view src/os/bsd/vm/hpi_bsd.hpp @ 525:4244db6cd9a9

Use includeDB corrections from Coleen Phillimore @ Sun to correct build without precompiled headers. Fixes build for gcc 3.3 which OpenBSD uses. Diff from hotspot-dev list and should make it into the main tree: http://thread.gmane.org/gmane.comp.java.openjdk.hotspot.devel/1246
author kurt
date Tue, 20 Jan 2009 18:53:14 -0500
parents
children 0273528e9e37
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/*
 * 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/Bsd,
// 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>

#ifdef __APPLE__
#include <sys/select.h>
#endif

// HPI_FileInterface

inline int hpi::close(int fd) {
  RESTARTABLE_RETURN_INT(::close(fd)); 
}

inline size_t hpi::read(int fd, void *buf, unsigned int nBytes) {
  INTERRUPTIBLE_RETURN_INT(::read(fd, buf, (size_t) nBytes), os::Bsd::clear_interrupted);
}

inline size_t hpi::write(int fd, const void *buf, unsigned int nBytes) {
  INTERRUPTIBLE_RETURN_INT(::write(fd, buf, (size_t) nBytes), os::Bsd::clear_interrupted);
}


// HPI_SocketInterface

inline int hpi::socket_close(int fd) {
  RESTARTABLE_RETURN_INT(::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) {
  INTERRUPTIBLE_RETURN_INT(::recv(fd, buf, nBytes, (unsigned int) flags), os::Bsd::clear_interrupted);
}

inline int hpi::send(int fd, char *buf, int nBytes, int flags) {
  INTERRUPTIBLE_RETURN_INT(::send(fd, buf, nBytes, (unsigned int) flags), os::Bsd::clear_interrupted);
}

inline int hpi::raw_send(int fd, char *buf, int nBytes, int flags) {
  return send(fd, buf, nBytes, 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(;;) {
    int res;
#ifdef __APPLE__
    // XXXDARWIN: poll() appears non-interruptable on Leopard: Thread.interrupt() failed to
    // cause interrupt. Does poll work at all on Tiger? Needs investigation.
    fd_set fdset;
    struct timeval seltv;

    FD_ZERO(&fdset);
    FD_SET(fd, &fdset);

    seltv.tv_sec = timeout / 1000;
    seltv.tv_usec = (timeout % 1000) * 1000;

    INTERRUPTIBLE_NORESTART(::select(fd+1, &fdset, NULL, NULL, &seltv), res, os::Bsd::clear_interrupted);
#else
    struct pollfd pfd;

    pfd.fd = fd;
    pfd.events = POLLIN | POLLERR;

    INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Bsd::clear_interrupted);
#endif

    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 hpi::listen(int fd, int count) {
  return ::listen(fd, count);
}

inline int hpi::connect(int fd, struct sockaddr *him, int len) {
  do {
    int _result;
    INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,
			    os::Bsd::clear_interrupted);

    // Depending on when thread interruption is reset, _result could be
    // one of two values when errno == EINTR

    if (((_result == OS_INTRPT) || (_result == OS_ERR)) && (errno == EINTR)) {
      /* restarting a connect() changes its errno semantics */
      INTERRUPTIBLE(::connect(fd, him, len), _result,
		      os::Bsd::clear_interrupted);
      /* undo these changes */
      if (_result == OS_ERR) {
	if (errno == EALREADY) errno = EINPROGRESS; /* fall through */
	else if (errno == EISCONN) { errno = 0; return OS_OK; }
      }
    }
    return _result;
  } while(false);
}

inline int hpi::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.
  // Bsd doc says this can't return EINTR, unlike accept() on Solaris

  if (fd < 0)
    return OS_ERR;
  INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, (socklen_t*) len), os::Bsd::clear_interrupted); 
}

inline int hpi::recvfrom(int fd, char *buf, int nBytes, int flags,
                         sockaddr *from, int *fromlen) {
  INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen), os::Bsd::clear_interrupted);
}

inline int hpi::sendto(int fd, char *buf, int len, int flags,
                        struct sockaddr *to, int tolen) {
  INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, (unsigned int) flags, to, tolen),os::Bsd::clear_interrupted);
}

inline int hpi::socket_available(int fd, jint *pbytes) {
  int ret;

  if (fd < 0)
    return OS_OK;

  RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);

  //%% 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 == OS_ERR) ? 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){
  INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),os::Bsd::clear_interrupted);
}

/*
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