7089790: integrate bsd-port changes

Co-authored-by: Greg Lewis <glewis@eyesbeyond.com>
Co-authored-by: Jung-uk Kim <jkim@freebsd.org>
Co-authored-by: Christos Zoulas <christos@zoulas.com>
Co-authored-by: Landon Fuller <landonf@plausible.coop>
Co-authored-by: The FreeBSD Foundation <board@freebsdfoundation.org>
Co-authored-by: Michael Franz <mvfranz@gmail.com>
Co-authored-by: Roger Hoover <rhoover@apple.com>
Co-authored-by: Alexander Strange <astrange@apple.com>
Reviewed-by: kvn, twisti, jrose

hotspot/src/os/bsd/vm/os_bsd.inline.hpp

@@ -0,0 +1,302 @@
+/*
+ * Copyright (c) 1999, 2011, 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_BSD_VM_OS_BSD_INLINE_HPP
+#define OS_BSD_VM_OS_BSD_INLINE_HPP
+
+#include "runtime/atomic.hpp"
+#include "runtime/os.hpp"
+#ifdef TARGET_OS_ARCH_bsd_x86
+# include "atomic_bsd_x86.inline.hpp"
+# include "orderAccess_bsd_x86.inline.hpp"
+#endif
+#ifdef TARGET_OS_ARCH_bsd_zero
+# include "atomic_bsd_zero.inline.hpp"
+# include "orderAccess_bsd_zero.inline.hpp"
+#endif
+
+// System includes
+
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/poll.h>
+#include <netdb.h>
+
+inline void* os::thread_local_storage_at(int index) {
+  return pthread_getspecific((pthread_key_t)index);
+}
+
+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::obsolete_option(const JavaVMOption *option) {
+  return false;
+}
+
+inline bool os::uses_stack_guard_pages() {
+  return true;
+}
+
+inline bool os::allocate_stack_guard_pages() {
+  assert(uses_stack_guard_pages(), "sanity check");
+#if !defined(__FreeBSD__) || __FreeBSD__ < 5
+  // Since FreeBSD 4 uses malloc() for allocating the thread stack
+  // there is no need to do anything extra to allocate the guard pages
+  return false;
+#else
+  // FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks.
+  // Must 'allocate' them or guard pages are ignored.
+  return true;
+#endif
+}
+
+
+// On Bsd, 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 void os::dll_unload(void *lib) {
+  ::dlclose(lib);
+}
+
+inline const int os::default_file_open_flags() { return 0;}
+
+inline DIR* os::opendir(const char* dirname)
+{
+  assert(dirname != NULL, "just checking");
+  return ::opendir(dirname);
+}
+
+inline int os::readdir_buf_size(const char *path)
+{
+  return NAME_MAX + sizeof(dirent) + 1;
+}
+
+inline jlong os::lseek(int fd, jlong offset, int whence) {
+  return (jlong) ::lseek(fd, offset, whence);
+}
+
+inline int os::fsync(int fd) {
+  return ::fsync(fd);
+}
+
+inline char* os::native_path(char *path) {
+  return path;
+}
+
+inline int os::ftruncate(int fd, jlong length) {
+  return ::ftruncate(fd, length);
+}
+
+inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
+{
+  dirent* p;
+  int status;
+  assert(dirp != NULL, "just checking");
+
+  // NOTE: Bsd readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
+  // version. Here is the doc for this function:
+  // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
+
+  if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
+    errno = status;
+    return NULL;
+  } else
+    return p;
+}
+
+inline int os::closedir(DIR *dirp) {
+  assert(dirp != NULL, "argument is NULL");
+  return ::closedir(dirp);
+}
+
+// macros for restartable system calls
+
+#define RESTARTABLE(_cmd, _result) do { \
+    _result = _cmd; \
+  } while(((int)_result == OS_ERR) && (errno == EINTR))
+
+#define RESTARTABLE_RETURN_INT(_cmd) do { \
+  int _result; \
+  RESTARTABLE(_cmd, _result); \
+  return _result; \
+} while(false)
+
+inline bool os::numa_has_static_binding()   { return true; }
+inline bool os::numa_has_group_homing()     { return false;  }
+
+inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
+  size_t res;
+  RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
+  return res;
+}
+
+inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
+  size_t res;
+  RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
+  return res;
+}
+
+inline int os::close(int fd) {
+  RESTARTABLE_RETURN_INT(::close(fd));
+}
+
+inline int os::socket_close(int fd) {
+  RESTARTABLE_RETURN_INT(::close(fd));
+}
+
+inline int os::socket(int domain, int type, int protocol) {
+  return ::socket(domain, type, protocol);
+}
+
+inline int os::recv(int fd, char *buf, int nBytes, int flags) {
+  RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, (unsigned int) flags));
+}
+
+inline int os::send(int fd, char *buf, int nBytes, int flags) {
+  RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, (unsigned int) flags));
+}
+
+inline int os::raw_send(int fd, char *buf, int nBytes, int flags) {
+  return os::send(fd, buf, nBytes, flags);
+}
+
+inline int os::timeout(int fd, long timeout) {
+  julong prevtime,newtime;
+  struct timeval t;
+
+  gettimeofday(&t, NULL);
+  prevtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec / 1000;
+
+  for(;;) {
+    struct pollfd pfd;
+
+    pfd.fd = fd;
+    pfd.events = POLLIN | POLLERR;
+
+    int res = ::poll(&pfd, 1, timeout);
+
+    if (res == OS_ERR && errno == EINTR) {
+
+      // On Bsd any value < 0 means "forever"
+
+      if(timeout >= 0) {
+        gettimeofday(&t, NULL);
+        newtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec / 1000;
+        timeout -= newtime - prevtime;
+        if(timeout <= 0)
+          return OS_OK;
+        prevtime = newtime;
+      }
+    } else
+      return res;
+  }
+}
+
+inline int os::listen(int fd, int count) {
+  return ::listen(fd, count);
+}
+
+inline int os::connect(int fd, struct sockaddr *him, int len) {
+  RESTARTABLE_RETURN_INT(::connect(fd, him, len));
+}
+
+inline int os::accept(int fd, struct sockaddr *him, int *len) {
+  // This cast is from int to unsigned int on bsd.  Since we
+  // only pass the parameter "len" around the vm and don't try to
+  // fetch it's value, this cast is safe for now. The java.net group
+  // may need and want to change this interface someday if socklen_t goes
+  // to 64 bits on some platform that we support.
+
+  // At least OpenBSD and FreeBSD can return EINTR from accept.
+  RESTARTABLE_RETURN_INT(::accept(fd, him, (socklen_t *)len));
+}
+
+inline int os::recvfrom(int fd, char *buf, int nBytes, int flags,
+                         sockaddr *from, int *fromlen) {
+  RESTARTABLE_RETURN_INT(::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen));
+}
+
+inline int os::sendto(int fd, char *buf, int len, int flags,
+                        struct sockaddr *to, int tolen) {
+  RESTARTABLE_RETURN_INT(::sendto(fd, buf, len, (unsigned int) flags, to, tolen));
+}
+
+inline int os::socket_shutdown(int fd, int howto){
+  return ::shutdown(fd, howto);
+}
+
+inline int os::bind(int fd, struct sockaddr *him, int len){
+  return ::bind(fd, him, len);
+}
+
+inline int os::get_sock_name(int fd, struct sockaddr *him, int *len){
+  return ::getsockname(fd, him, (socklen_t *)len);
+}
+
+inline int os::get_host_name(char* name, int namelen){
+  return ::gethostname(name, namelen);
+}
+
+inline struct hostent*  os::get_host_by_name(char* name) {
+  return ::gethostbyname(name);
+}
+inline int os::get_sock_opt(int fd, int level, int optname,
+                             char *optval, int* optlen){
+  return ::getsockopt(fd, level, optname, optval, (socklen_t *)optlen);
+}
+
+inline int os::set_sock_opt(int fd, int level, int optname,
+                             const char *optval, int optlen){
+  return ::setsockopt(fd, level, optname, optval, optlen);
+}
+#endif // OS_BSD_VM_OS_BSD_INLINE_HPP