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src/share/vm/gc_implementation/shenandoah/shenandoahAsserts.cpp
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rev 10658 : [backport] Single marking bitmap
rev 10669 : [backport] Clean up dead code
rev 10715 : [backport] Cleanup up superfluous newlines
rev 10724 : [backport] Add JFR parallel and concurrent events (infrastructure)
rev 10764 : [backport] Rename BrooksPointer to ShenandoahBrooksPointer
rev 10772 : [backport] Update copyrights
@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2018, Red Hat, Inc. and/or its affiliates.
+ * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
@@ -21,28 +21,27 @@
*
*/
#include "precompiled.hpp"
-#include "gc_implementation/shenandoah/brooksPointer.hpp"
#include "gc_implementation/shenandoah/shenandoahAsserts.hpp"
+#include "gc_implementation/shenandoah/shenandoahBrooksPointer.hpp"
#include "gc_implementation/shenandoah/shenandoahHeap.hpp"
#include "gc_implementation/shenandoah/shenandoahHeap.inline.hpp"
#include "gc_implementation/shenandoah/shenandoahMarkingContext.inline.hpp"
+#include "gc_implementation/shenandoah/shenandoahUtils.hpp"
#include "memory/resourceArea.hpp"
-
void print_raw_memory(ShenandoahMessageBuffer &msg, void* loc) {
// Be extra safe. Only access data that is guaranteed to be safe:
// should be in heap, in known committed region, within that region.
ShenandoahHeap* heap = ShenandoahHeap::heap();
if (!heap->is_in(loc)) return;
ShenandoahHeapRegion* r = heap->heap_region_containing(loc);
if (r != NULL && r->is_committed()) {
-
address start = MAX2((address) r->bottom(), (address) loc - 32);
address end = MIN2((address) r->end(), (address) loc + 128);
if (start >= end) return;
stringStream ss;
@@ -58,18 +57,15 @@
ResourceMark rm;
stringStream ss;
r->print_on(&ss);
- ShenandoahMarkingContext* const next_ctx = heap->next_marking_context();
- ShenandoahMarkingContext* const compl_ctx = heap->complete_marking_context();
+ ShenandoahMarkingContext* const ctx = heap->marking_context();
msg.append(" " PTR_FORMAT " - klass " PTR_FORMAT " %s\n", p2i(obj), p2i(obj->klass()), obj->klass()->external_name());
- msg.append(" %3s allocated after complete mark start\n", compl_ctx->allocated_after_mark_start((HeapWord *) obj) ? "" : "not");
- msg.append(" %3s allocated after next mark start\n", next_ctx->allocated_after_mark_start((HeapWord *) obj) ? "" : "not");
- msg.append(" %3s marked complete\n", compl_ctx->is_marked(obj) ? "" : "not");
- msg.append(" %3s marked next\n", next_ctx->is_marked(obj) ? "" : "not");
+ msg.append(" %3s allocated after mark start\n", ctx->allocated_after_mark_start((HeapWord *) obj) ? "" : "not");
+ msg.append(" %3s marked \n", ctx->is_marked(obj) ? "" : "not");
msg.append(" %3s in collection set\n", heap->in_collection_set(obj) ? "" : "not");
msg.append(" region: %s", ss.as_string());
}
void ShenandoahAsserts::print_non_obj(ShenandoahMessageBuffer& msg, void* loc) {
@@ -134,11 +130,11 @@
print_obj_safe(msg, obj);
}
msg.append("\n");
if (level >= _safe_oop) {
- oop fwd = (oop) BrooksPointer::get_raw_unchecked(obj);
+ oop fwd = (oop) ShenandoahBrooksPointer::get_raw_unchecked(obj);
msg.append("Forwardee:\n");
if (!oopDesc::unsafe_equals(obj, fwd)) {
if (level >= _safe_oop_fwd) {
print_obj(msg, fwd);
} else {
@@ -149,12 +145,12 @@
}
msg.append("\n");
}
if (level >= _safe_oop_fwd) {
- oop fwd = (oop) BrooksPointer::get_raw_unchecked(obj);
- oop fwd2 = (oop) BrooksPointer::get_raw_unchecked(fwd);
+ oop fwd = (oop) ShenandoahBrooksPointer::get_raw_unchecked(obj);
+ oop fwd2 = (oop) ShenandoahBrooksPointer::get_raw_unchecked(fwd);
if (!oopDesc::unsafe_equals(fwd, fwd2)) {
msg.append("Second forwardee:\n");
print_obj_safe(msg, fwd2);
msg.append("\n");
}
@@ -195,14 +191,13 @@
print_failure(_safe_unknown, obj, interior_loc, NULL, "Shenandoah assert_correct failed",
"Object klass pointer must go to metaspace",
file,line);
}
- oop fwd = oop(BrooksPointer::get_raw_unchecked(obj));
+ oop fwd = oop(ShenandoahBrooksPointer::get_raw_unchecked(obj));
if (!oopDesc::unsafe_equals(obj, fwd)) {
-
// When Full GC moves the objects, we cannot trust fwdptrs. If we got here, it means something
// tries fwdptr manipulation when Full GC is running. The only exception is using the fwdptr
// that still points to the object itself.
if (heap->is_full_gc_move_in_progress()) {
print_failure(_safe_oop, obj, interior_loc, NULL, "Shenandoah assert_correct failed",
@@ -229,11 +224,11 @@
"Non-trivial forwardee should in another region",
file, line);
}
// Step 4. Check for multiple forwardings
- oop fwd2 = oop(BrooksPointer::get_raw_unchecked(fwd));
+ oop fwd2 = oop(ShenandoahBrooksPointer::get_raw_unchecked(fwd));
if (!oopDesc::unsafe_equals(fwd, fwd2)) {
print_failure(_safe_all, obj, interior_loc, NULL, "Shenandoah assert_correct failed",
"Multiple forwardings",
file, line);
}
@@ -249,11 +244,11 @@
print_failure(_safe_unknown, obj, interior_loc, NULL, "Shenandoah assert_in_correct_region failed",
"Object must reside in active region",
file, line);
}
- size_t alloc_size = obj->size() + BrooksPointer::word_size();
+ size_t alloc_size = obj->size() + ShenandoahBrooksPointer::word_size();
if (alloc_size > ShenandoahHeapRegion::humongous_threshold_words()) {
size_t idx = r->region_number();
size_t num_regions = ShenandoahHeapRegion::required_regions(alloc_size * HeapWordSize);
for (size_t i = idx; i < idx + num_regions; i++) {
ShenandoahHeapRegion* chain_reg = heap->get_region(i);
@@ -271,48 +266,37 @@
}
}
void ShenandoahAsserts::assert_forwarded(void* interior_loc, oop obj, const char* file, int line) {
assert_correct(interior_loc, obj, file, line);
- oop fwd = oop(BrooksPointer::get_raw_unchecked(obj));
+ oop fwd = oop(ShenandoahBrooksPointer::get_raw_unchecked(obj));
if (oopDesc::unsafe_equals(obj, fwd)) {
print_failure(_safe_all, obj, interior_loc, NULL, "Shenandoah assert_forwarded failed",
"Object should be forwarded",
file, line);
}
}
void ShenandoahAsserts::assert_not_forwarded(void* interior_loc, oop obj, const char* file, int line) {
assert_correct(interior_loc, obj, file, line);
- oop fwd = oop(BrooksPointer::get_raw_unchecked(obj));
+ oop fwd = oop(ShenandoahBrooksPointer::get_raw_unchecked(obj));
if (!oopDesc::unsafe_equals(obj, fwd)) {
print_failure(_safe_all, obj, interior_loc, NULL, "Shenandoah assert_not_forwarded failed",
"Object should not be forwarded",
file, line);
}
}
-void ShenandoahAsserts::assert_marked_complete(void* interior_loc, oop obj, const char* file, int line) {
+void ShenandoahAsserts::assert_marked(void *interior_loc, oop obj, const char *file, int line) {
assert_correct(interior_loc, obj, file, line);
ShenandoahHeap* heap = ShenandoahHeap::heap_no_check();
- if (!heap->complete_marking_context()->is_marked(obj)) {
- print_failure(_safe_all, obj, interior_loc, NULL, "Shenandoah assert_marked_complete failed",
- "Object should be marked (complete)",
- file, line);
- }
-}
-
-void ShenandoahAsserts::assert_marked_next(void* interior_loc, oop obj, const char* file, int line) {
- assert_correct(interior_loc, obj, file, line);
-
- ShenandoahHeap* heap = ShenandoahHeap::heap_no_check();
- if (!heap->next_marking_context()->is_marked(obj)) {
- print_failure(_safe_all, obj, interior_loc, NULL, "Shenandoah assert_marked_next failed",
- "Object should be marked (next)",
+ if (!heap->marking_context()->is_marked(obj)) {
+ print_failure(_safe_all, obj, interior_loc, NULL, "Shenandoah assert_marked failed",
+ "Object should be marked",
file, line);
}
}
void ShenandoahAsserts::assert_in_cset(void* interior_loc, oop obj, const char* file, int line) {
@@ -346,11 +330,10 @@
}
}
void ShenandoahAsserts::print_rp_failure(const char *label, BoolObjectClosure* actual,
const char *file, int line) {
- ShenandoahHeap* heap = ShenandoahHeap::heap();
ShenandoahMessageBuffer msg("%s\n", label);
msg.append(" Actual: " PTR_FORMAT "\n", p2i(actual));
report_vm_error(file, line, msg.buffer());
}
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