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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>mmap.rd</TITLE>
</HEAD>
<BODY>
<H1><A NAME="label:0">Mmap
</A></H1><!-- RDLabel: "Mmap" -->
<P>
<A HREF="ftp://moulon.inra.fr/pub/ruby/">Download</A>
</P>
<P>
The Mmap class implement memory-mapped file objects
</P>
<H3><A NAME="label:1">WARNING
</A></H3><!-- RDLabel: "WARNING" -->
<P>
<EM>The variables $' and $` are not available with gsub! and sub!</EM>
</P>
<H2><A NAME="label:2">SuperClass
</A></H2><!-- RDLabel: "SuperClass" -->
<P>
Object
</P>
<H2><A NAME="label:3">Included Modules
</A></H2><!-- RDLabel: "Included Modules" -->
<UL>
<LI>Comparable
<LI>Enumerable
</UL>
<H2><A NAME="label:4">Class Methods
</A></H2><!-- RDLabel: "Class Methods" -->
<DL>
<DT><A NAME="new"><CODE>new(<var>file</var>, [<var>mode</var> [, <var>protection</var> [, <var>options</var>]]])</CODE></A><!-- RDLabel: "new" -->
<DD>
<P>
create a new object
</P>
<DL>
<DT><A NAME="label:7"><VAR>file</VAR>
</A><!-- RDLabel: "file" -->
<DD>
<P>
Pathname of the file
</P>
</DD>
<DT><A NAME="label:8"><VAR>mode</VAR>
</A><!-- RDLabel: "mode" -->
<DD>
<P>
Mode to open the file, it can be "r", "w" or "rw"
</P>
</DD>
<DT><A NAME="label:9"><VAR>protection</VAR>
</A><!-- RDLabel: "protection" -->
<DD>
<P>
specify the nature of the mapping
</P>
<DL>
<DT><A NAME="label:11"><VAR>Mmap::MAP_SHARED</VAR>
</A><!-- RDLabel: "Mmap::MAP_SHARED" -->
<DD>
<P>
Creates a mapping that's shared with all other processes
mapping the same areas of the file.
The default value is <VAR>Mmap::MAP_SHARED</VAR>
</P>
</DD>
<DT><A NAME="label:12"><VAR>Mmap::MAP_PRIVATE</VAR>
</A><!-- RDLabel: "Mmap::MAP_PRIVATE" -->
<DD>
<P>
Creates a private copy-on-write mapping, so changes to the
contents of the mmap object will be private to this process
</P>
</DD>
</DL>
</DD>
<DT><A NAME="label:10"><VAR>options</VAR>
</A><!-- RDLabel: "options" -->
<DD>
<P>
Hash. If one of the options <VAR>length</VAR> or <VAR>offset</VAR>
is specified it will not possible to modify the size of
the mapped file.
</P>
<DL>
<DT><A NAME="label:13"><VAR>length</VAR>
</A><!-- RDLabel: "length" -->
<DD>
<P>
Maps <VAR>length</VAR> bytes from the file
</P>
</DD>
<DT><A NAME="label:14"><VAR>offset</VAR>
</A><!-- RDLabel: "offset" -->
<DD>
<P>
The mapping begin at <VAR>offset</VAR>
</P>
</DD>
<DT><A NAME="label:15"><VAR>advice</VAR>
</A><!-- RDLabel: "advice" -->
<DD>
<P>
The type of the access (see #madvise)
</P>
</DD>
</DL>
</DD>
</DL>
</DD>
</DL>
<H2><A NAME="label:5">Methods
</A></H2><!-- RDLabel: "Methods" -->
<DL>
<DT><A NAME="extend"><CODE>extend(<var>count</var>)</CODE></A><!-- RDLabel: "extend" -->
<DD>
<P>
add <VAR>count</VAR> bytes to the file (i.e. pre-extend the file)
</P>
</DD>
<DT><A NAME="madvise"><CODE>madvise(<var>advice</var>)</CODE></A><!-- RDLabel: "madvise" -->
<DD>
<P>
<VAR>advice</VAR> can have the value <VAR>Mmap::MADV_NORMAL</VAR>,
<VAR>Mmap::MADV_RANDOM</VAR>, <VAR>Mmap::MADV_SEQUENTIAL</VAR>,
<VAR>Mmap::MADV_WILLNEED</VAR>, <VAR>Mmap::MADV_DONTNEED</VAR>
</P>
</DD>
<DT><A NAME="mprotect"><CODE>mprotect(<var>mode</var>)</CODE></A><!-- RDLabel: "mprotect" -->
<DD>
<P>
change the mode, value must be "r", "w" or "rw"
</P>
</DD>
<DT><A NAME="msync"><CODE>msync</CODE></A><!-- RDLabel: "msync" -->
<DT><A NAME="flush"><CODE>flush</CODE></A><!-- RDLabel: "flush" -->
<DD>
<P>
flush the file
</P>
</DD>
<DT><A NAME="munmap"><CODE>munmap</CODE></A><!-- RDLabel: "munmap" -->
<DD>
<P>
terminate the association
</P>
</DD>
</DL>
<H3><A NAME="label:6">Other methods with the same syntax than the methods of <VAR>String</VAR>
</A></H3><!-- RDLabel: "Other methods with the same syntax than the methods ofString" -->
<P>
self == other
</P>
<P>
self > other
</P>
<P>
self >= other
</P>
<P>
self < other
</P>
<P>
self <= other
</P>
<P>
self === other
</P>
<P>
self << other
</P>
<P>
self =~ other
</P>
<P>
self[nth]
</P>
<P>
self[start..last]
</P>
<P>
self[start, length]
</P>
<P>
self[nth] = val
</P>
<P>
self[start..last] = val
</P>
<P>
self[start, len] = val
</P>
<P>
self <=> other
</P>
<P>
<<(other)
</P>
<P>
concat(other)
</P>
<P>
capitalize!
</P>
<P>
chop!
</P>
<P>
chomp!([rs])
</P>
<P>
crypt(salt)
</P>
<P>
delete!(str)
</P>
<P>
downcase!
</P>
<P>
each_byte {|char|...}
</P>
<P>
each([rs]) {|line|...}
</P>
<P>
each_line([rs]) {|line|...}
</P>
<P>
empty?
</P>
<P>
freeze
</P>
<P>
frozen
</P>
<P>
gsub!(pattern, replace)
</P>
<P>
gsub!(pattern) {...}
</P>
<P>
include?(other)
</P>
<P>
index(substr[, pos])
</P>
<P>
length
</P>
<P>
reverse!
</P>
<P>
rindex(substr[, pos])
</P>
<P>
scan(pattern)
</P>
<P>
scan(pattern) {...}
</P>
<P>
size
</P>
<P>
split([sep[, limit]])
</P>
<P>
squeeze!([str])
</P>
<P>
strip!
</P>
<P>
sub!(pattern, replace)
</P>
<P>
sub!(pattern) {...}
</P>
<P>
sum([bits])
</P>
<P>
swapcase!
</P>
<P>
tr!(search, replace)
</P>
<P>
tr_s!(search, replace)
</P>
<P>
upcase!
</P>
</BODY>
</HTML>
|
