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8078644: CDS needs to support JVMTI CFLH

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Support posting CLFH for shared classes. Tests are contributed by Misha Seledtsov.

Reviewed-by: iklam, coleenp, acorn, dcubed, sspitsyn
This commit is contained in:
Jiangli Zhou 2016-09-18 21:10:48 -04:00
parent 38eb4a4f6f
commit eb52950704
28 changed files with 1256 additions and 68 deletions
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25
hotspot/src/share/vm/memory/filemap.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2016, 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
@ -252,10 +252,27 @@ public:
bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false);
void print_shared_spaces() NOT_CDS_RETURN;
// The ro+rw+md+mc spaces size
static size_t core_spaces_size() {
return align_size_up((SharedReadOnlySize + SharedReadWriteSize +
SharedMiscDataSize + SharedMiscCodeSize),
os::vm_allocation_granularity());
}
// The estimated optional space size.
//
// Currently the optional space only has archived class bytes.
// The core_spaces_size is the size of all class metadata, which is a good
// estimate of the total class bytes to be archived. Only the portion
// containing data is written out to the archive and mapped at runtime.
// There is no memory waste due to unused portion in optional space.
static size_t optional_space_size() {
return core_spaces_size();
}
// Total shared_spaces size includes the ro, rw, md, mc and od spaces
static size_t shared_spaces_size() {
return align_size_up(SharedReadOnlySize + SharedReadWriteSize +
SharedMiscDataSize + SharedMiscCodeSize,
os::vm_allocation_granularity());
return core_spaces_size() + optional_space_size();
}
// Stop CDS sharing and unmap CDS regions.