jdk8-mips64-public/hotspot: src/os/linux/vm/hpi_linux.hpp@a61af66fc99e (annotated)

src/os/linux/vm/hpi_linux.hpp@a61af66fc99e (annotated)

src/os/linux/vm/hpi_linux.hpp

Sat, 01 Dec 2007 00:00:00 +0000

author: duke
date: Sat, 01 Dec 2007 00:00:00 +0000
changeset 435: a61af66fc99e
child 657: 2a1a77d3458f
permissions: -rw-r--r--

Initial load

 /*
  * Copyright 1999-2005 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.
  *
  */
 //
 // Because the interruptible IO has been dropped for HotSpot/Linux,
 // the following HPI interface is very different from HotSparc.
 //
 #include <unistd.h>
 #include <sys/socket.h>
 #include <sys/poll.h>
 #include <sys/ioctl.h>
 #include <netdb.h>
 // HPI_FileInterface
 inline int hpi::close(int fd) {
   return ::close(fd);
 }
 inline size_t hpi::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 hpi::write(int fd, const void *buf, unsigned int nBytes) {
   size_t res;
   RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
   return res;
 }
 // HPI_SocketInterface
 inline int hpi::socket_close(int fd) {
   return ::close(fd);
 }
 inline int hpi::socket(int domain, int type, int protocol) {
   return ::socket(domain, type, protocol);
 }
 inline int hpi::recv(int fd, char *buf, int nBytes, int flags) {
   RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, (unsigned int) flags));
 }
 inline int hpi::send(int fd, char *buf, int nBytes, int flags) {
   RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, (unsigned int) flags));
 }
 inline int hpi::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 Linux 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 hpi::listen(int fd, int count) {
   return ::listen(fd, count);
 }
 inline int hpi::connect(int fd, struct sockaddr *him, int len) {
   RESTARTABLE_RETURN_INT(::connect(fd, him, len));
 }
 inline int hpi::accept(int fd, struct sockaddr *him, int *len) {
   // This cast is from int to unsigned int on linux.  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.
   // Linux doc says this can't return EINTR, unlike accept() on Solaris
   return ::accept(fd, him, (socklen_t *)len);
 }
 inline int hpi::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 hpi::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 hpi::socket_available(int fd, jint *pbytes) {
   // Linux doc says EINTR not returned, unlike Solaris
   int ret = ::ioctl(fd, FIONREAD, pbytes);
   //%% note ioctl can return 0 when successful, JVM_SocketAvailable
   // is expected to return 0 on failure and 1 on success to the jdk.
   return (ret < 0) ? 0 : 1;
 }
 // following methods have been updated to avoid problems in
 // hpi's sockets calls based on sys_api_td.c (JDK1.3)
 /*
 HPIDECL(socket_shutdown, "socket_shutdown", _socket, SocketShutdown,
         int, "%d",
         (int fd, int howto),
         ("fd = %d, howto = %d", fd, howto),
         (fd, howto));
         */
 inline int hpi::socket_shutdown(int fd, int howto){
   return ::shutdown(fd, howto);
 }
 /*
 HPIDECL(bind, "bind", _socket, Bind,
         int, "%d",
         (int fd, struct sockaddr *him, int len),
         ("fd = %d, him = %p, len = %d",
          fd, him, len),
         (fd, him, len));
 */
 inline int hpi::bind(int fd, struct sockaddr *him, int len){
   return ::bind(fd, him, len);
 }
 /*
 HPIDECL(get_sock_name, "get_sock_name", _socket, GetSocketName,
         int, "%d",
         (int fd, struct sockaddr *him, int *len),
         ("fd = %d, him = %p, len = %p",
          fd, him, len),
         (fd, him, len));
         */
 inline int hpi::get_sock_name(int fd, struct sockaddr *him, int *len){
   return ::getsockname(fd, him, (socklen_t *)len);
 }
 /*
 HPIDECL(get_host_name, "get_host_name", _socket, GetHostName, int, "%d",
         (char *hostname, int namelen),
         ("hostname = %p, namelen = %d",
          hostname, namelen),
         (hostname, namelen));
         */
 inline int hpi::get_host_name(char* name, int namelen){
   return ::gethostname(name, namelen);
 }
 /*
 HPIDECL(get_sock_opt, "get_sock_opt", _socket, SocketGetOption, int, "%d",
         (int fd, int level, int optname, char *optval, int* optlen),
         ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %p",
          fd, level, optname, optval, optlen),
         (fd, level, optname, optval, optlen));
         */
 inline int hpi::get_sock_opt(int fd, int level, int optname,
                              char *optval, int* optlen){
   return ::getsockopt(fd, level, optname, optval, (socklen_t *)optlen);
 }
 /*
 HPIDECL(set_sock_opt, "set_sock_opt", _socket, SocketSetOption, int, "%d",
         (int fd, int level, int optname, const char *optval, int optlen),
         ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %d",
          fd, level, optname, optval, optlen),
         (fd, level, optname, optval, optlen));
         */
 inline int hpi::set_sock_opt(int fd, int level, int optname,
                              const char *optval, int optlen){
   return ::setsockopt(fd, level, optname, optval, optlen);
 }
 // Reconciliation History
 // hpi_solaris.hpp      1.9 99/08/30 16:31:23
 // End

Mercurial > jdk8-mips64-public > hotspot / annotate

src/os/linux/vm/hpi_linux.hpp@a61af66fc99e (annotated)

src/os/linux/vm/hpi_linux.hpp