Abstract: Provided are a pulse signal output circuit (50) and a flowmeter (11). The pulse signal output circuit (50) includes a signal-receiving module (21), a photoelectrical coupler (22), a signal conversion module (23); where the signal-receiving module (21) is connected to the photoelectrical coupler (22), and the photoelectrical coupler (22) is connected to the signal conversion module (23); the signal-receiving module (21) is configured to receive a source pulse signal acquired by the flowmeter (11), and send the source pulse signal to the photoelectrical coupler (22); the photoelectrical coupler (22) is configured to perform electrical-optical-electrical conversion processing on the received source pulse signal to obtain an electrical signal, and send the electrical signal to the signal conversion module (23); the signal conversion module (23) is configured to perform conversion processing on the received electrical signal to obtain and output an output pulse signal (41) corresponding to the source pulse signal.

Abstract: A circuit power supply management method and system for a flowmeter, and a flowmeter. The method includes: obtaining an intermittent circuit with a highest priority in an application list as a circuit to be run; obtaining a first priority and a first power of the circuit to be run; obtaining a currently available second power, and running the circuit to be run if the second power is greater than or equal to the first power, or obtaining, from a running queue, a third power with a priority lower than a priority of the circuit to be run; running the circuit to be run if a sum of the second power and the third power is greater than or equal to the first power, or if the sum of the second power and the third power is less than the first power, obtaining, from the application list, an intermittent circuit with a priority lower than the priority of the circuit to be run, as the circuit to be run and performing the step of obtaining the first priority and the first power of the circuit to be run.

Abstract: A method for data chunk partitioning in XML parsing and a method for XML parsing are disclosed in the invention, the method for data chunk partitioning in XML parsing includes: partitioning an XML file into multiple XML data segments, and allocating the multiple XML data segments to multiple threads for parallel processing; determining a candidate boundary start symbol in the XML data segment; determining a boundary symbol type of the candidate boundary start symbol, and recording the boundary symbol type and a position of the candidate boundary start symbol; determining a valid boundary start symbol; partitioning the XML file into multiple data chunks by taking the valid boundary start symbol as a boundary. With the method, the integrity of the XML elements in each data chunk can be ensured, and thus effectively improving the efficiency of XML data parsing.

Abstract: Embodiments of techniques and systems for parallel XML parsing are described. An event-level XML parser may include a lightweight events partitioning stage, parallel events parsing stages, and a post-processing stage. The events partition may pick out event boundaries using single-instruction, multiple-data instructions to find occurrences of the “<” character, marking event boundaries. Subsequent checking may be performed to help identify other event boundaries, as well as non-boundary instances of the “<” character. During events parsing, unresolved items, such as namespace resolution or matching of start and end elements, may be recorded in structure metadata. This structure metadata may be used during the subsequent post-processing to perform a check of the XML data. If the XML data is well-formed, individual sub-event streams formed by the events parsing processes may be assembled into a flat result event stream structure. Other embodiments may be described and claimed.

Abstract: A method for data chunk partitioning in XML parsing and a method for XML parsing are disclosed in the invention, the method for data chunk partitioning in XML parsing includes: partitioning an XML file into multiple XML data segments, and allocating the multiple XML data segments to multiple threads for parallel processing; determining a candidate boundary start symbol in the XML data segment; determining a boundary symbol type of the candidate boundary start symbol, and recording the boundary symbol type and a position of the candidate boundary start symbol; determining a valid boundary start symbol; partitioning the XML file into multiple data chunks by taking the valid boundary start symbol as a boundary. With the method, the integrity of the XML elements in each data chunk can be ensured, and thus effectively improving the efficiency of XML data parsing.

Abstract: Embodiments of techniques and systems for parallel XML parsing are described. An event-level XML parser may include a lightweight events partitioning stage, parallel events parsing stages, and a post-processing stage. The events partition may pick out event boundaries using single-instruction, multiple-data instructions to find occurrences of the “<” character, marking event boundaries. Subsequent checking may be performed to help identify other event boundaries, as well as non-boundary instances of the “<” character. During events parsing, unresolved items, such as namespace resolution or matching of start and end elements, may be recorded in structure metadata. This structure metadata may be used during the subsequent post-processing to perform a check of the XML data. If the XML data is well-formed, individual sub-event streams formed by the events parsing processes may be assembled into a flat result event stream structure. Other embodiments may be described and claimed.