/**
* Walk all objects in the heap in a single threaded linear fashion.
*/
void
MM_HeapWalker::allObjectsDo(MM_EnvironmentBase *env, MM_HeapWalkerObjectFunc function, void *userData, uintptr_t walkFlags, bool parallel, bool prepareHeapForWalk)
{
uintptr_t typeFlags = 0;
GC_OMRVMInterface::flushCachesForWalk(env->getOmrVM());
if (walkFlags & J9_MU_WALK_NEW_AND_REMEMBERED_ONLY) {
typeFlags |= MEMORY_TYPE_NEW;
}
MM_GCExtensionsBase *extensions = env->getExtensions();
MM_HeapRegionManager *regionManager = extensions->heap->getHeapRegionManager();
GC_HeapRegionIterator regionIterator(regionManager);
MM_HeapRegionDescriptor *region = NULL;
OMR_VMThread *omrVMThread = env->getOmrVMThread();
while (NULL != (region = regionIterator.nextRegion())) {
if (typeFlags == (region->getTypeFlags() & typeFlags)) {
/* Optimization to avoid virtual dispatch for every slot in the system */
omrobjectptr_t object = NULL;
GC_ObjectHeapIteratorAddressOrderedList liveObjectIterator(extensions, region, false);
while (NULL != (object = liveObjectIterator.nextObject())) {
function(omrVMThread, region, object, userData);
}
}
}
}
