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765f5cd4e7
Dl_info struct should only be used if dladdr() has returned non-zero (no errors) and always check the dladdr() return value; Dl_info.dli_sname and Dl_info.dli_saddr fields should only be used if non-NULL; update/improve runtime/6888954/vmerrors.sh test Reviewed-by: dsamersoff, zgu, hseigel, coleenp
115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
/*
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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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#ifndef OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP
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#define OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP
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#include "runtime/atomic.inline.hpp"
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#include "runtime/os.hpp"
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#ifdef TARGET_OS_ARCH_windows_x86
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# include "orderAccess_windows_x86.inline.hpp"
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#endif
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inline const char* os::file_separator() { return "\\"; }
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inline const char* os::line_separator() { return "\r\n"; }
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inline const char* os::path_separator() { return ";"; }
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inline const char* os::dll_file_extension() { return ".dll"; }
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inline const int os::default_file_open_flags() { return O_BINARY | O_NOINHERIT;}
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// File names are case-insensitive on windows only
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inline int os::file_name_strcmp(const char* s, const char* t) {
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return _stricmp(s, t);
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}
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inline void os::dll_unload(void *lib) {
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::FreeLibrary((HMODULE)lib);
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}
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inline void* os::dll_lookup(void *lib, const char *name) {
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return (void*)::GetProcAddress((HMODULE)lib, name);
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}
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// Used to improve time-sharing on some systems
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inline void os::loop_breaker(int attempts) {}
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inline bool os::obsolete_option(const JavaVMOption *option) {
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return false;
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}
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inline bool os::uses_stack_guard_pages() {
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return os::win32::is_nt();
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}
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inline bool os::allocate_stack_guard_pages() {
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assert(uses_stack_guard_pages(), "sanity check");
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return true;
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}
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inline int os::readdir_buf_size(const char *path)
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{
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/* As Windows doesn't use the directory entry buffer passed to
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os::readdir() this can be as short as possible */
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return 1;
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}
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// Bang the shadow pages if they need to be touched to be mapped.
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inline void os::bang_stack_shadow_pages() {
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// Write to each page of our new frame to force OS mapping.
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// If we decrement stack pointer more than one page
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// the OS may not map an intervening page into our space
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// and may fault on a memory access to interior of our frame.
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address sp = current_stack_pointer();
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for (int pages = 1; pages <= StackShadowPages; pages++) {
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*((int *)(sp - (pages * vm_page_size()))) = 0;
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}
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}
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inline bool os::numa_has_static_binding() { return true; }
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inline bool os::numa_has_group_homing() { return false; }
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inline size_t os::read(int fd, void *buf, unsigned int nBytes) {
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return ::read(fd, buf, nBytes);
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}
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inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
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return ::read(fd, buf, nBytes);
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}
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inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
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return ::write(fd, buf, nBytes);
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}
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inline int os::close(int fd) {
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return ::close(fd);
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}
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#ifndef PRODUCT
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#define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) \
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os::win32::call_test_func_with_wrapper(f)
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#endif
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#endif // OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP
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