CN112445628B - Inter-process resource sharing method and device and electronic equipment - Google Patents
Inter-process resource sharing method and device and electronic equipment Download PDFInfo
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- CN112445628B CN112445628B CN201910829328.7A CN201910829328A CN112445628B CN 112445628 B CN112445628 B CN 112445628B CN 201910829328 A CN201910829328 A CN 201910829328A CN 112445628 B CN112445628 B CN 112445628B
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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
- G06F9/54—Interprogram communication
- G06F9/542—Event management; Broadcasting; Multicasting; Notifications
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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
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
Abstract
The disclosure mainly provides an inter-process resource sharing method, an inter-process resource sharing device and electronic equipment. The method comprises the following steps: the current process responds to the data access request to determine the data object to be accessed; the current process sends a first access entry sharing request based on the data object to a system service process so that the system service process distributes the first access entry sharing request to at least one prior process managed by the system service process; the current process obtains a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the at least one prior process, wherein the first shared access entry comprises the data access handle and first collaborative information; the current process accesses the data object using the data access handle according to the first collaborative information. The inter-process resource sharing method provided by the invention can improve the efficiency of collaborative access of a plurality of dependent processes to the same data object.
Description
Technical Field
The disclosure relates to the technical field of computers, and in particular relates to an inter-process resource sharing method, an inter-process resource sharing device and electronic equipment.
Background
In related Android technologies, when a process accesses a data object, the process needs to initiate a data access request to the data object through a contentdesolver and a system service AMS (active management service), where the AMS runs in a system_server service process and is a core service for managing Android components, and is responsible for starting, switching, scheduling of four components in the system and management and scheduling work of application processes. The AMS returns an IContentProvider proxy interface after receiving the data access request, so that the process obtains an access entry Cursor (Cursor, a method for processing data in the Android system, which can browse data one or more lines at a time in the result set for viewing or processing the data in the result set) through the proxy interface.
When a plurality of processes need to cooperatively access the same data object, namely when a plurality of processes have an interdependence relationship with each other in the access operation of the same data object, because the Cursor can not transmit across the processes, each process needs to access the data object through a single Cursor, and when the processes need to cooperatively operate such as sharing access position information, the data access information sharing among the processes is realized by establishing a data synchronization protocol. Because the operation modes of the data objects are various, and unified specifications cannot be formed, the data synchronization protocol is also different according to different requirements, so that the inter-process communication cost is higher.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The embodiment of the disclosure provides an inter-process resource sharing method, device and electronic equipment, which are used for solving the problems of high communication cost and low cooperation efficiency when dependent processes access the same data object due to the limitations and defects of related technologies at least to a certain extent.
According to a first aspect of an embodiment of the present disclosure, there is provided an inter-process resource sharing method, including: the current process responds to the data access request to determine the data object to be accessed; the current process sends a first access entry sharing request based on the data object to a system service process so that the system service process distributes the first access entry sharing request to at least one prior process managed by the system service process; the current process obtains a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the at least one prior process, wherein the first shared access entry comprises the data access handle and first collaborative information; the current process accesses the data object using the data access handle according to the first collaborative information.
In an exemplary embodiment of the present disclosure, further comprising:
and if the current process does not receive the at least one shared access entry within the preset time, acquiring the access entry of the data object, further acquiring a data access handle of the data object through the access entry, and accessing the data object by using the data access handle.
In an exemplary embodiment of the present disclosure, further comprising:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process; the current process encapsulates the data access handle and the second cooperative work information in a preset mode to form a second sharing access entry; the current process passes the second shared access entry to the subsequent process to facilitate the subsequent process accessing the data object through the second shared access entry using the data access handle.
In an exemplary embodiment of the present disclosure, further comprising:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process; the current process encapsulates the data access handle, the second cooperative work information and the communication interface of the current process in a preset mode to form a third sharing access entry; after the current process transmits the shared access interface to the subsequent process, responding to a connection establishment request sent by the subsequent process according to the communication interface, and establishing a communication channel for connecting the subsequent process; the current process obtains third cooperative work information of the subsequent process through the communication channel; and the current process uses the data access handle to access the data object according to the third cooperative work information.
In an exemplary embodiment of the present disclosure, the determining the second cooperative work information transmitted to the subsequent process includes: the current process judges whether the current process is a task management process or not; when the current process is a task management process, the current process acquires cooperative work information of at least one subsequent process through the established communication channel to form second cooperative work information including the cooperative work information of the current process.
In an exemplary embodiment of the present disclosure, further comprising:
the cooperative work information comprises access position information, the later process obtains access position information of a plurality of processes accessing the data object through the second cooperative work information, the access position of the later process is confirmed according to the access position information of the plurality of processes, and the access position information comprises access line number information and access column number information of the process in a current task.
In one exemplary embodiment of the present disclosure, the current process accessing the data object using the data access handle according to the first collaborative information includes:
The current process applies the use authority of the data access handle to the system;
if the data access handle is in an occupied state, the current process waits for the system to distribute the use permission of the data access handle;
and if the data access handle is not in an occupied state, the current process obtains the use authority of the data access handle and accesses the data object through the data access handle, and the data access handle is set to be in the occupied state by the system.
In an exemplary embodiment of the present disclosure, the current process encapsulating the data access handle and the second cooperative information in a preset manner to form a second shared access entry includes: and the current process encapsulates the data access handle and the second cooperative work information based on a preset class to form the second sharing type access entry.
According to a second aspect of an embodiment of the present disclosure, there is provided an inter-process resource sharing apparatus, including: the data object confirming module is used for determining a data object to be accessed according to the data access request by the current process; the request sharing module is configured to send a first access entry sharing request based on the data object to a system service process by the current process, so that the system service process distributes the first access entry sharing request to at least one prior process managed by the system service process; the data access handle acquisition module is configured to acquire a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the current process, wherein the first shared access entry comprises the data access handle and first collaborative information; and the data access module is used for enabling the current process to access the data object by using the data access handle according to the first cooperative work information.
According to a third aspect of the present disclosure, there is provided an inter-process resource sharing apparatus, including: a memory; and a processor coupled to the memory, the processor configured to perform the method of any of the above based on instructions stored in the memory.
According to a fourth aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements the inter-process resource sharing method as set forth in any one of the above.
According to the embodiment of the disclosure, the shared access entry is used for transmitting the cooperative work information and the data access handle to the dependent process at one time, so that the dependent process can obtain the data access handle and the cooperative work information at the same time, the dependence of multiple dependent processes on the same data access is avoided on a complex data synchronization protocol, the multiple dependent processes are prevented from applying for the data access handle respectively, the access efficiency of the multiple dependent processes on the same data object can be effectively improved, the method is not limited by the data synchronization protocol, and the method is suitable for wider application scenes.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
FIG. 1 is a flow chart of a method of inter-process resource sharing in an exemplary embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a flow chart for establishing a shared access portal in an embodiment of the disclosure.
Fig. 3 is a schematic diagram of a setup flow of a shared access portal in yet another embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a flow of establishing a shared access portal in accordance with yet another embodiment of the present disclosure.
FIG. 5 is a flow chart of a current process responding to a data access request in an embodiment of the present disclosure.
FIG. 6 is a flow chart of a current process responding to a second access portal sharing request in an embodiment of the disclosure.
FIG. 7 is a schematic diagram of an interaction process between processes in one embodiment of the present disclosure.
Fig. 8 is a schematic diagram of an application scenario of an embodiment of the present disclosure.
FIG. 9 is a block diagram of an inter-process resource sharing apparatus in one embodiment of the present disclosure.
Fig. 10 is a block diagram of an electronic device in one embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present disclosure. One skilled in the relevant art will recognize, however, that the aspects of the disclosure may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.
Furthermore, the drawings are only schematic illustrations of the present disclosure, in which the same reference numerals denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or process circuits or in different networks and/or processor devices and/or microcontroller devices.
The following describes example embodiments of the present disclosure in detail with reference to the accompanying drawings.
Fig. 1 schematically illustrates a flowchart of a method of inter-process resource sharing in an exemplary embodiment of the present disclosure. Referring to fig. 1, an inter-process resource sharing method 100 may include:
step S11, the current process responds to the data access request to determine the data object to be accessed;
step S12, the current process sends a first access entry sharing request based on the data object to a system service process, so that the system service process distributes the first access entry sharing request to at least one previous process managed by the system service process;
Step S13, the current process obtains a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the at least one previous process, where the first shared access entry includes the data access handle and first cooperative work information;
step S14, the current process accesses the data object using the data access handle according to the first cooperative information.
According to the embodiment of the disclosure, the shared access entry is used for transmitting the cooperative work information and the data access handle to the dependent process at one time, so that the dependent process can obtain the data access handle and the cooperative work information at the same time, the dependence of multiple dependent processes on the same data access is avoided on a complex data synchronization protocol, the multiple dependent processes are prevented from applying for the data access handle respectively, the access efficiency of the multiple dependent processes on the same data object can be effectively improved, the method is not limited by the data synchronization protocol, and the method is suitable for wider application scenes.
The embodiment of the disclosure can be applied to an Android system.
Next, each step of the inter-process resource sharing method 100 will be described in detail.
In step S11, the current process determines the data object to be accessed in response to the data access request.
In some embodiments of the present disclosure, the data object to be accessed may be, for example, a data set of data having multiple data types, such as an address book. For example, in a task of performing image batch processing on an avatar or skin of each contact in an address book, since processing for an image causes a large resource consumption, in order to avoid causing an ook (out of memory) to be generated by an application, the image batch processing task may be allocated to a plurality of processes, and a data access request for the address book may be generated for each process.
In step S12, the current process sends a first access portal sharing request based on the data object to a system service process, so that the system service process distributes the first access portal sharing request to at least one previous process managed by the system service process.
The system service process of the Android system is responsible for scheduling broadcast information, so that after the current process sends the access entry sharing request to the system service process, the system service process can distribute the access entry sharing request to all processes managed by the system service process in a broadcast mode.
In step S13, the current process obtains a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the at least one previous process, where the first shared access entry includes the data access handle and first cooperative information.
In one embodiment, at least one process that is accessing the data object is used as a prior process to the current process, and a shared access portal is returned to the current process in response to the access portal sharing request (the process of establishing the shared access portal is described in detail with respect to the embodiment shown in fig. 2).
In the embodiment of the disclosure, the shared access entry is a data packet that can be transferred between processes in an IPC (Interprosses communication, inter-process communication) manner, where the content of the data packet includes a data access handle of a data object and cooperative work information between processes, and the content of the cooperative work information may include multiple information such as process access location information, access sequence information of a process to data, and the like.
In some embodiments, the shared access portal may further include a communication interface of a previous process, and the current process may establish a communication channel with the previous process according to the communication interface, and in a subsequent operation, mutually transmit cooperative work information with the previous process through the communication channel.
The prior process uses the shared access entrance to transmit cooperative work information to the current process, so that the problems of complicated steps and limited application range caused by establishing various data cooperative protocols can be effectively avoided, and the cooperative work efficiency between dependent processes can be effectively improved; and the prior process packages and sends the data access handle and the cooperative work information to the current process, so that the current process can obtain the data access handle without independently applying for access entries, and the access efficiency of a plurality of dependent processes to the same data object can be greatly improved. In addition, sharing of the data access handles can enable access rights of certain private data to be shared among the dependent processes, the problem that access limitation possibly occurs when each process independently applies for access to the entry is avoided, and the information sharing degree and the coordination degree among the dependent processes are improved.
In some cases, a plurality of prior processes that receive the broadcast return a plurality of shared access entries to the current process at the same time, and at this time, the current process may decide which shared access entry to use according to a preset rule. For example, the shared access entry with the earliest arrival time may be set as the first shared access entry used by the current process, or the shared access entry sent by the previous process may be set as the first shared access entry used by the current process. The selection scheme of the sharing type access entrance can be various, and the person skilled in the art can set the sharing type access entrance according to actual situations.
In another embodiment of the present disclosure, if at least one shared access portal is not received within a preset time after the current process sends the first access portal sharing request, the access portal of the data object may be obtained according to a normal flow, further, a data access handle of the data object is obtained through the access portal, and the data object is accessed through the data access handle. In the embodiment of the disclosure, the access entry is a Cursor in the Android system, and the data access handle is a Cursor Window in the Android system. In the Android system, cursor is a package class, and CursorWindow serving as a data access handle is packaged. The process may access the data object by acquiring the Cursor using CursorWindow encapsulated in Cursor.
The method for acquiring the Cursor according to the normal flow is, for example, applying for a Cursor of a data object by a query method of a ContentProvier (content provider), wherein ContentProvider is one of four components of an Android system, and provides a unified interface for storing and reading data. Since the specific steps for obtaining the access entry of the data object are the same as those of the related art, the disclosure is not repeated herein.
In step S14, the current process accesses the data object using the data access handle according to the first cooperative information.
The first cooperative information is, for example, access location information of a previous process sent to the current process by the previous process, and the current process may determine an access location of the current process according to the access location information, so as to access the data object. In addition, the cooperative work information may further include various information such as a data access scheme, task setting information, etc., which is not particularly limited in the present disclosure.
When the first shared access portal includes a communication interface of a previous process, the current process may establish a communication channel (in an embodiment, for example, an IBinder in an Android system) with the previous process according to the communication interface, and further communicate cooperative information with the previous process for multiple times, and timely adjust an access manner of the data object according to the latest cooperative information.
Since the current process and the previous process use the same data access handle to access the same data object together, in the embodiment of the present disclosure, the use of one data access handle by multiple processes may be implemented through a system mutex lock mechanism.
That is, after the current process obtains the access right of the data access handle through the sharing access entry, when the data object needs to be accessed, the current process can firstly apply for the use right of the data access handle to the system, and if the data access handle is in an occupied state, the current process waits to be allocated with the use right of the data access handle by the system; if the data access handle is not in the occupied state, the current process may obtain the usage rights of the data access handle and access the data object through the data access handle, at which point the data access handle is set by the system to the occupied state.
The setting of the mutual exclusion lock mechanism can allow a plurality of dependent processes to commonly use one data access handle to access the same data object, avoids the complicated flow caused by the fact that the plurality of dependent processes apply for access to the entry respectively, and effectively improves the access efficiency of the plurality of dependent processes to the same data object. The system may allocate the usage rights of the data access handles to a plurality of processes, for example, the usage rights of the data access handles may be allocated according to the sequence of the access time applied by the processes or the priority of the processes, which is not particularly limited in this disclosure.
Fig. 2 is a schematic diagram of a flow chart for establishing a shared access portal in an embodiment of the disclosure.
Referring to fig. 2, in one embodiment, a shared access portal establishment process 200 may include:
step S21, the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process;
step S22, the current process encapsulates the data access handle and the second collaborative information in a preset mode to form a second sharing access entry;
step S23, the current process passes the second shared access entry to the subsequent process, so that the subsequent process accesses the data object through the second shared access entry using the data access handle.
In the embodiment of the present disclosure, the data access handle and the second cooperative information are encapsulated in a preset manner, for example, based on a preset class, so as to generate a second shared access entry inherited from the preset class, for example, a Parcelable class.
The Parcelable class is a serialization interface class for realizing Inter-process operation in the Android system, and serialization can be realized only by a data structure inherited from the Parcelable class and the serialization can be carried out among processes in an IPC (Inter-Process Communication ) mode. Therefore, in the embodiment shown in fig. 2, when the current process receives the second access entry sharing request sent by the subsequent process through broadcasting, the obtained data access handle (or Window) and the second cooperative information generated for the subsequent process are packaged and serialized (packaged as a Parcelable class), so as to generate a second shared access entry inherited from the Parcelable class, so as to realize the transfer of the data access handle and the cooperative information between the processes at the same time. The data access handle may be obtained through an application access portal (Cursor) or through a first shared access portal provided by a previous process.
In the disclosed embodiment, after the current process passes the second shared access entry to the subsequent process, the current process accesses the same data object using the data access handle of the data object with the subsequent process that received the second shared access entry. That is, multiple processes may access the same data object using the same data access handle at the same time.
Fig. 3 is a schematic diagram of a setup flow of a shared access portal in yet another embodiment of the present disclosure.
Referring to fig. 3, when the shared access portal includes a communication interface, the process 300 for establishing the shared access portal may include:
step S31, the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process;
step S32, the current process encapsulates the data access handle, the second cooperative work information and the communication interface of the current process in a preset manner to form a third shared access entry;
step S33, after the current process transmits the shared access interface to the subsequent process, responding to a connection establishment request sent by the subsequent process according to the communication interface, and establishing a communication channel for connecting the subsequent process;
Step S34, the current process obtains the third cooperative work information of the subsequent process through the communication channel;
and step S35, the current process uses the data access handle to access the data object according to the third cooperative work information.
The current process can encapsulate the communication interface of the current process, the data access handle and the second cooperative work information to be sent to the subsequent process into the third shared access inlet, so that a communication channel is established with the subsequent process, convenience is provided for subsequent information communication, and the working scheme of the current process is adjusted according to the cooperative work information communicated with each other in the subsequent work. The communication channel is established, so that complicated steps of communication among processes through various data synchronization protocols in the related technology can be avoided, and the communication efficiency among dependent processes and the working efficiency of the dependent processes are effectively improved.
It can be understood that the communication content between the current process and the subsequent process establishing the communication channel can be various, and the current process and the subsequent process can adjust the data access scheme in time according to the communication content, so as to realize complex cooperative operation.
In some embodiments, when a communication channel is established between processes, a task management process may be provided to uniformly schedule the data access schemes of all dependent processes accessing the same data object.
Fig. 4 is a schematic diagram of a flow of establishing a shared access portal in accordance with yet another embodiment of the present disclosure.
Referring to fig. 4, in case that a task management process is provided, step S31 may include:
step S311, the current process determines whether the current process is a task management process;
step S312, when the current process is a task management process, the current process obtains cooperative information of at least one subsequent process through the established communication channel, so as to form the second cooperative information including the cooperative information of the current process.
When the current process receives a second access entry sharing request sent by a subsequent process in a broadcasting mode, whether the current process is a task management process or not can be firstly judged, and if so, cooperative work information of other dependent processes is obtained through all established communication channels.
In some cases, although the current process is a task management process, no communication channel has been established with other processes (i.e. the subsequent process is the second process accessing the data object), at this time, the current process may only encapsulate its own cooperative information, its own communication interface, and the data access handle of the data object when determining that the number of communication channels is zero, so as to generate the third shared access entry sent to the subsequent process.
Under other conditions, the number of the communication channels is not zero, the current process can acquire cooperative work information of other dependent processes through the communication channels, and at this time, the current process can determine second cooperative work information to be sent to the subsequent process according to the cooperative work information of the current process and the cooperative work information of other processes so as to generate a third sharing access entry to be sent to the subsequent process.
If the current process determines that the current process is not the task management process, the current process does not respond to the second access entry sharing request. In some embodiments, the access portal sharing request can be set by the system service process to only reach the task management process, so that the task management process can realize unified management of all the dependent processes.
In the embodiment of the present disclosure, the cooperative work information may include, for example, access location information, where a task management process is set, access location information of all previous processes that are accessing the data object may be obtained through the cooperative work information when a subsequent process obtains a second shared access entry (where the current process is a task management process) sent by a current process or when the current process obtains a first shared access entry (where the previous process is a task management process) sent by a previous process, and the access location is confirmed according to the access location information. The access location information may include access row number information (row) and access column number information (column) of the process in the current task, among others.
For example, if the current process knows that the access position of the previous process a in the current task is the 0 th to 999 th rows from the first cooperative work information transmitted by the previous process a (task management process), the access position of the previous process B in the current task is the 1000 th to 1999 th rows, and knows that the task itself is accessing 1000 th rows of data from the first cooperative work information or the initial setting of the current process, then it can be determined that the access range of the current process a to the data object is the 2000 th to 2999 th rows.
FIG. 5 is a flow chart of a current process responding to a data access request in an embodiment of the present disclosure.
Referring to FIG. 5, in one embodiment, a process 500 of a current process responding to a data access request may include:
step S501, a data object to be accessed is determined in response to a data access request;
step S502, a first access entry sharing request based on the data object is sent to a system service process;
step S503, judging whether at least one shared access entry is received, if yes, entering step S504, if no, entering step S510;
step S504, determining a first shared access portal in at least one shared access portal;
step S505, a data access handle, first cooperative work information and a communication interface of the first shared access entry are obtained;
Step S506, determining a data access scheme according to the first cooperative work information, and establishing a communication channel with a prior process according to the communication interface so as to receive the latest cooperative work information in real time;
step S507, applying the use authority of the data access handle to the system;
step S508, judging whether to obtain the use authority of the data access handle, if yes, proceeding to step S509 to access the data object by using the data access handle, if no, continuing to wait in the step;
step S510, judging whether the waiting time exceeds a preset value, if so, proceeding to step S511, otherwise, returning to step S503 to continue waiting;
in step S511, an access entry for the data object is applied, and then a data access handle is obtained through the access entry, and the data object is accessed through the data access handle.
FIG. 6 is a flow chart of a current process responding to a second access portal sharing request in an embodiment of the disclosure.
Referring to FIG. 6, in one embodiment, a process 600 of a current process responding to an access second portal sharing request may include:
step S601, receiving a second access entry sharing request from a subsequent process;
step S602, judging whether the task management process is self, if yes, entering step S603, and if not, ending the response;
Step S603, judging whether the number of the communication channels which are established currently is zero, if not, entering step S604, and if yes, entering step S605;
step S604, obtaining cooperative work information of a plurality of dependent processes through the established communication channel, and summarizing the cooperative work information with the cooperative work information to generate second cooperative work information;
step S605, the cooperative work information of the current process is used as second cooperative work information;
step S606, packaging the second cooperative work information, the communication interface of the current process and the data access handle based on the preset class to form a third shared access entry;
in step S607, the third shared access entry is sent to the subsequent process.
FIG. 7 is a schematic diagram of an interaction process between processes in one embodiment of the present disclosure.
Referring to fig. 7, in the process 700 of interaction between processes, assuming that there are no other processes accessing a data object when the process a accesses the data object (i.e., no response is received after broadcasting), in step S701, the process a obtains an access entry (Cursor) of the data object by obtaining a ContentProvider, calling a query method, etc.;
in step S702, the process a obtains a data access handle (Cursor Window) through an access entry (Cursor);
After the process B is started, in step S703, an access entry sharing request is sent by broadcasting, where the access entry sharing request reaches the process a;
in step S704, the process a encapsulates the data access handle (Cursor Window), the collaborative access information and the communication interface, and generates a shared access entry (ParcelableCursor) inherited from the Parcelable class;
in step S705, the process a transfers the shared access entry (partialablecurror) to the process B;
in step S706, the process B acquires a data access handle (Cursor Window) according to a shared access entry (ParcelableCursor);
in step S707, the process a and the process B commonly use this data access handle (Cursor Window) to access the same data object.
Fig. 8 is a schematic diagram of an application scenario of an embodiment of the present disclosure.
Referring to fig. 8, in an application scenario 800, the embodiments of the present disclosure may be applied to a task of performing image batch processing on a head portrait or skin, etc. of each contact in an address book.
The process a is set as a task management process as a first process of accessing the address book 81, and directly obtains a data access handle (Cursor Window) of the address book 81 by obtaining a ContentProvider and calling a query method to obtain an access entry (Cursor), accesses a first area 811 of the address book 81 through the data access handle (Cursor Window), and processes an image in the first area 811.
The process B, as a second process for accessing the address book 81, sends an access entry sharing request in a broadcast manner.
The process a packages and sequences its own work area information, communication interface, and data access handle (curror Window) together after receiving the access entry sharing request to generate a shared access entry 82 (parkablecurror) inherited from the parkable class.
After receiving the shared access entry 82, the process B determines that the own working area is a second area 812 of the address book 81 according to the working area information of the process a and the initial setting of the process B, accesses the second area 812 by using a data access handle (Cursor Window), and processes the image in the second area 812; at the same time, the process B establishes a first communication channel 83 with the process a according to the communication interface of the process a.
The process C is used as a third process for accessing the address book 81, and sends an access entry sharing request in a broadcast manner.
After receiving the access entry sharing request, the process a acquires the working area information of the process B through the first communication channel 83, packages and sequences the working area information of the process a and the working area information of the process B together with the communication interface of the process a and a data access handle (Cursor Window) to generate a shared access entry 84 inherited from the Parcelable class.
After receiving the shared access entry 84, the process C determines that the own working area is the third area 813 of the address book 81 according to the cooperative work information, accesses the third area 813 by using a data access handle (Cursor Window), and processes the image in the third area 813; and simultaneously, the process C establishes a second communication channel 85 with the process A according to the communication interface of the process A.
It should be understood that, as shown in fig. 8, the number of processes accessing the address book 81 may be more in practical application, and the main body determining the access area of each process may be the process a as the task management process, which is not limited to this disclosure.
In summary, in the embodiment of the disclosure, the previous process transmits the data access handle and the cooperative work information to the dependent process at one time, so that a complex operation that multiple dependent processes accessing the same data object apply for the data access entry can be avoided, information communication between the multiple dependent processes is avoided by establishing a data synchronization protocol, and the working efficiency of the multiple dependent processes is effectively improved.
Corresponding to the above method embodiment, the present disclosure further provides an inter-process resource sharing device, which may be used to execute the above method embodiment.
Fig. 9 schematically illustrates a block diagram of an inter-process resource sharing apparatus in an exemplary embodiment of the present disclosure.
Referring to fig. 9, the inter-process resource sharing apparatus 900 may include:
a data object confirmation module 91 configured to determine a data object to be accessed in response to a data access request by a current process;
the request sharing module 92 is configured to send a first access entry sharing request based on the data object to a system service process by the current process, so that the system service process distributes the first access entry sharing request to at least one previous process managed by the system service process;
the data access handle obtaining module 93 is configured to obtain a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the current process, where the first shared access entry includes the data access handle and first collaborative information;
a data access module 94 is arranged for the current process to access the data object using the data access handle in accordance with the first co-operative information.
In an exemplary embodiment of the present disclosure, the data access handle acquisition module 93 is further configured to:
And if the current process does not receive the at least one shared access entry within the preset time, acquiring the access entry of the data object, further acquiring a data access handle of the data object through the access entry, and accessing the data object by using the data access handle.
In an exemplary embodiment of the present disclosure, the method further includes a shared access entry generation module 95 configured to:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process; the current process encapsulates the data access handle and the second cooperative work information in a preset mode to form a second sharing access entry; the current process passes the second shared access entry to the subsequent process to facilitate the subsequent process accessing the data object through the second shared access entry using the data access handle.
In an exemplary embodiment of the present disclosure, the method further includes a shared access entry generation module 95 configured to:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process; the current process encapsulates the data access handle, the second cooperative work information and the communication interface of the current process in a preset mode to form a third sharing access entry; after the current process transmits the shared access interface to the subsequent process, responding to a connection establishment request sent by the subsequent process according to the communication interface, and establishing a communication channel for connecting the subsequent process; the current process obtains third cooperative work information of the subsequent process through the communication channel; and the current process uses the data access handle to access the data object according to the third cooperative work information.
In one exemplary embodiment of the present disclosure, the shared access entry generation module 95 is further configured to: the current process judges whether the current process is a task management process or not; when the current process is a task management process, the current process acquires cooperative work information of at least one subsequent process through the established communication channel to form second cooperative work information including the cooperative work information of the current process.
In an exemplary embodiment of the present disclosure, the cooperative information includes access location information, the subsequent process obtains access location information of a plurality of processes accessing the data object through the second cooperative information, and the access location of the subsequent process is confirmed according to the access location information of the plurality of processes, where the access location information includes access line number information and access column number information of the process at the current task.
In one exemplary embodiment of the present disclosure, the data access module 94 is configured to:
the current process applies the use authority of the data access handle to the system;
if the data access handle is in an occupied state, the current process waits for the system to distribute the use permission of the data access handle;
And if the data access handle is not in an occupied state, the current process obtains the use authority of the data access handle and accesses the data object through the data access handle, and the data access handle is set to be in the occupied state by the system.
In one exemplary embodiment of the present disclosure, the shared access entry generation module 95 is configured to: and the current process encapsulates the data access handle and the second cooperative work information based on a preset class to form the second sharing type access entry.
Since each function of the apparatus 900 is described in detail in the corresponding method embodiments, the disclosure is not repeated herein.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
In an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided.
Those skilled in the art will appreciate that the various aspects of the invention may be implemented as a system, method, or program product. Accordingly, aspects of the invention may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 1000 according to this embodiment of the present invention is described below with reference to fig. 10. The electronic device 1000 shown in fig. 10 is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in fig. 10, the electronic device 1000 is embodied in the form of a general purpose computing device. Components of electronic device 1000 may include, but are not limited to: the at least one processing unit 1010, the at least one memory unit 1020, and a bus 1030 that connects the various system components, including the memory unit 1020 and the processing unit 1010.
Wherein the storage unit stores program code that is executable by the processing unit 1010 such that the processing unit 1010 performs steps according to various exemplary embodiments of the present invention described in the above section of the "exemplary method" of the present specification. For example, the processing unit 1010 may perform step S10 as shown in fig. 1: the current process responds to the data access request to determine the data object to be accessed; step S12: the current process sends a first access entry sharing request based on the data object to a system service process so that the system service process distributes the first access entry sharing request to at least one prior process managed by the system service process; step S13: the current process obtains a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the at least one prior process, wherein the first shared access entry comprises the data access handle and first collaborative information; step S14: the current process accesses the data object using the data access handle according to the first collaborative information.
The memory unit 1020 may include readable media in the form of volatile memory units such as Random Access Memory (RAM) 10201 and/or cache memory unit 10202, and may further include Read Only Memory (ROM) 10203.
The storage unit 1020 may also include a program/utility 10204 having a set (at least one) of program modules 10205, such program modules 10205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 1030 may be representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 1000 can also communicate with one or more external devices 1100 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 1000, and/or with any device (e.g., router, modem, etc.) that enables the electronic device 1000 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 1050. Also, electronic device 1000 can communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 1060. As shown, the network adapter 1060 communicates with other modules of the electronic device 1000 over the bus 1030. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with the electronic device 1000, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible embodiments, the various aspects of the invention may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the invention as described in the "exemplary methods" section of this specification, when said program product is run on the terminal device.
The program product may take the form of a portable compact disc read-only memory (CD-ROM) and comprises program code and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
Furthermore, the above-described drawings are only schematic illustrations of processes included in the method according to the exemplary embodiment of the present application, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (9)
1. An inter-process resource sharing method, comprising:
the current process responds to the data access request to determine the data object to be accessed;
the current process sends a first access entry sharing request based on the data object to a system service process so that the system service process distributes the first access entry sharing request to at least one prior process managed by the system service process;
The current process acquires a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the at least one prior process, wherein the first shared access entry comprises the data access handle and first cooperative work information, and the cooperative work information comprises process access position information;
the current process uses the data access handle to access the data object according to the first cooperative work information;
the method further comprises the steps of:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process;
the current process encapsulates the data access handle, the second cooperative work information and the communication interface of the current process in a preset mode to form a third sharing access entry;
after the current process transmits the shared access entry to the subsequent process, responding to a connection establishment request sent by the subsequent process according to the communication interface, and establishing a communication channel for connecting the subsequent process;
the current process obtains third cooperative work information of the subsequent process through the communication channel;
And the current process uses the data access handle to access the data object according to the third cooperative work information.
2. The inter-process resource sharing method of claim 1, further comprising:
and if the current process does not receive the at least one shared access entry within the preset time, acquiring the access entry of the data object, further acquiring a data access handle of the data object through the access entry, and accessing the data object by using the data access handle.
3. The inter-process resource sharing method according to claim 1 or 2, further comprising:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process;
the current process encapsulates the data access handle and the second cooperative work information in a preset mode to form a second sharing access entry;
the current process passes the second shared access entry to the subsequent process to facilitate the subsequent process accessing the data object through the second shared access entry using the data access handle.
4. The method of inter-process resource sharing according to claim 1, wherein said determining second cooperative work information to be transmitted to the subsequent process includes:
the current process judges whether the current process is a task management process or not;
when the current process is a task management process, the current process acquires cooperative work information of at least one subsequent process through the established communication channel to form second cooperative work information including the cooperative work information of the current process.
5. The method for sharing resources among processes of claim 4, further comprising:
the cooperative work information comprises access position information, the later process obtains access position information of a plurality of processes accessing the data object through the second cooperative work information, the access position of the later process is confirmed according to the access position information of the plurality of processes, and the access position information comprises access line number information and access column number information of the process in a current task.
6. The inter-process resource sharing method of claim 1, wherein the current process accessing the data object using the data access handle according to the first cooperative information comprises:
The current process applies the use authority of the data access handle to the system;
if the data access handle is in an occupied state, the current process waits for the system to distribute the use permission of the data access handle;
and if the data access handle is not in an occupied state, the current process obtains the use authority of the data access handle and accesses the data object through the data access handle, and the data access handle is set to be in the occupied state by the system.
7. The method of inter-process resource sharing according to claim 3, wherein the current process encapsulating the data access handle and the second cooperative information in a preset manner to form a second shared access entry comprises:
the current process encapsulates the data access handle and the second collaborative information based on a preset class to form the second shared access entry, the second shared access entry inheriting from the preset class.
8. An inter-process resource sharing apparatus, comprising:
the data object confirming module is used for determining a data object to be accessed according to the data access request by the current process;
The request sharing module is configured to send a first access entry sharing request based on the data object to a system service process by the current process, so that the system service process distributes the first access entry sharing request to at least one prior process managed by the system service process;
the data access handle acquisition module is configured to acquire a data access handle of the data object according to a first shared access entry in at least one shared access entry returned by the current process, wherein the first shared access entry comprises the data access handle and first collaborative information; the cooperative work information comprises process access position information;
the data access module is configured to access the data object by the current process according to the first cooperative work information by using the data access handle;
the system further comprises a sharing type access entry generating module, which is set as follows:
the current process responds to a second access entry sharing request from a subsequent process, and determines second cooperative work information sent to the subsequent process; the current process encapsulates the data access handle, the second cooperative work information and the communication interface of the current process in a preset mode to form a third sharing access entry; after the current process transmits the shared access entry to the subsequent process, responding to a connection establishment request sent by the subsequent process according to the communication interface, and establishing a communication channel for connecting the subsequent process; the current process obtains third cooperative work information of the subsequent process through the communication channel; and the current process uses the data access handle to access the data object according to the third cooperative work information.
9. An electronic device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the inter-process resource sharing method of any of claims 1-7 based on instructions stored in the memory.
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