/* * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #ifndef OS_CPU_LINUX_AARCH64_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_AARCH64_HPP #define OS_CPU_LINUX_AARCH64_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_AARCH64_HPP #include "gc/z/zBackingFile_linux_aarch64.hpp" #include "gc/z/zMemory.hpp" class ZErrno; class ZPhysicalMemory; class ZPhysicalMemoryBacking { private: ZBackingFile _file; ZMemoryManager _committed; ZMemoryManager _uncommitted; void warn_available_space(size_t max) const; void warn_max_map_count(size_t max) const; void map_failed(ZErrno err) const; void advise_view(uintptr_t addr, size_t size, int advice) const; void pretouch_view(uintptr_t addr, size_t size) const; void map_view(const ZPhysicalMemory& pmem, uintptr_t addr, bool pretouch) const; void unmap_view(const ZPhysicalMemory& pmem, uintptr_t addr) const; public: bool is_initialized() const; void warn_commit_limits(size_t max) const; bool supports_uncommit(); size_t commit(size_t size); size_t uncommit(size_t size); ZPhysicalMemory alloc(size_t size); void free(const ZPhysicalMemory& pmem); uintptr_t nmt_address(uintptr_t offset) const; void map(const ZPhysicalMemory& pmem, uintptr_t offset) const; void unmap(const ZPhysicalMemory& pmem, uintptr_t offset) const; void debug_map(const ZPhysicalMemory& pmem, uintptr_t offset) const; void debug_unmap(const ZPhysicalMemory& pmem, uintptr_t offset) const; }; #endif // OS_CPU_LINUX_AARCH64_GC_Z_ZPHYSICALMEMORYBACKING_LINUX_AARCH64_HPP