Mercurial > hg > graal-jvmci-8
diff src/os/solaris/vm/os_solaris.inline.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | fcbfc50865ab |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/os/solaris/vm/os_solaris.inline.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,206 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +inline const char* os::file_separator() { return "/"; } +inline const char* os::line_separator() { return "\n"; } +inline const char* os::path_separator() { return ":"; } + +inline const char* os::jlong_format_specifier() { return "%lld"; } +inline const char* os::julong_format_specifier() { return "%llu"; } + +// File names are case-sensitive on windows only +inline int os::file_name_strcmp(const char* s1, const char* s2) { + return strcmp(s1, s2); +} + +inline bool os::uses_stack_guard_pages() { + return true; +} + +inline bool os::allocate_stack_guard_pages() { + assert(uses_stack_guard_pages(), "sanity check"); + int r = thr_main() ; + guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; + return r; +} + + +// On Solaris, reservations are made on a page by page basis, nothing to do. +inline void os::split_reserved_memory(char *base, size_t size, + size_t split, bool realloc) { +} + + +// Bang the shadow pages if they need to be touched to be mapped. +inline void os::bang_stack_shadow_pages() { +} + +inline DIR* os::opendir(const char* dirname) +{ + assert(dirname != NULL, "just checking"); + return ::opendir(dirname); +} + +inline int os::readdir_buf_size(const char *path) +{ + int size = pathconf(path, _PC_NAME_MAX); + return (size < 0 ? MAXPATHLEN : size) + sizeof(dirent) + 1; +} + +inline struct dirent* os::readdir(DIR* dirp, dirent* dbuf) +{ + assert(dirp != NULL, "just checking"); +#if defined(_LP64) || defined(_GNU_SOURCE) + dirent* p; + int status; + + if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { + errno = status; + return NULL; + } else + return p; +#else // defined(_LP64) || defined(_GNU_SOURCE) + return ::readdir_r(dirp, dbuf); +#endif // defined(_LP64) || defined(_GNU_SOURCE) +} + +inline int os::closedir(DIR *dirp) +{ + assert(dirp != NULL, "just checking"); + return ::closedir(dirp); +} + +////////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////////// + +// macros for interruptible io and system calls and system call restarting + +#define _INTERRUPTIBLE(_setup, _cmd, _result, _thread, _clear, _before, _after, _int_enable) \ +do { \ + _setup; \ + _before; \ + OSThread* _osthread = _thread->osthread(); \ + if (_int_enable && _thread->has_last_Java_frame()) { \ + /* this is java interruptible io stuff */ \ + if (os::is_interrupted(_thread, _clear)) { \ + os::Solaris::bump_interrupted_before_count(); \ + _result = OS_INTRPT; \ + } else { \ + /* _cmd always expands to an assignment to _result */ \ + if ((_cmd) < 0 && errno == EINTR \ + && os::is_interrupted(_thread, _clear)) { \ + os::Solaris::bump_interrupted_during_count(); \ + _result = OS_INTRPT; \ + } \ + } \ + } else { \ + /* this is normal blocking io stuff */ \ + _cmd; \ + } \ + _after; \ +} while(false) + +// Interruptible io support + restarting of interrupted system calls + +#ifndef ASSERT + +#define INTERRUPTIBLE(_cmd, _result, _clear) do { \ + _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO); \ +} while((_result == OS_ERR) && (errno == EINTR)) + +#else + +// This adds an assertion that it is only called from thread_in_native +// The call overhead is skipped for performance in product mode +#define INTERRUPTIBLE(_cmd, _result, _clear) do { \ + _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO ); \ +} while((_result == OS_ERR) && (errno == EINTR)) + +#endif + +// Used for calls from _thread_in_vm, not from _thread_in_native +#define INTERRUPTIBLE_VM(_cmd, _result, _clear) do { \ + _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible(_thread), UseVMInterruptibleIO ); \ +} while((_result == OS_ERR) && (errno == EINTR)) + +/* Use NORESTART when the system call cannot return EINTR, when something other + than a system call is being invoked, or when the caller must do EINTR + handling. */ + +#ifndef ASSERT + +#define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \ + _INTERRUPTIBLE( JavaThread* _thread = (JavaThread*)ThreadLocalStorage::thread(),_result = _cmd, _result, _thread, _clear, , , UseVMInterruptibleIO) + +#else + +// This adds an assertion that it is only called from thread_in_native +// The call overhead is skipped for performance in product mode +#define INTERRUPTIBLE_NORESTART(_cmd, _result, _clear) \ + _INTERRUPTIBLE(JavaThread* _thread = os::Solaris::setup_interruptible_native(), _result = _cmd, _result, _thread, _clear, , os::Solaris::cleanup_interruptible_native(_thread), UseVMInterruptibleIO ) + +#endif + +// Don't attend to UseVMInterruptibleIO. Always allow interruption. +// Also assumes that it is called from the _thread_blocked state. +// Used by os_sleep(). + +#define INTERRUPTIBLE_NORESTART_VM_ALWAYS(_cmd, _result, _thread, _clear) \ + _INTERRUPTIBLE(os::Solaris::setup_interruptible_already_blocked(_thread), _result = _cmd, _result, _thread, _clear, , , true ) + +#define INTERRUPTIBLE_RETURN_INT(_cmd, _clear) do { \ + int _result; \ + do { \ + INTERRUPTIBLE(_cmd, _result, _clear); \ + } while((_result == OS_ERR) && (errno == EINTR)); \ + return _result; \ +} while(false) + +#define INTERRUPTIBLE_RETURN_INT_VM(_cmd, _clear) do { \ + int _result; \ + do { \ + INTERRUPTIBLE_VM(_cmd, _result, _clear); \ + } while((_result == OS_ERR) && (errno == EINTR)); \ + return _result; \ +} while(false) + +#define INTERRUPTIBLE_RETURN_INT_NORESTART(_cmd, _clear) do { \ + int _result; \ + INTERRUPTIBLE_NORESTART(_cmd, _result, _clear); \ + return _result; \ +} while(false) + +/* Use the RESTARTABLE macros when interruptible io is not needed */ + +#define RESTARTABLE(_cmd, _result) do { \ + do { \ + _result = _cmd; \ + } while((_result == OS_ERR) && (errno == EINTR)); \ +} while(false) + +#define RESTARTABLE_RETURN_INT(_cmd) do { \ + int _result; \ + RESTARTABLE(_cmd, _result); \ + return _result; \ +} while(false)