Import lttng.kernel.core plugins from Scope

[deliverable/tracecompass.git] / lttng / org.lttng.scope.lttng.kernel.core / src / org / lttng / scope / lttng / kernel / core / analysis / os / handlers / internal / IrqExitHandler.java

diff --git a/lttng/org.lttng.scope.lttng.kernel.core/src/org/lttng/scope/lttng/kernel/core/analysis/os/handlers/internal/IrqExitHandler.java b/lttng/org.lttng.scope.lttng.kernel.core/src/org/lttng/scope/lttng/kernel/core/analysis/os/handlers/internal/IrqExitHandler.java
new file mode 100644 (file)
index 0000000..5f55052
--- /dev/null
+++ b/lttng/org.lttng.scope.lttng.kernel.core/src/org/lttng/scope/lttng/kernel/core/analysis/os/handlers/internal/IrqExitHandler.java
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Ericsson
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Matthew Khouzam - Initial API and implementation
+ *******************************************************************************/
+
+package org.lttng.scope.lttng.kernel.core.analysis.os.handlers.internal;
+
+import org.eclipse.tracecompass.tmf.core.event.ITmfEvent;
+import org.lttng.scope.lttng.kernel.core.trace.layout.ILttngKernelEventLayout;
+
+import ca.polymtl.dorsal.libdelorean.ITmfStateSystemBuilder;
+import ca.polymtl.dorsal.libdelorean.exceptions.AttributeNotFoundException;
+import ca.polymtl.dorsal.libdelorean.statevalue.TmfStateValue;
+
+/**
+ * Irq Exit handler
+ */
+public class IrqExitHandler extends KernelEventHandler {
+
+    /**
+     * Constructor
+     *
+     * @param layout
+     *            event layout
+     */
+    public IrqExitHandler(ILttngKernelEventLayout layout) {
+        super(layout);
+    }
+
+    @Override
+    public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException {
+        Integer cpu = KernelEventHandlerUtils.getCpu(event);
+        if (cpu == null) {
+            return;
+        }
+        int currentThreadNode = KernelEventHandlerUtils.getCurrentThreadNode(cpu, ss);
+        Integer irqId = ((Long) event.getContent().getField(getLayout().fieldIrq()).getValue()).intValue();
+        /* Put this IRQ back to inactive in the resource tree */
+        int quark = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeIRQs(cpu, ss), irqId.toString());
+        TmfStateValue value = TmfStateValue.nullValue();
+        long timestamp = KernelEventHandlerUtils.getTimestamp(event);
+        ss.modifyAttribute(timestamp, value, quark);
+
+        /* Set the previous process back to running */
+        KernelEventHandlerUtils.setProcessToRunning(timestamp, currentThreadNode, ss);
+
+        /* Set the CPU status back to running or "idle" */
+        KernelEventHandlerUtils.cpuExitInterrupt(timestamp, cpu, ss);
+    }
+}