CN101090511B - Release method for death resource - Google Patents
Release method for death resource Download PDFInfo
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- CN101090511B CN101090511B CN200610092219A CN200610092219A CN101090511B CN 101090511 B CN101090511 B CN 101090511B CN 200610092219 A CN200610092219 A CN 200610092219A CN 200610092219 A CN200610092219 A CN 200610092219A CN 101090511 B CN101090511 B CN 101090511B
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Abstract
This invention discloses a method for releasing hang resources including the following steps: the system sets the largest occupation time length of each transient resource, computes each actual occupation time length having been distributed with the transient resource, when there are transient resources with the actual time length larger than the set largest occupation time length, then it is judged that the resource is the hang one and release it, which fully utilizes the character that the largest occupation time length of the transient resource can be foreseen to process the hang resourcesand resume them so as to avoid function loss of the communication system because of the hang transient resources.
Description
Technical field
The present invention relates to method for releasing resource in a kind of communication system, relate to a kind of method for releasing of death resource especially.
Background technology
In communication system, system resource has three types usually: transient state resource, semipermanent resource and permanent resource, wherein:
The transient state resource is meant the resource of provisional use in the communication system.For example, the message transmission module in the communication system distributes the transient state resource to preserve information, carry out respective handling when receiving the message that certain process is come, and after handling, discharges this resource so that this resource is repeated to utilize at once.The maximum occupation time of this resource can be pre-determined by system according to the agreement of using, and also can be pre-determined by system by the method for analyzing, and can also be preestablished by system according to the configuration of software and hardware in the system.
Semipermanent resource is meant by communication system and triggers the resource of distributing and discharging according to the outside input.The maximum occupation time of this resource can not be obtained by system design analysis, must be determined whether discharging by the outside input.For example some resources of controlling call in the communication system are distributed when the user calls out when receiving, and the user discharges during on-hook.
Permanent resource be meant in system starting process distribute, in system's resource that takies and do not need to discharge in service always.
In real-time communication system, the use of transient state resource is very general.For example the message bag resource that each interprocess communication is used in the operating system, call out the control table that distributed for metered call relevant information system in the running etc.But resource is limited in the communication system, and this just requires Limited resources can access reasonable use, thereby for the transient state resource of generally using, should in time discharge when it is not used, so that utilized by other process.
In real-time communication system, the application of transient state resource and release are similar to the application and the release of the Dram in the ordinary procedure design, mainly be to rely on programmer's programming to guarantee, because the complexity of programming, be difficult to guarantee that in the operation conditions of various complexity program can both correctly be finished the work that resource discharges, and if the transient state resource of having applied for is not normally discharged, system can think that this resource is in the state that is being used, thereby forms resource from suspending.If all assignable resources are all hung, system can't need distribute available transient state resource according to process, and this can cause the disabled serious consequence of systemic-function.
At next generation network (Next Generation Network, NGN) in, because busy hour call amount (the Busy Hour Call Atternpt of system, BHCA) very high, the resource from suspending mistake that small probability triggers might cause finally all that system does not have that enough transient state resources are distributed, serious consequences such as resource exhaustion, disabler, network service interruption and system crash.Under this situation, also can only regain the transient state resource usually, can cause a series of problems such as communication disruption, loss of data like this by restarting communication system.These problems all are unacceptable for telco service provider and communication system provider.
Summary of the invention
The present invention promptly is the method for releasing of a kind of death resource of proposing at the shortcoming that exists in the above-mentioned prior art, this method makes and can effectively discharge behind the resource from suspending, prevents the generation because of problems such as telecommunication system resources that resource from suspending causes exhausts, disabler, network service interruption and system crashes.
The present invention realizes by following technical proposals:
A kind of method for releasing of death resource comprises the steps:
The maximum occupation time of each transient state resource of default;
When system receives trigger message, calculate the actual duration that takies that each has distributed the transient state resource;
Actual when taking duration when existing greater than the transient state resource of this transient state resource settings maximum occupation time, judge that this transient state resource is death resource and discharges;
The described actual duration that takies of transient state resource that distributed obtains like this:
(b1) during system assignment transient state resource, obtain and write down that this transient state resource is pairing takies the starter system time;
(b2) trigger message is received by system, obtains system's real-time time of this moment;
(b3) the transient state resource is pairing to be taken the time difference of starter system between the time and was distributed the actual duration that takies of transient state resource distributing of being write down in computing system real-time time and the step (b1).
Further, the maximum occupation time of described each transient state resource is that system sets according to its employed agreement.
Further, the maximum occupation time of described each transient state resource is a system by to after wherein the ruuning situation of each process is analyzed, and uses the situation of transient state resource to set according to each process.
Further, the maximum occupation time of described each transient state resource is that system sets according to the configuration of software and hardware.
Further, described trigger message is that system carries out resource and newly divides timing unsuccessful information.
Further, described trigger message is to set one in the system to follow the overhaul period, newly once follows the inspection information of the zero hour.
Further, described trigger message is the information that the timer timing set in the system arrives.
Further, described timer is one by default, and it is moment in system start-up constantly that described timer starts work for the first time, and current timer timing to information trigger next time timer automatically and start working.
Further, described timer is one by default, it is the moment of carrying out resource allocation in system for the first time constantly that described timer starts work for the first time, and current timer timing to information trigger next time timer automatically and start working.
Further, described timer is by default, each transient state resource is all set the timer of a correspondence, described timer startup work be constantly this timer of system assignment moment of corresponding transient state resource, and when this transient state resource is actual when taking duration less than this transient state resource settings maximum occupation time, current timer timing to information trigger next time timer automatically and start working, described timer quits work when the transient state resource discharges being assigned with of correspondence.
Again further, the timing of described timer is set to the maximum occupation time of corresponding transient state resource.
Compared with prior art, the present invention has following remarkable advantage:
(1) made full use of that transient state resource maximum occupation time is the characteristic that can predict in the system, to the situation that system resource is hung handle, self-recovery and correction;
(2) can prevent generation because of problems such as telecommunication system resources that resource from suspending causes exhausts, disabler, network service interruption and system crashes;
(3) stability and the robustness of system have been improved.
Description of drawings
Fig. 1 is the flow chart that death resource discharges in the specific embodiment of the invention one;
Fig. 2 is the flow chart that death resource discharges in the specific embodiment of the invention two;
Fig. 3 is the flow chart that death resource discharges in the specific embodiment of the invention three;
Fig. 4 is the flow chart that death resource discharges in the specific embodiment of the invention four.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further introduced, but not as a limitation of the invention.
At first explanation a bit: the actual duration that takies of transient state resource is meant actual the take duration of transient state resource in the primary distribution use among the following embodiment, and the maximum occupation time of transient state resource refers to the maximum duration that the transient state resource can take in primary distribution is used.
Embodiment one:
As shown in Figure 1, the method for releasing of the death resource of the embodiment of the invention one may further comprise the steps:
In the present embodiment one, utilize whether the system assignment resource is unsuccessful exists death resource for the trigger condition check system, and the release death resource, the method for releasing of this death resource can not have that enough resources are newly distributed and when having death resource again, in time discharge death resource in system.Not only real-time is better for this method, reliability is also higher.
Embodiment two:
As shown in Figure 2, the method for the death resource of the embodiment of the invention two release may further comprise the steps:
In embodiment two, that sets death resource in the system follows the overhaul period, is whether the trigger condition check system exists death resource with the initial moment of following inspection, and discharges death resource.This mode also is to load to follow the overhaul period when system start-up, can not cause the release of death resource to lose efficacy because of the unusual of program running, the timely release of the system that can guarantee death resource in running.
Embodiment three:
As shown in Figure 3, the method for the death resource of the embodiment of the invention three release may further comprise the steps:
Step 305 is judged actually to take duration surpass to set the pairing transient state resource of maximum occupation time be death resource, discharges this death resource, and removes that this death resource of preserving is pairing to take the starter system time.
In embodiment three, set a timer in the system, start timer during system start-up, utilize timer time to for whether the trigger condition check system exists death resource, and discharge death resource.The method for releasing of this death resource can in time detect and have death resource in the system, and discharges death resource.This method reliability is higher.
Embodiment four:
As shown in Figure 4, the method for releasing of the death resource of the embodiment of the invention four may further comprise the steps:
Step 405 judges that this transient state resource is a death resource, discharges this death resource, and remove to preserve take starter system time T a1.
In the above-described embodiments, be set with a timer in the system, when carrying out resource allocation, system starts timer, utilize timer time to whether having death resource for the trigger condition check system, and release death resource, the method for releasing of this death resource can in time detect and have death resource in the system, and discharges death resource.This method reliability is higher.
Illustrate a bit: if there are a plurality of transient state resources in the system, system can all set the timer of a correspondence to each transient state resource, when some transient state resources are assigned with, its corresponding timer starts, utilize this timer time to checking for trigger condition whether the pairing transient state resource of this timer is death resource, and the release death resource, when some transient state resources were d/d, its corresponding timer quit work.
In the present embodiment, also there is a kind of special form, if the timing of timer is set to the longest duration that takies of corresponding transient state resource, then the timer timing arrives, corresponding transient state resource actual takies the timing that duration is exactly a timer, also promptly in the moment that the timer timing arrives, its corresponding current system time of transient state resource is exactly the timing of timer with taking the time difference of starter system time.If the timer timing arrives, corresponding transient state resource is also occupied, and the actual duration that takies that this transient state resource is described is greater than this transient state resource settings maximum occupation time, and this transient state resource is a death resource, directly discharges.
In another embodiment, in the system timer that recycles can only be set, this timer timing to information trigger the beginning of next time working of timer automatically.When carrying out first transient state resource allocation, start timer, utilize the timer timing,, then discharge this death resource if exist to for whether having death resource in the trigger condition check system.When all transient state resources all were not assigned with in the system, timer quit work.
Need to prove: in above-mentioned all embodiment,, when process initiation application transient state resource, obtain and preserve this transient state resource and carry out that the branch timing is pairing to take the starter system time if system operation is normal; When process finishes, discharge the shared transient state resource of this process immediately, and remove this transient state resource occupation starter system time of preserving.
Compared with prior art, the present invention has following remarkable advantage:
(1) made full use of that transient state resource maximum occupation time is the characteristic that can predict in the system, to the situation that system resource is hung handle, self-recovery and correction;
(2) can prevent generation because of problems such as telecommunication system resources that resource from suspending causes exhausts, disabler, network service interruption and system crashes;
(3) stability and the robustness of system have been improved.
Need to prove that also the method for releasing of the transient state resource that is proposed in the foregoing description is not limited only to real-time communication system, go in all communication systems.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. the method for releasing of a death resource is characterized in that, this method comprises the steps:
The maximum occupation time of each transient state resource of default;
When system receives trigger message, calculate the actual duration that takies that each has distributed the transient state resource;
Actual when taking duration when existing greater than the transient state resource of this transient state resource settings maximum occupation time, judge that this transient state resource is death resource and discharges;
The described actual duration that takies of transient state resource that distributed obtains like this:
(b1) during system assignment transient state resource, obtain and write down that this transient state resource is pairing takies the starter system time;
(b2) trigger message is received by system, obtains system's real-time time of this moment;
(b3) the transient state resource is pairing to be taken the time difference of starter system between the time and was distributed the actual duration that takies of transient state resource distributing of being write down in computing system real-time time and the step (b1).
2. the method for claim 1 is characterized in that, the maximum occupation time of described each transient state resource is that system sets according to its employed agreement.
3. the method for claim 1 is characterized in that, the maximum occupation time of described each transient state resource is a system by to after wherein the ruuning situation of each process is analyzed, and uses the situation of transient state resource to set according to each process.
4. the method for claim 1 is characterized in that, the maximum occupation time of described each transient state resource is that system sets according to the configuration of software and hardware.
5. the method for claim 1 is characterized in that, described trigger message is that system carries out resource and newly divides timing unsuccessful information.
6. the method for claim 1 is characterized in that, described trigger message is to set one in the system to follow the overhaul period, newly once follows the inspection information of the zero hour.
7. the method for claim 1 is characterized in that, described trigger message is the information that the timer timing set in the system arrives.
8. method as claimed in claim 7, it is characterized in that, described timer is one by default, and it is moment in system start-up constantly that described timer starts work for the first time, and current timer timing to information trigger next time timer automatically and start working.
9. method as claimed in claim 7, it is characterized in that, described timer is one by default, it is the moment of carrying out resource allocation in system for the first time constantly that described timer starts work for the first time, and current timer timing to information trigger next time timer automatically and start working.
10. method as claimed in claim 7, it is characterized in that, described timer is by default, each transient state resource is all set corresponding timer, described timer startup work be constantly this timer of system assignment moment of corresponding transient state resource, and when this transient state resource is actual when taking duration less than this transient state resource settings maximum occupation time, current timer timing to information trigger next time timer automatically and start working, described timer quits work when the transient state resource discharges being assigned with of correspondence.
11. method as claimed in claim 10 is characterized in that, the timing of described timer is set to the maximum occupation time of corresponding transient state resource.
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CN200610092219A CN101090511B (en) | 2006-06-14 | 2006-06-14 | Release method for death resource |
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CN101471869B (en) * | 2007-12-27 | 2011-04-20 | 华为技术有限公司 | Method, system and device for processing session |
CN101730247B (en) * | 2008-10-29 | 2012-04-04 | 华为技术有限公司 | Method and device for releasing semi-static scheduling resources and user equipment |
CN102026292B (en) * | 2009-09-18 | 2013-11-06 | 华为技术有限公司 | Resource management method and equipment |
CN107967181B (en) * | 2017-12-19 | 2021-11-16 | 北京小米移动软件有限公司 | Method and device for controlling critical section |
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CN1708141A (en) * | 2004-06-08 | 2005-12-14 | 华为技术有限公司 | Method for realeasing terminal resource in media gateway |
CN1761357A (en) * | 2004-10-15 | 2006-04-19 | 华为技术有限公司 | Method for implementing timing verification of calls between bureaus based on IP of packet |
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CN1708141A (en) * | 2004-06-08 | 2005-12-14 | 华为技术有限公司 | Method for realeasing terminal resource in media gateway |
CN1761357A (en) * | 2004-10-15 | 2006-04-19 | 华为技术有限公司 | Method for implementing timing verification of calls between bureaus based on IP of packet |
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