/*

 * Copyright 1998-2007 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.

 *

 */

//

// Parts of the HPI interface for which the HotSparc does not use the

// HPI (because the interruptible IO mechanims used are different).

//

#include <sys/socket.h>

#include <sys/poll.h>

#include <sys/filio.h>

#include <unistd.h>

#include <netdb.h>

#include <setjmp.h>

// HPI_FileInterface

// Many system calls can be interrupted by signals and must be restarted.

// Restart support was added without disturbing the extent of thread

// interruption support.

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, nBytes), os::Solaris::clear_interrupted);

}

inline size_t hpi::write(int fd, const void *buf, unsigned int nBytes) {

  INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::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, flags), os::Solaris::clear_interrupted);

}

inline int    hpi::send(int fd, char *buf, int nBytes, int flags) {

  INTERRUPTIBLE_RETURN_INT(::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);

}

// As both poll and select can be interrupted by signals, we have to be

// prepared to restart the system call after updating the timeout, unless

// a poll() is done with timeout == -1, in which case we repeat with this

// "wait forever" value.

inline int    hpi::timeout(int fd, long timeout) {

  int res;

  struct timeval t;

  julong prevtime, newtime;

  static const char* aNull = 0;

  struct pollfd pfd;

  pfd.fd = fd;

  pfd.events = POLLIN;

  gettimeofday(&t, &aNull);

  prevtime = ((julong)t.tv_sec * 1000)  +  t.tv_usec / 1000;

  for(;;) {

    INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted);

    if(res == OS_ERR && errno == EINTR) {

        if(timeout != -1) {

            gettimeofday(&t, &aNull);

            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) {

  if (fd < 0)

    return OS_ERR;

  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::Solaris::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::Solaris::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) {

  if (fd < 0)

    return OS_ERR;

  INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, (socklen_t*) len), os::Solaris::clear_interrupted);

}

inline int    hpi::recvfrom(int fd, char *buf, int nBytes, int flags,

                            sockaddr *from, int *fromlen) {

  //%%note jvm_r11

  INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen), os::Solaris::clear_interrupted);

}

inline int    hpi::sendto(int fd, char *buf, int len, int flags,

                          struct sockaddr *to, int tolen) {

  //%%note jvm_r11

  INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, (unsigned int) flags, to, tolen),os::Solaris::clear_interrupted);

}

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

  if (fd < 0)

    return OS_OK;

  int ret;

  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;

}

/*

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::Solaris::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

// 1.3 98/10/21 18:17:14 hpi_win32.hpp

// 1.6 99/06/28 11:01:36 hpi_win32.hpp

//End