公开(公告)号：EP0704796A3

公开(公告)日：1998-07-01

申请号：EP95304188

申请日：1995-06-16

Applicant: IBM

Inventor： MAGEE JAMES MICHAEL ,  SOTOMAYOR GUY GIL JR ,  YOUNGWORTH CHRISTOPHER DEAN

IPC: G06F15/16 ,  G06F9/46 ,  G06F9/54 ,  G06F15/177

CPC classification number: G06F9/468

Abstract: A microkernel interprocess communication subsystem and method provide fast and efficient communication between clients and servers in uniprocessing, multiprocessing, and distributed processing environments. A microkernel operating system includes a capability engine module that manages capabilities or rights to map regions of the memory shared by multiprocessing tasks. There is a wide range of port rights that can be attributed to a task port; various permission levels, security levels, priority levels, processor and resource availability, etc. The capability engine analyses these rights and selectively enables transfers between tasks. In this manner, the capability engine manages the interprocess communication that must take place between the many clients and servers in a Microkernel System, in a fast and efficient manner.

公开(公告)号：AT75070T

公开(公告)日：1992-05-15

申请号：AT87118539

申请日：1987-12-15

Applicant: IBM

Inventor： DIXON JERRY DUANE ,  SOTOMAYOR GUY GIL JR

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0866 ,  G06F12/16 ,  G11B20/18

Abstract: In a DASD caching system, in which pages of sectors of data are stored by reading in a desired sector and prefetching a plurality of adjacent sectors for later access, errors in disk storage media cause error signals to be generated. Such errors are handled by storing indications of which sectors have errors and which do not, and accessing such indications in response to later requests for such sectors. Such indications are stored in each page in the cache. Further, a history is maintained of which pages and sectors therein, were placed in the cache in the past.

公开(公告)号：AT191978T

公开(公告)日：2000-05-15

申请号：AT95304188

申请日：1995-06-16

Applicant: IBM

Inventor： MAGEE JAMES MICHAEL ,  SOTOMAYOR GUY GIL JR ,  YOUNGWORTH CHRISTOPHER DEAN

IPC: G06F15/16 ,  G06F9/46 ,  G06F9/54 ,  G06F15/177

Abstract: A microkernel interprocess communication subsystem and method provide fast and efficient communication between clients and servers in uniprocessing, multiprocessing, and distributed processing environments. A microkernel operating system includes a capability engine module that manages capabilities or rights to map regions of the memory shared by multiprocessing tasks. There is a wide range of port rights that can be attributed to a task port; various permission levels, security levels, priority levels, processor and resource availability, etc. The capability engine analyses these rights and selectively enables transfers between tasks. In this manner, the capability engine manages the interprocess communication that must take place between the many clients and servers in a Microkernel System, in a fast and efficient manner.

公开(公告)号：BE1001066A4

公开(公告)日：1989-06-27

申请号：BE8701439

申请日：1987-12-16

Applicant: IBM

Inventor： DIXON JERRY DUANE ,  SOTOMAYOR GUY GIL JR

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0866 ,  G06F12/16 ,  G11B20/18 ,  G06F ,  G11B

Abstract: Dans un système d'antémémoire DASD dans lequel des pages de secteurs de données sont emmagasinées par lecture dans un secteur adjacents pour un accès ultérieur, des erreurs dans le milieu d'emmagasinage àdisque provoque la génération de signaux d'erreur. Ces erreurs sont traitées par l'emmagasinage d'indications des secteurs qui présentent des erreurs et des sedteurs qui n'en présentent pas, et par l'accès à ces indications en réponses à des demandes ultérieures pour ces secteurs. Ces indicatitons sont emmagasinées dans chaque page de antémémoire. De plus, on maintient unhistorique des pages et des secteurs qu'elle contient et qui ont été précédemment placés dans antémémoire.

公开(公告)号：PH27346A

公开(公告)日：1993-06-08

申请号：PH36534

申请日：1988-02-19

Applicant: IBM

Inventor： DIXON JERRY D ,  SOTOMAYOR GUY GIL JR

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0866 ,  G06F12/16 ,  G11B20/18 ,  G11B20/10

Abstract: In a DASD caching system, in which pages of sectors of data are stored by reading in a desired sector and prefetching a plurality of adjacent sectors for later access, errors in disk storage media cause error signals to be generated. Such errors are handled by storing indications of which sectors have errors and which do not, and accessing such indications in response to later requests for such sectors. Such indications are stored in each page in the cache. Further, a history is maintained of which pages and sectors therein, were placed in the cache in the past.

公开(公告)号：FR2613506A1

公开(公告)日：1988-10-07

申请号：FR8717531

申请日：1987-12-09

Applicant: IBM

Inventor： DIXON JERRY DUANE ,  SOTOMAYOR GUY GIL JR

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0866 ,  G06F12/16 ,  G11B20/18 ,  G06F7/28 ,  G06F11/00

Abstract: In a DASD caching system, in which pages of sectors of data are stored by reading in a desired sector and prefetching a plurality of adjacent sectors for later access, errors in disk storage media cause error signals to be generated. Such errors are handled by storing indications of which sectors have errors and which do not, and accessing such indications in response to later requests for such sectors. Such indications are stored in each page in the cache. Further, a history is maintained of which pages and sectors therein, were placed in the cache in the past.

公开(公告)号：FR2613506B1

公开(公告)日：1990-02-09

申请号：FR8717531

申请日：1987-12-09

Applicant: IBM

Inventor： DIXON JERRY DUANE ,  SOTOMAYOR GUY GIL JR

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0866 ,  G06F12/16 ,  G11B20/18 ,  G06F7/28 ,  G06F11/00

Abstract: In a DASD caching system, in which pages of sectors of data are stored by reading in a desired sector and prefetching a plurality of adjacent sectors for later access, errors in disk storage media cause error signals to be generated. Such errors are handled by storing indications of which sectors have errors and which do not, and accessing such indications in response to later requests for such sectors. Such indications are stored in each page in the cache. Further, a history is maintained of which pages and sectors therein, were placed in the cache in the past.

公开(公告)号：IT8819949D0

公开(公告)日：1988-03-25

申请号：IT1994988

申请日：1988-03-25

Applicant: IBM

Inventor： DIXON JERRY DUANE ,  SOTOMAYOR GUY GIL JR

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0866 ,  G06F12/16 ,  G11B20/18 ,  G06F

Abstract: In a DASD caching system, in which pages of sectors of data are stored by reading in a desired sector and prefetching a plurality of adjacent sectors for later access, errors in disk storage media cause error signals to be generated. Such errors are handled by storing indications of which sectors have errors and which do not, and accessing such indications in response to later requests for such sectors. Such indications are stored in each page in the cache. Further, a history is maintained of which pages and sectors therein, were placed in the cache in the past.

公开(公告)号：CA2147529A1

公开(公告)日：1995-12-23

申请号：CA2147529

申请日：1995-04-21

Applicant: IBM

Inventor： MAGEE JAMES MICHAEL ,  RAWSON FREEMAN LEIGH III ,  SOTOMAYOR GUY GIL JR

IPC: G06F9/46 ,  G06F12/10 ,  G06F12/12 ,  G06F12/14 ,  G06F9/445 ,  G06F12/02

Abstract: A memory management method for a microkernel architecture and the microkernel itself feature template regions which are defined by the microkernel in the memory, as special objects. In the memory management method, after the microkernel is loaded into the memory of a data processing system, it begins creating task containers in the memory. It does this by forming template regions as special objects in the memory, the template regions having a set of attributes. Then, when the microkernel forms a task in the memory, it does so by mapping the template region into the task. The microkernel defines a virtual address space for the task based upon the template region. Later, when the microkernel conducts virtual memory operations on the template regions, the effect of the virtual memory operations is manifested in the task by means of the mapping relationship. In this manner, a single template region can be mapped into multiple tasks, simultaneously. By directing virtual memory operations to the template region on which they will take effect, the sharing of the virtual memory operations is much easier to accomplish since the changes are made to a template region, not to the mapping of the template region within each task.

公开(公告)号：CA2149476A1

公开(公告)日：1995-12-22

申请号：CA2149476

申请日：1995-05-16

Applicant: IBM

Inventor： MAGEE JAMES MICHAEL ,  SOTOMAYOR GUY GIL JR ,  YOUNGWORTH CHRISTOPHER DEAN

IPC: G06F15/16 ,  G06F9/46 ,  G06F9/54 ,  G06F15/177 ,  G06F15/76 ,  G06F13/38

Abstract: A microkernel interprocess communication subsystem and method provide fast and efficient communication between clients and servers in uniprocessing, multiprocessing, and distributed processing environments. A microkernel operating system includes a capability engine module that manages capabilities or rights to map regions of the memory shared by multiprocessing tasks. There is a wide range of port rights that can be attributed to a task port; various permission levels, security levels, priority levels, processor and resource availability, etc. The capability engine analyses these rights and selectively enables transfers between tasks. In this manner, the capability engine manages the interprocess communication that must take place between the many clients and servers in a Microkernel System, in a fast and efficient manner.