Article View: comp.sys.ibm.pc.rt
Article #366Re: Memory usage on the RT.
From: Johann Schweigl
Date: Thu, 14 Sep 1989 22:25
Date: Thu, 14 Sep 1989 22:25
28 lines
1413 bytes
1413 bytes
From article <1247@quintus.UUCP>, by mark@quintus.UUCP (Mark Spotswood):
> Is there any way to find out how much swap space is actually left while running,
> so that I can set the break point to a more reasonable value and avoid being
> killed?
VRM provides the information you want in the data segment of the process.
.
.
.
volatile int *freePages = (int *)0xbc;
.
.
printf("number of free 2K pages in pagespace is %d\n",*freePages);
.
.
The volatile int declaration prevents reads to *freePages from being optimized
away by the -O option.
*freePages is modified by the VRM at unpredictable rates (unpredictable as far
as the application program is concerned).
Hope it helps. Bye,
--
------------------------------------------------------------------
EDV Ges.m.b.H Vienna Johann Schweigl
Hofmuehlgasse 3 - 5 USENET: johnny@edvvie.at
A-1060 Vienna, Austria Tel: (0043) (222) 59907 257 (8-19 CET)
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arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!usc!bloom-beacon!eru!luth!sunic!mcsun!tuvie!edvvie!eliza!johnnyReferences:
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!usc!bloom-beacon!eru!luth!sunic!mcsun!tuvie!edvvie!eliza!johnny From: johnny@edvvie.at (Johann Schweigl) Newsgroups: comp.sys.ibm.pc.rt Subject: Re: Memory usage on the RT. Message-ID: <151@eliza.edvvie.at> Date: 14 Sep 89 22:25:06 GMT References: <1247@quintus.UUCP> Organization: Edv GesmbH, Austria/Europa Lines: 28