CN110162401A - The parallel read method of DWG file, electronic equipment and storage medium - Google Patents
The parallel read method of DWG file, electronic equipment and storage medium Download PDFInfo
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- CN110162401A CN110162401A CN201910439155.8A CN201910439155A CN110162401A CN 110162401 A CN110162401 A CN 110162401A CN 201910439155 A CN201910439155 A CN 201910439155A CN 110162401 A CN110162401 A CN 110162401A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
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Abstract
The invention discloses the parallel read method of DWG file, include the following steps: to traverse the handle table in DWG file；Obtain Data Position and data length of the object in filestream fragment；Corresponding data packet is created according to filestream fragment and the corresponding Data Position of filestream fragment and data length；The producer is added in the corresponding data packet of existing object to line up, and when meeting preset condition, by the producer line up in data-bag interacting line up to consumer；Multiple worker threads are created, so that the data packet in worker thread access consumer queue, by the dependence data encapsulation in data packet and will not support the data packet of the object read parallel that delay disposal queue is added；The data packet of delay disposal queue is parsed, and the object data in data packet is modified according to data encapsulation.The present invention uses Dynamic delay processing mode, so that reading parallel, DWG file type is more, the opening efficiency of promotion file reading speed and DWG file.
Description
Technical field
The present invention relates to a kind of cad technique field more particularly to a kind of parallel read method of DWG file, electronic equipment and
Storage medium.
Background technique
Currently, CAD is CAD (Computer Aided Design) software, be using computer and its
Graphics device helps designer to be designed work.And DWG is the graphic file extension name of CAD software .dwg be two dimension or
3-D graphic archives.
But currently existing scheme has the following deficiencies:
DWG file reads the reading manner for generalling use single thread at present, time-consuming when reading bigger DWG file
It is long, user experience is influenced, causes working efficiency low.And the parallel reading DWG file currently proposed in order to solve this problem
Method be for rely on data object do not support to read parallel, cause support type it is on the low side, when in DWG file there are it is more according to
When relying the object of data, effect and single thread difference are little.
Summary of the invention
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of DWG file sides of reading parallel
Method can solve and read that type is few, ineffective technical problem parallel in the prior art.
The second object of the present invention is to provide a kind of electronic equipment, can solve and read type parallel in the prior art
Less, ineffective technical problem.
The third object of the present invention is to provide a kind of computer readable storage medium, can solve parallel in the prior art
Read that type is few, ineffective technical problem.
An object of the present invention adopts the following technical scheme that realization:
The parallel read method of DWG file, which comprises the steps of:
Traversal step: the handle table in DWG file is successively traversed；The handle table includes several handles, the handle
For the unique identifier of object；
Obtaining step: Data Position and data length of the object currently traversed in filestream fragment are obtained；
Foundation step: according to the Data Position and data of the filestream fragment and object in the filestream fragment
Length creates corresponding data packet, and the data packet includes the object data and corresponding filestream fragment of the object；
Step is added: the producer is added in the corresponding data packet of existing object and is lined up, and when meeting preset condition, will be given birth to
Production person line up in data-bag interacting line up to consumer；
Read step: creating multiple worker threads, so that the data packet in worker thread access consumer queue, and according to
Object type in data packet judges whether that multi-threaded parallel is supported to read, if so, the object data in the data packet is read,
And delay disposal queue is added in the dependence data encapsulation in data packet；Otherwise, delay disposal queue is added in data packet；
Analyzing step: parsing the data packet of delay disposal queue, and repairs to the object data in data packet
Just.
Further, it is more than threshold value that the preset condition, which is the data packet in producer's queue, and in consumer queue
Data packet is 0.
Further, the threshold value is 100.
Further, before traversal step, also execute judgment step: whether the release format for judging DWG file is R18
More than, if so, executing traversal step, otherwise, the DWG file single thread is read.
Further, in read step, the quantity of worker thread is determined according to the nucleus number of computer CPU.
The second object of the present invention adopts the following technical scheme that realization:
A kind of electronic equipment including memory, processor and stores the meter that can be run on a memory and in processor
Calculation machine program, the processor perform the steps of when executing the computer program
Traversal step: the handle table in DWG file is successively traversed；The handle table includes several handles, the handle
For the unique identifier of object；
Obtaining step: Data Position and data length of the object currently traversed in filestream fragment are obtained；
Foundation step: according to the Data Position and data of the filestream fragment and object in the filestream fragment
Length creates corresponding data packet, and the data packet includes the object data and corresponding filestream fragment of the object；
Step is added: the producer is added in the corresponding data packet of existing object and is lined up, and when meeting preset condition, will be given birth to
Production person line up in data-bag interacting line up to consumer；
Read step: creating multiple worker threads, so that the data packet in worker thread access consumer queue, and according to
Object type in data packet judges whether that multi-threaded parallel is supported to read, if so, the object data in the data packet is read,
And delay disposal queue is added in the dependence data encapsulation in data packet；Otherwise, delay disposal queue is added in data packet；
Analyzing step: parsing the data packet of delay disposal queue, and is encapsulated according to the data in data packet
Object data be modified.
Further, it is more than threshold value that the preset condition, which is the data packet in producer's queue, and in consumer queue
Data packet is 0.
Further, the threshold value is 100.
Further, before traversal step, also execute judgment step: whether the release format for judging DWG file is R18
More than, if so, executing traversal step, otherwise, the DWG file single thread is read.
The third object of the present invention adopts the following technical scheme that realization:
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
The parallel read method of DWG described in the above-mentioned any one of row.
Compared with prior art, the beneficial effects of the present invention are
The present invention uses Dynamic delay processing mode, so that reading DWG file type is more parallel, can maximally utilize meter
Calculation machine resource promotes the opening efficiency of file reading speed and DWG file, promotes user experience.
Detailed description of the invention
Fig. 1 is the flow chart of the parallel read method of DWG file of the invention.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Embodiment one
As shown in Figure 1, needing the present invention provides a kind of parallel read method of DWG file according to object in DWG file
Type determine whether the object supports multi-threaded parallel to read.
Parallel reading proposed by the present invention refers to from DWG file while reading multiple object datas to CAD software system
In.Object type refers to the information that various geometric graphic elements and auxiliary description geometric graphic element are stored in DWG file, in CAD system
In, it is referred to as object, such as straight line, circle, ellipse, text etc..Handle indicates unique identification object instance in a DWG file
Symbol.Handle table is the handle of all object instances in the centrally stored this document in file initial Location Area in DWG file.
Relying on data is that the partial data needs on an object use the data of another object to construct, this partial data is then
Referred to as rely on data.Data packet includes the object data and the corresponding filestream fragment of object of object.Dynamic delay processing
It is the dependence that dynamic judges between object when DWG file is read, the dependence data portion of object is deferred to parallel reading
It is handled later.Productive consumption person's model be in the present invention some thread be responsible for generate data, by other multiple threads Lai
It is responsible for handling these data.The thread for generating data is referred to as the producer, and the thread for handling data is then referred to as consumer.
Present invention read method step parallel for DWG file referring to Fig.1, apply in main thread by description angle.
S1: the handle table in DWG file is successively traversed.Contain multiple objects in DWG file, each object has a sentence
Handle, handle table include whole handles in DWG file.Office's handle by traversing handle table finds corresponding object, to object
Carry out traversal parsing.Such as DWG file includes 90,000 text like arc shape, then each text like arc shape is an object, each
Text like arc shape has a handle, and handle table described here namely contains the handle of 90,000 text like arc shape, and successively traversal is
The handle of 90,000 text like arc shape is traversed one time.
S2: Data Position and data length of the object currently traversed in filestream fragment are obtained；Such as currently
Traversal is the 2nd text like arc shape, then it is long to obtain the corresponding Data Position and data in filestream fragment of the text like arc shape
Degree.
S3: according to the Data Position and data length wound of the filestream fragment and object in the filestream fragment
Corresponding data packet is built, the data packet includes the object data and corresponding filestream fragment of the object.Object data needs
It could accurately be obtained completely according to Data Position and data length.One text like arc shape mainly contains text size, text
Horizontal proportion, text spacing, text style title, text style object ID (relying on data), arc radius and text are away from arc
Spacing these data.Text like arc shape is traversed, that is, is successively read these above-mentioned data, such as reading characters pattern title,
Corresponding text style object is found out from text style table according to text style title, and is assigned to text like arc shape progress
Storage.Data packet namely contains the data that read above-mentioned text like arc shape includes, that is, object data.
S4: the producer is added in the corresponding data packet of existing object and is lined up, and when meeting preset condition, the producer is arranged
During data-bag interacting in team is lined up to consumer；Data packet in consumer queue be used for for subsequent consumption worker thread into
Row processing.
Main thread constantly repeats S1-S4 step, until all handle tables have been traversed.Namely constantly to text like arc shape into
Row traversal, is completed until whole text like arc shape are traversed.In actually executing, S3 step can be exchanged with S4 sequence of steps.
In this step, the preset condition is that the data packet number in producer's queue is more than threshold value, and consumer team
Data packet in column is 0, when meeting this preset condition, then by the data-bag interacting in producer's queue to consumer queue
In.Above-mentioned threshold value is preferably 100, but it is not unique limit 100, such as 101,102 can also be with, threshold value is an empirical value,
It is mainly used for judging " producer thread " (stores work with whether " consumer thread " should deliver and (exchange) work queue
The queue of packet) when a condition, the purpose of this condition be in order to reduce two threads each other excessively frequently communication (line
If communication may require that synchronization between journey, and the degree of parallelism that can reduce multithreading is synchronized, to reduce efficiency).
S5: creating multiple worker threads, so that the data packet in worker thread access consumer queue, and according to data packet
In object type judge whether support multi-threaded parallel read, if so, reading the object data in the data packet, and will count
Delay disposal queue is added according to the dependence data encapsulation in packet, if there is no data are relied on, then object reading finishes；It is no
Then, delay disposal queue is added in data packet.The creation quantity of worker thread is related to the nucleus number of computer CPU, according to calculating
The nucleus number of machine CPU determines the quantity of worker thread.It was found that there is the text like arc shape for relying on data, its corresponding dependence data is added
To delay disposal queue, it is packaged to data are relied on including record pattern title, acquisition text style object, interface function
Deng building delay disposal task, comprising existing object, processing behavior, context data, then by the dependence data after the encapsulation
It is added in delay disposal queue, delay disposal queue is dynamic.
Producer's queue is only related with main thread, is responsible for adding data by main thread.Consumer queue and worker thread
Related, worker thread obtains data packet from consumer queue and carries out reading data.
S6: parsing the data packet of delay disposal queue, and is modified to the object data in data packet.Delay
Processing queue also generates processing table, after main thread finishes all working thread process, traverses delay disposal queue table, obtains
Delay disposal task definition: searching corresponding " text style object " according to " text style title " from text style table, and
It is assigned to text like arc shape storage, improves object data information.
Worker thread is added in delay disposal queue after encapsulating the dependence data of object, finally, main thread is in institute
There is worker thread after treatment, then traverses delay disposal queue and parsed.The dependence data of object are encapsulated by worker thread
After be added in delay queue, and other non-dependent data of object are then directly read in worker thread.
In addition, the object type provided by the invention that is based on is to determine whether read parallel, the dependence data of object into
Row is deferred to after multi-threaded parallel is read and is handled again.Still further aspect first can also carry out version identification to DWG file and sentence
It is disconnected, judge whether the release format of DWG file is R18 or more, if so, traversal step is executed, otherwise, to the DWG file
Single thread is read, and no longer executes above-mentioned steps S1-S6 of the present invention.R18 is the existing release format of DWG file, R18 or more version
The object data of the DWG file of format is stored in a manner of section type, and multi-threaded parallel mode can be supported to read, and R18 with
Under release format its storage organization do not support then to read using multi-threaded parallel.
The present invention can read multiple objects in DWG file parallel, promote the reading efficiency of DWG file, and dynamic is prolonged
Slow processing mode can make more objects support parallel processing, to further promote whole file reading efficiency, finally mention
Rise the efficiency for opening DWG file.
Embodiment two
Embodiment two discloses a kind of electronic equipment, including memory, processor and storage are on a memory and can be
The computer program of processor operation, the processor perform the steps of when executing the computer program
Traversal step: the handle table in DWG file is successively traversed；The handle table includes several handles, the handle
For the unique identifier of object；
Obtaining step: Data Position and data length of the object currently traversed in filestream fragment are obtained；
Foundation step: according to the filestream fragment and the corresponding Data Position of the filestream fragment and described
Data length creates corresponding data packet, and the data packet includes the object data and corresponding filestream fragment of object；
Step is added: the producer is added in the corresponding data packet of existing object and is lined up, and when meeting preset condition, will be given birth to
Production person line up in data-bag interacting line up to consumer；Preset condition is that the data packet in producer's queue is more than threshold value,
And the data packet in consumer queue is 0.Further, threshold value is preferably 100.
Read step: creating multiple worker threads, so that the data packet in worker thread access consumer queue, and according to
Object type in data packet judges whether that multi-threaded parallel is supported to read, if so, the object data in the data packet is read,
And delay disposal queue is added in the dependence data encapsulation in data packet；Otherwise, delay disposal queue is added in data packet；
Analyzing step: parsing the data packet of delay disposal queue, and is encapsulated according to the data in data packet
Object data be modified.
Before traversal step, also execute judgment step: whether the release format for judging DWG file is R18 or more, if
It is then to execute traversal step, otherwise, the DWG file single thread is read.
Embodiment three
Embodiment three discloses a kind of readable computer storage medium, which is somebody's turn to do for storing program
When program is executed by processor, the parallel read method of DWG file of embodiment one is realized.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1.DWG file in parallel read method, which comprises the steps of:
Traversal step: the handle table in DWG file is successively traversed；The handle table includes several handles, and the handle is pair
The unique identifier of elephant；
Obtaining step: Data Position and data length of the object currently traversed in filestream fragment are obtained；
Foundation step: according to the Data Position and data length of the filestream fragment and object in the filestream fragment
Corresponding data packet is created, the data packet includes the object data and corresponding filestream fragment of the object；
Step is added: the producer is added in the corresponding data packet of presently described object and is lined up, and when meeting preset condition, will be given birth to
Production person line up in data-bag interacting line up to consumer；
Read step: creating multiple worker threads, so that the data packet in worker thread access consumer queue, and according to
Object type in the data packet judges whether that multi-threaded parallel is supported to read, if so, reading pair in the data packet
Image data, and delay disposal queue is added in the dependence data encapsulation in the data packet；Otherwise, delay is added in the data packet
Handle queue；
Analyzing step: data packet described in the delay disposal queue is parsed, and to the object data in the data packet
It is modified.
2. the parallel read method of DWG file as described in claim 1, which is characterized in that the preset condition is producer team
Data packet number in column is more than threshold value, and the data packet in consumer queue is 0.
3. the parallel read method of DWG file as claimed in claim 2, which is characterized in that the threshold value is 100.
4. the parallel read method of DWG file as described in claim 1, which is characterized in that before traversal step, also execute and sentence
Disconnected step: whether the release format for judging DWG file is R18 or more, if so, traversal step is executed, otherwise, to the DWG
File single thread is read.
5. the parallel read method of DWG file as described in claim 1, which is characterized in that in read step, according to computer
The nucleus number of CPU determines the quantity of worker thread.
6. a kind of electronic equipment including memory, processor and stores the calculating that can be run on a memory and in processor
Machine program, which is characterized in that the processor performs the steps of when executing the computer program
Traversal step: the handle table in DWG file is successively traversed；The handle table includes several handles, and the handle is pair
The unique identifier of elephant；
Obtaining step: Data Position and data length of the object currently traversed in filestream fragment are obtained；
Foundation step: according to the Data Position and data length of the filestream fragment and object in the filestream fragment
Corresponding data packet is created, the data packet includes the object data and corresponding filestream fragment of the object；
Step is added: the producer is added in the corresponding data packet of existing object and is lined up, and when meeting preset condition, by the producer
During the data-bag interacting lined up is lined up to consumer；
Read step: creating multiple worker threads, so that the data packet in worker thread access consumer queue, and according to data
Object type in packet judges whether that multi-threaded parallel is supported to read, if so, reading the object data in the data packet, and will
Delay disposal queue is added in dependence data encapsulation in data packet；Otherwise, delay disposal queue is added in data packet；
Analyzing step: parsing the data packet of delay disposal queue, and is encapsulated according to the data to pair in data packet
Image data is modified.
7. electronic equipment as claimed in claim 6, which is characterized in that the preset condition is the data packet in producer's queue
Data packet more than threshold value, and in consumer queue is 0.
8. electronic equipment as claimed in claim 7, which is characterized in that the threshold value is 100.
9. electronic equipment as claimed in claim 6, which is characterized in that before traversal step, also execute judgment step: judgement
Whether the release format of DWG file is R18 or more, if so, executing traversal step, otherwise, is read the DWG file single thread
It takes.
10. a kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: the computer program
The DWG file parallel read method as described in claim 1-5 any one is realized when being executed by processor.
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| CN113835902A (en) * | 2021-09-22 | 2021-12-24 | 北京字节跳动网络技术有限公司 | Data processing method and device, computer equipment and storage medium |
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Application publication date: 20190823 |