author | stefank |
Thu, 12 Sep 2013 10:15:54 +0200 | |
changeset 19989 | 0fc247fb59bc |
parent 19546 | f6b7c9e96ea3 |
child 19993 | b1d392324718 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "oops/markOop.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/virtualspace.hpp" |
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#include "services/memTracker.hpp" |
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#ifdef TARGET_OS_FAMILY_linux |
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# include "os_linux.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_solaris |
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# include "os_solaris.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_windows |
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# include "os_windows.inline.hpp" |
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#endif |
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#ifdef TARGET_OS_FAMILY_bsd |
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# include "os_bsd.inline.hpp" |
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#endif |
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// ReservedSpace |
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// Dummy constructor |
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ReservedSpace::ReservedSpace() : _base(NULL), _size(0), _noaccess_prefix(0), |
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_alignment(0), _special(false), _executable(false) { |
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} |
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ReservedSpace::ReservedSpace(size_t size) { |
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size_t page_size = os::page_size_for_region(size, size, 1); |
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bool large_pages = page_size != (size_t)os::vm_page_size(); |
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// Don't force the alignment to be large page aligned, |
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// since that will waste memory. |
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size_t alignment = os::vm_allocation_granularity(); |
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initialize(size, alignment, large_pages, NULL, 0, false); |
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} |
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ReservedSpace::ReservedSpace(size_t size, size_t alignment, |
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bool large, |
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char* requested_address, |
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const size_t noaccess_prefix) { |
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initialize(size+noaccess_prefix, alignment, large, requested_address, |
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noaccess_prefix, false); |
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} |
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ReservedSpace::ReservedSpace(size_t size, size_t alignment, |
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bool large, |
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bool executable) { |
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initialize(size, alignment, large, NULL, 0, executable); |
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} |
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// Helper method. |
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static bool failed_to_reserve_as_requested(char* base, char* requested_address, |
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const size_t size, bool special) |
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{ |
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if (base == requested_address || requested_address == NULL) |
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return false; // did not fail |
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if (base != NULL) { |
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// Different reserve address may be acceptable in other cases |
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// but for compressed oops heap should be at requested address. |
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assert(UseCompressedOops, "currently requested address used only for compressed oops"); |
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if (PrintCompressedOopsMode) { |
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tty->cr(); |
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tty->print_cr("Reserved memory not at requested address: " PTR_FORMAT " vs " PTR_FORMAT, base, requested_address); |
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} |
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// OS ignored requested address. Try different address. |
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if (special) { |
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if (!os::release_memory_special(base, size)) { |
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fatal("os::release_memory_special failed"); |
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} |
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} else { |
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if (!os::release_memory(base, size)) { |
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fatal("os::release_memory failed"); |
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} |
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} |
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} |
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return true; |
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} |
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void ReservedSpace::initialize(size_t size, size_t alignment, bool large, |
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char* requested_address, |
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const size_t noaccess_prefix, |
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bool executable) { |
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const size_t granularity = os::vm_allocation_granularity(); |
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assert((size & (granularity - 1)) == 0, |
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"size not aligned to os::vm_allocation_granularity()"); |
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assert((alignment & (granularity - 1)) == 0, |
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"alignment not aligned to os::vm_allocation_granularity()"); |
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assert(alignment == 0 || is_power_of_2((intptr_t)alignment), |
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"not a power of 2"); |
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alignment = MAX2(alignment, (size_t)os::vm_page_size()); |
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// Assert that if noaccess_prefix is used, it is the same as alignment. |
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assert(noaccess_prefix == 0 || |
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noaccess_prefix == alignment, "noaccess prefix wrong"); |
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_base = NULL; |
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_size = 0; |
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_special = false; |
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_executable = executable; |
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_alignment = 0; |
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_noaccess_prefix = 0; |
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if (size == 0) { |
128 |
return; |
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} |
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// If OS doesn't support demand paging for large page memory, we need |
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// to use reserve_memory_special() to reserve and pin the entire region. |
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bool special = large && !os::can_commit_large_page_memory(); |
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char* base = NULL; |
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if (requested_address != 0) { |
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requested_address -= noaccess_prefix; // adjust requested address |
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assert(requested_address != NULL, "huge noaccess prefix?"); |
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} |
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if (special) { |
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base = os::reserve_memory_special(size, alignment, requested_address, executable); |
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if (base != NULL) { |
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if (failed_to_reserve_as_requested(base, requested_address, size, true)) { |
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// OS ignored requested address. Try different address. |
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return; |
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} |
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// Check alignment constraints. |
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assert((uintptr_t) base % alignment == 0, |
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err_msg("Large pages returned a non-aligned address, base: " |
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PTR_FORMAT " alignment: " PTR_FORMAT, |
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base, (void*)(uintptr_t)alignment)); |
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_special = true; |
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} else { |
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// failed; try to reserve regular memory below |
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if (UseLargePages && (!FLAG_IS_DEFAULT(UseLargePages) || |
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!FLAG_IS_DEFAULT(LargePageSizeInBytes))) { |
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if (PrintCompressedOopsMode) { |
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tty->cr(); |
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tty->print_cr("Reserve regular memory without large pages."); |
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} |
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} |
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1 | 165 |
} |
166 |
} |
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if (base == NULL) { |
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// Optimistically assume that the OSes returns an aligned base pointer. |
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// When reserving a large address range, most OSes seem to align to at |
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// least 64K. |
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173 |
// If the memory was requested at a particular address, use |
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// os::attempt_reserve_memory_at() to avoid over mapping something |
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// important. If available space is not detected, return NULL. |
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177 |
if (requested_address != 0) { |
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base = os::attempt_reserve_memory_at(size, requested_address); |
179 |
if (failed_to_reserve_as_requested(base, requested_address, size, false)) { |
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180 |
// OS ignored requested address. Try different address. |
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base = NULL; |
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182 |
} |
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1 | 183 |
} else { |
184 |
base = os::reserve_memory(size, NULL, alignment); |
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185 |
} |
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186 |
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187 |
if (base == NULL) return; |
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// Check alignment constraints |
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if ((((size_t)base + noaccess_prefix) & (alignment - 1)) != 0) { |
1 | 191 |
// Base not aligned, retry |
192 |
if (!os::release_memory(base, size)) fatal("os::release_memory failed"); |
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// Make sure that size is aligned |
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size = align_size_up(size, alignment); |
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base = os::reserve_memory_aligned(size, alignment); |
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if (requested_address != 0 && |
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failed_to_reserve_as_requested(base, requested_address, size, false)) { |
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// As a result of the alignment constraints, the allocated base differs |
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// from the requested address. Return back to the caller who can |
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// take remedial action (like try again without a requested address). |
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assert(_base == NULL, "should be"); |
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return; |
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204 |
} |
1 | 205 |
} |
206 |
} |
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207 |
// Done |
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208 |
_base = base; |
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_size = size; |
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_alignment = alignment; |
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_noaccess_prefix = noaccess_prefix; |
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// Assert that if noaccess_prefix is used, it is the same as alignment. |
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assert(noaccess_prefix == 0 || |
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noaccess_prefix == _alignment, "noaccess prefix wrong"); |
1 | 216 |
|
217 |
assert(markOopDesc::encode_pointer_as_mark(_base)->decode_pointer() == _base, |
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218 |
"area must be distinguisable from marks for mark-sweep"); |
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219 |
assert(markOopDesc::encode_pointer_as_mark(&_base[size])->decode_pointer() == &_base[size], |
|
220 |
"area must be distinguisable from marks for mark-sweep"); |
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221 |
} |
|
222 |
||
223 |
||
224 |
ReservedSpace::ReservedSpace(char* base, size_t size, size_t alignment, |
|
2268 | 225 |
bool special, bool executable) { |
1 | 226 |
assert((size % os::vm_allocation_granularity()) == 0, |
227 |
"size not allocation aligned"); |
|
228 |
_base = base; |
|
229 |
_size = size; |
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230 |
_alignment = alignment; |
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_noaccess_prefix = 0; |
1 | 232 |
_special = special; |
2268 | 233 |
_executable = executable; |
1 | 234 |
} |
235 |
||
236 |
||
237 |
ReservedSpace ReservedSpace::first_part(size_t partition_size, size_t alignment, |
|
238 |
bool split, bool realloc) { |
|
239 |
assert(partition_size <= size(), "partition failed"); |
|
240 |
if (split) { |
|
2268 | 241 |
os::split_reserved_memory(base(), size(), partition_size, realloc); |
1 | 242 |
} |
2268 | 243 |
ReservedSpace result(base(), partition_size, alignment, special(), |
244 |
executable()); |
|
1 | 245 |
return result; |
246 |
} |
|
247 |
||
248 |
||
249 |
ReservedSpace |
|
250 |
ReservedSpace::last_part(size_t partition_size, size_t alignment) { |
|
251 |
assert(partition_size <= size(), "partition failed"); |
|
252 |
ReservedSpace result(base() + partition_size, size() - partition_size, |
|
2268 | 253 |
alignment, special(), executable()); |
1 | 254 |
return result; |
255 |
} |
|
256 |
||
257 |
||
258 |
size_t ReservedSpace::page_align_size_up(size_t size) { |
|
259 |
return align_size_up(size, os::vm_page_size()); |
|
260 |
} |
|
261 |
||
262 |
||
263 |
size_t ReservedSpace::page_align_size_down(size_t size) { |
|
264 |
return align_size_down(size, os::vm_page_size()); |
|
265 |
} |
|
266 |
||
267 |
||
268 |
size_t ReservedSpace::allocation_align_size_up(size_t size) { |
|
269 |
return align_size_up(size, os::vm_allocation_granularity()); |
|
270 |
} |
|
271 |
||
272 |
||
273 |
size_t ReservedSpace::allocation_align_size_down(size_t size) { |
|
274 |
return align_size_down(size, os::vm_allocation_granularity()); |
|
275 |
} |
|
276 |
||
277 |
||
278 |
void ReservedSpace::release() { |
|
279 |
if (is_reserved()) { |
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char *real_base = _base - _noaccess_prefix; |
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const size_t real_size = _size + _noaccess_prefix; |
1 | 282 |
if (special()) { |
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283 |
os::release_memory_special(real_base, real_size); |
1 | 284 |
} else{ |
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285 |
os::release_memory(real_base, real_size); |
1 | 286 |
} |
287 |
_base = NULL; |
|
288 |
_size = 0; |
|
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289 |
_noaccess_prefix = 0; |
1 | 290 |
_special = false; |
2268 | 291 |
_executable = false; |
1 | 292 |
} |
293 |
} |
|
294 |
||
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295 |
void ReservedSpace::protect_noaccess_prefix(const size_t size) { |
5898 | 296 |
assert( (_noaccess_prefix != 0) == (UseCompressedOops && _base != NULL && |
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297 |
(Universe::narrow_oop_base() != NULL) && |
5898 | 298 |
Universe::narrow_oop_use_implicit_null_checks()), |
299 |
"noaccess_prefix should be used only with non zero based compressed oops"); |
|
300 |
||
301 |
// If there is no noaccess prefix, return. |
|
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302 |
if (_noaccess_prefix == 0) return; |
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303 |
|
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304 |
assert(_noaccess_prefix >= (size_t)os::vm_page_size(), |
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|
305 |
"must be at least page size big"); |
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306 |
|
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307 |
// Protect memory at the base of the allocated region. |
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308 |
// If special, the page was committed (only matters on windows) |
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|
309 |
if (!os::protect_memory(_base, _noaccess_prefix, os::MEM_PROT_NONE, |
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|
310 |
_special)) { |
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|
311 |
fatal("cannot protect protection page"); |
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|
312 |
} |
5898 | 313 |
if (PrintCompressedOopsMode) { |
314 |
tty->cr(); |
|
315 |
tty->print_cr("Protected page at the reserved heap base: " PTR_FORMAT " / " INTX_FORMAT " bytes", _base, _noaccess_prefix); |
|
316 |
} |
|
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|
317 |
|
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|
318 |
_base += _noaccess_prefix; |
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|
319 |
_size -= _noaccess_prefix; |
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|
320 |
assert((size == _size) && ((uintptr_t)_base % _alignment == 0), |
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|
321 |
"must be exactly of required size and alignment"); |
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322 |
} |
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|
323 |
|
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|
324 |
ReservedHeapSpace::ReservedHeapSpace(size_t size, size_t alignment, |
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325 |
bool large, char* requested_address) : |
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|
326 |
ReservedSpace(size, alignment, large, |
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|
327 |
requested_address, |
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328 |
(UseCompressedOops && (Universe::narrow_oop_base() != NULL) && |
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329 |
Universe::narrow_oop_use_implicit_null_checks()) ? |
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|
330 |
lcm(os::vm_page_size(), alignment) : 0) { |
13195 | 331 |
if (base() > 0) { |
332 |
MemTracker::record_virtual_memory_type((address)base(), mtJavaHeap); |
|
333 |
} |
|
334 |
||
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|
335 |
// Only reserved space for the java heap should have a noaccess_prefix |
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|
336 |
// if using compressed oops. |
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|
337 |
protect_noaccess_prefix(size); |
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|
338 |
} |
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|
339 |
|
2268 | 340 |
// Reserve space for code segment. Same as Java heap only we mark this as |
341 |
// executable. |
|
342 |
ReservedCodeSpace::ReservedCodeSpace(size_t r_size, |
|
343 |
size_t rs_align, |
|
344 |
bool large) : |
|
345 |
ReservedSpace(r_size, rs_align, large, /*executable*/ true) { |
|
13195 | 346 |
MemTracker::record_virtual_memory_type((address)base(), mtCode); |
2268 | 347 |
} |
348 |
||
1 | 349 |
// VirtualSpace |
350 |
||
351 |
VirtualSpace::VirtualSpace() { |
|
352 |
_low_boundary = NULL; |
|
353 |
_high_boundary = NULL; |
|
354 |
_low = NULL; |
|
355 |
_high = NULL; |
|
356 |
_lower_high = NULL; |
|
357 |
_middle_high = NULL; |
|
358 |
_upper_high = NULL; |
|
359 |
_lower_high_boundary = NULL; |
|
360 |
_middle_high_boundary = NULL; |
|
361 |
_upper_high_boundary = NULL; |
|
362 |
_lower_alignment = 0; |
|
363 |
_middle_alignment = 0; |
|
364 |
_upper_alignment = 0; |
|
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|
365 |
_special = false; |
2268 | 366 |
_executable = false; |
1 | 367 |
} |
368 |
||
369 |
||
370 |
bool VirtualSpace::initialize(ReservedSpace rs, size_t committed_size) { |
|
371 |
if(!rs.is_reserved()) return false; // allocation failed. |
|
372 |
assert(_low_boundary == NULL, "VirtualSpace already initialized"); |
|
373 |
_low_boundary = rs.base(); |
|
374 |
_high_boundary = low_boundary() + rs.size(); |
|
375 |
||
376 |
_low = low_boundary(); |
|
377 |
_high = low(); |
|
378 |
||
379 |
_special = rs.special(); |
|
2268 | 380 |
_executable = rs.executable(); |
1 | 381 |
|
382 |
// When a VirtualSpace begins life at a large size, make all future expansion |
|
383 |
// and shrinking occur aligned to a granularity of large pages. This avoids |
|
384 |
// fragmentation of physical addresses that inhibits the use of large pages |
|
385 |
// by the OS virtual memory system. Empirically, we see that with a 4MB |
|
386 |
// page size, the only spaces that get handled this way are codecache and |
|
387 |
// the heap itself, both of which provide a substantial performance |
|
388 |
// boost in many benchmarks when covered by large pages. |
|
389 |
// |
|
390 |
// No attempt is made to force large page alignment at the very top and |
|
391 |
// bottom of the space if they are not aligned so already. |
|
392 |
_lower_alignment = os::vm_page_size(); |
|
393 |
_middle_alignment = os::page_size_for_region(rs.size(), rs.size(), 1); |
|
394 |
_upper_alignment = os::vm_page_size(); |
|
395 |
||
396 |
// End of each region |
|
397 |
_lower_high_boundary = (char*) round_to((intptr_t) low_boundary(), middle_alignment()); |
|
398 |
_middle_high_boundary = (char*) round_down((intptr_t) high_boundary(), middle_alignment()); |
|
399 |
_upper_high_boundary = high_boundary(); |
|
400 |
||
401 |
// High address of each region |
|
402 |
_lower_high = low_boundary(); |
|
403 |
_middle_high = lower_high_boundary(); |
|
404 |
_upper_high = middle_high_boundary(); |
|
405 |
||
406 |
// commit to initial size |
|
407 |
if (committed_size > 0) { |
|
408 |
if (!expand_by(committed_size)) { |
|
409 |
return false; |
|
410 |
} |
|
411 |
} |
|
412 |
return true; |
|
413 |
} |
|
414 |
||
415 |
||
416 |
VirtualSpace::~VirtualSpace() { |
|
417 |
release(); |
|
418 |
} |
|
419 |
||
420 |
||
421 |
void VirtualSpace::release() { |
|
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|
422 |
// This does not release memory it never reserved. |
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|
423 |
// Caller must release via rs.release(); |
1 | 424 |
_low_boundary = NULL; |
425 |
_high_boundary = NULL; |
|
426 |
_low = NULL; |
|
427 |
_high = NULL; |
|
428 |
_lower_high = NULL; |
|
429 |
_middle_high = NULL; |
|
430 |
_upper_high = NULL; |
|
431 |
_lower_high_boundary = NULL; |
|
432 |
_middle_high_boundary = NULL; |
|
433 |
_upper_high_boundary = NULL; |
|
434 |
_lower_alignment = 0; |
|
435 |
_middle_alignment = 0; |
|
436 |
_upper_alignment = 0; |
|
437 |
_special = false; |
|
2268 | 438 |
_executable = false; |
1 | 439 |
} |
440 |
||
441 |
||
442 |
size_t VirtualSpace::committed_size() const { |
|
443 |
return pointer_delta(high(), low(), sizeof(char)); |
|
444 |
} |
|
445 |
||
446 |
||
447 |
size_t VirtualSpace::reserved_size() const { |
|
448 |
return pointer_delta(high_boundary(), low_boundary(), sizeof(char)); |
|
449 |
} |
|
450 |
||
451 |
||
452 |
size_t VirtualSpace::uncommitted_size() const { |
|
453 |
return reserved_size() - committed_size(); |
|
454 |
} |
|
455 |
||
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|
456 |
size_t VirtualSpace::actual_committed_size() const { |
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|
457 |
// Special VirtualSpaces commit all reserved space up front. |
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|
458 |
if (special()) { |
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|
459 |
return reserved_size(); |
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|
460 |
} |
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|
461 |
|
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|
462 |
size_t committed_low = pointer_delta(_lower_high, _low_boundary, sizeof(char)); |
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|
463 |
size_t committed_middle = pointer_delta(_middle_high, _lower_high_boundary, sizeof(char)); |
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|
464 |
size_t committed_high = pointer_delta(_upper_high, _middle_high_boundary, sizeof(char)); |
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|
465 |
|
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|
466 |
#ifdef ASSERT |
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|
467 |
size_t lower = pointer_delta(_lower_high_boundary, _low_boundary, sizeof(char)); |
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|
468 |
size_t middle = pointer_delta(_middle_high_boundary, _lower_high_boundary, sizeof(char)); |
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|
469 |
size_t upper = pointer_delta(_upper_high_boundary, _middle_high_boundary, sizeof(char)); |
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|
470 |
|
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|
471 |
if (committed_high > 0) { |
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|
472 |
assert(committed_low == lower, "Must be"); |
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|
473 |
assert(committed_middle == middle, "Must be"); |
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|
474 |
} |
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|
475 |
|
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|
476 |
if (committed_middle > 0) { |
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|
477 |
assert(committed_low == lower, "Must be"); |
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|
478 |
} |
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|
479 |
if (committed_middle < middle) { |
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|
480 |
assert(committed_high == 0, "Must be"); |
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|
481 |
} |
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|
482 |
|
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|
483 |
if (committed_low < lower) { |
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|
484 |
assert(committed_high == 0, "Must be"); |
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|
485 |
assert(committed_middle == 0, "Must be"); |
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|
486 |
} |
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|
487 |
#endif |
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changeset
|
488 |
|
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|
489 |
return committed_low + committed_middle + committed_high; |
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|
490 |
} |
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|
491 |
|
1 | 492 |
|
493 |
bool VirtualSpace::contains(const void* p) const { |
|
494 |
return low() <= (const char*) p && (const char*) p < high(); |
|
495 |
} |
|
496 |
||
497 |
/* |
|
498 |
First we need to determine if a particular virtual space is using large |
|
499 |
pages. This is done at the initialize function and only virtual spaces |
|
500 |
that are larger than LargePageSizeInBytes use large pages. Once we |
|
501 |
have determined this, all expand_by and shrink_by calls must grow and |
|
502 |
shrink by large page size chunks. If a particular request |
|
503 |
is within the current large page, the call to commit and uncommit memory |
|
504 |
can be ignored. In the case that the low and high boundaries of this |
|
505 |
space is not large page aligned, the pages leading to the first large |
|
506 |
page address and the pages after the last large page address must be |
|
507 |
allocated with default pages. |
|
508 |
*/ |
|
509 |
bool VirtualSpace::expand_by(size_t bytes, bool pre_touch) { |
|
510 |
if (uncommitted_size() < bytes) return false; |
|
511 |
||
512 |
if (special()) { |
|
513 |
// don't commit memory if the entire space is pinned in memory |
|
514 |
_high += bytes; |
|
515 |
return true; |
|
516 |
} |
|
517 |
||
518 |
char* previous_high = high(); |
|
519 |
char* unaligned_new_high = high() + bytes; |
|
520 |
assert(unaligned_new_high <= high_boundary(), |
|
521 |
"cannot expand by more than upper boundary"); |
|
522 |
||
523 |
// Calculate where the new high for each of the regions should be. If |
|
524 |
// the low_boundary() and high_boundary() are LargePageSizeInBytes aligned |
|
525 |
// then the unaligned lower and upper new highs would be the |
|
526 |
// lower_high() and upper_high() respectively. |
|
527 |
char* unaligned_lower_new_high = |
|
528 |
MIN2(unaligned_new_high, lower_high_boundary()); |
|
529 |
char* unaligned_middle_new_high = |
|
530 |
MIN2(unaligned_new_high, middle_high_boundary()); |
|
531 |
char* unaligned_upper_new_high = |
|
532 |
MIN2(unaligned_new_high, upper_high_boundary()); |
|
533 |
||
534 |
// Align the new highs based on the regions alignment. lower and upper |
|
535 |
// alignment will always be default page size. middle alignment will be |
|
536 |
// LargePageSizeInBytes if the actual size of the virtual space is in |
|
537 |
// fact larger than LargePageSizeInBytes. |
|
538 |
char* aligned_lower_new_high = |
|
539 |
(char*) round_to((intptr_t) unaligned_lower_new_high, lower_alignment()); |
|
540 |
char* aligned_middle_new_high = |
|
541 |
(char*) round_to((intptr_t) unaligned_middle_new_high, middle_alignment()); |
|
542 |
char* aligned_upper_new_high = |
|
543 |
(char*) round_to((intptr_t) unaligned_upper_new_high, upper_alignment()); |
|
544 |
||
545 |
// Determine which regions need to grow in this expand_by call. |
|
546 |
// If you are growing in the lower region, high() must be in that |
|
547 |
// region so calcuate the size based on high(). For the middle and |
|
548 |
// upper regions, determine the starting point of growth based on the |
|
549 |
// location of high(). By getting the MAX of the region's low address |
|
550 |
// (or the prevoius region's high address) and high(), we can tell if it |
|
551 |
// is an intra or inter region growth. |
|
552 |
size_t lower_needs = 0; |
|
553 |
if (aligned_lower_new_high > lower_high()) { |
|
554 |
lower_needs = |
|
555 |
pointer_delta(aligned_lower_new_high, lower_high(), sizeof(char)); |
|
556 |
} |
|
557 |
size_t middle_needs = 0; |
|
558 |
if (aligned_middle_new_high > middle_high()) { |
|
559 |
middle_needs = |
|
560 |
pointer_delta(aligned_middle_new_high, middle_high(), sizeof(char)); |
|
561 |
} |
|
562 |
size_t upper_needs = 0; |
|
563 |
if (aligned_upper_new_high > upper_high()) { |
|
564 |
upper_needs = |
|
565 |
pointer_delta(aligned_upper_new_high, upper_high(), sizeof(char)); |
|
566 |
} |
|
567 |
||
568 |
// Check contiguity. |
|
569 |
assert(low_boundary() <= lower_high() && |
|
570 |
lower_high() <= lower_high_boundary(), |
|
571 |
"high address must be contained within the region"); |
|
572 |
assert(lower_high_boundary() <= middle_high() && |
|
573 |
middle_high() <= middle_high_boundary(), |
|
574 |
"high address must be contained within the region"); |
|
575 |
assert(middle_high_boundary() <= upper_high() && |
|
576 |
upper_high() <= upper_high_boundary(), |
|
577 |
"high address must be contained within the region"); |
|
578 |
||
579 |
// Commit regions |
|
580 |
if (lower_needs > 0) { |
|
581 |
assert(low_boundary() <= lower_high() && |
|
582 |
lower_high() + lower_needs <= lower_high_boundary(), |
|
583 |
"must not expand beyond region"); |
|
2268 | 584 |
if (!os::commit_memory(lower_high(), lower_needs, _executable)) { |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
585 |
debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
586 |
", lower_needs=" SIZE_FORMAT ", %d) failed", |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
587 |
lower_high(), lower_needs, _executable);) |
1 | 588 |
return false; |
589 |
} else { |
|
590 |
_lower_high += lower_needs; |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
591 |
} |
1 | 592 |
} |
593 |
if (middle_needs > 0) { |
|
594 |
assert(lower_high_boundary() <= middle_high() && |
|
595 |
middle_high() + middle_needs <= middle_high_boundary(), |
|
596 |
"must not expand beyond region"); |
|
2268 | 597 |
if (!os::commit_memory(middle_high(), middle_needs, middle_alignment(), |
598 |
_executable)) { |
|
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
599 |
debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
600 |
", middle_needs=" SIZE_FORMAT ", " SIZE_FORMAT |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
601 |
", %d) failed", middle_high(), middle_needs, |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
602 |
middle_alignment(), _executable);) |
1 | 603 |
return false; |
604 |
} |
|
605 |
_middle_high += middle_needs; |
|
606 |
} |
|
607 |
if (upper_needs > 0) { |
|
608 |
assert(middle_high_boundary() <= upper_high() && |
|
609 |
upper_high() + upper_needs <= upper_high_boundary(), |
|
610 |
"must not expand beyond region"); |
|
2268 | 611 |
if (!os::commit_memory(upper_high(), upper_needs, _executable)) { |
18069
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
612 |
debug_only(warning("INFO: os::commit_memory(" PTR_FORMAT |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
613 |
", upper_needs=" SIZE_FORMAT ", %d) failed", |
e6d4971c8650
8013057: assert(_needs_gc || SafepointSynchronize::is_at_safepoint()) failed: only read at safepoint
dcubed
parents:
17113
diff
changeset
|
614 |
upper_high(), upper_needs, _executable);) |
1 | 615 |
return false; |
616 |
} else { |
|
617 |
_upper_high += upper_needs; |
|
618 |
} |
|
619 |
} |
|
620 |
||
621 |
if (pre_touch || AlwaysPreTouch) { |
|
622 |
int vm_ps = os::vm_page_size(); |
|
623 |
for (char* curr = previous_high; |
|
624 |
curr < unaligned_new_high; |
|
625 |
curr += vm_ps) { |
|
626 |
// Note the use of a write here; originally we tried just a read, but |
|
627 |
// since the value read was unused, the optimizer removed the read. |
|
628 |
// If we ever have a concurrent touchahead thread, we'll want to use |
|
629 |
// a read, to avoid the potential of overwriting data (if a mutator |
|
630 |
// thread beats the touchahead thread to a page). There are various |
|
631 |
// ways of making sure this read is not optimized away: for example, |
|
632 |
// generating the code for a read procedure at runtime. |
|
633 |
*curr = 0; |
|
634 |
} |
|
635 |
} |
|
636 |
||
637 |
_high += bytes; |
|
638 |
return true; |
|
639 |
} |
|
640 |
||
641 |
// A page is uncommitted if the contents of the entire page is deemed unusable. |
|
642 |
// Continue to decrement the high() pointer until it reaches a page boundary |
|
643 |
// in which case that particular page can now be uncommitted. |
|
644 |
void VirtualSpace::shrink_by(size_t size) { |
|
645 |
if (committed_size() < size) |
|
646 |
fatal("Cannot shrink virtual space to negative size"); |
|
647 |
||
648 |
if (special()) { |
|
649 |
// don't uncommit if the entire space is pinned in memory |
|
650 |
_high -= size; |
|
651 |
return; |
|
652 |
} |
|
653 |
||
654 |
char* unaligned_new_high = high() - size; |
|
655 |
assert(unaligned_new_high >= low_boundary(), "cannot shrink past lower boundary"); |
|
656 |
||
657 |
// Calculate new unaligned address |
|
658 |
char* unaligned_upper_new_high = |
|
659 |
MAX2(unaligned_new_high, middle_high_boundary()); |
|
660 |
char* unaligned_middle_new_high = |
|
661 |
MAX2(unaligned_new_high, lower_high_boundary()); |
|
662 |
char* unaligned_lower_new_high = |
|
663 |
MAX2(unaligned_new_high, low_boundary()); |
|
664 |
||
665 |
// Align address to region's alignment |
|
666 |
char* aligned_upper_new_high = |
|
667 |
(char*) round_to((intptr_t) unaligned_upper_new_high, upper_alignment()); |
|
668 |
char* aligned_middle_new_high = |
|
669 |
(char*) round_to((intptr_t) unaligned_middle_new_high, middle_alignment()); |
|
670 |
char* aligned_lower_new_high = |
|
671 |
(char*) round_to((intptr_t) unaligned_lower_new_high, lower_alignment()); |
|
672 |
||
673 |
// Determine which regions need to shrink |
|
674 |
size_t upper_needs = 0; |
|
675 |
if (aligned_upper_new_high < upper_high()) { |
|
676 |
upper_needs = |
|
677 |
pointer_delta(upper_high(), aligned_upper_new_high, sizeof(char)); |
|
678 |
} |
|
679 |
size_t middle_needs = 0; |
|
680 |
if (aligned_middle_new_high < middle_high()) { |
|
681 |
middle_needs = |
|
682 |
pointer_delta(middle_high(), aligned_middle_new_high, sizeof(char)); |
|
683 |
} |
|
684 |
size_t lower_needs = 0; |
|
685 |
if (aligned_lower_new_high < lower_high()) { |
|
686 |
lower_needs = |
|
687 |
pointer_delta(lower_high(), aligned_lower_new_high, sizeof(char)); |
|
688 |
} |
|
689 |
||
690 |
// Check contiguity. |
|
691 |
assert(middle_high_boundary() <= upper_high() && |
|
692 |
upper_high() <= upper_high_boundary(), |
|
693 |
"high address must be contained within the region"); |
|
694 |
assert(lower_high_boundary() <= middle_high() && |
|
695 |
middle_high() <= middle_high_boundary(), |
|
696 |
"high address must be contained within the region"); |
|
697 |
assert(low_boundary() <= lower_high() && |
|
698 |
lower_high() <= lower_high_boundary(), |
|
699 |
"high address must be contained within the region"); |
|
700 |
||
701 |
// Uncommit |
|
702 |
if (upper_needs > 0) { |
|
703 |
assert(middle_high_boundary() <= aligned_upper_new_high && |
|
704 |
aligned_upper_new_high + upper_needs <= upper_high_boundary(), |
|
705 |
"must not shrink beyond region"); |
|
706 |
if (!os::uncommit_memory(aligned_upper_new_high, upper_needs)) { |
|
707 |
debug_only(warning("os::uncommit_memory failed")); |
|
708 |
return; |
|
709 |
} else { |
|
710 |
_upper_high -= upper_needs; |
|
711 |
} |
|
712 |
} |
|
713 |
if (middle_needs > 0) { |
|
714 |
assert(lower_high_boundary() <= aligned_middle_new_high && |
|
715 |
aligned_middle_new_high + middle_needs <= middle_high_boundary(), |
|
716 |
"must not shrink beyond region"); |
|
717 |
if (!os::uncommit_memory(aligned_middle_new_high, middle_needs)) { |
|
718 |
debug_only(warning("os::uncommit_memory failed")); |
|
719 |
return; |
|
720 |
} else { |
|
721 |
_middle_high -= middle_needs; |
|
722 |
} |
|
723 |
} |
|
724 |
if (lower_needs > 0) { |
|
725 |
assert(low_boundary() <= aligned_lower_new_high && |
|
726 |
aligned_lower_new_high + lower_needs <= lower_high_boundary(), |
|
727 |
"must not shrink beyond region"); |
|
728 |
if (!os::uncommit_memory(aligned_lower_new_high, lower_needs)) { |
|
729 |
debug_only(warning("os::uncommit_memory failed")); |
|
730 |
return; |
|
731 |
} else { |
|
732 |
_lower_high -= lower_needs; |
|
733 |
} |
|
734 |
} |
|
735 |
||
736 |
_high -= size; |
|
737 |
} |
|
738 |
||
739 |
#ifndef PRODUCT |
|
740 |
void VirtualSpace::check_for_contiguity() { |
|
741 |
// Check contiguity. |
|
742 |
assert(low_boundary() <= lower_high() && |
|
743 |
lower_high() <= lower_high_boundary(), |
|
744 |
"high address must be contained within the region"); |
|
745 |
assert(lower_high_boundary() <= middle_high() && |
|
746 |
middle_high() <= middle_high_boundary(), |
|
747 |
"high address must be contained within the region"); |
|
748 |
assert(middle_high_boundary() <= upper_high() && |
|
749 |
upper_high() <= upper_high_boundary(), |
|
750 |
"high address must be contained within the region"); |
|
751 |
assert(low() >= low_boundary(), "low"); |
|
752 |
assert(low_boundary() <= lower_high_boundary(), "lower high boundary"); |
|
753 |
assert(upper_high_boundary() <= high_boundary(), "upper high boundary"); |
|
754 |
assert(high() <= upper_high(), "upper high"); |
|
755 |
} |
|
756 |
||
757 |
void VirtualSpace::print() { |
|
758 |
tty->print ("Virtual space:"); |
|
759 |
if (special()) tty->print(" (pinned in memory)"); |
|
760 |
tty->cr(); |
|
15228
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14840
diff
changeset
|
761 |
tty->print_cr(" - committed: " SIZE_FORMAT, committed_size()); |
e92acc84ade3
7102489: RFE: cleanup jlong typedef on __APPLE__and _LLP64 systems.
hseigel
parents:
14840
diff
changeset
|
762 |
tty->print_cr(" - reserved: " SIZE_FORMAT, reserved_size()); |
1 | 763 |
tty->print_cr(" - [low, high]: [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", low(), high()); |
764 |
tty->print_cr(" - [low_b, high_b]: [" INTPTR_FORMAT ", " INTPTR_FORMAT "]", low_boundary(), high_boundary()); |
|
765 |
} |
|
766 |
||
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
767 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
768 |
/////////////// Unit tests /////////////// |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
769 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
770 |
#ifndef PRODUCT |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
771 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
772 |
#define test_log(...) \ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
773 |
do {\ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
774 |
if (VerboseInternalVMTests) { \ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
775 |
tty->print_cr(__VA_ARGS__); \ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
776 |
tty->flush(); \ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
777 |
}\ |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
778 |
} while (false) |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
779 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
780 |
class TestReservedSpace : AllStatic { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
781 |
public: |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
782 |
static void small_page_write(void* addr, size_t size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
783 |
size_t page_size = os::vm_page_size(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
784 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
785 |
char* end = (char*)addr + size; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
786 |
for (char* p = (char*)addr; p < end; p += page_size) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
787 |
*p = 1; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
788 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
789 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
790 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
791 |
static void release_memory_for_test(ReservedSpace rs) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
792 |
if (rs.special()) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
793 |
guarantee(os::release_memory_special(rs.base(), rs.size()), "Shouldn't fail"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
794 |
} else { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
795 |
guarantee(os::release_memory(rs.base(), rs.size()), "Shouldn't fail"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
796 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
797 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
798 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
799 |
static void test_reserved_space1(size_t size, size_t alignment) { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
800 |
test_log("test_reserved_space1(%p)", (void*) (uintptr_t) size); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
801 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
802 |
assert(is_size_aligned(size, alignment), "Incorrect input parameters"); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
803 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
804 |
ReservedSpace rs(size, // size |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
805 |
alignment, // alignment |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
806 |
UseLargePages, // large |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
807 |
NULL, // requested_address |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
18069
diff
changeset
|
808 |
0); // noacces_prefix |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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parents:
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diff
changeset
|
809 |
|
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changeset
|
810 |
test_log(" rs.special() == %d", rs.special()); |
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changeset
|
811 |
|
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changeset
|
812 |
assert(rs.base() != NULL, "Must be"); |
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changeset
|
813 |
assert(rs.size() == size, "Must be"); |
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diff
changeset
|
814 |
|
f6b7c9e96ea3
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diff
changeset
|
815 |
assert(is_ptr_aligned(rs.base(), alignment), "aligned sizes should always give aligned addresses"); |
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changeset
|
816 |
assert(is_size_aligned(rs.size(), alignment), "aligned sizes should always give aligned addresses"); |
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diff
changeset
|
817 |
|
f6b7c9e96ea3
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changeset
|
818 |
if (rs.special()) { |
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changeset
|
819 |
small_page_write(rs.base(), size); |
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changeset
|
820 |
} |
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diff
changeset
|
821 |
|
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changeset
|
822 |
release_memory_for_test(rs); |
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changeset
|
823 |
} |
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diff
changeset
|
824 |
|
f6b7c9e96ea3
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changeset
|
825 |
static void test_reserved_space2(size_t size) { |
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changeset
|
826 |
test_log("test_reserved_space2(%p)", (void*)(uintptr_t)size); |
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diff
changeset
|
827 |
|
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changeset
|
828 |
assert(is_size_aligned(size, os::vm_allocation_granularity()), "Must be at least AG aligned"); |
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changeset
|
829 |
|
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changeset
|
830 |
ReservedSpace rs(size); |
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changeset
|
831 |
|
f6b7c9e96ea3
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diff
changeset
|
832 |
test_log(" rs.special() == %d", rs.special()); |
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changeset
|
833 |
|
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changeset
|
834 |
assert(rs.base() != NULL, "Must be"); |
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changeset
|
835 |
assert(rs.size() == size, "Must be"); |
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changeset
|
836 |
|
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diff
changeset
|
837 |
if (rs.special()) { |
f6b7c9e96ea3
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changeset
|
838 |
small_page_write(rs.base(), size); |
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changeset
|
839 |
} |
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diff
changeset
|
840 |
|
f6b7c9e96ea3
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diff
changeset
|
841 |
release_memory_for_test(rs); |
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changeset
|
842 |
} |
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diff
changeset
|
843 |
|
f6b7c9e96ea3
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changeset
|
844 |
static void test_reserved_space3(size_t size, size_t alignment, bool maybe_large) { |
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changeset
|
845 |
test_log("test_reserved_space3(%p, %p, %d)", |
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changeset
|
846 |
(void*)(uintptr_t)size, (void*)(uintptr_t)alignment, maybe_large); |
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changeset
|
847 |
|
f6b7c9e96ea3
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changeset
|
848 |
assert(is_size_aligned(size, os::vm_allocation_granularity()), "Must be at least AG aligned"); |
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changeset
|
849 |
assert(is_size_aligned(size, alignment), "Must be at least aligned against alignment"); |
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changeset
|
850 |
|
f6b7c9e96ea3
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changeset
|
851 |
bool large = maybe_large && UseLargePages && size >= os::large_page_size(); |
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changeset
|
852 |
|
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changeset
|
853 |
ReservedSpace rs(size, alignment, large, false); |
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changeset
|
854 |
|
f6b7c9e96ea3
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changeset
|
855 |
test_log(" rs.special() == %d", rs.special()); |
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changeset
|
856 |
|
f6b7c9e96ea3
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diff
changeset
|
857 |
assert(rs.base() != NULL, "Must be"); |
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changeset
|
858 |
assert(rs.size() == size, "Must be"); |
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diff
changeset
|
859 |
|
f6b7c9e96ea3
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diff
changeset
|
860 |
if (rs.special()) { |
f6b7c9e96ea3
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changeset
|
861 |
small_page_write(rs.base(), size); |
f6b7c9e96ea3
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changeset
|
862 |
} |
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diff
changeset
|
863 |
|
f6b7c9e96ea3
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diff
changeset
|
864 |
release_memory_for_test(rs); |
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changeset
|
865 |
} |
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diff
changeset
|
866 |
|
f6b7c9e96ea3
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diff
changeset
|
867 |
|
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changeset
|
868 |
static void test_reserved_space1() { |
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changeset
|
869 |
size_t size = 2 * 1024 * 1024; |
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changeset
|
870 |
size_t ag = os::vm_allocation_granularity(); |
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changeset
|
871 |
|
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changeset
|
872 |
test_reserved_space1(size, ag); |
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changeset
|
873 |
test_reserved_space1(size * 2, ag); |
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changeset
|
874 |
test_reserved_space1(size * 10, ag); |
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changeset
|
875 |
} |
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diff
changeset
|
876 |
|
f6b7c9e96ea3
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changeset
|
877 |
static void test_reserved_space2() { |
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changeset
|
878 |
size_t size = 2 * 1024 * 1024; |
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changeset
|
879 |
size_t ag = os::vm_allocation_granularity(); |
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changeset
|
880 |
|
f6b7c9e96ea3
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changeset
|
881 |
test_reserved_space2(size * 1); |
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changeset
|
882 |
test_reserved_space2(size * 2); |
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changeset
|
883 |
test_reserved_space2(size * 10); |
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changeset
|
884 |
test_reserved_space2(ag); |
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changeset
|
885 |
test_reserved_space2(size - ag); |
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changeset
|
886 |
test_reserved_space2(size); |
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changeset
|
887 |
test_reserved_space2(size + ag); |
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changeset
|
888 |
test_reserved_space2(size * 2); |
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changeset
|
889 |
test_reserved_space2(size * 2 - ag); |
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changeset
|
890 |
test_reserved_space2(size * 2 + ag); |
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changeset
|
891 |
test_reserved_space2(size * 3); |
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changeset
|
892 |
test_reserved_space2(size * 3 - ag); |
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changeset
|
893 |
test_reserved_space2(size * 3 + ag); |
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changeset
|
894 |
test_reserved_space2(size * 10); |
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changeset
|
895 |
test_reserved_space2(size * 10 + size / 2); |
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changeset
|
896 |
} |
f6b7c9e96ea3
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diff
changeset
|
897 |
|
f6b7c9e96ea3
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changeset
|
898 |
static void test_reserved_space3() { |
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changeset
|
899 |
size_t ag = os::vm_allocation_granularity(); |
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changeset
|
900 |
|
f6b7c9e96ea3
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changeset
|
901 |
test_reserved_space3(ag, ag , false); |
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changeset
|
902 |
test_reserved_space3(ag * 2, ag , false); |
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changeset
|
903 |
test_reserved_space3(ag * 3, ag , false); |
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changeset
|
904 |
test_reserved_space3(ag * 2, ag * 2, false); |
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changeset
|
905 |
test_reserved_space3(ag * 4, ag * 2, false); |
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changeset
|
906 |
test_reserved_space3(ag * 8, ag * 2, false); |
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changeset
|
907 |
test_reserved_space3(ag * 4, ag * 4, false); |
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changeset
|
908 |
test_reserved_space3(ag * 8, ag * 4, false); |
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changeset
|
909 |
test_reserved_space3(ag * 16, ag * 4, false); |
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diff
changeset
|
910 |
|
f6b7c9e96ea3
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changeset
|
911 |
if (UseLargePages) { |
f6b7c9e96ea3
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changeset
|
912 |
size_t lp = os::large_page_size(); |
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changeset
|
913 |
|
f6b7c9e96ea3
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changeset
|
914 |
// Without large pages |
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changeset
|
915 |
test_reserved_space3(lp, ag * 4, false); |
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changeset
|
916 |
test_reserved_space3(lp * 2, ag * 4, false); |
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changeset
|
917 |
test_reserved_space3(lp * 4, ag * 4, false); |
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changeset
|
918 |
test_reserved_space3(lp, lp , false); |
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changeset
|
919 |
test_reserved_space3(lp * 2, lp , false); |
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changeset
|
920 |
test_reserved_space3(lp * 3, lp , false); |
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changeset
|
921 |
test_reserved_space3(lp * 2, lp * 2, false); |
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changeset
|
922 |
test_reserved_space3(lp * 4, lp * 2, false); |
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changeset
|
923 |
test_reserved_space3(lp * 8, lp * 2, false); |
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changeset
|
924 |
|
f6b7c9e96ea3
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changeset
|
925 |
// With large pages |
f6b7c9e96ea3
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changeset
|
926 |
test_reserved_space3(lp, ag * 4 , true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
927 |
test_reserved_space3(lp * 2, ag * 4, true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
928 |
test_reserved_space3(lp * 4, ag * 4, true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
929 |
test_reserved_space3(lp, lp , true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
930 |
test_reserved_space3(lp * 2, lp , true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
931 |
test_reserved_space3(lp * 3, lp , true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
932 |
test_reserved_space3(lp * 2, lp * 2, true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
933 |
test_reserved_space3(lp * 4, lp * 2, true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
934 |
test_reserved_space3(lp * 8, lp * 2, true); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
935 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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parents:
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diff
changeset
|
936 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
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diff
changeset
|
937 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
938 |
static void test_reserved_space() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
939 |
test_reserved_space1(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
940 |
test_reserved_space2(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
941 |
test_reserved_space3(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
942 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
943 |
}; |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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parents:
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diff
changeset
|
944 |
|
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
945 |
void TestReservedSpace_test() { |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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changeset
|
946 |
TestReservedSpace::test_reserved_space(); |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
947 |
} |
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
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diff
changeset
|
948 |
|
19989
0fc247fb59bc
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changeset
|
949 |
#define assert_equals(actual, expected) \ |
0fc247fb59bc
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changeset
|
950 |
assert(actual == expected, \ |
0fc247fb59bc
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changeset
|
951 |
err_msg("Got " SIZE_FORMAT " expected " \ |
0fc247fb59bc
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changeset
|
952 |
SIZE_FORMAT, actual, expected)); |
0fc247fb59bc
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changeset
|
953 |
|
0fc247fb59bc
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changeset
|
954 |
#define assert_ge(value1, value2) \ |
0fc247fb59bc
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changeset
|
955 |
assert(value1 >= value2, \ |
0fc247fb59bc
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changeset
|
956 |
err_msg("'" #value1 "': " SIZE_FORMAT " '" \ |
0fc247fb59bc
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diff
changeset
|
957 |
#value2 "': " SIZE_FORMAT, value1, value2)); |
0fc247fb59bc
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diff
changeset
|
958 |
|
0fc247fb59bc
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diff
changeset
|
959 |
#define assert_lt(value1, value2) \ |
0fc247fb59bc
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changeset
|
960 |
assert(value1 < value2, \ |
0fc247fb59bc
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diff
changeset
|
961 |
err_msg("'" #value1 "': " SIZE_FORMAT " '" \ |
0fc247fb59bc
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diff
changeset
|
962 |
#value2 "': " SIZE_FORMAT, value1, value2)); |
0fc247fb59bc
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diff
changeset
|
963 |
|
0fc247fb59bc
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parents:
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diff
changeset
|
964 |
|
0fc247fb59bc
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changeset
|
965 |
class TestVirtualSpace : AllStatic { |
0fc247fb59bc
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changeset
|
966 |
public: |
0fc247fb59bc
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changeset
|
967 |
static void test_virtual_space_actual_committed_space(size_t reserve_size, size_t commit_size) { |
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changeset
|
968 |
size_t granularity = os::vm_allocation_granularity(); |
0fc247fb59bc
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changeset
|
969 |
size_t reserve_size_aligned = align_size_up(reserve_size, granularity); |
0fc247fb59bc
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changeset
|
970 |
|
0fc247fb59bc
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changeset
|
971 |
ReservedSpace reserved(reserve_size_aligned); |
0fc247fb59bc
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changeset
|
972 |
|
0fc247fb59bc
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diff
changeset
|
973 |
assert(reserved.is_reserved(), "Must be"); |
0fc247fb59bc
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diff
changeset
|
974 |
|
0fc247fb59bc
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diff
changeset
|
975 |
VirtualSpace vs; |
0fc247fb59bc
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diff
changeset
|
976 |
bool initialized = vs.initialize(reserved, 0); |
0fc247fb59bc
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changeset
|
977 |
assert(initialized, "Failed to initialize VirtualSpace"); |
0fc247fb59bc
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changeset
|
978 |
|
0fc247fb59bc
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diff
changeset
|
979 |
vs.expand_by(commit_size, false); |
0fc247fb59bc
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diff
changeset
|
980 |
|
0fc247fb59bc
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diff
changeset
|
981 |
if (vs.special()) { |
0fc247fb59bc
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changeset
|
982 |
assert_equals(vs.actual_committed_size(), reserve_size_aligned); |
0fc247fb59bc
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changeset
|
983 |
} else { |
0fc247fb59bc
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diff
changeset
|
984 |
assert_ge(vs.actual_committed_size(), commit_size); |
0fc247fb59bc
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changeset
|
985 |
// Approximate the commit granularity. |
0fc247fb59bc
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changeset
|
986 |
size_t commit_granularity = UseLargePages ? os::large_page_size() : os::vm_page_size(); |
0fc247fb59bc
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diff
changeset
|
987 |
assert_lt(vs.actual_committed_size(), commit_size + commit_granularity); |
0fc247fb59bc
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diff
changeset
|
988 |
} |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
989 |
|
0fc247fb59bc
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parents:
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diff
changeset
|
990 |
reserved.release(); |
0fc247fb59bc
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parents:
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diff
changeset
|
991 |
} |
0fc247fb59bc
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stefank
parents:
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diff
changeset
|
992 |
|
0fc247fb59bc
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diff
changeset
|
993 |
static void test_virtual_space_actual_committed_space_one_large_page() { |
0fc247fb59bc
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diff
changeset
|
994 |
if (!UseLargePages) { |
0fc247fb59bc
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parents:
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diff
changeset
|
995 |
return; |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
996 |
} |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
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diff
changeset
|
997 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
998 |
size_t large_page_size = os::large_page_size(); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
999 |
|
0fc247fb59bc
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diff
changeset
|
1000 |
ReservedSpace reserved(large_page_size, large_page_size, true, false); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1001 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1002 |
assert(reserved.is_reserved(), "Must be"); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1003 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1004 |
VirtualSpace vs; |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1005 |
bool initialized = vs.initialize(reserved, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1006 |
assert(initialized, "Failed to initialize VirtualSpace"); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1007 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1008 |
vs.expand_by(large_page_size, false); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1009 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1010 |
assert_equals(vs.actual_committed_size(), large_page_size); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1011 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1012 |
reserved.release(); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
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diff
changeset
|
1013 |
} |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
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diff
changeset
|
1014 |
|
0fc247fb59bc
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parents:
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diff
changeset
|
1015 |
static void test_virtual_space_actual_committed_space() { |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1016 |
test_virtual_space_actual_committed_space(4 * K, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1017 |
test_virtual_space_actual_committed_space(4 * K, 4 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1018 |
test_virtual_space_actual_committed_space(8 * K, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1019 |
test_virtual_space_actual_committed_space(8 * K, 4 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1020 |
test_virtual_space_actual_committed_space(8 * K, 8 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1021 |
test_virtual_space_actual_committed_space(12 * K, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1022 |
test_virtual_space_actual_committed_space(12 * K, 4 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1023 |
test_virtual_space_actual_committed_space(12 * K, 8 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1024 |
test_virtual_space_actual_committed_space(12 * K, 12 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1025 |
test_virtual_space_actual_committed_space(64 * K, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1026 |
test_virtual_space_actual_committed_space(64 * K, 32 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1027 |
test_virtual_space_actual_committed_space(64 * K, 64 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1028 |
test_virtual_space_actual_committed_space(2 * M, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
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diff
changeset
|
1029 |
test_virtual_space_actual_committed_space(2 * M, 4 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1030 |
test_virtual_space_actual_committed_space(2 * M, 64 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1031 |
test_virtual_space_actual_committed_space(2 * M, 1 * M); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1032 |
test_virtual_space_actual_committed_space(2 * M, 2 * M); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1033 |
test_virtual_space_actual_committed_space(10 * M, 0); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1034 |
test_virtual_space_actual_committed_space(10 * M, 4 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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diff
changeset
|
1035 |
test_virtual_space_actual_committed_space(10 * M, 8 * K); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1036 |
test_virtual_space_actual_committed_space(10 * M, 1 * M); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1037 |
test_virtual_space_actual_committed_space(10 * M, 2 * M); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1038 |
test_virtual_space_actual_committed_space(10 * M, 5 * M); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1039 |
test_virtual_space_actual_committed_space(10 * M, 10 * M); |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1040 |
} |
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
stefank
parents:
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diff
changeset
|
1041 |
|
0fc247fb59bc
8024638: Count and expose the amount of committed memory in the metaspaces
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parents:
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diff
changeset
|
1042 |
static void test_virtual_space() { |
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test_virtual_space_actual_committed_space(); |
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test_virtual_space_actual_committed_space_one_large_page(); |
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} |
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}; |
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|
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void TestVirtualSpace_test() { |
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TestVirtualSpace::test_virtual_space(); |
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} |
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#endif // PRODUCT |
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1 | 1054 |
#endif |