8177708: Convert TestReserveMemorySpecial_test to Gtest
Reviewed-by: gziemski, vlivanov
This commit is contained in:
Igor Ignatyev
parent
5f7a59f69c
commit
de6f5b33ed
@ -42,7 +42,6 @@ void InternalVMTests::run_test(const char* name, void (*test)()) {
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void InternalVMTests::run() {
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tty->print_cr("Running internal VM tests");
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run_unit_test(TestReserveMemorySpecial_test);
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tty->print_cr("All internal VM tests passed");
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}
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243
test/hotspot/gtest/runtime/test_os_linux.cpp
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243
test/hotspot/gtest/runtime/test_os_linux.cpp
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@ -0,0 +1,243 @@
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/*
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* Copyright (c) 2018, 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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#include "precompiled.hpp"
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#ifdef LINUX
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#include <sys/mman.h>
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#include "runtime/os.hpp"
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#include "unittest.hpp"
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namespace {
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static void small_page_write(void* addr, size_t size) {
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size_t page_size = os::vm_page_size();
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char* end = (char*)addr + size;
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for (char* p = (char*)addr; p < end; p += page_size) {
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*p = 1;
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}
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}
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class HugeTlbfsMemory : private ::os::Linux {
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char* const _ptr;
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const size_t _size;
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public:
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static char* reserve_memory_special_huge_tlbfs_only(size_t bytes, char* req_addr, bool exec) {
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return os::Linux::reserve_memory_special_huge_tlbfs_only(bytes, req_addr, exec);
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}
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static char* reserve_memory_special_huge_tlbfs_mixed(size_t bytes, size_t alignment, char* req_addr, bool exec) {
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return os::Linux::reserve_memory_special_huge_tlbfs_mixed(bytes, alignment, req_addr, exec);
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}
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HugeTlbfsMemory(char* const ptr, size_t size) : _ptr(ptr), _size(size) { }
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~HugeTlbfsMemory() {
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if (_ptr != NULL) {
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os::Linux::release_memory_special_huge_tlbfs(_ptr, _size);
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}
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}
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};
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class ShmMemory : private ::os::Linux {
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char* const _ptr;
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const size_t _size;
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public:
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static char* reserve_memory_special_shm(size_t bytes, size_t alignment, char* req_addr, bool exec) {
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return os::Linux::reserve_memory_special_shm(bytes, alignment, req_addr, exec);
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}
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ShmMemory(char* const ptr, size_t size) : _ptr(ptr), _size(size) { }
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~ShmMemory() {
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os::Linux::release_memory_special_shm(_ptr, _size);
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}
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};
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// have to use these functions, as gtest's _PRED macros don't like is_aligned
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// nor (is_aligned<size_t, size_t>)
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static bool is_size_aligned(size_t size, size_t alignment) {
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return is_aligned(size, alignment);
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}
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static bool is_ptr_aligned(char* ptr, size_t alignment) {
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return is_aligned(ptr, alignment);
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}
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static void test_reserve_memory_special_shm(size_t size, size_t alignment) {
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ASSERT_TRUE(UseSHM) << "must be used only when UseSHM is true";
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char* addr = ShmMemory::reserve_memory_special_shm(size, alignment, NULL, false);
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if (addr != NULL) {
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ShmMemory mr(addr, size);
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EXPECT_PRED2(is_ptr_aligned, addr, alignment);
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EXPECT_PRED2(is_ptr_aligned, addr, os::large_page_size());
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small_page_write(addr, size);
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}
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}
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}
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TEST_VM(os_linux, reserve_memory_special_huge_tlbfs_only) {
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if (!UseHugeTLBFS) {
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return;
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}
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size_t lp = os::large_page_size();
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for (size_t size = lp; size <= lp * 10; size += lp) {
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char* addr = HugeTlbfsMemory::reserve_memory_special_huge_tlbfs_only(size, NULL, false);
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if (addr != NULL) {
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HugeTlbfsMemory mr(addr, size);
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small_page_write(addr, size);
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}
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}
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}
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TEST_VM(os_linux, reserve_memory_special_huge_tlbfs_mixed_without_addr) {
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if (!UseHugeTLBFS) {
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return;
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}
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size_t lp = os::large_page_size();
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size_t ag = os::vm_allocation_granularity();
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// sizes to test
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const size_t sizes[] = {
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lp, lp + ag, lp + lp / 2, lp * 2,
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lp * 2 + ag, lp * 2 - ag, lp * 2 + lp / 2,
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lp * 10, lp * 10 + lp / 2
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};
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const int num_sizes = sizeof(sizes) / sizeof(size_t);
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for (int i = 0; i < num_sizes; i++) {
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const size_t size = sizes[i];
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for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) {
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char* p = HugeTlbfsMemory::reserve_memory_special_huge_tlbfs_mixed(size, alignment, NULL, false);
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if (p != NULL) {
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HugeTlbfsMemory mr(p, size);
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EXPECT_PRED2(is_ptr_aligned, p, alignment) << " size = " << size;
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small_page_write(p, size);
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}
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}
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}
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}
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TEST_VM(os_linux, reserve_memory_special_huge_tlbfs_mixed_with_good_req_addr) {
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if (!UseHugeTLBFS) {
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return;
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}
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size_t lp = os::large_page_size();
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size_t ag = os::vm_allocation_granularity();
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// sizes to test
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const size_t sizes[] = {
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lp, lp + ag, lp + lp / 2, lp * 2,
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lp * 2 + ag, lp * 2 - ag, lp * 2 + lp / 2,
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lp * 10, lp * 10 + lp / 2
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};
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const int num_sizes = sizeof(sizes) / sizeof(size_t);
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// Pre-allocate an area as large as the largest allocation
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// and aligned to the largest alignment we will be testing.
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const size_t mapping_size = sizes[num_sizes - 1] * 2;
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char* const mapping = (char*) ::mmap(NULL, mapping_size,
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PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE,
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-1, 0);
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ASSERT_TRUE(mapping != NULL) << " mmap failed, mapping_size = " << mapping_size;
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// Unmap the mapping, it will serve as a value for a "good" req_addr
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::munmap(mapping, mapping_size);
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for (int i = 0; i < num_sizes; i++) {
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const size_t size = sizes[i];
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for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) {
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char* const req_addr = align_up(mapping, alignment);
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char* p = HugeTlbfsMemory::reserve_memory_special_huge_tlbfs_mixed(size, alignment, req_addr, false);
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if (p != NULL) {
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HugeTlbfsMemory mr(p, size);
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ASSERT_EQ(req_addr, p) << " size = " << size << ", alignment = " << alignment;
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small_page_write(p, size);
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}
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}
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}
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}
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TEST_VM(os_linux, reserve_memory_special_huge_tlbfs_mixed_with_bad_req_addr) {
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if (!UseHugeTLBFS) {
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return;
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}
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size_t lp = os::large_page_size();
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size_t ag = os::vm_allocation_granularity();
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// sizes to test
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const size_t sizes[] = {
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lp, lp + ag, lp + lp / 2, lp * 2,
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lp * 2 + ag, lp * 2 - ag, lp * 2 + lp / 2,
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lp * 10, lp * 10 + lp / 2
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};
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const int num_sizes = sizeof(sizes) / sizeof(size_t);
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// Pre-allocate an area as large as the largest allocation
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// and aligned to the largest alignment we will be testing.
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const size_t mapping_size = sizes[num_sizes - 1] * 2;
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char* const mapping = (char*) ::mmap(NULL, mapping_size,
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PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE,
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-1, 0);
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ASSERT_TRUE(mapping != NULL) << " mmap failed, mapping_size = " << mapping_size;
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// Leave the mapping intact, it will server as "bad" req_addr
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class MappingHolder {
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char* const _mapping;
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size_t _size;
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public:
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MappingHolder(char* mapping, size_t size) : _mapping(mapping), _size(size) { }
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~MappingHolder() {
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::munmap(_mapping, _size);
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}
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} holder(mapping, mapping_size);
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for (int i = 0; i < num_sizes; i++) {
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const size_t size = sizes[i];
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for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) {
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char* const req_addr = align_up(mapping, alignment);
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char* p = HugeTlbfsMemory::reserve_memory_special_huge_tlbfs_mixed(size, alignment, req_addr, false);
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HugeTlbfsMemory mr(p, size);
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// as the area around req_addr contains already existing mappings, the API should always
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// return NULL (as per contract, it cannot return another address)
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EXPECT_TRUE(p == NULL) << " size = " << size
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<< ", alignment = " << alignment
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<< ", req_addr = " << req_addr
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<< ", p = " << p;
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}
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}
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}
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TEST_VM(os_linux, reserve_memory_special_shm) {
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if (!UseSHM) {
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return;
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}
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size_t lp = os::large_page_size();
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size_t ag = os::vm_allocation_granularity();
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for (size_t size = ag; size < lp * 3; size += ag) {
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for (size_t alignment = ag; is_size_aligned(size, alignment); alignment *= 2) {
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EXPECT_NO_FATAL_FAILURE(test_reserve_memory_special_shm(size, alignment));
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}
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}
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}
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#endif
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87
test/hotspot/gtest/runtime/test_os_windows.cpp
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87
test/hotspot/gtest/runtime/test_os_windows.cpp
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@ -0,0 +1,87 @@
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/*
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* Copyright (c) 2018, 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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#include "precompiled.hpp"
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#ifdef _WINDOWS
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#include "runtime/os.hpp"
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#include "runtime/flags/flagSetting.hpp"
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#include "unittest.hpp"
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namespace {
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class MemoryReleaser {
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char* const _ptr;
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const size_t _size;
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public:
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MemoryReleaser(char* ptr, size_t size) : _ptr(ptr), _size(size) { }
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~MemoryReleaser() {
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os::release_memory_special(_ptr, _size);
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}
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};
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}
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// test tries to allocate memory in a single contiguous memory block at a particular address.
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// The test first tries to find a good approximate address to allocate at by using the same
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// method to allocate some memory at any address. The test then tries to allocate memory in
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// the vicinity (not directly after it to avoid possible by-chance use of that location)
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// This is of course only some dodgy assumption, there is no guarantee that the vicinity of
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// the previously allocated memory is available for allocation. The only actual failure
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// that is reported is when the test tries to allocate at a particular location but gets a
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// different valid one. A NULL return value at this point is not considered an error but may
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// be legitimate.
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TEST_VM(os_windows, reserve_memory_special) {
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if (!UseLargePages) {
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return;
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}
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// set globals to make sure we hit the correct code path
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FLAG_GUARD(UseLargePagesIndividualAllocation);
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FLAG_GUARD(UseNUMAInterleaving);
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FLAG_SET_CMDLINE(bool, UseLargePagesIndividualAllocation, false);
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FLAG_SET_CMDLINE(bool, UseNUMAInterleaving, false);
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const size_t large_allocation_size = os::large_page_size() * 4;
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char* result = os::reserve_memory_special(large_allocation_size, os::large_page_size(), NULL, false);
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if (result != NULL) {
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// failed to allocate memory, skipping the test
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return;
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}
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MemoryReleaser mr(result, large_allocation_size);
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// allocate another page within the recently allocated memory area which seems to be a good location. At least
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// we managed to get it once.
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const size_t expected_allocation_size = os::large_page_size();
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char* expected_location = result + os::large_page_size();
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char* actual_location = os::reserve_memory_special(expected_allocation_size, os::large_page_size(), expected_location, false);
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if (actual_location != NULL) {
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// failed to allocate memory, skipping the test
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return;
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}
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MemoryReleaser mr2(actual_location, expected_allocation_size);
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EXPECT_EQ(expected_location, actual_location)
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<< "Failed to allocate memory at requested location " << expected_location << " of size " << expected_allocation_size;
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}
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#endif
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