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 /*

  * Copyright (c) 1998, 2010, 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_SOLARIS_VM_HPI_SOLARIS_HPP

 #define OS_SOLARIS_VM_HPI_SOLARIS_HPP

 //

 // 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);

 }

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

   RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));

 }

 // 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

 #endif // OS_SOLARIS_VM_HPI_SOLARIS_HPP