01-17-2005
glance RSS/VSS data column
hi guys... i got a problem... i have written a trivial test program which allocates some memory, it waits for a while (enters a loop), and then releases that memory. the problem is that although glance depitcs the memory allocation procedure properly - by updating both RSS and VSS data segments column - something weird is happening during the deletion... both RSS and VSS data segments remain unchanged!!! Should this be happening? thanx in advance...
PS: HP-UX B.11.00
Last edited by xtrix; 01-17-2005 at 10:38 AM..
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plock(2) System Calls Manual plock(2)
NAME
plock() - lock process, text, data, stack, or shared library in memory
SYNOPSIS
DESCRIPTION
The system call allows the calling process to lock the text segment of the process (text lock), its data segment (data lock), or both its
text and data segment (process lock) into memory. Stack segments are also locked when data segments are locked. Shared library text and
shared library data segments (shlib lock) can also be locked. Locked segments are immune to all routine swapping. also allows these seg-
ments to be unlocked.
The effective user ID of the calling process must be a user with the privilege.
op must be one of the following:
Lock text and data segments into memory (process lock)
Lock text segment into memory (text lock)
Lock data segment into memory (data lock)
Remove locks
Lock shared library text and shared library data segments (shared library lock)
Lock text, data and shared library text and shared library data segments
into memory (process and shared library lock)
Lock text, shared library text and shared library data segments into memory
(text and shared library lock)
Lock data, shared library text and shared library data segments into memory
(data and shared library lock)
Although and the family of functions may be used together in an application, each may affect the other in unexpected ways. This
practice is not recommended.
Security Restrictions
Some or all of the actions associated with this system call require the privilege. Processes owned by the superuser have this privilege.
Processes owned by other users may have this privilege, depending on system configuration. See privileges(5) for more information about
privileged access on systems that support fine-grained privileges.
RETURN VALUE
returns the following values:
Successful completion.
Failure.
The requested operation is not performed. is set to indicate the error.
ERRORS
If fails, is set to one of the following values.
op is equal to and a process lock, a text lock, or a data lock already exists on the calling process.
op is equal to and a text lock or process lock already exists on the calling process.
op is equal to and a data lock, or process lock already exists on the calling process.
op is equal to and no type of lock exists on the calling process.
op is equal to and there are no unlocked shared library segments in the calling process.
op is equal to and a process lock, a text lock, or a data lock already exists on the calling process.
op is equal to and a text lock or process lock already exists on the calling process.
op is equal to and a data lock, or process lock already exists on the calling process.
op is not equal to one of the values specified in
is not allowed in a
window. See vfork(2).
There is not enough lockable memory in the system
to satisfy the locking request.
The effective user ID of the calling process
is not a user with the privilege.
EXAMPLES
The following call to locks the calling process in memory:
SEE ALSO
setprivgrp(1M), exec(2), exit(2), fork(2), getprivgrp(2), mlock(2), vfork(2), privileges(5).
STANDARDS CONFORMANCE
plock(2)