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Top Forums Shell Programming and Scripting Pattern matching in file and then display 10 lines above every time Post 302163110 by ghostdog74 on Thursday 31st of January 2008 04:24:16 AM
Old 01-31-2008
Quote:
Originally Posted by Karthikeyan_113
Its working but performance issue may be there.
I can see that if there are more than 1000 results, it will call heads and tails on the file for more than 1000 times.
 

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XvGetPortAttribute(3)						  libXv Functions					     XvGetPortAttribute(3)

NAME
XvGetPortAttribute - return current port attribute value SYNOPSIS
#include <X11/extensions/Xvlib.h> int XvGetPortAttribute(Display *dpy, XvPortID port, Atom attribute, int p_value); ARGUMENTS
dpy Specifies the connection to the X server. port Specifies the port, associated with the given display, for which the attribute values are to be returned. attribute An atom that identifies the attribute to be queried by this request. Control atoms are obtained using the XInternAtom request with a string from the following table. p_value Pointer to the location where the attribute value is written on return. DESCRIPTION
XvGetPortAttribute(3) returns the current value of the requested port attribute in the integer pointed to by p_value. The attribute is identified using an Atom that equates to the attribute name. The XInternAtom request can be used with one of the strings below to return a matching Atom. ----------------------------------------------------- Attribute String Type Default ----------------------------------------------------- "XV_ENCODING" XvEncodingID Server dependent "XV_HUE" [-1000...1000] 0 "XV_SATURATION" [-1000...1000] 0 "XV_BRIGHTNESS" [-1000...1000] 0 "XV_CONTRAST" [-1000...1000] 0 RETURN VALUES
[Success] Returned if XvGetPortAttribute(3) completed successfully. [XvBadExtension] Returned if the Xv extension is unavailable. [XvBadAlloc] Returned if XvGetPortAttribute(3) failed to allocate memory to process the request. DIAGNOSTICS
[XvBadPort] Generated if the requested port does not exist. [BadMatch] Generated if the requested attribute atom does not specify an attribute supported by the adaptor. SEE ALSO
XvSetPortAttribute(3), XvPortNotify(3) X Version 11 libXv 1.0.5 XvGetPortAttribute(3)
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