Examples with Heap com.android.tools.perflib.heap.Heap used on opensource projects

Example 1 with Heap

use of com.android.tools.perflib.heap.Heap in project android by JetBrains.

the class ClassHistogramView method generateClassHistogramFromHeapDumpInfos.

void generateClassHistogramFromHeapDumpInfos(@NotNull MemoryDataCache dataCache, @Nullable HeapDumpInfo mainHeapDumpInfo, @Nullable HeapDumpInfo diffHeapDumpInfo) {
    // TODO make this method asynchronous
    if (myMainHeapDump == null || myMainHeapDump.getInfo() != mainHeapDumpInfo) {
        if (myMainHeapDump != null) {
            myMainHeapDump.dispose();
            myMainHeapDump = null;
        }
        if (mainHeapDumpInfo != null) {
            try {
                myMainHeapDump = new HeapDump(dataCache, mainHeapDumpInfo);
            } catch (IOException exception) {
                getLog().info("Error generating Snapshot from heap dump file.", exception);
                return;
            }
        }
    }
    if (myDiffHeapDump == null || myDiffHeapDump.getInfo() != diffHeapDumpInfo) {
        if (myDiffHeapDump != null) {
            myDiffHeapDump.dispose();
            myDiffHeapDump = null;
        }
        if (diffHeapDumpInfo != null) {
            try {
                myDiffHeapDump = new HeapDump(dataCache, diffHeapDumpInfo);
            } catch (IOException exception) {
                getLog().info("Error generating Snapshot from heap dump file.", exception);
                return;
            }
        }
    }
    HeapDump positiveHeapDump = myDiffHeapDump != null ? myDiffHeapDump : myMainHeapDump;
    HeapDump negativeHeapDump = myDiffHeapDump != null ? myMainHeapDump : null;
    Map<String, Integer> instanceMap = new HashMap<>();
    // Compute the positive delta from the next heap dump
    if (positiveHeapDump != null) {
        for (Heap heap : positiveHeapDump.mySnapshot.getHeaps()) {
            for (ClassObj classObj : heap.getClasses()) {
                String className = classObj.getClassName();
                int instanceCount = classObj.getInstanceCount() + instanceMap.getOrDefault(className, 0);
                instanceMap.put(className, instanceCount);
            }
        }
    }
    // Subtract the negative delta from the main heap dump
    if (negativeHeapDump != null) {
        for (Heap heap : negativeHeapDump.mySnapshot.getHeaps()) {
            for (ClassObj classObj : heap.getClasses()) {
                String className = classObj.getClassName();
                int instanceCount = instanceMap.getOrDefault(className, 0) - classObj.getInstanceCount();
                instanceMap.put(className, instanceCount);
            }
        }
    }
    generateClassHistogram(instanceMap);
}