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author | Jérémy Zurcher <jeremy@asynk.ch> | 2009-02-28 21:19:37 +0100 |
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committer | Jérémy Zurcher <jeremy@asynk.ch> | 2009-02-28 21:19:37 +0100 |
commit | 0a8b6ea5dc6a9d56638b985dd67b0c45f167e381 (patch) | |
tree | 1932cb877c3e623f9a300c37971bb4e073670aea /doc/mmap.rd | |
parent | 50bb456cf469f73d3a32474dc07bd58c0c64dba1 (diff) | |
download | mmap-ruby-master.zip mmap-ruby-master.tar.gz |
Diffstat (limited to 'doc/mmap.rd')
-rw-r--r-- | doc/mmap.rd | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/doc/mmap.rd b/doc/mmap.rd new file mode 100644 index 0000000..622ad89 --- /dev/null +++ b/doc/mmap.rd @@ -0,0 +1,253 @@ +=begin += Mmap + +((<Download|URL:ftp://moulon.inra.fr/pub/ruby/>)) + +The Mmap class implement memory-mapped file objects + +=== WARNING +=== The variables $' and $` are not available with gsub! and sub! + +== SuperClass + +Object + +== Included Modules + +* Comparable +* Enumerable + +== Class Methods + +--- lockall(flag) + disable paging of all pages mapped. ((|flag|)) can be + ((|Mmap::MCL_CURRENT|)) or ((|Mmap::MCL_FUTURE|)) + +--- new(file, mode = "r", protection = Mmap::MAP_SHARED, options = {}) +--- new(nil, length, protection = Mmap::MAP_SHARED, options = {}) + create a new Mmap object + + : ((|file|)) + Pathname of the file, if ((|nil|)) is given an anonymous map + is created ((|Mmanp::MAP_ANON|)) + + : ((|mode|)) + Mode to open the file, it can be "r", "w", "rw", "a" + + : ((|protection|)) + specify the nature of the mapping + + : ((|Mmap::MAP_SHARED|)) + Creates a mapping that's shared with all other processes + mapping the same areas of the file. + The default value is ((|Mmap::MAP_SHARED|)) + + : ((|Mmap::MAP_PRIVATE|)) + Creates a private copy-on-write mapping, so changes to the + contents of the mmap object will be private to this process + + : ((|options|)) + Hash. If one of the options ((|length|)) or ((|offset|)) + is specified it will not possible to modify the size of + the mapped file. + + : ((|length|)) + Maps ((|length|)) bytes from the file + + : ((|offset|)) + The mapping begin at ((|offset|)) + + : ((|advice|)) + The type of the access (see #madvise) + + +--- unlockall + reenable paging + +== Methods + +--- extend(count) + add ((|count|)) bytes to the file (i.e. pre-extend the file) + +--- madvise(advice) + ((|advice|)) can have the value ((|Mmap::MADV_NORMAL|)), + ((|Mmap::MADV_RANDOM|)), ((|Mmap::MADV_SEQUENTIAL|)), + ((|Mmap::MADV_WILLNEED|)), ((|Mmap::MADV_DONTNEED|)) + +--- mprotect(mode) + change the mode, value must be "r", "w" or "rw" + +--- mlock + disable paging + +--- msync +--- flush + flush the file + +--- munlock + reenable paging + +--- munmap + terminate the association + +=== Other methods with the same syntax than for the class String + + +--- self == other + comparison + +--- self > other + comparison + +--- self >= other + comparison + +--- self < other + comparison + +--- self <= other + comparison + +--- self === other + used for ((|case|)) comparison + +--- self << other + append ((|other|)) to ((|self|)) + +--- self =~ other + return an index of the match + +--- self[nth] + retrieve the ((|nth|)) character + +--- self[start..last] + return a substring from ((|start|)) to ((|last|)) + +--- self[start, length] + return a substring of ((|lenght|)) characters from ((|start|)) + +--- self[nth] = val + change the ((|nth|)) character with ((|val|)) + +--- self[start..last] = val + change substring from ((|start|)) to ((|last|)) with ((|val|)) + +--- self[start, len] = val + replace ((|length|)) characters from ((|start|)) with ((|val|)). + +--- self <=> other + comparison : return -1, 0, 1 + +--- casecmp(other) >= 1.7.1 + +--- concat(other) + append the contents of ((|other|)) + +--- capitalize! + change the first character to uppercase letter + +--- chop! + chop off the last character + +--- chomp!([rs]) + chop off the line ending character, specified by ((|rs|)) + +--- count(o1 [, o2, ...]) + each parameter defines a set of character to count + +--- crypt(salt) + crypt with ((|salt|)) + +--- delete!(str) + delete every characters included in ((|str|)) + +--- downcase! + change all uppercase character to lowercase character + +--- each_byte {|char|...} + iterate on each byte + +--- each([rs]) {|line|...} +--- each_line([rs]) {|line|...} + iterate on each line + +--- empty? + return ((|true|)) if the file is empty + +--- freeze + freeze the current file + +--- frozen + return ((|true|)) if the file is frozen + +--- gsub!(pattern, replace) + global substitution + +--- gsub!(pattern) {|str|...} + global substitution + +--- include?(other) + return ((|true|)) if ((|other|)) is found + +--- index(substr[, pos]) + return the index of ((|substr|)) + +--- insert(index, str) >= 1.7.1 + insert ((|str|)) at ((|index|)) + +--- length + return the size of the file + +--- reverse! + reverse the content of the file + +--- rindex(substr[, pos]) + return the index of the last occurrence of ((|substr|)) + +--- scan(pattern) + return an array of all occurence matched by ((|pattern|)) + +--- scan(pattern) {|str| ...} + iterate through the file, matching the ((|pattern|)) + +--- size + return the size of the file + +--- slice + same than ((|[]|)) + +--- slice! + delete the specified portion of the file + +--- split([sep[, limit]]) + splits into a list of strings and return this array + +--- squeeze!([str]) + squeezes sequences of the same characters which is included in ((|str|)) + +--- strip! + removes leading and trailing whitespace + +--- sub!(pattern, replace) + substitution + +--- sub!(pattern) {|str| ...} + substitution + +--- sum([bits]) + return a checksum + +--- swapcase! + replaces all lowercase characters to uppercase characters, and vice-versa + +--- tr!(search, replace) + translate the character from ((|search|)) to ((|replace|)) + +--- tr_s!(search, replace) + translate the character from ((|search|)) to ((|replace|)), then + squeeze sequence of the same characters + +--- upcase! + replaces all lowercase characters to downcase characters + +=end |