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6964458: Reimplement class meta-data storage to use native memory

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Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com>
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
This commit is contained in:
Jon Masamitsu 2012-09-01 13:25:18 -04:00 • committed by Coleen Phillimore
parent 36eee7c8c8
commit 5c58d27aac
853 changed files with 26124 additions and 82956 deletions
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25
hotspot/src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2007, 2012, 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
@ -54,27 +54,6 @@ void VM_ParallelGCFailedAllocation::doit() {
}
}
VM_ParallelGCFailedPermanentAllocation::VM_ParallelGCFailedPermanentAllocation(size_t size,
unsigned int gc_count, unsigned int full_gc_count) :
VM_GC_Operation(gc_count, GCCause::_allocation_failure, full_gc_count, true /* full */),
_size(size),
_result(NULL)
{
}
void VM_ParallelGCFailedPermanentAllocation::doit() {
SvcGCMarker sgcm(SvcGCMarker::FULL);
ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "must be a ParallelScavengeHeap");
GCCauseSetter gccs(heap, _gc_cause);
_result = heap->failed_permanent_mem_allocate(_size);
if (_result == NULL && GC_locker::is_active_and_needs_gc()) {
set_gc_locked();
}
}
// Only used for System.gc() calls
VM_ParallelGCSystemGC::VM_ParallelGCSystemGC(unsigned int gc_count,
unsigned int full_gc_count,
@ -96,6 +75,6 @@ void VM_ParallelGCSystemGC::doit() {
// If (and only if) the scavenge fails, this will invoke a full gc.
heap->invoke_scavenge();
} else {
heap->invoke_full_gc(false);
heap->do_full_collection(false);
}
}