Examples with StackTrace net.openhft.chronicle.core.StackTrace used on opensource projects

Example 1 with StackTrace

use of net.openhft.chronicle.core.StackTrace in project Chronicle-Queue by OpenHFT.

the class TableStoreWriteLock method lock.

/**
 * Guaranteed to succeed in getting the lock (may involve timeout and recovery) or else throw.
 * <p>This is not re-entrant i.e. if you lock and try and lock again it will timeout and recover
 */
@Override
public void lock() {
    throwExceptionIfClosed();
    assert checkNotAlreadyLocked();
    long currentLockValue = 0;
    TimingPauser tlPauser = pauser.get();
    try {
        currentLockValue = lock.getVolatileValue();
        while (!lock.compareAndSwapValue(UNLOCKED, PID)) {
            if (Thread.currentThread().isInterrupted())
                throw new InterruptedRuntimeException("Interrupted for the lock file:" + path);
            tlPauser.pause(timeout, TimeUnit.MILLISECONDS);
            currentLockValue = lock.getVolatileValue();
        }
        // noinspection ConstantConditions,AssertWithSideEffects
        assert (lockedByThread = Thread.currentThread()) != null && (lockedHere = new StackTrace()) != null;
    // success
    } catch (TimeoutException e) {
        final String lockedBy = getLockedBy(currentLockValue);
        final String warningMsg = "Couldn't acquire write lock " + "after " + timeout + " ms " + "for the lock file:" + path + ". " + "Lock was held by " + lockedBy;
        if (forceUnlockOnTimeoutWhen == UnlockMode.NEVER)
            throw new UnrecoverableTimeoutException(new IllegalStateException(warningMsg + UNLOCK_MAIN_MSG));
        else if (forceUnlockOnTimeoutWhen == UnlockMode.LOCKING_PROCESS_DEAD) {
            if (forceUnlockIfProcessIsDead())
                lock();
            else
                throw new UnrecoverableTimeoutException(new IllegalStateException(warningMsg + UNLOCK_MAIN_MSG));
        } else {
            warn().on(getClass(), warningMsg + UNLOCKING_FORCIBLY_MSG);
            forceUnlock(currentLockValue);
            lock();
        }
    } finally {
        tlPauser.reset();
    }
}

Example 2 with StackTrace

use of net.openhft.chronicle.core.StackTrace in project Chronicle-Queue by OpenHFT.

the class AbstractTSQueueLock method forceUnlock.

/**
 * will only force unlock if you give it the correct pid
 */
protected void forceUnlock(long value) {
    boolean unlocked = lock.compareAndSwapValue(value, UNLOCKED);
    Jvm.warn().on(getClass(), "" + "Forced unlock for the " + "lock file:" + path + ", " + "lockKey: " + lockKey + ", " + "unlocked: " + unlocked, new StackTrace("Forced unlock"));
}

Example 3 with StackTrace

use of net.openhft.chronicle.core.StackTrace in project Chronicle-Queue by OpenHFT.

the class SingleTableStore method doWithLock.

// shared vs exclusive - see https://docs.oracle.com/javase/7/docs/api/java/nio/channels/FileChannel.html
private static <T, R> R doWithLock(@NotNull final File file, @NotNull final Function<T, ? extends R> code, @NotNull final Supplier<T> target, final boolean shared) {
    final String type = shared ? "shared" : "exclusive";
    final StandardOpenOption readOrWrite = shared ? StandardOpenOption.READ : StandardOpenOption.WRITE;
    final long timeoutAt = System.currentTimeMillis() + timeoutMS;
    final long startMs = System.currentTimeMillis();
    try (final FileChannel channel = FileChannel.open(file.toPath(), readOrWrite)) {
        for (int count = 1; System.currentTimeMillis() < timeoutAt; count++) {
            try (FileLock fileLock = channel.tryLock(EXCLUSIVE_LOCK_START, EXCLUSIVE_LOCK_SIZE, shared)) {
                if (fileLock != null) {
                    return code.apply(target.get());
                }
            } catch (IOException | OverlappingFileLockException e) {
                // failed to acquire the lock, wait until other operation completes
                if (count > 9) {
                    if (Jvm.isDebugEnabled(SingleTableStore.class)) {
                        final long elapsedMs = System.currentTimeMillis() - startMs;
                        final String message = "Failed to acquire " + type + " lock on the table store file. Retrying, file=" + file.getAbsolutePath() + ", count=" + count + ", elapsed=" + elapsedMs + " ms";
                        Jvm.debug().on(SingleTableStore.class, "", new StackTrace(message));
                    }
                }
            }
            int delay = Math.min(250, count * count);
            sleep(delay, MILLISECONDS);
        }
    } catch (IOException e) {
        throw new IllegalStateException("Couldn't perform operation with " + type + " file lock", e);
    }
    throw new IllegalStateException("Unable to claim exclusive " + type + " lock on file " + file);
}

Example 4 with StackTrace

use of net.openhft.chronicle.core.StackTrace in project Chronicle-Queue by OpenHFT.

the class SCQIndexing method printLinearScanTime.

private boolean printLinearScanTime(long toIndex, long fromKnownIndex, long start, long end, String desc) {
    StackTrace st = null;
    if (Jvm.isDebugEnabled(getClass())) {
        int time = Jvm.isArm() ? 20_000_000 : 250_000;
        // ignore the time for the first message
        if (toIndex > 0 && end > start + time)
            st = new StackTrace("This is a profile stack trace, not an ERROR");
    }
    long tookUS = (end - start) / 1000;
    Jvm.perf().on(getClass(), "Took " + tookUS + " us to " + desc + " from " + fromKnownIndex + " to " + toIndex + " = (0x" + Long.toHexString(toIndex) + "-0x" + Long.toHexString(fromKnownIndex) + ")=" + (toIndex - fromKnownIndex), st);
    return true;
}