's RS.)
- virtual void prepare_for_oops_into_collection_set_do() = 0;
- virtual void cleanup_after_oops_into_collection_set_do() = 0;
-
- // If "this" is of the given subtype, return "this", else "NULL".
- virtual HRInto_G1RemSet* as_HRInto_G1RemSet() { return NULL; }
-
- // Record, if necessary, the fact that *p (where "p" is in region "from",
- // and is, a fortiori, required to be non-NULL) has changed to its new value.
- virtual void write_ref(HeapRegion* from, oop* p) = 0;
- virtual void write_ref(HeapRegion* from, narrowOop* p) = 0;
- virtual void par_write_ref(HeapRegion* from, oop* p, int tid) = 0;
- virtual void par_write_ref(HeapRegion* from, narrowOop* p, int tid) = 0;
-
- // Requires "region_bm" and "card_bm" to be bitmaps with 1 bit per region
- // or card, respectively, such that a region or card with a corresponding
- // 0 bit contains no part of any live object. Eliminates any remembered
- // set entries that correspond to dead heap ranges.
- virtual void scrub(BitMap* region_bm, BitMap* card_bm) = 0;
- // Like the above, but assumes is called in parallel: "worker_num" is the
- // parallel thread id of the current thread, and "claim_val" is the
- // value that should be used to claim heap regions.
- virtual void scrub_par(BitMap* region_bm, BitMap* card_bm,
- int worker_num, int claim_val) = 0;
-
- // Refine the card corresponding to "card_ptr". If "sts" is non-NULL,
- // join and leave around parts that must be atomic wrt GC. (NULL means
- // being done at a safepoint.)
- // With some implementations of this routine, when check_for_refs_into_cset
- // is true, a true result may be returned if the given card contains oops
- // that have references into the current collection set.
- virtual bool concurrentRefineOneCard(jbyte* card_ptr, int worker_i,
- bool check_for_refs_into_cset) {
- return false;
- }
-
- // Print any relevant summary info.
- virtual void print_summary_info() {}
-
- // Prepare remebered set for verification.
- virtual void prepare_for_verify() {};
-};
-
-
-// The simplest possible G1RemSet: iterates over all objects in non-CS
-// regions, searching for pointers into the CS.
-class StupidG1RemSet: public G1RemSet {
-public:
- StupidG1RemSet(G1CollectedHeap* g1) : G1RemSet(g1) {}
-
- void oops_into_collection_set_do(OopsInHeapRegionClosure* blk,
- int worker_i);
-
- void prepare_for_oops_into_collection_set_do() {}
- void cleanup_after_oops_into_collection_set_do() {}
-
- // Nothing is necessary in the version below.
- void write_ref(HeapRegion* from, oop* p) {}
- void write_ref(HeapRegion* from, narrowOop* p) {}
- void par_write_ref(HeapRegion* from, oop* p, int tid) {}
- void par_write_ref(HeapRegion* from, narrowOop* p, int tid) {}
-
- void scrub(BitMap* region_bm, BitMap* card_bm) {}
- void scrub_par(BitMap* region_bm, BitMap* card_bm,
- int worker_num, int claim_val) {}
-
-};
-
-// A G1RemSet in which each heap region has a rem set that records the
-// external heap references into it. Uses a mod ref bs to track updates,
-// so that they can be used to update the individual region remsets.
-
-class HRInto_G1RemSet: public G1RemSet {
protected:
enum SomePrivateConstants {
UpdateRStoMergeSync = 0,
@@ -175,28 +86,32 @@
// scanned.
void cleanupHRRS();
- HRInto_G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs);
- ~HRInto_G1RemSet();
+ G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs);
+ ~G1RemSet();
+ // Invoke "blk->do_oop" on all pointers into the CS in objects in regions
+ // outside the CS (having invoked "blk->set_region" to set the "from"
+ // region correctly beforehand.) The "worker_i" param is for the
+ // parallel case where the number of the worker thread calling this
+ // function can be helpful in partitioning the work to be done. It
+ // should be the same as the "i" passed to the calling thread's
+ // work(i) function. In the sequential case this param will be ingored.
void oops_into_collection_set_do(OopsInHeapRegionClosure* blk,
int worker_i);
+ // Prepare for and cleanup after an oops_into_collection_set_do
+ // call. Must call each of these once before and after (in sequential
+ // code) any threads call oops_into_collection_set_do. (This offers an
+ // opportunity to sequential setup and teardown of structures needed by a
+ // parallel iteration over the CS's RS.)
void prepare_for_oops_into_collection_set_do();
void cleanup_after_oops_into_collection_set_do();
+
void scanRS(OopsInHeapRegionClosure* oc, int worker_i);
- template <class T> void scanNewRefsRS_work(OopsInHeapRegionClosure* oc, int worker_i);
- void scanNewRefsRS(OopsInHeapRegionClosure* oc, int worker_i) {
- if (UseCompressedOops) {
- scanNewRefsRS_work<narrowOop>(oc, worker_i);
- } else {
- scanNewRefsRS_work<oop>(oc, worker_i);
- }
- }
void updateRS(DirtyCardQueue* into_cset_dcq, int worker_i);
+
HeapRegion* calculateStartRegion(int i);
- HRInto_G1RemSet* as_HRInto_G1RemSet() { return this; }
-
CardTableModRefBS* ct_bs() { return _ct_bs; }
size_t cardsScanned() { return _total_cards_scanned; }
@@ -219,17 +134,31 @@
bool self_forwarded(oop obj);
+ // Requires "region_bm" and "card_bm" to be bitmaps with 1 bit per region
+ // or card, respectively, such that a region or card with a corresponding
+ // 0 bit contains no part of any live object. Eliminates any remembered
+ // set entries that correspond to dead heap ranges.
void scrub(BitMap* region_bm, BitMap* card_bm);
+
+ // Like the above, but assumes is called in parallel: "worker_num" is the
+ // parallel thread id of the current thread, and "claim_val" is the
+ // value that should be used to claim heap regions.
void scrub_par(BitMap* region_bm, BitMap* card_bm,
int worker_num, int claim_val);
- // If check_for_refs_into_cset is true then a true result is returned
- // if the card contains oops that have references into the current
- // collection set.
+ // Refine the card corresponding to "card_ptr". If "sts" is non-NULL,
+ // join and leave around parts that must be atomic wrt GC. (NULL means
+ // being done at a safepoint.)
+ // If check_for_refs_into_cset is true, a true result is returned
+ // if the given card contains oops that have references into the
+ // current collection set.
virtual bool concurrentRefineOneCard(jbyte* card_ptr, int worker_i,
bool check_for_refs_into_cset);
+ // Print any relevant summary info.
virtual void print_summary_info();
+
+ // Prepare remembered set for verification.
virtual void prepare_for_verify();
};
@@ -250,13 +179,13 @@
class UpdateRSOopClosure: public OopClosure {
HeapRegion* _from;
- HRInto_G1RemSet* _rs;
+ G1RemSet* _rs;
int _worker_i;
template <class T> void do_oop_work(T* p);
public:
- UpdateRSOopClosure(HRInto_G1RemSet* rs, int worker_i = 0) :
+ UpdateRSOopClosure(G1RemSet* rs, int worker_i = 0) :
_from(NULL), _rs(rs), _worker_i(worker_i) {
guarantee(_rs != NULL, "Requires an HRIntoG1RemSet");
}
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -30,16 +30,18 @@
}
}
-template <class T> inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, T* p) {
+template <class T>
+inline void G1RemSet::write_ref_nv(HeapRegion* from, T* p) {
par_write_ref_nv(from, p, 0);
}
-inline bool HRInto_G1RemSet::self_forwarded(oop obj) {
+inline bool G1RemSet::self_forwarded(oop obj) {
bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
return result;
}
-template <class T> inline void HRInto_G1RemSet::par_write_ref_nv(HeapRegion* from, T* p, int tid) {
+template <class T>
+inline void G1RemSet::par_write_ref_nv(HeapRegion* from, T* p, int tid) {
oop obj = oopDesc::load_decode_heap_oop(p);
#ifdef ASSERT
// can't do because of races
@@ -77,7 +79,7 @@
// Deferred updates to the CSet are either discarded (in the normal case),
// or processed (if an evacuation failure occurs) at the end
// of the collection.
- // See HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do().
+ // See G1RemSet::cleanup_after_oops_into_collection_set_do().
} else {
#if G1_REM_SET_LOGGING
gclog_or_tty->print_cr("Adding " PTR_FORMAT " (" PTR_FORMAT ") to RS"
@@ -91,12 +93,14 @@
}
}
-template <class T> inline void UpdateRSOopClosure::do_oop_work(T* p) {
+template <class T>
+inline void UpdateRSOopClosure::do_oop_work(T* p) {
assert(_from != NULL, "from region must be non-NULL");
_rs->par_write_ref(_from, p, _worker_i);
}
-template <class T> inline void UpdateRSetImmediate::do_oop_work(T* p) {
+template <class T>
+inline void UpdateRSetImmediate::do_oop_work(T* p) {
assert(_from->is_in_reserved(p), "paranoia");
T heap_oop = oopDesc::load_heap_oop(p);
if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) {
--- a/hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -40,9 +40,6 @@
develop(intx, G1PolicyVerbose, 0, \
"The verbosity level on G1 policy decisions") \
\
- develop(bool, G1UseHRIntoRS, true, \
- "Determines whether the 'advanced' HR Into rem set is used.") \
- \
develop(intx, G1MarkingVerboseLevel, 0, \
"Level (0-4) of verboseness of the marking code") \
\
--- a/hotspot/src/share/vm/gc_implementation/includeDB_gc_g1 Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/gc_implementation/includeDB_gc_g1 Wed Oct 20 17:07:25 2010 -0700
@@ -310,10 +310,16 @@
heapRegionSeq.inline.hpp heapRegionSeq.hpp
+instanceKlass.cpp g1RemSet.inline.hpp
+
+instanceRefKlass.cpp g1RemSet.inline.hpp
+
klass.hpp g1OopClosures.hpp
memoryService.cpp g1MemoryPool.hpp
+objArrayKlass.cpp g1RemSet.inline.hpp
+
ptrQueue.cpp allocation.hpp
ptrQueue.cpp allocation.inline.hpp
ptrQueue.cpp mutex.hpp
--- a/hotspot/src/share/vm/includeDB_core Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/includeDB_core Wed Oct 20 17:07:25 2010 -0700
@@ -3231,6 +3231,7 @@
orderAccess.hpp os.hpp
orderAccess_<os_arch>.inline.hpp orderAccess.hpp
+orderAccess_<os_arch>.inline.hpp vm_version_<arch>.hpp
os.cpp allocation.inline.hpp
os.cpp arguments.hpp
--- a/hotspot/src/share/vm/runtime/arguments.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/runtime/arguments.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -119,11 +119,8 @@
PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false));
PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name",
"Java Virtual Machine Specification", false));
- PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor",
- JDK_Version::is_gte_jdk17x_version() ? "Oracle Corporation" : "Sun Microsystems Inc.", false));
PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false));
PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false));
- PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false));
PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true));
// following are JVMTI agent writeable properties.
@@ -151,6 +148,14 @@
os::init_system_properties_values();
}
+
+ // Update/Initialize System properties after JDK version number is known
+void Arguments::init_version_specific_system_properties() {
+ PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor",
+ JDK_Version::is_gte_jdk17x_version() ? "Oracle Corporation" : "Sun Microsystems Inc.", false));
+ PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false));
+}
+
/**
* Provide a slightly more user-friendly way of eliminating -XX flags.
* When a flag is eliminated, it can be added to this list in order to
@@ -1676,7 +1681,8 @@
bool status = true;
status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages");
status = status && verify_min_value(StackRedPages, 1, "StackRedPages");
- status = status && verify_min_value(StackShadowPages, 1, "StackShadowPages");
+ // greater stack shadow pages can't generate instruction to bang stack
+ status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages");
return status;
}
@@ -2973,6 +2979,13 @@
UseCompressedOops = false;
#endif
+#if defined(_LP64)
+ if ((DumpSharedSpaces || RequireSharedSpaces) && UseCompressedOops) {
+ // Disable compressed oops with shared spaces
+ UseCompressedOops = false;
+ }
+#endif
+
// Set object alignment values.
set_object_alignment();
--- a/hotspot/src/share/vm/runtime/arguments.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/runtime/arguments.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -484,6 +484,9 @@
// System properties
static void init_system_properties();
+ // Update/Initialize System properties after JDK version number is known
+ static void init_version_specific_system_properties();
+
// Property List manipulation
static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
static void PropertyList_add(SystemProperty** plist, const char* k, char* v);
--- a/hotspot/src/share/vm/runtime/globals.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/runtime/globals.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -327,10 +327,10 @@
/* UseMembar is theoretically a temp flag used for memory barrier \
* removal testing. It was supposed to be removed before FCS but has \
* been re-added (see 6401008) */ \
- product(bool, UseMembar, false, \
+ product_pd(bool, UseMembar, \
"(Unstable) Issues membars on thread state transitions") \
\
- /* Temporary: See 6948537 */ \
+ /* Temporary: See 6948537 */ \
experimental(bool, UseMemSetInBOT, true, \
"(Unstable) uses memset in BOT updates in GC code") \
\
@@ -822,6 +822,9 @@
develop(bool, PrintJVMWarnings, false, \
"Prints warnings for unimplemented JVM functions") \
\
+ product(bool, PrintWarnings, true, \
+ "Prints JVM warnings to output stream") \
+ \
notproduct(uintx, WarnOnStalledSpinLock, 0, \
"Prints warnings for stalled SpinLocks") \
\
@@ -3542,7 +3545,7 @@
product(uintx, SharedDummyBlockSize, 512*M, \
"Size of dummy block used to shift heap addresses (in bytes)") \
\
- product(uintx, SharedReadWriteSize, 12*M, \
+ product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \
"Size of read-write space in permanent generation (in bytes)") \
\
product(uintx, SharedReadOnlySize, 10*M, \
--- a/hotspot/src/share/vm/runtime/sharedRuntime.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/runtime/sharedRuntime.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -302,6 +302,9 @@
return (f <= (double)0.0) ? (double)0.0 - f : f;
}
+#endif
+
+#if defined(__SOFTFP__) || defined(PPC)
double SharedRuntime::dsqrt(double f) {
return sqrt(f);
}
--- a/hotspot/src/share/vm/runtime/sharedRuntime.hpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/runtime/sharedRuntime.hpp Wed Oct 20 17:07:25 2010 -0700
@@ -116,6 +116,9 @@
#if defined(__SOFTFP__) || defined(E500V2)
static double dabs(double f);
+#endif
+
+#if defined(__SOFTFP__) || defined(PPC)
static double dsqrt(double f);
#endif
--- a/hotspot/src/share/vm/runtime/thread.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/runtime/thread.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -2921,6 +2921,9 @@
// So that JDK version can be used as a discrimintor when parsing arguments
JDK_Version_init();
+ // Update/Initialize System properties after JDK version number is known
+ Arguments::init_version_specific_system_properties();
+
// Parse arguments
jint parse_result = Arguments::parse(args);
if (parse_result != JNI_OK) return parse_result;
--- a/hotspot/src/share/vm/utilities/debug.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/utilities/debug.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -51,14 +51,16 @@
void warning(const char* format, ...) {
- // In case error happens before init or during shutdown
- if (tty == NULL) ostream_init();
+ if (PrintWarnings) {
+ // In case error happens before init or during shutdown
+ if (tty == NULL) ostream_init();
- tty->print("%s warning: ", VM_Version::vm_name());
- va_list ap;
- va_start(ap, format);
- tty->vprint_cr(format, ap);
- va_end(ap);
+ tty->print("%s warning: ", VM_Version::vm_name());
+ va_list ap;
+ va_start(ap, format);
+ tty->vprint_cr(format, ap);
+ va_end(ap);
+ }
if (BreakAtWarning) BREAKPOINT;
}
--- a/hotspot/src/share/vm/utilities/exceptions.cpp Wed Jul 05 17:24:57 2017 +0200
+++ b/hotspot/src/share/vm/utilities/exceptions.cpp Wed Oct 20 17:07:25 2010 -0700
@@ -61,6 +61,18 @@
ShouldNotReachHere();
}
+#ifdef ASSERT
+ // Check for trying to throw stack overflow before initialization is complete
+ // to prevent infinite recursion trying to initialize stack overflow without
+ // adequate stack space.
+ // This can happen with stress testing a large value of StackShadowPages
+ if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) {
+ instanceKlass* ik = instanceKlass::cast(h_exception->klass());
+ assert(ik->is_initialized(),
+ "need to increase min_stack_allowed calculation");
+ }
+#endif // ASSERT
+
if (thread->is_VM_thread()
|| thread->is_Compiler_thread() ) {
// We do not care what kind of exception we get for the vm-thread or a thread which
@@ -91,7 +103,6 @@
thread->set_pending_exception(Universe::vm_exception(), file, line);
return true;
}
-
return false;
}
@@ -193,6 +204,7 @@
klassOop k = SystemDictionary::StackOverflowError_klass();
oop e = instanceKlass::cast(k)->allocate_instance(CHECK);
exception = Handle(THREAD, e); // fill_in_stack trace does gc
+ assert(instanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation");
if (StackTraceInThrowable) {
java_lang_Throwable::fill_in_stack_trace(exception);
}