52results about How to "No deadlock" patented technology

The invention discloses a multi-channel message transmitting method. The multi-channel message transmitting method comprises the following steps of enabling messages to firstly enter a plurality of input channels, wherein the input channels are originating terminals of the messages and control the number of the messages; transporting the messages in the input channels to a judger and enabling the judger to judge whether the messages input by the channels are transmitted in a parallel mode or a serial mode; directly transmitting the messages of the input channels to corresponding output channels when the messages are transmitted in the parallel mode, namely, the messages are transmitted through different channels; writing the messages into serial channels and transmitting the messages to the corresponding output channels through the serial channels when the messages are transmitted in the serial mode, namely the messages are output through the same channel. Compared with the prior art, the multi-channel message transmitting method avoids the problem that the messages retain in the serial channels for a long time due to the fact that the messages belong to the same output channel are transmitted in the serial mode and is strong in practicability.

The invention relates to a method for operating a transmission device (1), in particular a double-clutch transmission device, the transmission device (1) comprising a plurality of gear selectors (2, 3, 4, 5) each having a gear selector valve (15, 16, 17, 18), and a gear selector piston (23, 24, 25, 26) which is operatively connected to a selector fork of the transmission device (1), is arranged in a gear selector cylinder (19, 20, 21, 22) and divides the latter into a first pressure chamber (27, 28, 29, 30) and a second pressure chamber (31, 32, 30 36). In a first shifting position of the gear selector valve (15, 16, 17, 18), the first pressure chamber (27, 28, 29, 30) has a flow connection to a common feed line (12), in a second shifting position, the second pressure chamber (31, 32, 33, 34) has a flow connection to a common feed line (12), and in a neutral position, none of the pressure chambers (27, 31; 28, 32; 29, 33; 30, 34) has a flow connection to a common feed line; and a flow connection of the feed line (12) to a common pressure source (6) is enabled in a first operating position of the shifting valve (13) and is interrupted in a second operating position of the shifting valve (13). Here, according to the invention, to achieve a change from a standby operating mode into a power saving operating mode, a pressure test is carried out, in which the gear selector valves (15, 16, 17, 18) of the gear selectors (2, 3, 4, 5) for setting the neutral position and the shifting valve (13) for setting the second operating position are activated, and then the gear selector valve (15, 16, 17, 18) of at least one of the gear selectors (2, 3, 4, 5) for setting one of the shifting positions is activated.

The invention discloses a method for realizing data sharing among tasks. The problems that deadlock is easy to be generated by multi tasks when visiting the sharing data area and the fault is not easy to be localized are solved. The invention includes that the task without the authority to visit the sharing data area sends an ACTION message to the task with visit authority; after the task with visit authority receives the message, the task runs corresponding program and operates the sharing data area according to the content of the message; after the running is over, the task with visit authority sends a responses message to the sender of the ACTION message; the responses message comprises the result of running; the sharing data area of the invention need not to be protected and the sharing data area data can be safely visited among tasks. The lock and other protection mechanisms are not considered and the code is simplified. The deadlock can not be generated without lock ,so the problem of deadlock is completely avoided.

The invention discloses a method and a device for monitoring a real-time protection document, which are applied to a condition that a monitoring device and other devices simultaneously monitor an accessing action to a document in an operating system. The method comprises the following steps that: when monitoring the accessing action, the monitoring device records the document in a data sheet and releases the accessing action; and the monitoring device polls the data sheet, searches the document according to records of the data sheet, scans the document and intercepts or keeps releasing the accessing action according to a scanning result. In the invention, the conflict between document accessing drivers of antivirus software is resolved, so an antivirus device using the technology can coexist with other antivirus devices without locking the operating system; meanwhile, the performance of the operating system does not become slow in the mode; and when real-time protection of the other antivirus devices is started, the real-time protection of the antivirus device also normally works and is not stopped to guarantee the safety of a user computer.

The present application discloses a method and system for accessing NandFlash by SSD firmware, initializing multiple command state structures that can be executed in parallel, and any command state structure matches an asynchronous state machine; applying for any command state structure; using The context mechanism stores the state of any module in the current process; after executing the state in the current process, it jumps out of the asynchronous state machine; by polling the IPC feedback information returned by NandFlash, the asynchronous state machine is processed in sequence. The system includes an initialization module, an application module, a storage module, a jump module and a processing module. Through the present application, it is possible to make full use of CPU resources while ensuring that different modules on the same CPU can operate NandFlash resources without deadlock, thereby greatly improving CPU utilization and the efficiency of SSD firmware accessing NandFlash.