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1 /* |
1 /* |
2 * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
5 * This code is free software; you can redistribute it and/or modify it |
6 * under the terms of the GNU General Public License version 2 only, as |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. Oracle designates this |
7 * published by the Free Software Foundation. Oracle designates this |
268 * recording can be set to true/false with {@link #beginRecording()} |
268 * recording can be set to true/false with {@link #beginRecording()} |
269 * {@link #endRecording()} |
269 * {@link #endRecording()} |
270 * |
270 * |
271 * @param file the file where data should be written, or null if it should |
271 * @param file the file where data should be written, or null if it should |
272 * not be copied out (in memory). |
272 * not be copied out (in memory). |
273 * |
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274 * @throws IOException |
273 * @throws IOException |
275 */ |
274 */ |
276 public native void setOutput(String file); |
275 public native void setOutput(String file); |
277 |
276 |
278 /** |
277 /** |
457 /** |
456 /** |
458 * Flushes the EventWriter for this thread. |
457 * Flushes the EventWriter for this thread. |
459 */ |
458 */ |
460 public static native boolean flush(EventWriter writer, int uncommittedSize, int requestedSize); |
459 public static native boolean flush(EventWriter writer, int uncommittedSize, int requestedSize); |
461 |
460 |
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461 /** |
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462 * Flushes all thread buffers to disk and the constant pool data needed to read |
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463 * them. |
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464 * <p> |
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465 * When the method returns, the chunk header should be updated with valid |
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466 * pointers to the metadata event, last check point event, correct file size and |
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467 * the generation id. |
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468 * |
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469 * @param includeMetadata {@code true} if metadata event should be written, {@code false} |
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470 * otherwise |
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471 * @param flushCounter the (flushCounter + 1= should be written to the chunk header, by default the |
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472 * value in the chunk header should be {@code 1} and set {@code 0} once the chunk is complete. |
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473 */ |
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474 public native void flush(boolean includeMetadata, short flushCounter); |
462 /** |
475 /** |
463 * Sets the location of the disk repository, to be used at an emergency |
476 * Sets the location of the disk repository, to be used at an emergency |
464 * dump. |
477 * dump. |
465 * |
478 * |
466 * @param dirText |
479 * @param dirText |
521 * Test if a chunk rotation is warranted. |
534 * Test if a chunk rotation is warranted. |
522 * |
535 * |
523 * @return if it is time to perform a chunk rotation |
536 * @return if it is time to perform a chunk rotation |
524 */ |
537 */ |
525 public native boolean shouldRotateDisk(); |
538 public native boolean shouldRotateDisk(); |
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539 |
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540 /** |
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541 * Exclude a thread from the jfr system |
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542 * |
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543 */ |
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544 public native void exclude(Thread thread); |
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545 |
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546 /** |
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547 * Include a thread back into the jfr system |
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548 * |
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549 */ |
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550 public native void include(Thread thread); |
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551 |
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552 /** |
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553 * Test if a thread ius currently excluded from the jfr system. |
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554 * |
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555 * @return is thread currently excluded |
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556 */ |
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557 public native boolean isExcluded(Thread thread); |
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558 |
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559 /** |
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560 * Get the start time in nanos from the header of the current chunk |
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561 * |
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562 *@return start time of the recording in nanos, -1 in case of in-memory |
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563 */ |
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564 public native long getChunkStartNanos(); |
526 } |
565 } |