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    2.
    发明专利
    未知

    公开(公告)号：DE3781406D1

    公开(公告)日：1992-10-01

    申请号：DE3781406

    申请日：1987-06-09

    Applicant: IBM

    Inventor： GANTENBEIN DIETER ,  HAUSER RAINER FRIEDRICH ,  MUMPRECHT EDUARD PETER

    IPC: G06F12/00 ,  G06F9/46 ,  G06F9/52 ,  G06F12/02 ,  G06F15/16 ,  G06F15/177

    Abstract: In response to an initial request (GET) from a first user, indicating the size of the required buffer (LENG-phi), the memory management allocates a basic buffer of the size requested. A first locator (Lphi) is returned to the first user, identifying the basic buffer by a pointer an offset value and a length value. A reference count, which is set initially at one, is opened for the basic buffer. Upon receiving a replication request (REP) from any user for all or part of the basic buffer, identified by a locator, another locator (Li) is returned. This identifies a buffer segment equal to the basic buffer by pointer, offset and length values. The reference count is incremented by one. In response to a release message (RET) for a buffer segment defined by a locator (Li), the respective reference count is decreased by one unit and when it reaches zero, the respective basic buffer is de-allocated.

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