forked from Lainports/freebsd-ports
c8bcf96c00
When I ported this dockapp 20 years ago, it was not uncommon to peek inside ``struct vmmeter'' and other kernel structures with kvm_read(3) to obtain various data (e.g. page counters). These interfaces had always been fragile and potentially unsafe (due to sgid-to-kmem requirement), so let's switch to sysctl(3) instead as it provides the same data via documented, stable API. Address another problem while here: the dockapp tried to update the window from the signal handler, and no Xlib function can be safely called within a signal handler*. Do as advised and only raise a "need update" flag upon receiving a signal, then gather new data and redraw the window in the main loop. This approach, however, cannot work without modifying process_events() because of the blocking nature of XNextEvent(3) -- put another select(2) call in front so it can relinquish control to the outer loop. [*] http://www-h.eng.cam.ac.uk/help/tpl/graphics/X/signals.html
24 lines
557 B
Makefile
24 lines
557 B
Makefile
PORTNAME= wmmemfree
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PORTVERSION= 0.7
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PORTREVISION= 4
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CATEGORIES= sysutils windowmaker
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MASTER_SITES= SUNSITE/X11/xutils
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MAINTAINER= danfe@FreeBSD.org
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COMMENT= Memory and swap monitoring dockapp
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LICENSE= GPLv2+
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USES= localbase tar:bzip2 xorg
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USE_XORG= x11 xext xpm
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PLIST_FILES= bin/${PORTNAME} man/man1/${PORTNAME}.1.gz
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post-patch:
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@${CP} ${FILESDIR}/mem_freebsd.* ${WRKSRC}
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do-install:
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${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
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${INSTALL_MAN} ${WRKSRC}/${PORTNAME}.1 ${STAGEDIR}${MANPREFIX}/man/man1
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.include <bsd.port.mk>
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