88 results about "Sigaction" patented technology

The invention discloses a multithreading hard real-time control method based on Linux. The multithreading hard real-time control method based on Linux comprises the following steps that step 1, an overall situation mutual exclusion lock is defined and initialized; step 2 a master control thread and a controlled thread are created; step 3, a mutual exclusion lock is applied in the master control thread and signal registration is conducted in the controlled thread; step 4, the master control thread is monitored in real time, whether the controlled thread needs to be suspended or not by the master control thread in real time is detected, if the answer is positive, a step 5 is conducted; if the answer is negative, whether the controlled thread needs to be recovered or not by the master control thread is detected, and if the answer is positive, a step 6 is conducted; if the answer is negative, the step 4 is conducted in a circulating mode; step 5, the master control thread conducts the operation of suspending the controlled thread and the step 4 is conducted; step 6, the controlled thread is recovered by the master control thread; step 7, a mutual exclusion lock is applied again by the master control thread and the step 4 is conducted. The high priority of signal transmission and the characters of the mutual exclusion locks are used, so that the purposes that the controlled thread is suspended in real time and recovered in real time are achieved, and the requirement for hard real time is satisfied.

Techniques for porting operating systems of a first class whose representatives include operating systems implementing the POSIX standard to operating systems of a second class whose representatives include operating systems implementing the Win32 API. Processes belonging to operating systems of the first class are characterized by a single thread, parent-child relationships, and signal handlers that execute on the top of the stack; processes belonging to operating systems belonging to the second class have multiple threads, do not have parent-child relationships and do not necessarily execute their signal handlers at the top of the stack. Techniques are disclosed for implementing signal handling as required for operating systems of the first class and providing a signal to a parent process of the first class when one of its child processes terninates. Processes of the second class adapted for implementing processes of the first class are disclosed, as well as implementations of the POSIX fork and exec functions using those processes.

The invention relates to a program debugging method and device and a storage medium. The method comprises the steps of in the debugging process of a debugging object, receiving a page refreshing signal sent by a debugging front end wherein the debugging object comprises a fast application and / or a small program; interrupting the operation of the debugging object according to the page refreshing signal; determining a page refreshing mode according to the page refreshing signal; and after the operation of the debugging object is interrupted, refreshing the page of the debugging object displayedby the debugging front end based on the determined page refreshing mode. According to the technical scheme, different refreshing modes are provided for selection, the debugging front end and the debugging platform do not need to be restarted when the page is refreshed each time, and therefore the debugging efficiency is improved.

The invention provides a method for monitoring the performance of an iOS terminal application program. The method comprises the steps of starting an application program of an iOS terminal, inheritingthe NSURLProtol to intercept an upper-layer network request of the application program, and capturing the network request information of the application program by creating an NSURLProtol instance; creating a sub-thread, monitoring the RunLoop of the main thread by the sub-thread, and acquiring the lag information of the main thread; acquiring a Mach exception and a Unix signal through NSExceptionand SIGABRT, and reading an NSException object so as to acquire crash information of an application program; and sending the network request data, the lag information and the crash information to a server. According to the invention, the network request information, the crash information and the lagging information can be dynamically obtained, and the real-time monitoring of the performance of the iOS terminal application program is realized.

The embodiment of the invention provides a FPGA-based prototype verification device and method, and relates to the technical field of prototype verification. The prototype verification device based on the FPGA comprises an RTL design module, a circuit simulator, a compiling tool and an FPGA module which are connected with one another, and the RTL design module is used for obtaining a plurality of key signals in an RTL design file, storing hierarchical paths of the key signals and generating a constraint list based on the hierarchical paths of the key signals at all levels; the RTL design module is further used for obtaining a plurality of redundant signals in the RTL design file according to the key signals at all levels; the circuit simulator is used for generating a configuration file of the compiling tool based on each level of key signals and the plurality of redundant signals; the compiling tool is further used for obtaining a test file for prototype verification according to the RTL design file, the constraint list and the configuration file; and the FPGA module is used for performing prototype verification by using the test file. According to the invention, the error checking period of prototype verification is shortened, and the debugging period of prototype verification is accelerated.

The invention discloses a shortcut key implementation method, computing equipment and a storage medium. The shortcut key implementation method comprises the following steps: constructing a compatible module in the computing equipment; running an application program in the first operating system through the compatible module, wherein the application program is suitable for running in the second operating system; generating a second shortcut key file according to a target operation to be executed in the application program, and registering the second shortcut key file in the first operating system; in response to a received input signal of the input device, generating a second input instruction according to the second shortcut key file and the input signal; and sending the second input instruction to the application program so as to execute the second input instruction through the application program to complete the target operation. According to the method and the device, the second shortcut key file is registered in the operating system, so that when the application program is executed in the unmatched operating system, the shortcut key can still be normally used to complete the target operation, and the use experience of a user when the operating system is used to run the application program which is not completely matched is improved.

The invention provides a computer-aided design model integration system and method based on interface control files, including an interface control file editing module; a data sharing service bus module communicating with the interface control file editing module; and a data sharing service bus module communicating with the data sharing service bus module A plurality of API interfaces; a model unit module communicated with the API interface; and an overall system architecture modeling module connected with the data sharing service bus module; the data sharing service bus module includes data interaction service units; the interface control file editing module is used for editing Interface control document; the data interaction service unit is used to obtain the message package and signal definition message of the Rhapsody model unit, Simulink model unit and custom model unit through the API interface according to the interface control document; the overall system architecture modeling module is used to obtain the message package according to the message package and signal definition messages to build the overall system architecture model.

The invention discloses a method for recovering a faulty CPLD, comprising the following steps: storing an upgrade file of the CPLD in a BMC; in response to the BMC writing data in a write-only register of the CPLD, judging whether the BMC can read and write the CPLD; Since the BMC cannot read and write the CPLD, it is judged whether the BMC detects the assignment signal of the CPLD to the GPIO; and in response to the BMC not detecting the assignment signal of the CPLD to the GPIO, the CPLD is updated based on the upgrade file. The invention also discloses a computer device and a readable storage medium. The method, device and medium for recovering a faulty CPLD proposed by the present invention ensure no misjudgment of the fault of the CPLD through a double judgment mechanism, improve the reliability of the overall system, and store the upgrade file of the CPLD in the BMC, thereby ensuring the recovery of the CPLD to the correct version.

The invention discloses a method for analyzing abnormality of a user state process under a linux system. The method realizes abnormal analysis by taking over a specific signal of the process itself to obtain the abnormal task context and analyzing the task stack according to the system structure. This solution can assist software developers to quickly and accurately locate and solve software bugs.