CN109885386A - A kind of method, apparatus and electronic equipment of multitask execution - Google Patents
A kind of method, apparatus and electronic equipment of multitask execution Download PDFInfo
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- CN109885386A CN109885386A CN201910004110.8A CN201910004110A CN109885386A CN 109885386 A CN109885386 A CN 109885386A CN 201910004110 A CN201910004110 A CN 201910004110A CN 109885386 A CN109885386 A CN 109885386A
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Abstract
The embodiment of the invention provides a kind of methods that multitask executes, device and electronic equipment, it can be in single thread, use first association's Cheng Zhihang first task being pre-created, and when first association journey ran to for the first particular moment, suspend the operation of first association journey, and in single thread, use second association's the second task of Cheng Zhihang being pre-created, due to when first association's journey is when running to particular moment, meeting switchover operation second assists journey, it realizes in single thread, multiple tasks are alternately performed, it avoids the obstruction due to a certain task and influences the operation of other tasks, improve execution efficiency.
Description
Technical field
The present invention relates to field of computer technology, the method, apparatus and electronics executed more particularly to a kind of multitask is set
It is standby.
Background technique
In the mode of existing computer task processing, it is generally divided into the method for synchronization and asynchronous system, two ways is corresponding
Realization process it is as follows:
The method of synchronization: executing in single thread, during handling first task, if necessary to handle the second task,
It then has to wait for that second task could be handled after first task be disposed, for example, thumbed up in system in mobile terminal,
If after user carries out thumbing up operation, need to could show after obtaining the response of server by the way of synchronous and thumb up figure
Mark.
Asynchronous system: needs execute in multiple threads, during handling first task, if necessary to processing second
A task, it is no longer necessary to until first task is disposed, so that it may selection processing second simultaneously in other threads
Task, such as after user carries out thumbing up operation, can be shown while the response of waiting for server and thumb up icon.
Inventor has found that at least there are the following problems for the prior art in the implementation of the present invention:
The method of synchronization, the same time can only a task, task processing process be easy obstruction, low efficiency, time overhead
Greatly, asynchronous system in task processes, needs multiple threads while running, memory overhead is big.
Summary of the invention
The method, apparatus and electronic equipment for being designed to provide a kind of multitask execution of the embodiment of the present invention, to realize
In single thread, multiple tasks are alternately performed, and are avoided the obstruction due to a certain task and are influenced the operations of other tasks, improve
Execution efficiency.Specific technical solution is as follows:
The embodiment of the invention provides a kind of methods that multitask executes, which comprises
In single thread, first association's Cheng Zhihang first task being pre-created is used；
When first association journey ran to for the first particular moment, suspend the operation of first association journey；
In single thread, second association's the second task of Cheng Zhihang being pre-created is used.
Further, it tells when first association journey ran to for the first particular moment, suspends the fortune of first association journey
Row, comprising:
When first association journey runs to preset first point of interruption, suspend the operation of first association journey, described the
One point of interruption is the first predeterminated position for interrupting the first association Cheng Yunhang；And/or
When I/O obstruction occurs as the first association Cheng Yunhang, suspend the operation of first association journey.
Further, first association journey includes register context and stack, described when first association journey is run to
When the first particular moment, after the operation for suspending first association journey, further includes:
Save the register context and stack of first association journey；
After second association's second task of Cheng Zhihang for using and being pre-created, further includes:
When second association journey runs to the second particular moment, the operation of pause the second association journey；
The register context and stack for loading first association journey, to restore the operation of first association journey.
Further, described when second association journey ran to for the second particular moment, suspend the fortune of second association journey
Row, comprising:
When second association journey runs to preset second point of interruption, suspend the operation of second association journey, described the
Two points of interruption are the first predeterminated position for interrupting the second association Cheng Yunhang；And/or
When I/O obstruction occurs as the second association Cheng Yunhang, suspend the operation of second association journey.
Further, described in single thread, use first association's Cheng Zhihang first task being pre-created, comprising:
In single thread, using first passing through the first association Cheng Zhihang for calling function coroutine.create () creation in advance
One task；
It is described in single thread, use be pre-created second association the second task of Cheng Zhihang, comprising:
In single thread, using first passing through the second association Cheng Zhihang for calling function coroutine.create () creation in advance
Two tasks.
The embodiment of the invention also provides the device that a kind of multitask executes, described device includes:
First task execution module, for using first association's Cheng Zhihang first task being pre-created in single thread；
First association's journey suspends module, for suspending described first when first association journey ran to for the first particular moment
Assist the operation of journey；
Second task execution module uses second association's the second task of Cheng Zhihang being pre-created in single thread.
Further, first association journey suspends module, specifically for running to preset first when first association journey
When the point of interruption, suspend it is described first association journey operation, first point of interruption be interrupt it is described first association Cheng Yunhang first in advance
If position；And/or suspend the operation of first association journey when generation I/O obstruction as the first association Cheng Yunhang.
Further, first association journey includes register context and stack, described device, further includes:
First memory module, for saving the register context and stack of first association journey；
Second association's journey suspends module, for running to for the second particular moment when second association journey, suspends second association
The operation of journey；
First association's journey recovery device, for loading the register context and stack of first association journey, to restore described
The operation of first association's journey.
Further, second association journey suspends module, specifically for running to preset second when second association journey
When the point of interruption, suspend it is described second association journey operation, second point of interruption be interrupt it is described second association Cheng Yunhang first in advance
If position；And/or suspend the operation of second association journey when generation I/O obstruction as the second association Cheng Yunhang.
Further, the first task execution module is specifically used in single thread, first passes through calling function using pre-
First association's Cheng Zhihang first task of coroutine.create () creation；
Second task execution module is specifically used in single thread, first passes through calling function using pre-
Second association's the second task of Cheng Zhihang of coroutine.create () creation.
The embodiment of the present invention also provides a kind of electronic equipment, including processor, communication interface, memory and communication bus,
Wherein, processor, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes a kind of any of the above-described multitask execution method
The step of.
Present invention implementation additionally provides a kind of computer readable storage medium, storage in the computer readable storage medium
There is computer program, the computer program realizes a kind of step of any of the above-described multitask execution method when being executed by processor
Suddenly.
The embodiment of the invention also provides a kind of computer program products comprising instruction, when it runs on computers
When, so that computer executes the method that a kind of any of the above-described multitask executes.
The method, apparatus and electronic equipment that multitask provided in an embodiment of the present invention executes, can make in single thread
Cheng Zhihang first task is assisted with first be pre-created, and when first association journey ran to for the first particular moment, pause
The operation of first association journey, and in single thread, using second association's the second task of Cheng Zhihang being pre-created, due to when the
For one association's journey when running to particular moment, meeting switchover operation second assists journey, realizes in single thread, the alternating of multiple tasks is held
Row avoids the obstruction due to a certain task and influences the operations of other tasks, improves execution efficiency.
Certainly, implement any of the products of the present invention or method it is not absolutely required at the same reach all the above excellent
Point.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the flow chart of multitask execution method provided by one embodiment of the present invention；
Fig. 2 is the flow chart for the multitask execution method that another embodiment of the present invention provides；
Fig. 3 is the structural schematic diagram of multitask execution apparatus provided by one embodiment of the present invention；
Fig. 4 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to provide the operation that can be avoided the obstruction due to a certain task and influence other tasks, execution efficiency is improved
Scheme, the method, apparatus executed the embodiment of the invention provides a kind of multitask and electronic equipment, below in conjunction with Figure of description
Preferred embodiment of the present invention will be described, it should be understood that preferred embodiment described herein is only used for describing and explaining
The present invention is not intended to limit the present invention.And in the absence of conflict, the spy in the embodiment and embodiment in the application
Sign can be combined with each other.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
S101: in single thread, first association's Cheng Zhihang first task being pre-created is used.
In this step, optionally, first association's journey is pre-created, first association's journey includes register context and stack, wherein the
The register context of one association's journey is used to store the first instruction, address information and register state information etc. when assisting Cheng Yunhang,
The stack of first association's journey is used to store the data informations such as parameter value and local variable required when the first association Cheng Yunhang, preferentially, needle
To different language platform, it can choose different modes and first association's journey be pre-created, for example, being directed to programming language Lua, Ke Yitong
Expanding library coroutine is crossed to realize the creation of association's journey, specifically, can be by calling in expanding library coroutine
Coroutine.creat () function realizes the creation of first item association journey, for C language, Cheng Ku can be assisted to realize by libco
The creation of journey is assisted, specifically, association's journey can be created and initialized by co_create (), can be led to when needing to start association's journey
Crossing association's journey that the starting of calling co_resume () function has been pre-created can also be created in addition to aforesaid way by yield sentence
First association's journey is built, or journey is assisted by greenlet module creation first.
S102: when first association's journey ran to for the first particular moment, the operation of the first association of pause journey.
In this step, the first particular moment can be first point of interruption of pre-set association Cheng Yunhang, be also possible to the
When one association Cheng Zuowei consumer, it is necessary to which the data for obtaining producer's production can continue to run down, and first association's journey waits
At the time of producer's creation data or at the time of first association's journey waits exterior I/O input, i.e. the first particular moment is first
When I/O obstruction occurring when assisting Cheng Yunhang, when first association's journey ran to for the first particular moment, the operation of the first association of pause journey.
S103: in single thread, second association's the second task of Cheng Zhihang being pre-created is used.
In this step, optionally, second association's journey is pre-created, for different language platform, can choose different modes
Second association's journey is pre-created, for example, being directed to programming language Lua, the wound of association's journey can be realized by expanding library coroutine
It builds, specifically, can be by calling coroutine.creat () function in expanding library coroutine to realize that Section 2 assists journey
Creation can assist Cheng Ku to realize the creation of association's journey, specifically, can pass through co_create () for C language by libco
Association's journey is created and initializes, it can be by calling the starting of co_resume () function to be pre-created when needing to start association's journey
Journey is assisted, in addition to aforesaid way, second association's journey can also be created by yield sentence, or pass through greenlet module creation the
Two association's journeys.
The method that above-mentioned multitask provided in an embodiment of the present invention executes, can be in single thread, using being pre-created
First association Cheng Zhihang first task, and when first association journey ran to for the first particular moment when, pause first association journey operation,
And in single thread, using be pre-created second association the second task of Cheng Zhihang, due to when first association journey run to it is specific
When the moment, meeting switchover operation second assists journey, realizes in single thread, multiple tasks are alternately performed, and are avoided due to a certain
The obstruction of business and the operation for influencing other tasks, improve execution efficiency.
In another embodiment of the invention, a kind of multitask execution method is also provided, as shown in Fig. 2, this method includes
Following steps:
S201: in single thread, first association's Cheng Zhihang first task being pre-created is used.
In this step, it can specifically be executed by the way of above-mentioned steps S101 description, be no longer described in detail herein.
S202: when first association's journey ran to for the first particular moment, the operation of the first association of pause journey.
In this step, it can specifically be executed by the way of above-mentioned steps S102 description, be no longer described in detail herein.
S203: the register context and stack of first association's journey are saved.
In this step, first association's journey includes register context and stack, wherein the register context of first association's journey is used for
Instruction, address information and register state information etc. when the first association of storage Cheng Yunhang, the stack of first association's journey is for storing first
Data informations, the register contexts and stack for saving first association's journey such as parameter value and local variable required when Cheng Yunhang is assisted to protect
The data such as store instruction, address and all kinds of parameters in the register context and stack of first association's journey are held, when first association's journey is run to
First point of interruption, for example, first association's Cheng Zhihang yield sentence, by the register context and stack of currently running first association journey
Interior Various types of data is saved to other storage locations, which can return to an address pointer, restores the as later
The register context of one association Cheng Yunhang and the foundation of stack.Preferential, it can be called by the correlation in ucontext in glibc
Save the register context and stack of association's journey.
S204: in single thread, second association's the second task of Cheng Zhihang being pre-created is used.
In this step, it can specifically be executed by the way of above-mentioned steps S103 description, be no longer described in detail herein.
S205: when second association's journey runs to the second particular moment, the operation of the second association of pause journey.
In this step, the second particular moment can be second point of interruption of pre-set association Cheng Yunhang, be also possible to the
When two association Cheng Zuowei consumers, it is necessary to which the data for obtaining producer's production can continue to run down, and second association's journey waits
At the time of producer's creation data or at the time of second association's journey waits exterior I/O input, i.e. the second particular moment is second
When I/O obstruction occurring when assisting Cheng Yunhang, when second association's journey ran to for the second particular moment, the operation of the second association of pause journey.
S206: the register context and stack of the first association of load journey, to restore the operation of first association's journey.
In this step, after second association's journey has timed out operation, in order to restore the operation of first association's journey, it is necessary to first restore
The register context and stack of first association's journey, preferential, first association's journey can be restored by swapcontext in glibc
Register context and stack, operating status when first association's journey being allowed to restore operation suspension, and continue to remain operational.
The method that above-mentioned multitask as shown in Figure 2 provided in an embodiment of the present invention executes, in single thread, using preparatory
First association's Cheng Zhihang first task of creation, and when first association's journey ran to for the first particular moment, the first association of pause journey
Operation, and the register context and stack of first association's journey are saved, and in single thread, use second association's journey being pre-created
The second task is executed, and when second association's journey runs to the second particular moment, the operation of the second association of pause journey, and load first
The register context and stack of association's journey realize in single thread, the alternating of multiple tasks to restore the operation of first association's journey
It executes, avoids the obstruction due to a certain task and influence the operations of other tasks, improve execution efficiency.
Based on the same inventive concept, the method that a kind of multitask provided according to embodiments of the present invention executes, the present invention are real
It applies example and a kind of device that multitask executes also is provided, as shown in figure 3, the device includes:
First task execution module 301, for using the first association Cheng Zhihang being pre-created in single thread
First task；
First association's journey suspends module 302, for when first association's journey ran to for the first particular moment, journey to be assisted in pause first
Operation；
Second task execution module 303 uses second association's the second task of Cheng Zhihang being pre-created in single thread.
Further, first association's journey suspends module 302, specifically for running to preset first point of interruption when first association's journey
When, the operation of the first association of pause journey, first point of interruption is the first predeterminated position for interrupting the first association Cheng Yunhang；And/or when first
When I/O obstruction occurring when assisting Cheng Yunhang, the operation of the first association of pause journey.
Further, first association's journey includes register context and stack, device, further includes:
First memory module 304, for saving the register context and stack of first association's journey；
Second association's journey suspends module 305, for running to the second particular moment, the fortune of the second association of pause journey when second association's journey
Row；
First association's journey recovery device 306, for loading the register context and stack of first association's journey, to restore the first association
The operation of journey.
Further, second association's journey suspends module 305, specifically for running to preset second point of interruption when second association's journey
When, the operation of the second association of pause journey, second point of interruption is the first predeterminated position for interrupting the second association Cheng Yunhang；And/or when second
When I/O obstruction occurring when assisting Cheng Yunhang, the operation of the second association of pause journey.
Further, first task execution module 301 is specifically used in single thread, first passes through calling function using pre-
First association's Cheng Zhihang first task of coroutine.create () creation；
Second task execution module 303 is specifically used in single thread, first passes through calling function using pre-
Second association's the second task of Cheng Zhihang of coroutine.create () creation.
The embodiment of the invention also provides a kind of electronic equipment, as shown in figure 4, include processor 401, communication interface 402,
Memory 403 and communication bus 404, wherein processor 401, communication interface 402, memory 403 are complete by communication bus 404
At mutual communication,
Memory 403, for storing computer program；
Processor 401 when for executing the program stored on memory 403, realizes following steps:
In single thread, first association's Cheng Zhihang first task being pre-created is used；
When first association's journey ran to for the first particular moment, the operation of the first association of pause journey；
In single thread, second association's the second task of Cheng Zhihang being pre-created is used.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..For just
It is only indicated with a thick line in expression, figure, it is not intended that an only bus or a type of bus.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory may include random access memory (Random Access Memory, RAM), also may include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with computer program in storage medium, the computer program realizes that any of the above-described multitask is held when being executed by processor
The step of row method.
In another embodiment provided by the invention, a kind of computer program product comprising instruction is additionally provided, when it
When running on computers, so that computer executes any multitask execution method in above-described embodiment.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to process or function described in the embodiment of the present invention.The computer can be general purpose computer, dedicated meter
Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device,
For electronic equipment, computer readable storage medium, computer program product embodiments, implement since it is substantially similar to method
Example, so being described relatively simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (11)
1. a kind of method that multitask executes, which is characterized in that the described method includes:
In single thread, first association's Cheng Zhihang first task being pre-created is used；
When first association journey ran to for the first particular moment, suspend the operation of first association journey；
In single thread, second association's the second task of Cheng Zhihang being pre-created is used.
2. the method according to claim 1, wherein telling when first association journey ran to for the first particular moment
When, suspend the operation of first association journey, comprising:
When first association journey runs to preset first point of interruption, suspend the operation of first association journey, in described first
Breakpoint is the first predeterminated position for interrupting the first association Cheng Yunhang；And/or
When I/O obstruction occurs as the first association Cheng Yunhang, suspend the operation of first association journey.
3. the method according to claim 1, wherein first association journey includes register context and stack,
It is described when it is described first association journey ran to for the first particular moment when, suspend it is described first association journey operation after, further includes:
Save the register context and stack of first association journey；
After second association's second task of Cheng Zhihang for using and being pre-created, further includes:
When second association journey runs to the second particular moment, the operation of pause the second association journey；
The register context and stack for loading first association journey, to restore the operation of first association journey.
4. according to the method described in claim 3, it is characterized in that, described when second association journey ran to for the second particular moment
When, suspend the operation of second association journey, comprising:
When second association journey runs to preset second point of interruption, suspend the operation of second association journey, in described second
Breakpoint is the first predeterminated position for interrupting the second association Cheng Yunhang；And/or
When I/O obstruction occurs as the second association Cheng Yunhang, suspend the operation of second association journey.
5. according to the method described in claim 3, using the first association being pre-created it is characterized in that, described in single thread
Cheng Zhihang first task, comprising:
In single thread, call the first association Cheng Zhihang of function coroutine.create () creation first using first passing through in advance
Business；
It is described in single thread, use be pre-created second association the second task of Cheng Zhihang, comprising:
In single thread, the second association Cheng Zhihang second of function coroutine.create () creation is called to appoint using first passing through in advance
Business.
6. the device that a kind of multitask executes, which is characterized in that described device includes:
First task execution module, for using first association's Cheng Zhihang first task being pre-created in single thread；
First association's journey suspends module, for suspending first association journey when first association journey ran to for the first particular moment
Operation；
Second task execution module, for using second association's the second task of Cheng Zhihang being pre-created in single thread.
7. device according to claim 6, which is characterized in that first association journey suspends module, is specifically used for when described
When first association's journey runs to preset first point of interruption, suspend the operation of first association journey, first point of interruption is to interrupt
The first predeterminated position of the first association Cheng Yunhang；And/or suspend institute when generation I/O obstruction as the first association Cheng Yunhang
State the operation of first association's journey.
8. device according to claim 6, which is characterized in that first association journey includes register context and stack, institute
State device, further includes:
First memory module, for saving the register context and stack of first association journey；
Second association's journey suspends module, for running to for the second particular moment when second association journey, suspends second association journey
Operation；
First association's journey recovery device, for loading the register context and stack of first association journey, to restore described first
Assist the operation of journey.
9. device according to claim 8, which is characterized in that second association journey suspends module, is specifically used for when described
When second association's journey runs to preset second point of interruption, suspend the operation of second association journey, second point of interruption is to interrupt
The first predeterminated position of the second association Cheng Yunhang；And/or suspend institute when generation I/O obstruction as the second association Cheng Yunhang
State the operation of second association's journey.
10. device according to claim 8, which is characterized in that the first task execution module is specifically used in single line
Cheng Zhong calls the first of function coroutine.create () creation to assist Cheng Zhihang first task using first passing through in advance；
Second task execution module is specifically used in single thread, first passes through calling function using pre-
Second association's the second task of Cheng Zhihang of coroutine.create () creation.
11. a kind of electronic equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processing
Device, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes any method and step of claim 1-5.
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| CN110247984A (en) * | 2019-06-27 | 2019-09-17 | 腾讯科技（深圳）有限公司 | Method for processing business, device and storage medium |
| CN110764745A (en) * | 2019-09-16 | 2020-02-07 | 平安科技（深圳）有限公司 | Variable transmission and collection method, device and computer readable storage medium |
| CN111078323A (en) * | 2019-10-12 | 2020-04-28 | 平安科技（深圳）有限公司 | Coroutine-based data processing method and device, computer equipment and storage medium |
| CN111897667A (en) * | 2020-08-07 | 2020-11-06 | 杭州安恒信息技术股份有限公司 | Asynchronous communication method and device based on event driving and lua corotation |
| CN112162840A (en) * | 2020-09-29 | 2021-01-01 | 曹蕤 | Coroutine processing and managing method based on interrupt reentrant mechanism |
| CN112905267A (en) * | 2019-12-03 | 2021-06-04 | 阿里巴巴集团控股有限公司 | Method, device and equipment for accessing virtual machine to coroutine library |
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