COMMUNICATING MESSAGES BETWEEN PROCESSORS AND A COUPLING FACILITY

    公开(公告)号:CA2086691C

    公开(公告)日:1997-04-08

    申请号:CA2086691

    申请日:1993-01-05

    Applicant: IBM

    Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

    COMMUNICATING MESSAGES BETWEEN PROCESSORS AND A COUPLING FACILITY

    公开(公告)号:CA2086691A1

    公开(公告)日:1993-10-01

    申请号:CA2086691

    申请日:1993-01-05

    Applicant: IBM

    Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

    Conditional access control
    4.
    发明专利

    公开(公告)号:GB2365561A

    公开(公告)日:2002-02-20

    申请号:GB0030228

    申请日:2000-12-12

    Applicant: IBM

    Abstract: In a multi-user application environment with Java, both codesource access checking and verification of the user who is executing code are employed for access checking. An end user uses a Web browser to access a Web server. An execution thread is established for an end user. The HTTP page and function requested by the user cause the Web application server to invoke a Java Virtual Machine (JVM) which in turn invokes a requested Java servlet. When the Secure Class Loader loads a Java class into the JVM, the code base Uniform URL and the Digital Certificate that was used to sign the class are used by the Secure Class Loader to create the codesource Java object. The JVM includes a Java Security Manager (JSM) class that invokes classes that invoke an underlying system security manager. Conditional access checking includes the capability to control access to resources based on the user and on the Java servlet classes being executed. If the codesource indicated by a Conditional Access List matches the codesource specified in the profile, the system security manager will allow access.

    5.
    发明专利
    未知

    公开(公告)号:BR9301109A

    公开(公告)日:1993-10-05

    申请号:BR9301109

    申请日:1993-03-09

    Applicant: IBM

    Abstract: A mechanism for communicating messages, each including a command and a response, in a network having central processing complexes (CPCs) and one or more coupling facilities. Each coupling facility has a central processor for executing instructions and a main storage. Messages are sent from a message control block in the main storage of the CPC sending the message, and the response to the message is received in a message response block of the CPC without an interrupt to the program being executed by the central processor of the CPC. Each message from a CPC to the coupling facility may include a command and an indicator bit which instructs the coupling facility to execute the command either in synchronism with or asynchronously to the execution of the sending processor. The coupling facility executes the command and returns a response which is received in a message response block of the main storage of the sending CPC without an interrupt to any program being executed by the central processor of that CPC.

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