Program execution order like FIFO queue


 
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Operating Systems Solaris Program execution order like FIFO queue
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Old 05-29-2009
Program execution order like FIFO queue

Hi all:

I have a problem with a C++ service runing on solaris 10. This service only set a signal on oracle table. When the service detect a cut off on the line (tcp/ip), trigger a cobol program for set the signal OFF. When the line is on again, the service trigger the same cobol program for set the signal ON.
This service and program work fine, except when a micro cut occurs. In this scenario, the actions are:

Signal on oracle table is initialized: ON.
Micro cut occurs:
The service trigger a cobol program setting the signal to OFF
The line is ON again:
The service trigger a cobol program setting the signal to ON

But for some reason, the cobol program for set to ON the signal run first (or finish first?) that the cobol program for set to OFF the signal, like show this log:

08:55:044 - Signal set to ON
12:05:011 - Signal set to ON
12:05:012 - Signal set to OFF

Before change the code of my programs, any suggestions about how I take the control of the program execution order?
Thanks in advance
Hernán Castellani
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smf_security(5) 					Standards, Environments, and Macros					   smf_security(5)

NAME
smf_security - service management facility security behavior DESCRIPTION
The configuration subsystem for the service management facility, smf(5), requires privilege to modify the configuration of a service. Priv- ileges are granted to a user by associating the authorizations described below to the user through user_attr(4) and prof_attr(4). See rbac(5). The following authorization is used to manipulate services and service instances. solaris.smf.modify Authorized to add, delete, or modify services, service instances, or their properties. Property Group Authorizations The smf(5) configuration subsystem associates properties with each service and service instance. Related properties are grouped. Groups may represent an execution method, credential information, application data, or restarter state. The ability to create or modify property groups can cause smf(5) components to perform actions that may require operating system privilege. Accordingly, the framework requires appropriate authorization to manipulate property groups. Each property group has a type corresponding to its purpose. The core property group types are method, dependency, application, and frame- work. Additional property group types can be introduced, provided they conform to the extended naming convention in smf(5). The following basic authorizations, however, apply only to the core property group types: solaris.smf.modify.method Authorized to change values or create, delete, or modify a property group of type method. solaris.smf.modify.dependency Authorized to change values or create, delete, or modify a property group of type dependency. solaris.smf.modify.application Authorized to change values or create, delete, or modify a property group of type application. solaris.smf.modify.framework Authorized to change values or create, delete, or modify a property group of type framework. solaris.smf.modify Authorized to add, delete, or modify services, service instances, or their properties. Property group-specific authorization can be specified by properties contained in the property group. modify_authorization Authorizations allow the addition, deletion, or modification of properties within the property group. value_authorization Authorizations allow changing the values of any property of the property group except modify_authorization. The above authorization properties are only used if they have type astring. If an instance property group does not have one of the proper- ties, but the instance's service has a property group of the same name with the property, its values are used. Service Action Authorization Certain actions on service instances may result in service interruption or deactivation. These actions require an authorization to ensure that any denial of service is a deliberate administrative action. Such actions include a request for execution of the refresh or restart methods, or placement of a service instance in the maintenance or other non-operational state. The following authorization allows such actions to be requested: solaris.smf.manage Authorized to request restart, refresh, or other state modification of any service instance. In addition, the general/action_authorization property can specify additional authorizations that permit service actions to be requested for that service instance. The solaris.smf.manage authorization is required to modify this property. Defined Rights Profiles Two rights profiles are included that offer grouped authorizations for manipulating typical smf(5) operations. Service Management A service manager can manipulate any service in the repository in any way. It corresponds to the solaris.smf.manage and solaris.smf.modify authorizations. The service management profile is the minimum required to use the pkgadd(1M) or pkgrm(1M) commands to add or remove software packages that contain an inventory of services in its service manifest. Service Operator A service operator has the ability to enable or disable any service instance on the system, as well as request that its restart or refresh method be executed. It corresponds to the solaris.smf.manage and solaris.smf.modify.framework authorizations. Sites can define additional rights profiles customized to their needs. Remote Repository Modification Remote repository servers may deny modification attempts due to additional privilege checks. See NOTES. SEE ALSO
auths(1), profiles(1), pkgadd(1M), pkgrm(1M), prof_attr(4), user_attr(4), rbac(5), smf(5) NOTES
The present version of smf(5) does not support remote repositories. SunOS 5.10 2 Dec 04 smf_security(5)