From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified
 gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream
 tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
---
 libjava/gnu/java/nio/natVMSelectorPosix.cc | 127 +++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 libjava/gnu/java/nio/natVMSelectorPosix.cc

(limited to 'libjava/gnu/java/nio/natVMSelectorPosix.cc')

diff --git a/libjava/gnu/java/nio/natVMSelectorPosix.cc b/libjava/gnu/java/nio/natVMSelectorPosix.cc
new file mode 100644
index 000000000..9f026792a
--- /dev/null
+++ b/libjava/gnu/java/nio/natVMSelectorPosix.cc
@@ -0,0 +1,127 @@
+// natVMSelectorImplPosix.cc
+
+/* Copyright (C) 2002, 2003, 2004, 2007  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#include <config.h>
+#include <platform.h>
+
+#include <errno.h>
+#include <string.h>
+
+#include <gnu/java/nio/VMSelector.h>
+#include <java/io/InterruptedIOException.h>
+#include <java/io/IOException.h>
+#include <java/lang/Thread.h>
+
+static void
+helper_put_filedescriptors (jintArray fdArray, fd_set& fds, int& max_fd)
+{
+  jint* tmpFDArray = elements (fdArray);
+
+  for (int index = 0; index < JvGetArrayLength (fdArray); index++)
+    {
+      int fd = tmpFDArray [index];
+      if (fd > 0)
+        {
+          FD_SET (tmpFDArray [index], &fds);
+
+          if (tmpFDArray [index] > max_fd)
+            max_fd = tmpFDArray [index];
+        }
+    }
+}
+
+static void
+helper_get_filedescriptors (jintArray& fdArray, fd_set fds)
+{
+  jint* tmpFDArray = elements (fdArray);
+  
+  for (int index = 0; index < JvGetArrayLength (fdArray); index++)
+    {
+      int fd = tmpFDArray [index];
+      if (fd < 0 || !FD_ISSET (fd, &fds))
+        tmpFDArray [index] = 0;
+    }
+}
+
+static void
+helper_reset (jintArray& fdArray)
+{
+  jint* tmpFDArray = elements (fdArray);
+  
+  for (int index = 0; index < JvGetArrayLength (fdArray); index++)
+    tmpFDArray [index] = 0;
+}
+
+jint
+gnu::java::nio::VMSelector::select (jintArray read, jintArray write,
+                                    jintArray except, jlong timeout)
+{
+  jint result;
+  int max_fd = 0;
+  fd_set read_fds;
+  fd_set write_fds;
+  fd_set except_fds;
+  struct timeval real_time_data;
+  struct timeval *time_data = NULL;
+
+  // If a legal timeout value isn't given, use NULL.
+  // This means an infinite timeout. The specification
+  // also says that a zero timeout should be treated
+  // as infinite. Otherwise (if the timeout value is legal),
+  // fill our timeval struct and use it for the select.
+  if (timeout > 0)
+    {
+      real_time_data.tv_sec = timeout / 1000;
+      real_time_data.tv_usec = (timeout % 1000) * 1000;
+      time_data = &real_time_data;
+    }
+
+  // Reset all fd_set structures
+  FD_ZERO (&read_fds);
+  FD_ZERO (&write_fds);
+  FD_ZERO (&except_fds);
+
+  // Fill the fd_set data structures for the _Jv_select() call.
+  helper_put_filedescriptors (read, read_fds, max_fd);
+  helper_put_filedescriptors (write, write_fds, max_fd);
+  helper_put_filedescriptors (except, except_fds, max_fd);
+
+  // Actually do the select
+  try
+    {
+      result = _Jv_select (max_fd + 1, &read_fds, &write_fds,
+                           &except_fds, time_data);
+    }
+  catch (::java::io::InterruptedIOException *e)
+    {
+      // The behavior of JRE 1.4.1 is that no exception is thrown
+      // when the thread is interrupted, but the thread's interrupt
+      // status is set. Clear all of our select sets and return 0,
+      // indicating that nothing was selected.
+      ::java::lang::Thread::currentThread ()->interrupt ();
+       helper_reset (read);
+       helper_reset (write);
+       helper_reset (except);
+       return 0;
+    }
+
+  if (result < 0)
+    {
+      char* strerr = strerror (errno);
+      throw new ::java::io::IOException (JvNewStringUTF (strerr));
+    }
+
+  // Set the file descriptors according to the values returned from select().
+  helper_get_filedescriptors (read, read_fds);
+  helper_get_filedescriptors (write, write_fds);
+  helper_get_filedescriptors (except, except_fds);
+
+  return result;
+}
-- 
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