Initial load

hotspot/src/os/linux/vm/hpi_linux.hpp

@@ -0,0 +1,220 @@
+/*
+ * 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