8191872: (fs) UnixNativeDispatcher conditionally compiles in support for high precision timestamps

Remove POSIX conditional compilation and correct stat64 times for macOS

Reviewed-by: alanb, simonis

src/java.base/unix/native/libnio/fs/UnixNativeDispatcher.c

 /*
- * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2017, 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
@@ -476,10 +476,14 @@ static void prepAttributes(JNIEnv* env, struct stat64* buf, jobject attrs) {
     (*env)->SetLongField(env, attrs, attrs_st_birthtime_sec, (jlong)buf->st_birthtime);
 #endif
 
-#if (_POSIX_C_SOURCE >= 200809L) || defined(__solaris__)
+#ifndef MACOSX
     (*env)->SetLongField(env, attrs, attrs_st_atime_nsec, (jlong)buf->st_atim.tv_nsec);
     (*env)->SetLongField(env, attrs, attrs_st_mtime_nsec, (jlong)buf->st_mtim.tv_nsec);
     (*env)->SetLongField(env, attrs, attrs_st_ctime_nsec, (jlong)buf->st_ctim.tv_nsec);
+#else
+    (*env)->SetLongField(env, attrs, attrs_st_atime_nsec, (jlong)buf->st_atimespec.tv_nsec);
+    (*env)->SetLongField(env, attrs, attrs_st_mtime_nsec, (jlong)buf->st_mtimespec.tv_nsec);
+    (*env)->SetLongField(env, attrs, attrs_st_ctime_nsec, (jlong)buf->st_ctimespec.tv_nsec);
 #endif
 }
 

test/jdk/java/nio/file/Files/SetLastModifiedTime.java

 /*
- * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2017 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
@@ -21,6 +21,7 @@
  * questions.
  */
 
+import java.io.File;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -36,7 +37,7 @@ import static org.testng.Assert.assertFalse;
 
 /**
  * @test
- * @bug 4313887 8062949
+ * @bug 4313887 8062949 8191872
  * @library ..
  * @run testng SetLastModifiedTime
  * @summary Unit test for Files.setLastModifiedTime
@@ -114,5 +115,20 @@ public class SetLastModifiedTime {
             assertTrue(false);
         } catch (NullPointerException expected) { }
     }
+
+    @Test
+    public void testCompare() throws Exception {
+        Path path = Files.createFile(testDir.resolve("path"));
+        long timeMillis = 1512520600195L;
+        FileTime fileTime = FileTime.fromMillis(timeMillis);
+        Files.setLastModifiedTime(path, fileTime);
+        File file = path.toFile();
+        long ioTime = file.lastModified();
+        long nioTime = Files.getLastModifiedTime(path).toMillis();
+        assertTrue(ioTime == timeMillis || ioTime == 1000*(timeMillis/1000),
+            "File.lastModified() not in {time, 1000*(time/1000)}");
+        assertEquals(nioTime, ioTime,
+            "File.lastModified() != Files.getLastModifiedTime().toMillis()");
+    }
 }