Shared Memory

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1. Programming

Shared library with acces to shared memory.

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shared memory

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3. Programming

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5. Programming

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6. Programming

help with shared memory

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7. Programming

implement shared memory

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8. Linux

all about shared memory

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9. UNIX for Advanced & Expert Users

Shared memory shortage but lots of unused memory

I am running HP-UX B.11.11. I'm increasing a parameter for a database engine so that it uses more memory to buffer the disk drive (to speed up performance). I have over 5GB of memory not being used. But when I try to start the DB with the increased buffer parameter I get told. "Not...

10. Programming

Shared memory

Dear Reader, Is is necessary to attach / dettach the shared memory segments for write operations , if more than one program is accessing same shared memory segments.. I have used semaphore mutex and still I'm getting segmentation fault when I write to the segment when other program is already...

LEARN ABOUT ULTRIX

ipcrm

ipcrm(1)						      General Commands Manual							  ipcrm(1)

Name
       ipcrm - remove a message queue, semaphore set

Syntax
       ipcrm [options]

Description
       The command removes one or more specified messages, semaphores or shared memory identifiers.

       The details of the removes are described in and The identifiers and keys may be found by

Options
       -q msqid 	   Removes the message queue identifier msqid from the system and destroys the message queue and data structure associated
			   with it.

       -m shmid 	   Removes the shared memory identifier shmid from the system.	The shared memory segment and  data  structure	associated
			   with it are destroyed after the last detach.

       -s semid 	   Removes the semaphore identifier semid from the system and destroys the set of semaphores and data structure associated
			   with it.

       -Q msgkey	   Removes the message queue identifier, created with key msgkey, from the system and destroys the message queue and  data
			   structure associated with it.

       -M shmkey	   Removes  the  shared  memory  identifier, created with key shmkey, from the system.	The shared memory segment and data
			   structure associated with it are destroyed after the last detach.

       -S semkey	   Removes the semaphore identifier, created with key semkey, from the system and destroys the set of semaphores and  data
			   structure associated with it.

See Also
       ipcs(1), msgctl(2), msgget(2), msgop(2), semctl(2), semget(2), semop(2), shmctl(2), shmget(2), shmop(2)

																	  ipcrm(1)

UNIX for Advanced & Expert Users