--- a/hotspot/src/share/vm/memory/metaspace.cpp Wed Aug 14 15:12:00 2013 -0700
+++ b/hotspot/src/share/vm/memory/metaspace.cpp Thu Aug 15 20:04:10 2013 -0400
@@ -35,6 +35,7 @@
#include "memory/resourceArea.hpp"
#include "memory/universe.hpp"
#include "runtime/globals.hpp"
+#include "runtime/java.hpp"
#include "runtime/mutex.hpp"
#include "runtime/orderAccess.hpp"
#include "services/memTracker.hpp"
@@ -54,6 +55,8 @@
MetaWord* last_allocated = 0;
+size_t Metaspace::_class_metaspace_size;
+
// Used in declarations in SpaceManager and ChunkManager
enum ChunkIndex {
ZeroIndex = 0,
@@ -261,10 +264,6 @@
// count of chunks contained in this VirtualSpace
uintx _container_count;
- // Convenience functions for logical bottom and end
- MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); }
- MetaWord* end() const { return (MetaWord*) _virtual_space.high(); }
-
// Convenience functions to access the _virtual_space
char* low() const { return virtual_space()->low(); }
char* high() const { return virtual_space()->high(); }
@@ -284,6 +283,10 @@
VirtualSpaceNode(ReservedSpace rs) : _top(NULL), _next(NULL), _rs(rs), _container_count(0) {}
~VirtualSpaceNode();
+ // Convenience functions for logical bottom and end
+ MetaWord* bottom() const { return (MetaWord*) _virtual_space.low(); }
+ MetaWord* end() const { return (MetaWord*) _virtual_space.high(); }
+
// address of next available space in _virtual_space;
// Accessors
VirtualSpaceNode* next() { return _next; }
@@ -1313,7 +1316,8 @@
// Class virtual space should always be expanded. Call GC for the other
// metadata virtual space.
- if (vsl == Metaspace::class_space_list()) return true;
+ if (Metaspace::using_class_space() &&
+ (vsl == Metaspace::class_space_list())) return true;
// If this is part of an allocation after a GC, expand
// unconditionally.
@@ -2257,7 +2261,7 @@
size_t raw_word_size = get_raw_word_size(word_size);
size_t min_size = TreeChunk<Metablock, FreeList>::min_size();
assert(raw_word_size >= min_size,
- err_msg("Should not deallocate dark matter " SIZE_FORMAT, word_size));
+ err_msg("Should not deallocate dark matter " SIZE_FORMAT "<" SIZE_FORMAT, word_size, min_size));
block_freelists()->return_block(p, raw_word_size);
}
@@ -2374,7 +2378,7 @@
if (result == NULL) {
result = grow_and_allocate(word_size);
}
- if (result > 0) {
+ if (result != 0) {
inc_used_metrics(word_size);
assert(result != (MetaWord*) chunks_in_use(MediumIndex),
"Head of the list is being allocated");
@@ -2478,7 +2482,8 @@
size_t MetaspaceAux::free_bytes() {
size_t result = 0;
- if (Metaspace::class_space_list() != NULL) {
+ if (Metaspace::using_class_space() &&
+ (Metaspace::class_space_list() != NULL)) {
result = result + Metaspace::class_space_list()->free_bytes();
}
if (Metaspace::space_list() != NULL) {
@@ -2549,6 +2554,9 @@
}
size_t MetaspaceAux::capacity_bytes_slow(Metaspace::MetadataType mdtype) {
+ if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) {
+ return 0;
+ }
// Don't count the space in the freelists. That space will be
// added to the capacity calculation as needed.
size_t capacity = 0;
@@ -2563,18 +2571,23 @@
}
size_t MetaspaceAux::reserved_in_bytes(Metaspace::MetadataType mdtype) {
- size_t reserved = (mdtype == Metaspace::ClassType) ?
- Metaspace::class_space_list()->virtual_space_total() :
- Metaspace::space_list()->virtual_space_total();
- return reserved * BytesPerWord;
+ if (mdtype == Metaspace::ClassType) {
+ return Metaspace::using_class_space() ?
+ Metaspace::class_space_list()->virtual_space_total() * BytesPerWord : 0;
+ } else {
+ return Metaspace::space_list()->virtual_space_total() * BytesPerWord;
+ }
}
size_t MetaspaceAux::min_chunk_size() { return Metaspace::first_chunk_word_size(); }
size_t MetaspaceAux::free_chunks_total(Metaspace::MetadataType mdtype) {
+ if ((mdtype == Metaspace::ClassType) && !Metaspace::using_class_space()) {
+ return 0;
+ }
ChunkManager* chunk = (mdtype == Metaspace::ClassType) ?
- Metaspace::class_space_list()->chunk_manager() :
- Metaspace::space_list()->chunk_manager();
+ Metaspace::class_space_list()->chunk_manager() :
+ Metaspace::space_list()->chunk_manager();
chunk->slow_verify();
return chunk->free_chunks_total();
}
@@ -2615,7 +2628,6 @@
// This is printed when PrintGCDetails
void MetaspaceAux::print_on(outputStream* out) {
- Metaspace::MetadataType ct = Metaspace::ClassType;
Metaspace::MetadataType nct = Metaspace::NonClassType;
out->print_cr(" Metaspace total "
@@ -2629,12 +2641,15 @@
allocated_capacity_bytes(nct)/K,
allocated_used_bytes(nct)/K,
reserved_in_bytes(nct)/K);
- out->print_cr(" class space "
- SIZE_FORMAT "K, used " SIZE_FORMAT "K,"
- " reserved " SIZE_FORMAT "K",
- allocated_capacity_bytes(ct)/K,
- allocated_used_bytes(ct)/K,
- reserved_in_bytes(ct)/K);
+ if (Metaspace::using_class_space()) {
+ Metaspace::MetadataType ct = Metaspace::ClassType;
+ out->print_cr(" class space "
+ SIZE_FORMAT "K, used " SIZE_FORMAT "K,"
+ " reserved " SIZE_FORMAT "K",
+ allocated_capacity_bytes(ct)/K,
+ allocated_used_bytes(ct)/K,
+ reserved_in_bytes(ct)/K);
+ }
}
// Print information for class space and data space separately.
@@ -2659,13 +2674,37 @@
assert(!SafepointSynchronize::is_at_safepoint() || used_and_free == capacity_bytes, "Accounting is wrong");
}
-// Print total fragmentation for class and data metaspaces separately
+// Print total fragmentation for class metaspaces
+void MetaspaceAux::print_class_waste(outputStream* out) {
+ assert(Metaspace::using_class_space(), "class metaspace not used");
+ size_t cls_specialized_waste = 0, cls_small_waste = 0, cls_medium_waste = 0;
+ size_t cls_specialized_count = 0, cls_small_count = 0, cls_medium_count = 0, cls_humongous_count = 0;
+ ClassLoaderDataGraphMetaspaceIterator iter;
+ while (iter.repeat()) {
+ Metaspace* msp = iter.get_next();
+ if (msp != NULL) {
+ cls_specialized_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SpecializedIndex);
+ cls_specialized_count += msp->class_vsm()->sum_count_in_chunks_in_use(SpecializedIndex);
+ cls_small_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SmallIndex);
+ cls_small_count += msp->class_vsm()->sum_count_in_chunks_in_use(SmallIndex);
+ cls_medium_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(MediumIndex);
+ cls_medium_count += msp->class_vsm()->sum_count_in_chunks_in_use(MediumIndex);
+ cls_humongous_count += msp->class_vsm()->sum_count_in_chunks_in_use(HumongousIndex);
+ }
+ }
+ out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", "
+ SIZE_FORMAT " small(s) " SIZE_FORMAT ", "
+ SIZE_FORMAT " medium(s) " SIZE_FORMAT ", "
+ "large count " SIZE_FORMAT,
+ cls_specialized_count, cls_specialized_waste,
+ cls_small_count, cls_small_waste,
+ cls_medium_count, cls_medium_waste, cls_humongous_count);
+}
+
+// Print total fragmentation for data and class metaspaces separately
void MetaspaceAux::print_waste(outputStream* out) {
-
size_t specialized_waste = 0, small_waste = 0, medium_waste = 0;
size_t specialized_count = 0, small_count = 0, medium_count = 0, humongous_count = 0;
- size_t cls_specialized_waste = 0, cls_small_waste = 0, cls_medium_waste = 0;
- size_t cls_specialized_count = 0, cls_small_count = 0, cls_medium_count = 0, cls_humongous_count = 0;
ClassLoaderDataGraphMetaspaceIterator iter;
while (iter.repeat()) {
@@ -2678,14 +2717,6 @@
medium_waste += msp->vsm()->sum_waste_in_chunks_in_use(MediumIndex);
medium_count += msp->vsm()->sum_count_in_chunks_in_use(MediumIndex);
humongous_count += msp->vsm()->sum_count_in_chunks_in_use(HumongousIndex);
-
- cls_specialized_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SpecializedIndex);
- cls_specialized_count += msp->class_vsm()->sum_count_in_chunks_in_use(SpecializedIndex);
- cls_small_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(SmallIndex);
- cls_small_count += msp->class_vsm()->sum_count_in_chunks_in_use(SmallIndex);
- cls_medium_waste += msp->class_vsm()->sum_waste_in_chunks_in_use(MediumIndex);
- cls_medium_count += msp->class_vsm()->sum_count_in_chunks_in_use(MediumIndex);
- cls_humongous_count += msp->class_vsm()->sum_count_in_chunks_in_use(HumongousIndex);
}
}
out->print_cr("Total fragmentation waste (words) doesn't count free space");
@@ -2695,13 +2726,9 @@
"large count " SIZE_FORMAT,
specialized_count, specialized_waste, small_count,
small_waste, medium_count, medium_waste, humongous_count);
- out->print_cr(" class: " SIZE_FORMAT " specialized(s) " SIZE_FORMAT ", "
- SIZE_FORMAT " small(s) " SIZE_FORMAT ", "
- SIZE_FORMAT " medium(s) " SIZE_FORMAT ", "
- "large count " SIZE_FORMAT,
- cls_specialized_count, cls_specialized_waste,
- cls_small_count, cls_small_waste,
- cls_medium_count, cls_medium_waste, cls_humongous_count);
+ if (Metaspace::using_class_space()) {
+ print_class_waste(out);
+ }
}
// Dump global metaspace things from the end of ClassLoaderDataGraph
@@ -2714,7 +2741,9 @@
void MetaspaceAux::verify_free_chunks() {
Metaspace::space_list()->chunk_manager()->verify();
- Metaspace::class_space_list()->chunk_manager()->verify();
+ if (Metaspace::using_class_space()) {
+ Metaspace::class_space_list()->chunk_manager()->verify();
+ }
}
void MetaspaceAux::verify_capacity() {
@@ -2776,7 +2805,9 @@
Metaspace::~Metaspace() {
delete _vsm;
- delete _class_vsm;
+ if (using_class_space()) {
+ delete _class_vsm;
+ }
}
VirtualSpaceList* Metaspace::_space_list = NULL;
@@ -2784,9 +2815,123 @@
#define VIRTUALSPACEMULTIPLIER 2
+#ifdef _LP64
+void Metaspace::set_narrow_klass_base_and_shift(address metaspace_base, address cds_base) {
+ // Figure out the narrow_klass_base and the narrow_klass_shift. The
+ // narrow_klass_base is the lower of the metaspace base and the cds base
+ // (if cds is enabled). The narrow_klass_shift depends on the distance
+ // between the lower base and higher address.
+ address lower_base;
+ address higher_address;
+ if (UseSharedSpaces) {
+ higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()),
+ (address)(metaspace_base + class_metaspace_size()));
+ lower_base = MIN2(metaspace_base, cds_base);
+ } else {
+ higher_address = metaspace_base + class_metaspace_size();
+ lower_base = metaspace_base;
+ }
+ Universe::set_narrow_klass_base(lower_base);
+ if ((uint64_t)(higher_address - lower_base) < (uint64_t)max_juint) {
+ Universe::set_narrow_klass_shift(0);
+ } else {
+ assert(!UseSharedSpaces, "Cannot shift with UseSharedSpaces");
+ Universe::set_narrow_klass_shift(LogKlassAlignmentInBytes);
+ }
+}
+
+// Return TRUE if the specified metaspace_base and cds_base are close enough
+// to work with compressed klass pointers.
+bool Metaspace::can_use_cds_with_metaspace_addr(char* metaspace_base, address cds_base) {
+ assert(cds_base != 0 && UseSharedSpaces, "Only use with CDS");
+ assert(UseCompressedKlassPointers, "Only use with CompressedKlassPtrs");
+ address lower_base = MIN2((address)metaspace_base, cds_base);
+ address higher_address = MAX2((address)(cds_base + FileMapInfo::shared_spaces_size()),
+ (address)(metaspace_base + class_metaspace_size()));
+ return ((uint64_t)(higher_address - lower_base) < (uint64_t)max_juint);
+}
+
+// Try to allocate the metaspace at the requested addr.
+void Metaspace::allocate_metaspace_compressed_klass_ptrs(char* requested_addr, address cds_base) {
+ assert(using_class_space(), "called improperly");
+ assert(UseCompressedKlassPointers, "Only use with CompressedKlassPtrs");
+ assert(class_metaspace_size() < KlassEncodingMetaspaceMax,
+ "Metaspace size is too big");
+
+ ReservedSpace metaspace_rs = ReservedSpace(class_metaspace_size(),
+ os::vm_allocation_granularity(),
+ false, requested_addr, 0);
+ if (!metaspace_rs.is_reserved()) {
+ if (UseSharedSpaces) {
+ // Keep trying to allocate the metaspace, increasing the requested_addr
+ // by 1GB each time, until we reach an address that will no longer allow
+ // use of CDS with compressed klass pointers.
+ char *addr = requested_addr;
+ while (!metaspace_rs.is_reserved() && (addr + 1*G > addr) &&
+ can_use_cds_with_metaspace_addr(addr + 1*G, cds_base)) {
+ addr = addr + 1*G;
+ metaspace_rs = ReservedSpace(class_metaspace_size(),
+ os::vm_allocation_granularity(), false, addr, 0);
+ }
+ }
+
+ // If no successful allocation then try to allocate the space anywhere. If
+ // that fails then OOM doom. At this point we cannot try allocating the
+ // metaspace as if UseCompressedKlassPointers is off because too much
+ // initialization has happened that depends on UseCompressedKlassPointers.
+ // So, UseCompressedKlassPointers cannot be turned off at this point.
+ if (!metaspace_rs.is_reserved()) {
+ metaspace_rs = ReservedSpace(class_metaspace_size(),
+ os::vm_allocation_granularity(), false);
+ if (!metaspace_rs.is_reserved()) {
+ vm_exit_during_initialization(err_msg("Could not allocate metaspace: %d bytes",
+ class_metaspace_size()));
+ }
+ }
+ }
+
+ // If we got here then the metaspace got allocated.
+ MemTracker::record_virtual_memory_type((address)metaspace_rs.base(), mtClass);
+
+ // Verify that we can use shared spaces. Otherwise, turn off CDS.
+ if (UseSharedSpaces && !can_use_cds_with_metaspace_addr(metaspace_rs.base(), cds_base)) {
+ FileMapInfo::stop_sharing_and_unmap(
+ "Could not allocate metaspace at a compatible address");
+ }
+
+ set_narrow_klass_base_and_shift((address)metaspace_rs.base(),
+ UseSharedSpaces ? (address)cds_base : 0);
+
+ initialize_class_space(metaspace_rs);
+
+ if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) {
+ gclog_or_tty->print_cr("Narrow klass base: " PTR_FORMAT ", Narrow klass shift: " SIZE_FORMAT,
+ Universe::narrow_klass_base(), Universe::narrow_klass_shift());
+ gclog_or_tty->print_cr("Metaspace Size: " SIZE_FORMAT " Address: " PTR_FORMAT " Req Addr: " PTR_FORMAT,
+ class_metaspace_size(), metaspace_rs.base(), requested_addr);
+ }
+}
+
+// For UseCompressedKlassPointers the class space is reserved above the top of
+// the Java heap. The argument passed in is at the base of the compressed space.
+void Metaspace::initialize_class_space(ReservedSpace rs) {
+ // The reserved space size may be bigger because of alignment, esp with UseLargePages
+ assert(rs.size() >= ClassMetaspaceSize,
+ err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), ClassMetaspaceSize));
+ assert(using_class_space(), "Must be using class space");
+ _class_space_list = new VirtualSpaceList(rs);
+}
+
+#endif
+
void Metaspace::global_initialize() {
// Initialize the alignment for shared spaces.
int max_alignment = os::vm_page_size();
+ size_t cds_total = 0;
+
+ set_class_metaspace_size(align_size_up(ClassMetaspaceSize,
+ os::vm_allocation_granularity()));
+
MetaspaceShared::set_max_alignment(max_alignment);
if (DumpSharedSpaces) {
@@ -2798,15 +2943,31 @@
// Initialize with the sum of the shared space sizes. The read-only
// and read write metaspace chunks will be allocated out of this and the
// remainder is the misc code and data chunks.
- size_t total = align_size_up(SharedReadOnlySize + SharedReadWriteSize +
- SharedMiscDataSize + SharedMiscCodeSize,
- os::vm_allocation_granularity());
- size_t word_size = total/wordSize;
- _space_list = new VirtualSpaceList(word_size);
+ cds_total = FileMapInfo::shared_spaces_size();
+ _space_list = new VirtualSpaceList(cds_total/wordSize);
+
+#ifdef _LP64
+ // Set the compressed klass pointer base so that decoding of these pointers works
+ // properly when creating the shared archive.
+ assert(UseCompressedOops && UseCompressedKlassPointers,
+ "UseCompressedOops and UseCompressedKlassPointers must be set");
+ Universe::set_narrow_klass_base((address)_space_list->current_virtual_space()->bottom());
+ if (TraceMetavirtualspaceAllocation && Verbose) {
+ gclog_or_tty->print_cr("Setting_narrow_klass_base to Address: " PTR_FORMAT,
+ _space_list->current_virtual_space()->bottom());
+ }
+
+ // Set the shift to zero.
+ assert(class_metaspace_size() < (uint64_t)(max_juint) - cds_total,
+ "CDS region is too large");
+ Universe::set_narrow_klass_shift(0);
+#endif
+
} else {
// If using shared space, open the file that contains the shared space
// and map in the memory before initializing the rest of metaspace (so
// the addresses don't conflict)
+ address cds_address = NULL;
if (UseSharedSpaces) {
FileMapInfo* mapinfo = new FileMapInfo();
memset(mapinfo, 0, sizeof(FileMapInfo));
@@ -2821,8 +2982,22 @@
assert(!mapinfo->is_open() && !UseSharedSpaces,
"archive file not closed or shared spaces not disabled.");
}
+ cds_total = FileMapInfo::shared_spaces_size();
+ cds_address = (address)mapinfo->region_base(0);
}
+#ifdef _LP64
+ // If UseCompressedKlassPointers is set then allocate the metaspace area
+ // above the heap and above the CDS area (if it exists).
+ if (using_class_space()) {
+ if (UseSharedSpaces) {
+ allocate_metaspace_compressed_klass_ptrs((char *)(cds_address + cds_total), cds_address);
+ } else {
+ allocate_metaspace_compressed_klass_ptrs((char *)CompressedKlassPointersBase, 0);
+ }
+ }
+#endif
+
// Initialize these before initializing the VirtualSpaceList
_first_chunk_word_size = InitialBootClassLoaderMetaspaceSize / BytesPerWord;
_first_chunk_word_size = align_word_size_up(_first_chunk_word_size);
@@ -2840,39 +3015,28 @@
}
}
-// For UseCompressedKlassPointers the class space is reserved as a piece of the
-// Java heap because the compression algorithm is the same for each. The
-// argument passed in is at the top of the compressed space
-void Metaspace::initialize_class_space(ReservedSpace rs) {
- // The reserved space size may be bigger because of alignment, esp with UseLargePages
- assert(rs.size() >= ClassMetaspaceSize,
- err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), ClassMetaspaceSize));
- _class_space_list = new VirtualSpaceList(rs);
-}
-
-void Metaspace::initialize(Mutex* lock,
- MetaspaceType type) {
+void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
assert(space_list() != NULL,
"Metadata VirtualSpaceList has not been initialized");
- _vsm = new SpaceManager(Metaspace::NonClassType, lock, space_list());
+ _vsm = new SpaceManager(NonClassType, lock, space_list());
if (_vsm == NULL) {
return;
}
size_t word_size;
size_t class_word_size;
- vsm()->get_initial_chunk_sizes(type,
- &word_size,
- &class_word_size);
-
- assert(class_space_list() != NULL,
- "Class VirtualSpaceList has not been initialized");
-
- // Allocate SpaceManager for classes.
- _class_vsm = new SpaceManager(Metaspace::ClassType, lock, class_space_list());
- if (_class_vsm == NULL) {
- return;
+ vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size);
+
+ if (using_class_space()) {
+ assert(class_space_list() != NULL,
+ "Class VirtualSpaceList has not been initialized");
+
+ // Allocate SpaceManager for classes.
+ _class_vsm = new SpaceManager(ClassType, lock, class_space_list());
+ if (_class_vsm == NULL) {
+ return;
+ }
}
MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
@@ -2888,11 +3052,13 @@
}
// Allocate chunk for class metadata objects
- Metachunk* class_chunk =
- class_space_list()->get_initialization_chunk(class_word_size,
- class_vsm()->medium_chunk_bunch());
- if (class_chunk != NULL) {
- class_vsm()->add_chunk(class_chunk, true);
+ if (using_class_space()) {
+ Metachunk* class_chunk =
+ class_space_list()->get_initialization_chunk(class_word_size,
+ class_vsm()->medium_chunk_bunch());
+ if (class_chunk != NULL) {
+ class_vsm()->add_chunk(class_chunk, true);
+ }
}
_alloc_record_head = NULL;
@@ -2906,7 +3072,8 @@
MetaWord* Metaspace::allocate(size_t word_size, MetadataType mdtype) {
// DumpSharedSpaces doesn't use class metadata area (yet)
- if (mdtype == ClassType && !DumpSharedSpaces) {
+ // Also, don't use class_vsm() unless UseCompressedKlassPointers is true.
+ if (mdtype == ClassType && using_class_space()) {
return class_vsm()->allocate(word_size);
} else {
return vsm()->allocate(word_size);
@@ -2937,14 +3104,19 @@
}
size_t Metaspace::used_words_slow(MetadataType mdtype) const {
- // return vsm()->allocated_used_words();
- return mdtype == ClassType ? class_vsm()->sum_used_in_chunks_in_use() :
- vsm()->sum_used_in_chunks_in_use(); // includes overhead!
+ if (mdtype == ClassType) {
+ return using_class_space() ? class_vsm()->sum_used_in_chunks_in_use() : 0;
+ } else {
+ return vsm()->sum_used_in_chunks_in_use(); // includes overhead!
+ }
}
size_t Metaspace::free_words(MetadataType mdtype) const {
- return mdtype == ClassType ? class_vsm()->sum_free_in_chunks_in_use() :
- vsm()->sum_free_in_chunks_in_use();
+ if (mdtype == ClassType) {
+ return using_class_space() ? class_vsm()->sum_free_in_chunks_in_use() : 0;
+ } else {
+ return vsm()->sum_free_in_chunks_in_use();
+ }
}
// Space capacity in the Metaspace. It includes
@@ -2953,8 +3125,11 @@
// in the space available in the dictionary which
// is already counted in some chunk.
size_t Metaspace::capacity_words_slow(MetadataType mdtype) const {
- return mdtype == ClassType ? class_vsm()->sum_capacity_in_chunks_in_use() :
- vsm()->sum_capacity_in_chunks_in_use();
+ if (mdtype == ClassType) {
+ return using_class_space() ? class_vsm()->sum_capacity_in_chunks_in_use() : 0;
+ } else {
+ return vsm()->sum_capacity_in_chunks_in_use();
+ }
}
size_t Metaspace::used_bytes_slow(MetadataType mdtype) const {
@@ -2977,8 +3152,8 @@
#endif
return;
}
- if (is_class) {
- class_vsm()->deallocate(ptr, word_size);
+ if (is_class && using_class_space()) {
+ class_vsm()->deallocate(ptr, word_size);
} else {
vsm()->deallocate(ptr, word_size);
}
@@ -2992,7 +3167,7 @@
#endif
return;
}
- if (is_class) {
+ if (is_class && using_class_space()) {
class_vsm()->deallocate(ptr, word_size);
} else {
vsm()->deallocate(ptr, word_size);
@@ -3101,14 +3276,18 @@
MutexLockerEx cl(SpaceManager::expand_lock(),
Mutex::_no_safepoint_check_flag);
space_list()->purge();
- class_space_list()->purge();
+ if (using_class_space()) {
+ class_space_list()->purge();
+ }
}
void Metaspace::print_on(outputStream* out) const {
// Print both class virtual space counts and metaspace.
if (Verbose) {
- vsm()->print_on(out);
+ vsm()->print_on(out);
+ if (using_class_space()) {
class_vsm()->print_on(out);
+ }
}
}
@@ -3122,17 +3301,21 @@
// be needed. Note, locking this can cause inversion problems with the
// caller in MetaspaceObj::is_metadata() function.
return space_list()->contains(ptr) ||
- class_space_list()->contains(ptr);
+ (using_class_space() && class_space_list()->contains(ptr));
}
void Metaspace::verify() {
vsm()->verify();
- class_vsm()->verify();
+ if (using_class_space()) {
+ class_vsm()->verify();
+ }
}
void Metaspace::dump(outputStream* const out) const {
out->print_cr("\nVirtual space manager: " INTPTR_FORMAT, vsm());
vsm()->dump(out);
- out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm());
- class_vsm()->dump(out);
+ if (using_class_space()) {
+ out->print_cr("\nClass space manager: " INTPTR_FORMAT, class_vsm());
+ class_vsm()->dump(out);
+ }
}