204 results about "Inter-process communication" patented technology

A system and method for securing inter-process communications (IPCs) between generative AI and external tool servers, including intercepting IPCs having a requested operation, performing a security analysis on the IPCs for security threats, performing a permission validation for permissions for the requested operation of each IPC, and either approving or blocking the requested operation of each IPC based on the security analysis and the permission validation.

The invention discloses a method for communication between a user program and a virtual machine on a microkernel Hypervisor, the microkernel Hypervisor is provided with two shared memory areas, the shared memory area 1 is accessed by the user program and a root service Rootserver, the shared memory area 2 is accessed by the Rootserver and the virtual machine, the user program writes communication request data with the virtual machine into the shared memory area 1, and the user program writes communication request data with the virtual machine into the shared memory area 2. The method comprises the following steps that a VMM sub-thread is used as a shared memory area 1, a Rootserver is notified through inter-process communication, the Rootserver reads communication request data from the shared memory area 1, the communication request data is written into a shared memory area 2 after being analyzed by the VMM sub-thread, a system calls a syscale to transmit a communication request to a kernel, the kernel injects virtual interrupt into a virtual machine, and the virtual machine sends the communication request to the Rootserver. And an interrupt processing program of the virtual machine processes the communication request and writes a processing result into the shared memory area 2, then the processing result is returned to the Hypervisor through the Hypercall, and a Rootserver of the Hypervisor feeds back the processing result to a user program through the IPC. The method is designed for the microkernel Hypervisor environment, and the overall performance and efficiency of the embedded virtualization system are improved.

The embodiment of the invention discloses a real-time state monitoring method and device for high-frequency time sequence data and a medium, and relates to the technical field of the Internet of Things, and the method comprises the steps: obtaining a state monitoring task of target production equipment, carrying out the initialization configuration, building a multi-topic subscription channel corresponding to the state monitoring task, and carrying out the multi-topic subscription through the multi-topic subscription channel, acquiring multi-channel high-frequency sensing data of a field side; multi-channel high-frequency sensing data is stored to a time sequence storage node preset on the edge side by utilizing communication among multiple processes, and the time sequence storage node comprises a super table structure storage library constructed based on TD engine; and performing multi-thread analysis on the multi-channel high-frequency sensing data in the time sequence storage node according to an AI model node preset on the edge side, and determining real-time state data of the target production equipment. Through collaborative design of a multi-topic subscription channel, edge side time sequence storage optimization and multi-thread AI analysis, the high-frequency data real-time processing capability and the analysis efficiency are remarkably improved.

The embodiment of the invention provides a data transmission method and electronic equipment, and the method is applied to first electronic equipment, and comprises the following steps: when business data to be sent to second electronic equipment exists in a plurality of business processes in the first electronic equipment, sending the business data to the second electronic equipment; to-be-sent service data is written into a first shared memory through a first service process in the first electronic equipment, and the service processes of different service applications correspond to different shared memories; a first notification message is sent to a first transmission process in the first electronic device through the first service process based on an inter-process communication IPC communication mechanism, the first notification message is used for indicating the first transmission process to read service data to be sent from the first shared memory, and the first notification message does not carry the service data to be sent; and reading the to-be-sent service data from the first shared memory through the first transmission process, and sending the to-be-sent service data to the second electronic equipment. Therefore, the problems of IPC communication over-memory, crash and the like are avoided.

A system / process provides fault tolerance to an integrated component system which integrates core components of a transaction processing system into a single processing platform, i.e., a single server, enabling elimination of the network interconnects and associated latencies introduced thereby in favor of much faster interconnects, such as inter-process communication and shared memory communication messaging, where a failure of any one component necessitates failing over the entire system to a backup thereof.

The invention discloses a controller simulation system construction method and device, equipment and a medium, relates to the technical field of simulation, is applied to a preset transaction-level component, and comprises the following steps: connecting a simulation model of a controller and equipment based on a nonvolatile memory host controller interface specification, and connecting a preset virtual operating system simulator through an inter-process communication component; converting a first transaction level modeling message sent by the preset virtual operating system simulator into a first transaction layer data packet message, and calling the simulation model to process the first transaction layer data packet message; and converting a second transaction layer data packet message sent by the simulation model into a second transaction level modeling message, and sending the second transaction level modeling message to the preset virtual operating system simulator, so that the preset virtual operating system simulator processes the second transaction level modeling message, and realizing connection communication between the preset virtual operating system simulator and the simulation model so as to construct the simulation system. And the construction of the controller simulation model is realized.

The invention discloses an EtherCAT master station synchronous control method and system based on a microkernel operating system, and belongs to the technical field of industrial automation field bus control. According to the system, a microkernel architecture is adopted, an EtherCAT protocol stack and a universal network protocol stack are deployed as two independent user mode processes, and data interaction is carried out through an inter-process communication and shared memory mechanism provided by a microkernel. According to the method, through a bidirectional dynamic clock compensation mechanism, static compensation in an initialization stage and dynamic compensation in an operation stage of a system are combined; a dynamic task scheduling strategy based on load awareness is adopted, and the task execution sequence is dynamically adjusted according to the CPU utilization rate and the task priority monitored in real time; a hardware redundancy design of double clock sources and double communication links is introduced, and a progressive synchronous recovery strategy is adopted during switching. According to the invention, nanosecond-level synchronization precision and microsecond-level fault switching can be realized, and the method is suitable for industrial control scenes with extremely high requirements on real-time performance and reliability.

The invention discloses an embedded brain-computer semantic recognition system and method. The system comprises an analog front-end module, a processing module and a display module, the analog front-end module comprises a power management module, a low-pass filtering module and an analog-to-digital conversion module; the processing module comprises a signal acquisition unit, a signal decoding unit, a storage unit and a logic control unit; the signal acquisition unit receives the electroencephalogram signal output by the analog-to-digital conversion module; the storage unit is used for storing the collected electroencephalogram data; the signal decoding unit performs feature extraction and recognition on the electroencephalogram signals; and the logic control unit is used for executing a corresponding task according to the identification result output by the signal decoding unit. According to the system, effective capture and preprocessing of the electroencephalogram signals are achieved through the analog front-end module, and the system adult cost is reduced. According to the invention, the signal acquisition and decoding processes are integrated in mobile processing, and the electroencephalogram data are directly transmitted by adopting an inter-process communication mechanism, so that the real-time performance and accuracy of signal processing are ensured.

The invention provides a cabin integration method of whole vehicle self-adaption platform service based on SOA and a vehicle, and relates to the technical field of vehicle SOA service, the method comprises the following steps: deeply integrating functional components of a whole vehicle self-adaption platform into an Android operating system, and embedding a communication module into an Android hardware abstraction layer; the original biochemical deployment of the SOA service in the cabin domain is realized; meanwhile, an efficient and low-delay service calling interface is constructed by expanding a communication mechanism between Android native processes, so that the Android application can directly call the whole vehicle level SOA service, and the dependence of traditional cross-domain communication on a vehicle-mounted Ethernet and a central gateway is avoided; besides, processor core resources are dynamically allocated in combination with the function security level of the SOA service, so that the real-time performance and execution reliability of high-security-level tasks are guaranteed, and the overall resource utilization efficiency of the system is improved.

The invention relates to the technical field of inter-process communication, in particular to a communication method and system among multiple software operating environments, which comprises the following steps of: acquiring protocol identifiers, version numbers and packaging formats of a network protocol stack and a cross-platform compatible protocol, analyzing coding formats and control fields of data packets, extracting communication identifiers and field lengths, and establishing a network protocol stack and a cross-platform compatible protocol; and analyzing the compatibility of the coding format, and generating a protocol matching index. According to the method and the device, fine communication adaptation can be realized by acquiring and analyzing key parameters of a network protocol, such as a protocol identifier and a packaging format, through an innovative scheme, so that the accuracy and the efficiency of cross-platform data transmission are optimized, the accuracy of data packet coding and control field analysis is improved, and the data transmission efficiency is improved. In addition, by monitoring network performance and dynamically adjusting a sending window and a compression ratio, the bandwidth utilization rate and the reliability of network communication are remarkably improved, a communication path is deeply analyzed and optimized, and it is ensured that data are transmitted through an optimal path.

The invention relates to the technical field of computers, in particular to a container health state active monitoring method and system based on log event driving, and the method comprises the steps: obtaining a standard output log stream of a target application container; performing streaming analysis on the log stream based on a preset log mode matching rule set, and generating a health state signal when specific log information representing health state change is identified; sending the health status signal to a container composer agent component on the computing node through an inter-process communication mechanism in the node; and after receiving the health state signal, the container composer agent component executes a management operation corresponding to the health state type. According to the method, the standard output log is used as an event source, non-intrusive and near-real-time health state monitoring is achieved, the aims of remarkably reducing detection delay and improving system stability can be achieved, and the method is suitable for business scenes with strict requirements for high availability.

The invention provides an Android platform multi-process communication optimization and task cooperative scheduling method and system, and relates to the technical field of communication, and the method comprises the steps: creating a communication session identifier and establishing a corresponding relation with an application list abstract, and generating session description information; calculating a resource consumption predicted value allocation priority and a time slice; establishing a bidirectional zero-copy message channel and constructing a dependency graph; processing conflicts by adopting a copy-in-write strategy; and cleaning resources when the session is terminated. According to the invention, the inter-process communication overhead is reduced, the system response speed is improved, the resource occupation is reduced, and the multi-task cooperative processing capability is enhanced.

The invention discloses a Java JAR packet encryption protection method and device, equipment and a medium, and the Java JAR packet encryption protection method comprises the steps: splitting a JAR packet decryption key into two fragments, and statically storing the two fragments in a starter program and a dynamic link library in a nonlinear confusion structure, thereby avoiding the exposure of a key plaintext. During starting, the starter transmits the first secret key fragment to the dynamic link library through secure inter-process communication, and the first secret key fragment is combined with the second fragment in the memory to restore a complete secret key. And during class loading, the Java agent intercepts a request and transmits an encrypted class byte code to the dynamic link library through the JNI, the encrypted class byte code is decrypted by using the restored key, and a plaintext is returned for loading. According to the method, static decompilation and dynamic memory dump attacks are prevented, and the anti-reverse and anti-leakage capabilities of Java software in a privatized deployment environment are remarkably improved.

A system / process provides fault tolerance to an integrated component system which integrates core components of a transaction processing system into a single processing platform, i.e., a single server, enabling elimination of the network interconnects and associated latencies introduced thereby in favor of much faster interconnects, such as inter-process communication and shared memory communication messaging, where a failure of any one component necessitates failing over the entire system to a backup thereof.

A process control system software security architecture, that is more effective at preventing zero-day or other types of malware attacks, implements the use of “least privileges” when executing the applications and services run within a computer device. The least privileges based architecture separates “service” processes from desktop applications that run on behalf of a logged-on user by partitioning the global namespace of the software system into service namespaces and logged-on user namespaces, and by strictly controlling communications between the applications and services in these different namespaces using interprocess communications. Moreover, the security architecture uses custom accounts to assure that each service process has the least set of privileges that are needed for implementing its function regardless of the privileges associated with the calling application or user.

The embodiment of the invention provides a streaming media seamless updating method and device, under the condition that a preset updating signal is received, any sub-process in a total process is copied, a new process is started in the sub-process, and meanwhile, configuration information of the total process is transmitted to the new process. The new process completes initialization, rewrites internal sub-processes of the new process, sends a session transfer instruction to each sub-process of the total process through inter-process communication, starts session transfer through the total process, and obtains pairing information. Monitoring the real-time load of the shared memory, determining the real-time load information and the type weight corresponding to each preset streaming media type, determining the migration priority of each streaming media in the current shared memory according to the real-time load information and the type weight, migrating the streaming media to the new process according to the migration priority and the pairing information, and exiting the total process. According to the method, the defect that waiting is needed in the streaming media updating process is effectively overcome, and the stability and the user experience in the streaming media updating process are remarkably improved.

The invention discloses an Android cross-process stain detection method based on transaction graph reconstruction, and relates to the technical field of mobile terminal information security, and the method comprises the following steps: a deployment monitoring module intercepts Binder communication between Android applications; adding a stain mark for the sensitive data source, and attaching the mark during inter-process transmission; recording information of communication transactions between each process, constructing a transaction graph, and restoring paths for transmitting sensitive data between different processes in the graph; performing traversal analysis on the transaction graph, and searching for a path of spreading the data carrying the taint marks from the source application to the target application; and if the target application does not authorize to acquire the sensitive data or send the sensitive data out of the equipment, judging that the sensitive data is leaked and outputting an alarm. According to the method, flowing of privacy data can be tracked across application boundaries, automatic detection of cross-process leakage of user sensitive information caused by application collusion is achieved, and the accuracy and comprehensiveness of privacy leakage detection of the Android platform are remarkably improved.

Embodiments of the present application provide an inter-process communication method, an application server, a terminal device and a storage medium. In the embodiments of the present application, the application server uses a streaming protocol channel between the application server and an application client in the terminal device as an inter-process communication link across terminals with the assistance of an inter-process communication device, so that an application program in the application server can communicate with an application program in the terminal device, and cross-terminal data interaction capability is provided for cloud applications, cloud desktops and the like. The security of data transmission is good, resource consumption is low, and cost is low. Further optionally, the application server uses an IPC channel as an inter-process communication link in the same terminal with the assistance of the inter-process communication device, so that communication between application programs in the application server is implemented, and same-terminal data interaction capability is provided for cloud applications, cloud desktops and the like. The security of data transmission is good, resource consumption is low, and cost is low.

A gateway (2) for a fieldbus system (100), wherein the gateway (2) comprises a first processor (6) with a first operating system (62), a second processor (7) with a second operating system (72) which is different from the first operating system (62) and has a virtual Ethernet interface (73), and an inter-processor communication interface (9) which is designed to enable an Ethernet protocol-based inter-process communication between the first operating system (62) and the second operating system (72) using the virtual Ethernet interface (73).

The invention relates to a distributed multi-process time sequence violation analysis method, and belongs to the field of electronic design automation, and the method comprises the following steps: S1, segmenting a circuit diagram according to a driving port, each segmenting data block comprises a time sequence arc, pin information and connection information, and each connection data block comprises a start pin and a stop pin; s2, multiple processes are started, each process loads one segmented data block, a corresponding time sequence sub-graph is constructed and analyzed, and a dependency relationship among the time sequence sub-graphs is established among the processes through data exchange; s3, reading time sequence constraint information and a process library file of the corresponding time sequence sub-graph by each process, then performing time sequence calculation and pin flip value calculation according to a topological sequence, and completing dependency propagation through inter-process communication; and S4, outputting time sequence information to multiple processes, completing a time sequence report, and reporting a time sequence violation. According to the method, the analysis efficiency is greatly improved through distributed calculation, and the method can be suitable for all comprehensive stages.

System and method for providing control applications via sequence control components, in the case of control applications of which the execution demands selected privileges, wherein a specification of each of the required safety-critical resources is established, an additional sequence control component, which is provided for providing access to each of the required safety-critical resources, is determined based on the the specifications, execution of the respective sequence control component together with the additional sequence control component is accordingly started, an interface for interprocess communication between the respective sequence control component and the additional sequence control component is set up via a sequence control environment, and the access to the respectively required safety-critical resources is provided via the interprocess communication between the respective sequence control component and the additional sequence control component.

This invention discloses a method and apparatus for network traffic load balancing scheduling in a multi-node high-performance computing cluster, comprising three parts: network load detection, load estimation, and balancing decision. ArCa implements all parts on the host machine, requiring no modifications to the multi-node high-performance computing cluster network. Hosts send probe packets to each other to obtain the mapping relationship between paths and 5-tuples, as well as the path load. This information forms a network load table, on which ArCa estimates the short-term network load. Through estimation, the host makes a traffic plan decision and selects a path to send messages with the help of a skip flow algorithm. Each module is a separately running process that exchanges information through inter-process communication (such as MMAP), thereby improving the overall concurrency of the mechanism and enhancing its reaction speed and decision-making efficiency.

Method for executing application processes (20) in a processor circuit (14) of a control unit in a motor vehicle (10), wherein each application process (20) is executed in its own address space (22) of a working memory (18) of the processor circuit (14), and a common communication logic (24) for exchanging messages (26) for interprocess communication is inserted into the respective address space (22), wherein the interprocess communication comprises at least some of the application processes (20) as a respective message source (30) exchanging messages (26) of a respective predefined message type with at least one of the other application processes (20) as a respective message sink (32) via the communication logic (24). The message types are specific to the respective combination of the message source and the at least one message sink (26).For efficient and secure interprocess communication, the method provides that, outside the displayed communication logic (24), definition data is made available to each of the application processes (20) in its address space (22) only for those message types that it requires as a message source and / or message sink for the interprocess communication, and thus the definition data that is made available to the application processes (20) in their address spaces (22) is different for at least two of the application processes (20).

The invention discloses a method, a system and a medium for expanding and accelerating communication between microkernel processes by using memory labels, and the method comprises the following steps: distributing memories for application programs and system services, and labeling the distributed memories; realizing an isolated memory domain and an execution domain based on the label; inter-process communication is carried out in a library operating system or kernel module form by utilizing memory mark extension characteristics; and cross-service interaction is realized through the fast channel. According to the invention, the delay of inter-process communication of the microkernel is obviously reduced, and meanwhile, effective isolation and security are ensured.

The invention discloses a cross-platform VR resource performance evaluation and compatible operation method and system, and the method comprises the steps: building a VR resource performance evaluation model based on the performance evaluation of a CPU and a GPU, and the model comprises a CPU score, a GPU score, a weight coefficient and a performance stability correction factor of a current device; the CPU score is obtained through calculation of inter-process communication and a context switching number in a current equipment system environment, the GPU score is obtained through calculation of an actual computing power value and rendering delay which are obtained through multiple iterations of a standard GLSL matrix multiplication in the current equipment system environment, and the performance stability correction factor is determined according to frame time when VR resources are operated by current equipment; when the VR resources need to be operated, the evaluation score of the VR resources operated by the current equipment is calculated through the performance evaluation model, and the corresponding configuration parameters are allocated to operate the VR resources. According to the invention, the fluency and stability of the VR picture during operation can be ensured, and the user experience is improved.

The application discloses an EtherCAT master station synchronization control method and system based on a microkernel operating system, and belongs to the technical field of industrial automation fieldbus control. The system adopts a microkernel architecture, deploys an EtherCAT protocol stack and a general network protocol stack as two independent user state processes, and carries out data interaction through an inter-process communication and shared memory mechanism provided by the microkernel. The method combines static compensation in the system initialization stage and dynamic compensation in the running stage through a bidirectional dynamic clock compensation mechanism, adopts a dynamic task scheduling strategy based on load sensing, dynamically adjusts the task execution order according to the real-time monitored CPU usage and task priority, introduces a hardware redundancy design of double clock sources and double communication links, and adopts a gradual synchronization recovery strategy during switching. The application can realize nanosecond-level synchronization accuracy and microsecond-level fault switching, and is suitable for industrial control scenes with extremely high real-time and reliability requirements.

The invention provides an inter-process communication method and device for a microkernel operating system, and the method comprises the steps: registering a key instruction page and a stack page in an initialization stage of a service process; constructing a process prefetching set according to the registered key instruction page and stack page; and in an inter-process communication initiating stage, loading the target page table items in the process prefetching set to the user process fast table so as to perform inter-process communication. According to the invention, the efficiency of inter-process communication of the system can be improved, and communication delay is reduced.

The embodiment of the present application provides a method and device for seamless updating of streaming media. When a preset update signal is received, any sub-process in the main process is replicated, and a new process is started in the sub-process, while the configuration information of the main process is passed to the new process. The new process completes initialization and replicates its internal sub-processes, sends a transfer session instruction to each sub-process of the main process through inter-process communication, starts the transfer session through the main process, and obtains pairing information. The real-time load of the shared memory is monitored, the real-time load information and the category weights corresponding to each preset streaming media category are determined, the migration priority of each streaming media in the current shared memory is determined based on the real-time load information and the category weights, the streaming media is migrated to the new process according to the migration priority and pairing information, and the main process is exited. This method effectively solves the shortcomings of waiting during the streaming media update process, and significantly improves the stability and user experience during the streaming media update process.

The invention provides a cross-application sandbox penetration protection system and method based on hardware assistance, and belongs to the technical field of mobile terminal security. The method comprises the following steps: S1, acquiring a memory access sequence of a process in real time through a memory tag extension module, and acquiring permission combination and inter-process communication data through a kernel interface; s2, calculating a deviation value between the permission combination and the white list based on cosine similarity, and quantifying a state transition abnormal probability of the memory access sequence by using a Markov chain algorithm; s3, performing feature fusion on an output result of the step S2 and inter-process communication data, and inputting a long-short-term memory network model to generate a comprehensive risk score; when the score exceeds a threshold, the dynamic policy arbitration module is triggered to perform a hierarchical response action. The method has higher recognition rate and interception rate.

The invention provides a parasitic parameter extraction method and system for Socket interface multi-task coordination, and belongs to the technical field of parasitic parameter extraction. The method comprises the following steps: acquiring and analyzing an initial configuration file, and creating a read-write lock mechanism of a process pool and a global task coordination table; establishing non-blocking transmission control protocol monitoring, and mapping a Socket connection handle established by the sub-process and the host process to a global task coordination table; executing parasitic parameter extraction by utilizing the screened sub-processes, and generating a parasitic parameter result data packet after the extraction is completed; and performing Hash abstract verification, and if the Hash abstract verification is passed, marking the task corresponding to the parasitic parameter result data packet as completion and recording the extracted parasitic parameter. According to the method, a traditional file synchronization mechanism is replaced based on non-blocking Socket communication and an event-driven model, so that the inter-process communication efficiency is remarkably improved; and by adopting read-write lock hierarchical control and atomic operation, the utilization rate of hardware resources is effectively improved.