8033911: Simplify instrumentation of FileInputStream and RandomAccessFile

Reviewed-by: alanb, dsamersoff, jbachorik

make/mapfiles/libjava/mapfile-vers

@@ -79,7 +79,7 @@ SUNWprivate_1.1 {
 		Java_java_io_FileInputStream_close0;
 		Java_java_io_FileInputStream_initIDs;
 		Java_java_io_FileInputStream_open;
-		Java_java_io_FileInputStream_read;
+		Java_java_io_FileInputStream_read0;
 		Java_java_io_FileInputStream_readBytes;
 		Java_java_io_FileInputStream_skip;
 		Java_java_io_FileOutputStream_close0;
@@ -98,11 +98,11 @@ SUNWprivate_1.1 {
 		Java_java_io_RandomAccessFile_initIDs;
 		Java_java_io_RandomAccessFile_length;
 		Java_java_io_RandomAccessFile_open;
-		Java_java_io_RandomAccessFile_read;
+		Java_java_io_RandomAccessFile_read0;
 		Java_java_io_RandomAccessFile_readBytes;
 		Java_java_io_RandomAccessFile_seek0;
 		Java_java_io_RandomAccessFile_setLength;
-		Java_java_io_RandomAccessFile_write;
+		Java_java_io_RandomAccessFile_write0;
 		Java_java_io_RandomAccessFile_writeBytes;
 		Java_java_io_UnixFileSystem_canonicalize0;
 		Java_java_io_UnixFileSystem_checkAccess;

src/share/classes/java/io/FileInputStream.java

@@ -186,7 +186,11 @@ class FileInputStream extends InputStream
      *             file is reached.
      * @exception  IOException  if an I/O error occurs.
      */
-    public native int read() throws IOException;
+    public int read() throws IOException {
+        return read0();
+    }
+
+    private native int read0() throws IOException;
 
     /**
      * Reads a subarray as a sequence of bytes.

src/share/classes/java/io/RandomAccessFile.java

@@ -309,7 +309,11 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
      * @exception  IOException  if an I/O error occurs. Not thrown if
      *                          end-of-file has been reached.
      */
-    public native int read() throws IOException;
+    public int read() throws IOException {
+        return read0();
+    }
+
+    private native int read0() throws IOException;
 
     /**
      * Reads a sub array as a sequence of bytes.
@@ -457,7 +461,11 @@ public class RandomAccessFile implements DataOutput, DataInput, Closeable {
      * @param      b   the {@code byte} to be written.
      * @exception  IOException  if an I/O error occurs.
      */
-    public native void write(int b) throws IOException;
+    public void write(int b) throws IOException {
+        write0(b);
+    }
+
+    private native void write0(int b) throws IOException;
 
     /**
      * Writes a sub array as a sequence of bytes.

src/share/native/java/io/FileInputStream.c

@@ -62,7 +62,7 @@ Java_java_io_FileInputStream_open(JNIEnv *env, jobject this, jstring path) {
 }
 
 JNIEXPORT jint JNICALL
-Java_java_io_FileInputStream_read(JNIEnv *env, jobject this) {
+Java_java_io_FileInputStream_read0(JNIEnv *env, jobject this) {
     return readSingle(env, this, fis_fd);
 }
 

src/share/native/java/io/RandomAccessFile.c

@@ -64,7 +64,7 @@ Java_java_io_RandomAccessFile_open(JNIEnv *env,
 }
 
 JNIEXPORT jint JNICALL
-Java_java_io_RandomAccessFile_read(JNIEnv *env, jobject this) {
+Java_java_io_RandomAccessFile_read0(JNIEnv *env, jobject this) {
     return readSingle(env, this, raf_fd);
 }
 
@@ -75,7 +75,7 @@ Java_java_io_RandomAccessFile_readBytes(JNIEnv *env,
 }
 
 JNIEXPORT void JNICALL
-Java_java_io_RandomAccessFile_write(JNIEnv *env, jobject this, jint byte) {
+Java_java_io_RandomAccessFile_write0(JNIEnv *env, jobject this, jint byte) {
     writeSingle(env, this, byte, JNI_FALSE, raf_fd);
 }