62 results about "Spin locks" patented technology

A safety seat that includes a first base, a second base positioned on the first base and rotatable relative to the first base about an axis, a seat positioned on the second base and rotatable relative to the first base about the axis, and a lock disposed on the second base. The lock has a movable lock component configured to lock the first base with the second base. The safety seat further includes an actuator configured to disengage the movable lock component from the first base and permit the second base to rotate relative to the first base, and a link comprising a first end and a second end, the link extending between the movable lock component and the actuator. The first end contacts the movable lock component and the second end contacts the actuator.

The invention relates to a method and a system for testing a lock competition mechanism in a high-concurrency scene, and relates to the technical field of computers. The method comprises the following steps: a plurality of processing units perform competition processing on target lock resources based on a preset spin lock test function; the target processing unit obtains the target lock resource and updates the occupation state of the target lock resource through the lock state flag; after determining that each processing unit obtains the target lock resource according to the lock state flag, controlling the processing unit to send a competition reset instruction to each processing unit, so that each processing unit restarts competition processing of the target lock resource, and the number of test rounds is updated; and after the test round number reaches a preset number of times, the control processing unit controls to quit the competition test of the target lock resource. By adopting the method, an efficient, accurate and reliable test process can be formed through competition processing of the multiple processing units, optimization of a synchronization mechanism and resetting and round number management of the control processing units.

The invention discloses a spin lock optimization method and electronic equipment, and the method comprises the steps: creating and initializing a spin lock structural body which comprises a lock holder pointer; when each thread obtains the spin lock, creating a corresponding request node structure body to form a waiting queue; in the waiting queue, determining spin lock holders in the plurality of threads based on the lock holder pointers; and after the processor core corresponding to the spin lock holder executes the critical zone code of the corresponding thread, traversing the waiting queue, reading the critical zone function pointer of each waiting node, and sequentially executing the critical zone code in each request node structure body on the current processor core based on the critical zone function pointer. According to the method, the performance bottleneck of a traditional spin lock in a multi-core environment is broken through, all-around optimization of cache consistency overhead, queue delay, energy efficiency ratio and multi-core expansibility is achieved, and the performance of the spin lock in the multi-core processor environment is remarkably improved.

The invention discloses a data output method of a distributed control system and a related device, and relates to the field of industrial control, and the method comprises the steps: setting data areas with different output periods in a shared memory, configuring different spin locks for the different data areas, processing obtained target output data by a first core, and outputting the target output data to a second core; and obtaining the spin lock of the target output data area in the shared memory. And writing the target output data into a target output data area, and releasing the spin lock. And an output data notification is sent to the second core, and the second core responds to the notification to obtain the spin lock of the target output data area, reads the data in the target output data area and sends the data to the corresponding IO module through the CAN bus controller. Therefore, according to the scheme, the output data of different periods in the shared memory are protected through different spin locks, the waiting time for obtaining the spin locks is avoided, and the real-time performance of data output is improved. Meanwhile, the utilization rate of SoC resources is improved.

The invention provides a system operation lagging construction method and device, equipment, a medium and a program product. Relates to the technical field of system performance testing. The method comprises the steps that the CPU thread number and a watchdog threshold value of a current system are obtained; on the basis of the CPU thread number and the watchdog threshold value, the duration of the target thread executing busy waiting operation is calculated through a preset formula; initializing a spin lock of a kernel mode, and creating target threads of which the number is the same as that of the CPU threads, so that the target threads execute preset processing logic to construct system operation jamming; the preset processing logic comprises the following steps: periodically obtaining a spin lock; responding to the situation that the spin lock is not obtained, and continuing to execute the spin lock obtaining operation; and in response to obtaining the spin lock, executing a busy waiting operation. According to the method, CPU resources are continuously occupied through kernel spin lock competition, and a real system jamming scene is simulated. The busy waiting operation duration is dynamically calculated, it is ensured that the single-thread lock holding time is slightly lower than a watchdog threshold value, and crash of a system triggering unrecoverable is avoided.

A system and method for inducing spin locking onto superconducting qubits, via a control drive, during performance of a quantum gate between the superconducting qubits is described. Spin locking may prolong the coherence times of the superconducting qubits involved in the gate, therefore reducing the risk that a fault occurs due to interference by noise in the environment. In order to induce spin locking, pulses may be directed at the superconducting qubits for the duration of the gate. The pulses may be determined and optimized by optimal coherence control methods and applied using a control drive. The pulse profiles may be determined in a manner that is specific to the given gate, to the superconducting qubits involved in the gate, and to the quantum hardware upon which the superconducting qubits and the gate are implemented.

The invention discloses a shared peripheral control method of a single-chip multi-core system, electronic equipment and a medium. The method comprises the following steps: determining a use priority of each core to a shared peripheral based on a performance parameter of each core; when the shared peripheral is not used and the first core is started, a hardware spin lock is obtained, the shared peripheral is initialized, a control authority of the shared peripheral is granted to the first core, and the hardware spin lock is released; when any second core is started, the second core obtains a hardware spin lock, the target core occupying the control authority of the shared peripheral is re-determined based on the initialization state of the shared peripheral, the second use priority and the first use priority, and peripheral use interfaces of the remaining cores point to a proxy communication interface of the target core. According to the method, the target core occupying the control authority of the shared peripheral is dynamically adjusted based on the use priority of each core using the shared peripheral to the shared peripheral, each core has an opportunity to take over the agent of the shared peripheral, and the system power consumption is reduced.

An example system includes a plurality of wait queues implemented in a first portion of a memory unit configured to store a plurality of lock requests. The system includes a lock head array implemented in a second portion of the memory unit configured to store a plurality of lock heads. Each wait queue of the plurality of wait queues is mapped to one lock head in the lock head array. The system includes a lock waiter array implemented in a third portion of the memory unit configured to store a number of entries corresponding to each lock head in the lock head array. The system also includes a spinlock controller including hardware circuitry configured to execute a lock logic responsive to a lock acquire request of the plurality of lock requests, and to execute an unlock logic responsive to a lock release request of the plurality of lock requests.

The utility model discloses a kind of steady spin lock buckle treasures, including fixed base, the fixed base top fixed clamping is equipped with mounting seat, the mounting seat inside is equipped with the limiting of I-shaped wire collector, the mounting seat top is equipped with the positioning member that can drive wire collector rotation, the positioning member top fixed clamping is equipped with rotating upper cover, the mounting seat is equipped with the limiting placement groove of placing wire collector, the middle part of the wire collector and the inner wall of limiting placement groove form wire collection space;The utility model compared with prior art has the advantages that improve locking stability, broaden adaptation scene: by being provided with three winding through holes of wire collector in winding hole, cooperate shoelace cross threading mode, increase the contact area and friction force of shoelace and wire collector, effectively reduce shoelace slip, loose risk;Stability and operation convenience are considered;Anti-rotation and flexible transmission are combined;Assembling maintenance is convenient, protect shoelace.

An interlocking pin free-spinning lock body and its key of the present invention belong to the technical field of locks, and particularly relate to a free-spinning lock body and a key with interlocking pins. The inside of the lock shell assembly has a cavity, in which an inner lock core assembly and an outer lock core assembly are successively arranged, and the rear end of the outer lock core assembly is connected to the output assembly; the key of the interlocking pin free-spinning lock body is provided with a key rack gear, and several key rack components are arranged inside the key rack gear. The key rack components correspond one by one to the through holes on the front inner lock core of the interlocking pin free-spinning lock body, and the several key rack components. The purpose of the present invention is to provide an interlocking pin free-spinning lock head and a key, which solve the problems that ordinary lock cores are easily violently opened by unlocking tools, the pins or blades are separately arranged and are easily cracked to open the lock core and the mutual opening rate is relatively high. At the same time, problems such as low strength of the lock are solved.

The invention discloses an optimization method for solving TCP (Transmission Control Protocol) connection reset caused by multiple identical SYN packets, which comprises the following steps of: storing a first HASH table and a second HASH table, the first HASH table comprising a plurality of linked lists, and the second HASH table comprising a plurality of spin locks; the client sends a to-be-processed SYN packet to the server; the server receives a to-be-processed SYN packet and obtains a corresponding linked list and a spin lock; the server side traverses the corresponding linked list and compares the connection information; if the same connection information exists, discarding the SYN packet to be processed and releasing the spin lock; if the same connection information does not exist, marking the to-be-processed SYN packet as a processed SYN packet, storing the connection information to a corresponding linked list, and releasing the spin lock; the server sends the obtained SYN-ACK packet to the client side; the client side receives the SYN-ACK packet; the client obtains an ACK packet and sends the ACK packet to the server; and the server receives the ACK packet.

Techniques can include: thread TH1 acquiring a spinlock; while TH1 holds the spinlock, adding threads TH2 and TH3 to a wait queue based on a FIFO (first in first out) ordering in which threads attempt to acquire the spinlock, where TH1, TH2 and TH3 respectively have positions P1, P2 and P3 in the FIFO ordering; while TH1 holds the spinlock, pre-empting TH2; while TH2 is inactive and waiting at P2 in the FIFO ordering of the queue, TH1 releasing the spinlock; detecting that the spinlock is free and that TH3 is waiting in the queue at P3, where TH2 is next, in the FIFO ordering of threads in the queue, to acquire the spinlock after released by TH1; and responsive to said detecting, performing first processing including: cancelling the second position or index P2 of TH2 in the FIFO ordering; and TH3 acquiring the spinlock.

The utility model relates to the technical field of cover locking and unlocking, disclose a cover locking and unlocking device, including electronic shell, storehouse cover, spin lock spare and coin lock spare, electronic shell has battery compartment, and battery compartment is used for placing battery spare, and storehouse cover is used for covering battery compartment, and electronic shell has cover lock groove, and the inner end of spin lock spare is embedded cover lock groove, and spin lock spare is in locking state or unlocking state through cover lock groove with electronic shell, the outer end of spin lock spare forms spin lock groove, and coin lock spare is used for embedding spin lock groove, and coin lock spare is used for operating spin lock spare rotation for switching locking state or unlocking state. Through the rotation coin lock spare realizes the switching of storehouse cover and unlocking state locking state, and the replacement of battery spare is convenient, and the coin lock spare is more interesting through hand, and the control feeling is stronger, improves the participation of children and improves the hands-on ability of children, and, adopt coin lock spare to realize the locking or unlocking of storehouse cover, and the operation is simple and fast, and the children can realize the assembly and disassembly of storehouse cover independently.

Techniques can include: thread TH1 acquiring a spinlock; while TH1 holds the spinlock, adding threads TH2 and TH3 to a wait queue based on a FIFO (first in first out) ordering in which threads attempt to acquire the spinlock, where TH1, TH2 and TH3 respectively have positions P1, P2 and P3 in the FIFO ordering; while TH1 holds the spinlock, pre-empting TH2; while TH2 is inactive and waiting at P2 in the FIFO ordering of the queue, TH1 releasing the spinlock; detecting that the spinlock is free and that TH3 is waiting in the queue at P3, where TH2 is next, in the FIFO ordering of threads in the queue, to acquire the spinlock after released by TH1; and responsive to said detecting, performing first processing including: cancelling the second position or index P2 of TH2 in the FIFO ordering; and TH3 acquiring the spinlock.

The application belongs to the technical field of computer system software, and particularly relates to a task binding scheduling mode operating system lock-free cross-core communication method, which is established on a special queue matrix independent queue structure under the task binding mode scheduling; the sending processor core and the receiving processor core operate the independent queue in a lock-free mode; the application provides a task binding scheduling mode operating system lock-free cross-core communication mechanism, and can realize the cross-core communication without spin lock or mutual exclusion between the multiple cores of the operating system under the task binding scheduling mode.

The utility model relates to the field of anchoring parts, in particular to a spin locking type expansion anchor bolt assembly. Comprising an expansion body and an expansion nail, the expansion body comprises a pan head and an expansion sleeve fixedly arranged with the pan head, the expansion sleeve comprises a radial expansion part and an axial contraction part located below the radial expansion part, and an inlet allowing the expansion nail to penetrate into the expansion sleeve is formed in the pan head; a plurality of expansion top rings protruding in the radial direction are arranged on the periphery of the expansion nail, the interior of the radial expansion part can protrude in the radial direction under the compression of the expansion top rings, external threads are further arranged on the periphery of the lower portion of the expansion nail, an extrusion part is further arranged at the position, below the axial contraction part, of the expansion sleeve, and internal threads are arranged in the interior of the extrusion part. The outer diameter of the nail head of the expansion nail is larger than the inner diameter of the inlet, and the expansion nail is shorter than the expansion sleeve. According to the invention, the drawing bearing capacity can be improved.

The embodiment of the invention provides a system performance optimization method, device and equipment and a computer program product, a system comprises multiple threads used for accessing shared resources, the multiple threads correspond to spin locks, and the system performance optimization method comprises the steps that in the process that the multiple threads compete for the spin locks, the multiple threads compete for the spin locks; obtaining a reference spin frequency of spin operation performed by a single thread in the plurality of threads, wherein the reference spin frequency is related to a lower limit value of system overhead; and regulating and controlling an event of competing for the spin lock by a single thread on the basis of the reference spin frequency so as to optimize the performance of the system. In the embodiment, the thread can be effectively controlled to carry out spin waiting operations of different times based on the reference spin times, and particularly, unnecessary spin operations carried out in different scenes can be reduced, so that the overall performance of a system can be improved, the total overhead of the system can be optimized, the utilization rate of CPU resources can also be ensured, and the user experience is improved. And the practicability of the method is improved.

The application provides a spin lock deadlock detection method of a multi-core operating system, and the method comprises the following steps: acquiring an operating system processor core set, and sequentially searching variables of each processor core; removing processor cores without spin lock information to be acquired in the variables to form a to-be-detected core set; using a bitmap dyeing method to cyclically search whether a processor core running a detection program in the to-be-detected core set acquires a spin lock, if yes, a deadlock occurs, if not, the processor core is removed, and other processor cores are sequentially detected until the to-be-detected core set is empty, the multi-core operating system does not have a deadlock, and the detection ends. The method designed by the application has the advantages of high efficiency, accuracy, simplicity and convenience, can detect a deadlock problem as early as possible and timely feedback, and enables a user to take corresponding deadlock release measures according to a feedback result, so that the system can continue to run.

The present invention discloses an optimized method for solving TCP connection reset caused by multiple identical SYN packets, which includes the following steps: saving a first HASH table and a second HASH table, where the first HASH table includes multiple linked lists and the second HASH table includes multiple spin locks; the client sends a SYN packet to be processed to the server; the server receives the SYN packet to be processed and obtains the corresponding linked list and spin lock; the server traverses the corresponding linked list and compares the connection information; if there is identical connection information, discard the SYN packet to be processed and release the spin lock; if there is no identical connection information, mark the SYN packet to be processed as a processed SYN packet, store the connection information in the corresponding linked list, and then release the spin lock; the server sends the SYN-ACK packet to the client; the client receives the SYN-ACK packet; the client obtains the ACK packet and sends it to the server; the server receives the ACK packet.

The invention provides a three-gear key knob, and belongs to the technical field of power equipment control. Comprising an upper cover and a base, the upper cover and the base are used in cooperation, a spin lock body is installed in the middle of the base and penetrates through the upper cover, the spin lock body comprises a middle base, a lock cylinder is rotationally installed on the inner wall of the middle base and used in cooperation with an external key, and a position adjusting mechanism is installed at the bottom of the lock cylinder. Precise locking and clear hand feeling feedback of gears are achieved through cooperation of the position adjusting mechanism and the gear push rod, connection and disconnection of all circuits in the control circuit are changed through cooperation of the cam block and the contact push rod, meanwhile, the relative position of the cam block and the contact push rod can be locked through cooperation of the positioning wheel and the gear push rod, and the operation is convenient. The stable and fixed gear after adjustment is ensured, gear deviation caused by vibration or mistaken touch is prevented, and then mistaken on-off of a circuit is avoided.

The invention relates to the technical field of communication, and provides a message shunting method, network equipment and a storage medium. The network equipment comprises a network card chip and a plurality of processing cores, and the network card chip shunts received messages so as to cache the received messages to a hardware default queue or a corresponding hardware RSS queue; and each processing core tries to acquire the spin lock of the hardware default queue when executing the shunting task, acquires a plurality of messages from the hardware default queue and performs shunting under the condition that the spin lock is acquired, or turns to execute the forwarding task under the condition that the spin lock is not acquired. According to the invention, the message of the non-standard service and the message of the standard service are shunted in combination with the network card chip and the processing core, and the shunting rate and the forwarding rate of the message are dynamically adjusted to enable the message to be adaptive, so that reasonable utilization of multi-core resources is realized, normal operation of the non-standard service and the standard service is ensured, and the performance of network equipment is improved.

The utility model provides a quick-change interface of a lifting appliance, which is used for connecting a lifting hook and a lifting object, the lifting object is provided with a lifting groove, and the quick-change interface of the lifting appliance comprises a mounting seat and a spin lock component, a lifting ring matched with the lifting hook is arranged on the mounting seat; the spin lock component comprises a spin lock main shaft and a flange sleeve, the flange sleeve is installed on the installation base in a penetrating mode, the spin lock main shaft penetrates through the flange sleeve and is rotationally connected with the flange sleeve, the spin lock main shaft comprises a first section, a matching section and a second section, the matching section is rotationally connected with the flange sleeve, and the first section extends out of the installation base and is located on the same side with the hanging ring; the second section extends out of the other side of the mounting base, and a buckle structure is arranged at one end of the second section; wherein the buckle structure is provided with a first position capable of entering and exiting from the hoisting groove and a second position capable of being locked in the hoisting groove, and the technical problems that a crane and a hoisted object are prone to unhooking, and remote butt joint operation is difficult can be solved.

The invention discloses an inertial measurement unit product software three-level architecture and an implementation method thereof, and terminal equipment, a three-level architecture operation scheme is designed for an inertial measurement unit product software product, and meanwhile, software dual backup is designed for internal software, so that online software upgrading can be continued even if abnormal power failure occurs in the software upgrading process and a backup program is started for operation when the product is powered on, and the software upgrading efficiency is improved. According to the method, the software running safety and reliability of the inertial measurement unit product are improved. According to the method, software online upgrading of an inertial measurement unit product is achieved through the monitoring software, the data processing DSP software mainly completes the functions of inertial measurement unit self-alignment, self-detection, self-calibration, spin lock zeroing, spin lock parking and the like, the data processing DSP software does not conduct programming operation on FLASH, and the safety and reliability of FLASH operation are improved. By embedding a domestic operating system, the real-time performance of the system is improved, multi-task parallel operation is supported, meanwhile, the response time of interruption is shortened, and the precision and reliability of an inertial measurement unit product are improved.

The container lifting device comprises a rectangular lifting frame and four or more than four spin locks symmetrically arranged on the rectangular lifting frame, wherein the spin lock comprises a shell fixed on the rectangular lifting frame and a lock tongue movably arranged in the shell, the lock tongue can rotate in the shell and can also move vertically in the shell, and a tapered lock head at the lower end of the lock tongue can be retracted into the lower opening of the shell or extended out of the lower opening. The container lifting device is provided with four or more than four spin locks, and each spin lock can be vertically adjusted, so that the lifting of containers of various specifications can be realized, and the device has good versatility.

The embodiment of the invention relates to the technical field of Internet, and discloses a spin lock design method and device, electronic equipment and a storage medium. According to the embodiment of the invention, at least the problems that the stability of write operation is poor, a timeout mechanism is not set, too long waiting is possibly caused, and the response speed of the system is influenced in an existing CP AUTOSAR OS system can be relieved; by adding the first preset parameter to check and judge whether the spin lock is configured with a lock method related to interruption or not, check whether lock obtaining is overtime or not, read and judge whether the state variable of the spin lock is an even number or not, and other design logics, the process of obtaining the lock through write operation is optimized, the stability of system write operation is improved, and the system response speed is increased.

The utility model relates to a special calibration frame and calibration equipment for a container overload and unbalanced load detection device, which are used for solving the technical problems that weights are randomly placed and have no accurate coordinates in the conventional calibration mode, and the weights may deviate in the calibration process. The crane comprises a suspension arm and a flatcar, and a container spreader is arranged on the suspension arm; the calibration frame is placed on the flatcar, the bottom plate is a rectangular plate, a plurality of positioning structure groups are distributed in the length direction of the rectangular plate, and each positioning structure group comprises a plurality of positioning structures which are uniformly distributed in the width direction; the multiple weights are used for being detachably connected with the corresponding positioning structures respectively. The number of the stand columns is at least four, the stand columns are fixed to the four corners of the bottom plate respectively, and corner fittings used for being matched with a spin lock of a lifting appliance of the container overload and unbalanced load detection device are arranged at the tops of the stand columns.

A child safety seat includes a base, a seat body and a spin lock mechanism. The seat body is movably disposed on the base and switchable relative to the base between two different positions. The spin lock mechanism includes a pivoting component and a locking component. The pivoting component is pivotally connected to one of the base and the seat body. A driving slot is formed on the pivoting component. The locking component is for engaging with and disengaging from the other of the base and the seat body and movably passes through the driving slot along a direction substantially parallel to an engaging direction and a disengaging direction of the locking component. The locking component can be driven by pivoting movement of the pivoting component to disengage from the other of the base and the seat body to allow switching movement of the seat body relative to the base.

According to the intelligent material evidence tracing management system and method, an intelligent storage device adopts a material evidence cabinet / box to be provided with a storage area matching groove, a socket and a spin lock module, an imaging dual-mode monitoring module and a mirror monitoring module are deployed to conduct trajectory tracking, storage safety of physical material evidences is ensured, an RFID chip is arranged in a tamper-proof material bag and packaged in an intelligent material box, and the tamper-proof material bag is used for storing the physical material evidences. The box body communicates with a storage area socket through a bottom plug to control opening and closing, material evidence storage standardization is achieved in cooperation with a mobile terminal, the one-mirror monitoring module is in linkage with a camera through a T-shaped rod frame, opening and closing of equipment are controlled through an electromagnetic lock and fingerprint recognition, and multi-angle tracking of the camera is achieved by combining a stay wire hinge, and the whole scene of a storage cabinet and an investigation table is covered. According to the system, through full-chain digital transformation of material evidence storage, acquisition, monitoring and tracing, and in combination with the block chain and quantum encryption technology, judicial compliance of material evidence management is significantly improved, manual operation risks are reduced, and a reliable material evidence management scheme is provided for public security organization.

The utility model relates to the field of wine boxes, and discloses a locking type packaging wine box which comprises a box body and a box cover, the box cover is installed at the top end of the box body, and a spin lock structure is arranged in the box cover. The spin lock structure comprises a set of inner cavities formed in the box cover, the top ends of the interiors of the inner cavities are movably connected with rotating pieces, three sets of rotating strips are welded to the edges of the rotating pieces, rotating rods are hinged to the ends of each set of rotating strips respectively, and push rods are hinged to the other ends of the rotating rods respectively. According to the wine box with the locking type packaging function, by arranging the spin lock structure, when the box is opened, the rotating piece is rotated anticlockwise through the straight strip, the spring is pulled to contract through linkage of the rotating strip and the rotating rod, the clamping feet are pulled to retract inwards through the push rod, the three sets of clamping feet retract inwards and retreat from the clamping grooves at the same time, locking of the box cover and the box body can be relieved, and the box cover is taken down; the box body and the box cover are triangular prisms, the buckling stability of the three groups of clamping feet is high, the operation is quick and simple, the box cover is not easy to fall off, and the problems that box opening is strenuous and the stability is poor are solved.

The invention provides a container spreader spin lock working state monitoring device and method, and the device comprises a spin lock mechanism which comprises a spin lock housing, a spin lock shaft is arranged at the bottom of the spin lock housing in a penetrating manner, the spin lock shaft can rotate around the axis of the spin lock shaft, a torque sensor is arranged in the spin lock shaft, and a lock head is coaxially fixed to the bottom end of the spin lock shaft through a connecting bottom shaft; three monitoring target spots are arranged on the circumference of the outer ring of the spin lock shaft in an array mode, the supporting circular ring is coaxially fixed to the inner wall of the bottom end of the spin lock shell, and three sets of laser displacement sensors are installed on the inner wall of the supporting circular ring in the circumferential direction and right face the three monitoring target spots respectively; the angle monitoring module is fixed on the top surface of the magnetic ring; the magnetic ring is magnetically fixed at the top end of the first limiting seat; the micro photoelectric sensor is installed on the inner side of the supporting circular ring and right faces a reference target spot on the surface of the spin lock shaft. According to the invention, a non-contact sensing scheme is adopted, so that safety accidents such as container inclination and falling caused by lifting when the spin lock is not locked and the lifting appliance is moved away due to incomplete unlocking are prevented, and the safety of loading and unloading operation is guaranteed.