CN105468342A - Novel operating system handle management method - Google Patents
Novel operating system handle management method Download PDFInfo
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- CN105468342A CN105468342A CN201410409438.5A CN201410409438A CN105468342A CN 105468342 A CN105468342 A CN 105468342A CN 201410409438 A CN201410409438 A CN 201410409438A CN 105468342 A CN105468342 A CN 105468342A
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Abstract
The invention discloses a novel operating system handle management method. For each type of handle, a linked list is independently established, and handle management is carried out. The novel operating system handle management method is characterized in that each node of the linked list comprises a handle type, a process to which the node belongs, a thread to which the node belongs, the private data of the node, a pointer which points to the previous node of the current node, and the pointer which points to the next node of the current node, wherein the handle type comprises a process handle, a thread handle, a semaphore handle and an event handle. Information stored in the linked list is comprehensive, a user can quickly look up each thread, the semaphore distributed by each process and the event handle; and otherwise, the process and the thread to which the node belongs can be found via each semaphore and event so as to realize system handle management in a real sense and bring great convenience for an operating system to manage and access resources and processes.
Description
Technical field
The present invention relates to a kind of new method for managing OS handle.
Background technology
Along with department of computer science unifies developing rapidly of embedded OS, embedded OS has incorporated our life, except can see in daily life household appliances, industry except the stand-alone product of Military Application, many giant brain systems, are in fact also made up of various little embedded system.Use the product of embedded OS to get more and more, make how to develop high stability, high efficiency operating system and application program become very crucial problem.In an operating system, be no matter to synchronous, control of the access of system resource or process, thread etc., all will relate to the operation to handle.How to strengthen the handle management of system, improve handle access efficiency, improving travelling speed as much as possible, is the problem that researcher is concerned about.
No matter which kind of form is the resource of operating system adopt manage, and stability, the security of efficiency and performance are always in primary.By knowing that to the management of handle application program creates number, the number of thread, the number of semaphore, the number of event of process, parent process and the subprocess of certain process can be searched fast by handle, and the semaphore created wherein and event; Also father's thread of certain thread and sub-thread and the semaphore created and event can be found wherein.
Prior art generally adopts when carrying out handle management and sets up chained list respectively for the handle of each class variable as process, thread etc., and each node of chained list generally comprises the type of handle and points to the pointer of a upper node and point to the pointer of next node.The quantity of information that such data structure and data type comprise is less, is not easy to operating system and carries out resource management and Process flowchart.
Summary of the invention
For solving above-mentioned existing shortcoming, fundamental purpose of the present invention is the new method for managing OS handle providing a kind of practicality, is very easy to operating system to the management of resource and process and access.
For reaching above-described object, a kind of new method for managing OS handle of the present invention takes following technical scheme:
A kind of new method for managing OS handle, respectively chained list is set up to the handle of each type and carries out handle management, it is characterized in that, each node of described chained list comprises, the type of handle, process belonging to node, thread belonging to node, the private data of this node, points to the pointer of a upper node of this node, with the pointer of the next node of this node of sensing, the type of described handle comprises process handle, thread handle, semaphore handle and event handler.
Carry out handle management to comprise the following steps: initialize process, thread, semaphore and event chained list global variable; Establishment process, thread, semaphore and event chain gauge outfit node; Add the node of newly-increased process, thread, semaphore and event handler to corresponding chained list; The node of process, thread, semaphore and the event handler stopped is deleted from corresponding chained list.
During initialization chained list global variable, be zero by the initial value design of each chained list global variable.
Described establishment process, thread, semaphore and event chain gauge outfit node comprise the following steps:
Apply for a process global variable pointer head node;
Apply for a thread global variable pointer head node;
Apply for a semaphore global variable pointer head node;
Apply for an event global variable pointer head node.
The described node by newly-increased process, thread, semaphore and event handler adds corresponding chained list to and comprises the following steps:
According to the process that user creates, process handle node is added in process chained list;
According to the thread that user creates, thread handle node is added in thread chained list;
According to the semaphore that user creates, semaphore handle is added in semaphore linked list;
According to the event that user creates, event handler is added in event chained list.
The node of described deletion process, thread, semaphore and event handler from corresponding chained list comprises the following steps:
According to the process that user deletes, from process chained list, delete corresponding process handle node; According to the thread that user deletes, from thread chained list, delete corresponding thread handle node; According to the semaphore that user deletes, from semaphore linked list, delete corresponding signal amount node;
According to the event that user deletes, from event chained list, delete corresponding event handler node.
Adopt the present invention of as above technical scheme, there is following beneficial effect:
It is relatively more comprehensive that the present invention is kept at information in chained list, user can fast finding to each thread, the semaphore that each process is distributed, event handler; Otherwise, also can find affiliated process and thread by each semaphore, event, thus realize system handle management truly, be very easy to operating system to the management of resource and process and access.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the node data type schematic diagram of handle chained list of the present invention.
Fig. 3 is the method flow schematic diagram that the present invention creates process, thread, semaphore, event node add chained list to.
Fig. 4 is the method flow schematic diagram that the present invention creates process, thread, semaphore, event node add chained list to.
Embodiment
In order to further illustrate the present invention, be described further below in conjunction with accompanying drawing:
The handle of method for managing OS handle of the present invention to each type sets up chained list respectively, and carries out handle management according to chained list.Wherein, the type of handle comprises process handle, thread handle, semaphore handle and event handler.The handle management system structural representation of the chained list composition of Four types handle as shown in Figure 1.A handle corresponding doubly linked list global variable respectively of every type, each node of chained list stores the corresponding information of handle.Then increase or delete respective nodes when new establishment or deletion handle.
The data type of each node of chained list as shown in Figure 2.As seen from Figure 2, each node comprises: the type of handle, the process belonging to node, the thread belonging to node, the private data of this node, points to the pointer of a upper node of this node, and the pointer of the next node of this node of sensing.Because the information be kept in chained list is more comprehensive, therefore user can fast finding to each thread, each course allocation how many semaphores, a how many event handler, also can find affiliated process and thread by each semaphore, event conversely, reach system handle management truly.
Carry out handle bookkeeping mainly to comprise: initialize process, thread, semaphore and event chained list global variable; Establishment process, thread, semaphore and event chain gauge outfit node; Add the node of newly-increased process, thread, semaphore and event handler to corresponding chained list; The node of process, thread, semaphore and the event handler stopped is deleted from corresponding chained list.
Such as, during initialization chained list global variable, be zero by the initial value design of each chained list global variable.Establishment process, thread, semaphore and event chain gauge outfit node comprise the following steps: apply for a process global variable pointer head node, such as defining its relevant variable is peocessh; Apply for a thread global variable pointer head node, such as defining its relevant variable is threadh; Apply for a semaphore global variable pointer head node, such as defining its relevant variable is semah
;apply for an event global variable pointer head node, such as defining its relevant variable is eventh.
Then the initial value of each variable is: peocessh=0; Threadh=0; Eventh=0;
Add the node of newly-increased process, thread, semaphore and event handler the method flow diagram of corresponding chained list to as shown in Figure 3.Visible, newly-increased node is inserted into the head of corresponding chained list, comprises the following steps
:distribute a node by process node size, and be inserted into the head of process chained list; Distribute a node according to thread node size, and be inserted into the head of thread chained list
;distribute a node according to semaphore node size, and be inserted into the head of semaphore linked list; Distribute a node according to event node size, and be inserted into the head of event chained list.Wherein the insertion of chained list is identical with the method for operating of prior art to linked list data structure.
When needing the node of deletion process, thread, semaphore and event handler from corresponding chained list, the process flow diagram of its method as shown in Figure 4, comprises the following steps: from process chained list, find corresponding node according to for deletion process and delete; From thread chained list, find corresponding node according to the thread for deleting and delete; From semaphore linked list, find corresponding node according to the semaphore node for deleting and delete; From event chained list, find corresponding node according to the event for deleting and delete.
Claims (6)
1. a new method for managing OS handle, respectively chained list is set up to the handle of each type and carries out handle management, it is characterized in that, each node of described chained list comprises, the type of handle, process belonging to node, thread belonging to node, the private data of this node, points to the pointer of a upper node of this node, with the pointer of the next node of this node of sensing, the type of described handle comprises process handle, thread handle, semaphore handle and event handler.
2. method for managing OS handle according to claim 1, is characterized in that, carries out handle management and comprises the following steps: initialize process, thread, semaphore and event chained list global variable; Establishment process, thread, semaphore and event chain gauge outfit node; Add the node of newly-increased process, thread, semaphore and event handler to corresponding chained list; The node of process, thread, semaphore and the event handler stopped is deleted from corresponding chained list.
3. method for managing OS handle according to claim 2, is characterized in that, during initialization chained list global variable, is zero by the initial value design of each chained list global variable.
4. method for managing OS handle according to claim 2, is characterized in that, described establishment process, thread, semaphore and event chain gauge outfit node comprise the following steps:
Apply for a process global variable pointer head node;
Apply for a thread global variable pointer head node;
Apply for a semaphore global variable pointer head node;
Apply for an event global variable pointer head node.
5. method for managing OS handle according to claim 2, is characterized in that, the described node by newly-increased process, thread, semaphore and event handler adds corresponding chained list to and comprises the following steps:
According to the process that user creates, process handle node is added in process chained list;
According to the thread that user creates, thread handle node is added in thread chained list;
According to the semaphore that user creates, semaphore handle is added in semaphore linked list;
According to the event that user creates, event handler is added in event chained list.
6. method for managing OS handle according to claim 2, is characterized in that, the node of described deletion process, thread, semaphore and event handler from corresponding chained list comprises the following steps:
According to the process that user deletes, from process chained list, delete corresponding process handle node; According to the thread that user deletes, from thread chained list, delete corresponding thread handle node; According to the semaphore that user deletes, from semaphore linked list, delete corresponding signal amount node;
According to the event that user deletes, from event chained list, delete corresponding event handler node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409438.5A CN105468342A (en) | 2014-08-20 | 2014-08-20 | Novel operating system handle management method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410409438.5A CN105468342A (en) | 2014-08-20 | 2014-08-20 | Novel operating system handle management method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279994A (en) * | 2018-01-22 | 2018-07-13 | 北京仿真中心 | A kind of connection Citrix has issued the automation solution of application exception |
| CN109739468A (en) * | 2019-01-07 | 2019-05-10 | Oppo广东移动通信有限公司 | Running optimizatin method, apparatus, storage medium and terminal device |
| CN109976764A (en) * | 2019-03-28 | 2019-07-05 | 深圳市创联时代科技有限公司 | A kind of handle conversion method |
-
2014
- 2014-08-20 CN CN201410409438.5A patent/CN105468342A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279994A (en) * | 2018-01-22 | 2018-07-13 | 北京仿真中心 | A kind of connection Citrix has issued the automation solution of application exception |
| CN109739468A (en) * | 2019-01-07 | 2019-05-10 | Oppo广东移动通信有限公司 | Running optimizatin method, apparatus, storage medium and terminal device |
| CN109976764A (en) * | 2019-03-28 | 2019-07-05 | 深圳市创联时代科技有限公司 | A kind of handle conversion method |
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Application publication date: 20160406 |