Initial revision

From-SVN: r26263

libjava/java/io/natFileDescriptorEcos.cc

@@ -0,0 +1,132 @@
+// natFileDescriptor.cc - Native part of FileDescriptor class.
+
+/* Copyright (C) 1998, 1999  Cygnus Solutions
+
+   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 <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+
+#include <cni.h>
+#include <jvm.h>
+#include <java/io/FileDescriptor.h>
+#include <java/io/SyncFailedException.h>
+#include <java/io/IOException.h>
+#include <java/io/EOFException.h>
+#include <java/lang/ArrayIndexOutOfBoundsException.h>
+#include <java/lang/NullPointerException.h>
+#include <java/lang/String.h>
+#include <java/io/FileNotFoundException.h>
+
+extern "C" void diag_write_char (char c);
+
+static void 
+diag_write (char *data, int len)
+{
+  while (len > 0)
+    {
+      diag_write_char (*data++);
+      len--;
+    }
+}
+
+#define NO_FSYNC_MESSAGE "sync unsupported"
+
+jboolean
+java::io::FileDescriptor::valid (void)
+{
+  return true;
+}
+
+void
+java::io::FileDescriptor::sync (void)
+{
+  // Some files don't support fsync.  We don't bother reporting these
+  // as errors.
+#ifdef HAVE_FSYNC
+#else
+  JvThrow (new SyncFailedException (JvNewStringLatin1 (NO_FSYNC_MESSAGE)));
+#endif
+}
+
+jint
+java::io::FileDescriptor::open (jstring path, jint jflags)
+{
+  return fd;
+}
+
+void
+java::io::FileDescriptor::write (jint b)
+{
+  char d = (char) b;
+  ::diag_write (&d, 1);
+}
+
+void
+java::io::FileDescriptor::write (jbyteArray b, jint offset, jint len)
+{
+  if (! b)
+    JvThrow (new java::lang::NullPointerException);
+  if (offset < 0 || len < 0 || offset + len > JvGetArrayLength (b))
+    JvThrow (new java::lang::ArrayIndexOutOfBoundsException);
+  char *bytes = (char *)elements (b) + offset;
+  ::diag_write (bytes, len);
+}
+
+void
+java::io::FileDescriptor::close (void)
+{
+}
+
+jint
+java::io::FileDescriptor::seek (jlong pos, jint whence)
+{
+  JvAssert (whence == SET || whence == CUR);
+
+  jlong len = length ();
+  jlong here = getFilePointer ();
+
+  if ((whence == SET && pos > len) || (whence == CUR && here + pos > len))
+    JvThrow (new EOFException);
+
+  return 0;
+}
+
+jlong
+java::io::FileDescriptor::length (void)
+{
+  return 0;
+}
+
+jlong
+java::io::FileDescriptor::getFilePointer (void)
+{
+  return 0;
+}
+
+jint
+java::io::FileDescriptor::read (void)
+{
+  return 0;
+}
+
+jint
+java::io::FileDescriptor::read (jbyteArray buffer, jint offset, jint count)
+{
+  return 0;
+}
+
+jint
+java::io::FileDescriptor::available (void)
+{
+  return 0;
+}