44 results about "Multi threaded programming" patented technology

The invention provides a multi-thread parallel processing method based on a multi-thread programming and a message queue, belonging to the field of high-performance computation of a computer. The parallelization of traditional single-thread serial software is modified, and current modern multi-core CPU (Central Processing Unit) computation equipment, a pthread multi-thread parallel computing technology and a technology for realizing in-thread communication of the message queue are utilized. The method comprises the following steps of: in a single node, establishing three types of pthread threads including a reading thread, a computing thread and a writing thread, wherein the quantity of each type of the threads is flexible and configurable; exploring multi-buffering and establishing four queues for the in-thread communication; and allocating a computing task and managing a buffering space resource. The method is widely applied to the application field with multi-thread parallel processing requirements; a software developer is guided to carry out multi-thread modification on existing software so as to realize the optimization of the utilization of a system resource; and the hardware resource utilization rate is obviously improved, and the computation efficiency of software and the whole performance of the software are improved.

The invention discloses a medical-image-oriented multi-thread parallel computing method, and relates to a medical image processing method, in particular to an image processing and optimizing method for applying a multi-thread thought and a programming method to medical images. On a processor supporting hyper threading or a multi-core technology, multi-thread programming is performed by using hardware resources on the processor by means of software. The method comprises the following steps: partitioning a medical image needing to be processed into image blocks which can be processed independently and grouping the image blocks; simultaneously running a plurality of threads in different kernels of different processors at the same moment by using a multi-thread technology; enabling each thread to execute image block groups with relatively average workload from an original image respectively and to carry out parallel processing on an original image processing task set till all threads finish processing; and summarizing processing results, and outputting. Through the overall multi-thread parallel computation, the execution efficiency of image processing can be increased, and the aim of accelerating computation is fulfilled.

The invention relates to the technical field of heartbeat packet control and especially relates to a heartbeat packet asynchronous control method and apparatus. The heartbeat packet asynchronous control method comprises the following steps: step A, performing server socket communication parameter initialization and server communication model initialization, and establishing a monitoring socket descriptor; step B, establishing and initializing a server dynamic list; step C, initializing and starting a system timer controlling a heartbeat packet; and step D, invoking a monitoring function, determining whether a client communication event is triggered, if so, a server main program exiting from the monitoring function, and the server traversing and processing the communication event, and if not, continuously waiting until the client communication event is triggered. According to the invention, by use of an Epoll server model of a linux system, the method and apparatus are simple, reliable and highly efficient, the problems of multithread programming and protocol complexity are overcome, system memory resources are fully utilized, heartbeat packet data is efficiently processed.

The invention relates to a multimodal medical image registration and visualization method. Based on FLTK, VTK, and IRTK technologies, the method provides a friendly operation interface and visualization functions, simplifies the complex algorithm parameter configuration process, facilitates registration operations, and realizes multi-modal medical image registration; provides image denoising preprocessing to Improve image quality and reduce the impact of noise on registration accuracy; in the case of large coordinate position differences between the target image and the source image, a point set registration method is provided to complete the coarse registration of the coordinate position, which provides a basis for subsequent rigid, affine and nonlinear registration. Accurate implementation for initialization; support cascade working mode of multiple registration methods to improve registration efficiency; use multi-threaded programming technology to realize real-time dynamic display of the registration process, which is convenient for understanding and monitoring the registration process; registration The result is automatically output and saved; using the transformation matrix of the registration result and adding a smooth limit item, the function of diffeomorphism transformation and fast segmentation can be realized.

The invention provides a novel mobile robot for picking strawberries. The robot comprises a bottom plate, a manipulator, a sensor assembly, a limit switch assembly, a walking mechanism, a power mechanism, a control system, an electromagnetic valve, an air pumping device, and an air storage tank; the manipulator comprises an arm assembly, a hand claw assembly and an electric and pneumatic cutting handle assembly, the arm assembly is installed on the bottom plate, and the hand claw assembly is installed on the arm assembly; and the control system is electrically connected with the sensor assembly, the limit switch assembly and the power mechanism, the control method adopts multithreaded programming, strawberry picking programs are downloaded to ''1+2'' mode coupled ROBO controllers through USB serial ports, and the control system controls the power mechanism to control action and positions of the manipulator and the sensor assembly. The robot provided by the invention can realize automatic perception and identification analysis of strawberries, and accurately picks the ripe strawberries

According to the present invention, a molding cavity information online detection apparatus during an injection molding process is designed and manufactured, wherein the thermal change condition and the mechanical change condition of a plastic melt in a mold molding cavity, the filling mode information and the micro-shape evolution behavior are respectively detected by comprehensively utilizing a traditional sensor detection method, a visualized observation method and an ultrasonic wave detection method; in the detection apparatus, the plastic mold is designed into the mold structure having a lateral parting pulling core while a data acquisition system is developed by simultaneously using a multimedia timer technology and a multi-threaded programming technology; and the experimental results show that the designed mold is safe and reliable, the detection apparatus can obtain the temperature information and the pressure information of the plastic melt during the molding, the filling mode image and the crystal form forming and evolution behavior, and the complete visualization of the injection molding process under the real processing condition is achieved.

A method and system to reduce thrashing in a multi-threaded programming environment is disclosed. A method in accordance with one embodiment of the present invention includes intercepting an operating system thread creation request for a function, creating a thread including a stack in response to intercepting the operating system thread creation request, modifying an initial stack pointer of the stack, and executing the function utilizing the thread in response to modifying the initial stack pointer.

The invention discloses upper computer monitoring software based on a medicine bottling line real-time weighing system. According to the monitoring software, a comprehensive application platform of an upper computer system is set up on a NET development platform, a light embedded database SQLite is used as a backstage database, and the development of the intelligent software detecting along a line of the medicine bottling line is achieved. Multithread programming is supported by the NET platform, processor resources can be fully utilized, and the real-time performance of the system is improved. The SQLite database supports the service operation function and can execute multiple SQL statements in a batched mode and achieve batched, fast and frequent storage of data. In addition, a GDI and a real-time coordinate graph with weighing result drawn are adopted in the system, observation of users is facilitated, and the good interpersonal interaction function is achieved. Meanwhile, the system further provides three manners to dynamically display the measuring results, and auxiliary functions such as management and control of data storage and system self-inspecting states, inquiring and printing of historical data, user management, recipe management, system set and log books are achieved at the same time. The usability and completeness of the system are ensured.

The invention discloses a dynamic image display processing method and system. The method comprises: receiving dynamic data uploaded by a monitoring apparatus through a pre-established first thread, and performing caching; processing dynamic data of a cache region through a pre-established second thread to obtain dynamic data after format conversion; then redrawing a created graphic memory object by utilizing the dynamic data after format conversion; and after operation of redrawing the blockage graphic memory object, directly copying the graphic memory object to a window body display region to realize dynamic image display. According to the processing method and system, a receiving process and a processing process of the dynamic data are separated by adopting a multi-thread programming technology, so that the receiving and processing of the dynamic data can be carried out at the same time. Therefore, the problems of image flickering and image display delay caused by data transmission delay can be effectively avoided and the synchronization of image display data and actually received data is realized.

The invention relates to the field of radar detection, in particular to an individual-soldier radar software system. The individual-soldier radar software system comprises a UI human-machine interface module, a radar processing service center module, a GIS service function module and a radar service function module, wherein the UI human-machine interface module is in interactive connection with the radar processing service center module through signals, the UI human-machine interface module is connected with the GIS service function module through signals, and the radar processing service center module is in interactive connection with the radar service function module through signals. According to the individual-soldier radar software system, data transmission and data processing are managed in a multithread programming mode, and the overall running speed is substantially increased under the premise that the user operability and the interface visualization are guaranteed; high requirements of real-time and large-size radar data transmission for software performance are met.

A CAD/CAM/CNC closed-loop control method based on a dynamic feature model is characterized in that an XML is used as a carrier for off-line CAD/CAM data presentation and transmission; a service software unit and a feature software unit are established as an on-line CNC control platform, and the dynamic feature model is used as an integration means for off-line technological preparation and on-line processing control; a multithread programming mode and a finite-state machine method are used for realizing concurrence and triggering of multiple algorithms; a memory sharing method is used as a means for real-time communication between the service software unit and a numerical control system core and between the feature software unit and the numerical control system core. The CAD/CAM/CNC closed-loop control method based on the dynamic feature model effectively realizes CAD/CAM/CNC closed-loop control and is beneficial to the improvement of control level.

A user interface for a content presentation system is disclosed for displaying and manipulating graphical multimedia content for an audience while hiding operator-specific elements from the audience. The operator-specific elements are permitted to overlap the audience-viewable elements on the operator's display, allowing for optimal use of screen real estate particularly on smaller touch-based devices. The use of a multithreaded programming architecture is preferably employed to take advantage of multi-cored CPUs and GPUs, allowing the operator and audience displays to be governed by separate CPU cores or threads and therefore perform graphical manipulations with high efficiency.

The invention belongs to the field of software algorithm designing, and particularly relates to a method for achieving high-speed transfer of mass data of a data recorder on the basis of multithreading. Compared with the prior art, the method has the following advantages that by means of a concurrent algorithm designing and multithreading programming implementing tool, the high-performance storage system hardware capacity is exerted to the maximum extent, and the resource utilization rate is increased; the data unloading speed of the data recorder can be significantly increased, the working efficiency of the data recorder is improved, and the practical utilization rate of the data recorder is increased.

The invention provides a graphical programming multi-thread synchronization method. When a user performs graphical programming, the graphical programming multi-thread synchronization method is used for managing and synchronizing the multi-thread in the graphical programming, therefore, the problem that the graphical programming systems in the prior art do not support the multi-thread synchronization is solved. The graphical programming multi-thread synchronization method comprises the following steps: performing deep first search on each single connected component of the directed acyclic graph composed of graphical programming components when the multi-thread processing is carried out, wherein the programming components are processed one by one; adding a new branch thread starting flag and ending the current thread when the programming component is a branch node; and starting a thread and adding a thread waiting flag to wait for the synchronization of the graphical programming thread when the programming component is a branch merge point, which are performed by the first father programming component node of the merge point. By means of the graphical programming multi-thread synchronization method, the graphical multi-threaded programming has the function of thread synchronization, therefore, programmers can write graphical programs with more abundant functions.

The invention discloses a control method for an immersed photoetching immersion head pose regulating mechanism. The immersed photoetching immersion head pose regulating mechanism comprises a control system software and hardware structure. The software part comprises a pose measuring module, a pose regulating module, a user interaction module and a parent system communication module; the hardware part comprises a three degree of freedom parallel mechanism, a laser displacement sensor, a voice coil linear motor and a controller. The control system is used for accurate pose regulation for an immersion head mounted on a motion platform relative to a silicon wafer. Meanwhile, online debugging can be realized through the user interaction module; through the parent system communication module, the functions of the system such as working status switching, system parameter setting and data guiding are realized; through an anti-collision module and an emergency stop design, safe and reliable operation of the system are guaranteed. The control method is characterized in that the control software adopts modularized and multi-thread programming, and the stability, expandability and transportability are guaranteed; the mechanical structure is realized through the three degree of freedom parallel mechanism, and the mechanical rigidity and positional accuracy of the system are guaranteed.

The invention discloses a parallel implementation method of a big data Karatsuba algorithm. According to the method, the correlation problems of storage and calculation of partial products are solved through ingenious formula transformation technique, pointer operation and storage manner on the basis of 64-bit unsigned long integer operation, the algorithm is parallelized by adopting a section task sharing policy through OpenMP multi-thread programming, so that the first-layer parallelization of 8 threads in a recursive program is started to solve 8 partial products, each section is responsible for the calculation task of one partial product, and after all the partial products are solved, serial merging is carried out, so that the Karatsuba algorithm is parallelized and the efficiency of the algorithm is improved.

Present herein is a system and method for arbitration in multi-threaded programming. Task calls are directed to a task wrapper that associates the task call with a particular unique identifier, and stores parameters provided by the task call at memory locations associated with the unique identifier. The execution of the task is handled by a task loop. The task loop queues a plurality of memory portions into a circular queue. The contents of the queue are serially provided to the task, and the results are serially written to the circular queue and provided back to the calling threads.

The invention belongs to the technical field of road network navigation, and provides a method for searching and optimizing laser radar positioning by a radius. A multi-thread programming scheme is employed, input GPS coordinate is used as a center in an another thread, N pose parameters are generated by a method F within a range of the radius being R and height being H, and matching is constantlytried and ended until set matching accuracy S is met. The method is used for positioning a position, needed to be positioned, of a vehicle, local road distribution and vehicle arrival region information are inquired in database by GPS rough coordinate, the post which the vehicle cannot reach is filtered when forecast post is generated, the number of the forecast post can be greatly reduced, so that matching accuracy and speed are improved.

The invention relates to an asynchronous SQL connection query optimization method based on a reinforcement learning DQN algorithm, and belongs to the technical field of computers. According to the method, after the output of each layer of unit of the Tree-LSTM network, an attention layer is added, and weighting calculation is carried out on the output vector of each layer of the LSTM network again. Therefore, data features transmitted by left and right hidden layers nearby the hidden layer are highlighted; multi-thread programming of Python is utilized, multiple DRL deep reinforcement learning modules are constructed at the same time, and model training data are shared, so that asynchronous execution of multiple training modules is achieved, and the model training speed is greatly increased.