8215284: Reduce noise induced by periodic task getFileSize()

Reviewed-by: redestad, egahlin

src/share/classes/jdk/jfr/internal/JVM.java

@@ -517,4 +517,11 @@ public final class JVM {
      * @param emitAll emit all samples in old object queue
      */
     public native void emitOldObjectSamples(long cutoff, boolean emitAll);
+
+    /**
+     * Test if a chunk rotation is warranted.
+     *
+     * @return if it is time to perform a chunk rotation
+     */
+    public native boolean shouldRotateDisk();
 }

src/share/classes/jdk/jfr/internal/PlatformRecorder.java

@@ -428,20 +428,14 @@ public final class PlatformRecorder {
     }
 
     private void periodicTask() {
-        while (true) {
-            synchronized (this) {
         if (!jvm.hasNativeJFR()) {
             return;
         }
-                if (currentChunk != null) {
-                    try {
-                        if (SecuritySupport.getFileSize(currentChunk.getUnfishedFile()) > Options.getMaxChunkSize()) {
+        while (true) {
+            synchronized (this) {
+                if (jvm.shouldRotateDisk()) {
                     rotateDisk();
                 }
-                    } catch (IOException e) {
-                        Logger.log(JFR_SYSTEM, WARN, "Could not check file size to determine chunk rotation");
-                    }
-                }
             }
             long minDelta = RequestEngine.doPeriodic();
             long wait = Math.min(minDelta, Options.getWaitInterval());