CFDataRef Monitor::receive_request(CFMessagePortRef local, SInt32 msgid, CFDataRef data, void *info) {
Monitor *monitor = (Monitor *)info;
CFIndex length = CFDataGetLength(data);
memcpy(monitor->_request, CFDataGetBytePtr(data), length);
CFDataRef reply = monitor->_response_buffer = CFDataCreateMutable(kCFAllocatorMallocZone, 0);
// sample the stack.
monitor->_stack_bottom = (void*) auto_get_sp();
// scan args
monitor->tokenize_args();
// prevent the collector from collecting until we've processed the request.
Zone *zone = Zone::zone();
if (zone) zone->block_collector();
// process request generating report
monitor->process_request();
// unblock the collector.
if (zone) zone->unblock_collector();
// return the response.
CFDataAppendBytes(monitor->_response_buffer, (const UInt8*)"\0", 1);
monitor->_response_buffer = NULL;
return reply;
}
