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Diffstat (limited to 'circuitpython/lib/berkeley-db-1.xx/docs/mpool.3.ps')
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diff --git a/circuitpython/lib/berkeley-db-1.xx/docs/mpool.3.ps b/circuitpython/lib/berkeley-db-1.xx/docs/mpool.3.ps new file mode 100644 index 0000000..816c924 --- /dev/null +++ b/circuitpython/lib/berkeley-db-1.xx/docs/mpool.3.ps @@ -0,0 +1,320 @@ +%!PS-Adobe-3.0 +%%Creator: groff version 1.08 +%%DocumentNeededResources: font Times-Roman +%%+ font Times-Bold +%%+ font Times-Italic +%%DocumentSuppliedResources: procset grops 1.08 0 +%%Pages: 2 +%%PageOrder: Ascend +%%Orientation: Portrait +%%EndComments +%%BeginProlog +%%BeginResource: procset grops 1.08 0 +/setpacking where{ +pop +currentpacking +true setpacking +}if +/grops 120 dict dup begin +/SC 32 def +/A/show load def +/B{0 SC 3 -1 roll widthshow}bind def +/C{0 exch ashow}bind def +/D{0 exch 0 SC 5 2 roll awidthshow}bind def +/E{0 rmoveto show}bind def +/F{0 rmoveto 0 SC 3 -1 roll widthshow}bind def +/G{0 rmoveto 0 exch ashow}bind def +/H{0 rmoveto 0 exch 0 SC 5 2 roll awidthshow}bind def +/I{0 exch rmoveto show}bind def +/J{0 exch rmoveto 0 SC 3 -1 roll widthshow}bind def +/K{0 exch rmoveto 0 exch ashow}bind def +/L{0 exch rmoveto 0 exch 0 SC 5 2 roll awidthshow}bind def +/M{rmoveto show}bind def +/N{rmoveto 0 SC 3 -1 roll widthshow}bind def +/O{rmoveto 0 exch ashow}bind def +/P{rmoveto 0 exch 0 SC 5 2 roll awidthshow}bind def +/Q{moveto show}bind def +/R{moveto 0 SC 3 -1 roll widthshow}bind def +/S{moveto 0 exch ashow}bind def +/T{moveto 0 exch 0 SC 5 2 roll awidthshow}bind def +/SF{ +findfont exch +[exch dup 0 exch 0 exch neg 0 0]makefont +dup setfont +[exch/setfont cvx]cvx bind def +}bind def +/MF{ +findfont +[5 2 roll +0 3 1 roll +neg 0 0]makefont +dup setfont +[exch/setfont cvx]cvx bind def +}bind def +/level0 0 def +/RES 0 def +/PL 0 def +/LS 0 def +/PLG{ +gsave newpath clippath pathbbox grestore +exch pop add exch pop +}bind def +/BP{ +/level0 save def +1 setlinecap +1 setlinejoin +72 RES div dup scale +LS{ +90 rotate +}{ +0 PL translate +}ifelse +1 -1 scale +}bind def +/EP{ +level0 restore +showpage +}bind def +/DA{ +newpath arcn stroke +}bind def +/SN{ +transform +.25 sub exch .25 sub exch +round .25 add exch round .25 add exch +itransform +}bind def +/DL{ +SN +moveto +SN +lineto stroke +}bind def +/DC{ +newpath 0 360 arc closepath +}bind def +/TM matrix def +/DE{ +TM currentmatrix pop +translate scale newpath 0 0 .5 0 360 arc closepath +TM setmatrix +}bind def +/RC/rcurveto load def +/RL/rlineto load def +/ST/stroke load def +/MT/moveto load def +/CL/closepath load def +/FL{ +currentgray exch setgray fill setgray +}bind def +/BL/fill load def +/LW/setlinewidth load def +/RE{ +findfont +dup maxlength 1 index/FontName known not{1 add}if dict begin +{ +1 index/FID ne{def}{pop pop}ifelse +}forall +/Encoding exch def +dup/FontName exch def +currentdict end definefont pop +}bind def +/DEFS 0 def +/EBEGIN{ +moveto +DEFS begin +}bind def +/EEND/end load def +/CNT 0 def +/level1 0 def +/PBEGIN{ +/level1 save def +translate +div 3 1 roll div exch scale +neg exch neg exch translate +0 setgray +0 setlinecap +1 setlinewidth +0 setlinejoin +10 setmiterlimit +[]0 setdash +/setstrokeadjust where{ +pop +false setstrokeadjust +}if +/setoverprint where{ +pop +false setoverprint +}if +newpath +/CNT countdictstack def +userdict begin +/showpage{}def +}bind def +/PEND{ +clear +countdictstack CNT sub{end}repeat +level1 restore +}bind def +end def +/setpacking where{ +pop +setpacking +}if +%%EndResource +%%IncludeResource: font Times-Roman +%%IncludeResource: font Times-Bold +%%IncludeResource: font Times-Italic +grops begin/DEFS 1 dict def DEFS begin/u{.001 mul}bind def end/RES 72 def/PL +792 def/LS false def/ENC0[/asciicircum/asciitilde/Scaron/Zcaron/scaron/zcaron +/Ydieresis/trademark/quotesingle/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef +/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/space +/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright/parenleft +/parenright/asterisk/plus/comma/hyphen/period/slash/zero/one/two/three/four +/five/six/seven/eight/nine/colon/semicolon/less/equal/greater/question/at/A/B/C +/D/E/F/G/H/I/J/K/L/M/N/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash +/bracketright/circumflex/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q +/r/s/t/u/v/w/x/y/z/braceleft/bar/braceright/tilde/.notdef/quotesinglbase +/guillemotleft/guillemotright/bullet/florin/fraction/perthousand/dagger +/daggerdbl/endash/emdash/ff/fi/fl/ffi/ffl/dotlessi/dotlessj/grave/hungarumlaut +/dotaccent/breve/caron/ring/ogonek/quotedblleft/quotedblright/oe/lslash +/quotedblbase/OE/Lslash/.notdef/exclamdown/cent/sterling/currency/yen/brokenbar +/section/dieresis/copyright/ordfeminine/guilsinglleft/logicalnot/minus +/registered/macron/degree/plusminus/twosuperior/threesuperior/acute/mu +/paragraph/periodcentered/cedilla/onesuperior/ordmasculine/guilsinglright +/onequarter/onehalf/threequarters/questiondown/Agrave/Aacute/Acircumflex/Atilde +/Adieresis/Aring/AE/Ccedilla/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute +/Icircumflex/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis +/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute/Thorn/germandbls +/agrave/aacute/acircumflex/atilde/adieresis/aring/ae/ccedilla/egrave/eacute +/ecircumflex/edieresis/igrave/iacute/icircumflex/idieresis/eth/ntilde/ograve +/oacute/ocircumflex/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex +/udieresis/yacute/thorn/ydieresis]def/Times-Italic@0 ENC0/Times-Italic RE +/Times-Bold@0 ENC0/Times-Bold RE/Times-Roman@0 ENC0/Times-Roman RE +%%EndProlog +%%Page: 1 1 +%%BeginPageSetup +BP +%%EndPageSetup +/F0 10/Times-Roman@0 SF 129.01(MPOOL\(3\) BSD)72 48 R(Programmer')2.5 E 2.5(sM) +-.55 G 129.01(anual MPOOL\(3\))340.17 48 R/F1 9/Times-Bold@0 SF -.18(NA)72 84 S +(ME).18 E F0(mpool \255 shared memory b)108 96 Q(uf)-.2 E(fer pool)-.25 E F1 +(SYNOPSIS)72 112.8 Q/F2 10/Times-Bold@0 SF(#include <db)108 124.8 Q(.h>)-.4 E +(#include <mpool.h>)108 136.8 Q(MPOOL *)108 160.8 Q(mpool_open \(DBT *k)108 +172.8 Q(ey)-.1 E 2.5(,i)-.55 G(nt fd, pgno_t pagesize, pgno_t maxcache\);) +216.25 172.8 Q -.1(vo)108 196.8 S(id).1 E(mpool_\214lter \(MPOOL *mp, v)108 +208.8 Q(oid \(*pgin\)\(v)-.1 E(oid *, pgno_t, v)-.1 E(oid *\),)-.1 E -.1(vo)158 +220.8 S(id \(*pgout\)\(v).1 E(oid *, pgno_t, v)-.1 E(oid *\), v)-.1 E +(oid *pgcookie\);)-.1 E -.1(vo)108 244.8 S(id *).1 E +(mpool_new \(MPOOL *mp, pgno_t *pgnoaddr\);)108 256.8 Q -.1(vo)108 280.8 S +(id *).1 E(mpool_get \(MPOOL *mp, pgno_t pgno, u_int \215ags\);)108 292.8 Q +(int)108 316.8 Q(mpool_put \(MPOOL *mp, v)108 328.8 Q(oid *pgaddr)-.1 E 2.5(,u) +-.92 G(_int \215ags\);)290.62 328.8 Q(int)108 352.8 Q +(mpool_sync \(MPOOL *mp\);)108 364.8 Q(int)108 388.8 Q +(mpool_close \(MPOOL *mp\);)108 400.8 Q F1(DESCRIPTION)72 417.6 Q/F3 10 +/Times-Italic@0 SF(Mpool)108 429.6 Q F0 1.013(is the library interf)3.513 F +1.013(ace intended to pro)-.1 F 1.013(vide page oriented b)-.15 F(uf)-.2 E +1.012(fer management of \214les.)-.25 F 1.012(The b)6.012 F(uf)-.2 E(fers)-.25 +E(may be shared between processes.)108 441.6 Q .416(The function)108 458.4 R F3 +(mpool_open)2.916 E F0 .417(initializes a memory pool.)2.917 F(The)5.417 E F3 +-.1(ke)2.917 G(y)-.2 E F0(ar)2.917 E .417(gument is the byte string used to ne) +-.18 F(gotiate)-.15 E .697(between multiple processes wishing to share b)108 +470.4 R(uf)-.2 E 3.196(fers. If)-.25 F .696(the \214le b)3.196 F(uf)-.2 E .696 +(fers are mapped in shared memory)-.25 F 3.196(,a)-.65 G(ll)534.44 470.4 Q .894 +(processes using the same k)108 482.4 R 1.194 -.15(ey w)-.1 H .894 +(ill share the b).15 F(uf)-.2 E 3.394(fers. If)-.25 F F3 -.1(ke)3.394 G(y)-.2 E +F0 .895(is NULL, the b)3.395 F(uf)-.2 E .895(fers are mapped into pri)-.25 F +-.25(va)-.25 G(te).25 E(memory)108 494.4 Q 5.116(.T)-.65 G(he)154.406 494.4 Q +F3(fd)2.616 E F0(ar)2.616 E .115(gument is a \214le descriptor for the underly\ +ing \214le, which must be seekable.)-.18 F(If)5.115 E F3 -.1(ke)2.615 G(y)-.2 E +F0 .115(is non-)2.615 F(NULL and matches a \214le already being mapped, the)108 +506.4 Q F3(fd)2.5 E F0(ar)2.5 E(gument is ignored.)-.18 E(The)108 523.2 Q F3 +(pa)3.328 E -.1(ge)-.1 G(size).1 E F0(ar)3.329 E .829 +(gument is the size, in bytes, of the pages into which the \214le is brok)-.18 +F .829(en up.)-.1 F(The)5.829 E F3(maxcac)3.329 E(he)-.15 E F0(ar)108 535.2 Q +.153(gument is the maximum number of pages from the underlying \214le to cache\ + at an)-.18 F 2.653(yo)-.15 G .153(ne time.)451.308 535.2 R .153(This v)5.153 F +.153(alue is)-.25 F .099(not relati)108 547.2 R .399 -.15(ve t)-.25 H 2.599(ot) +.15 G .099(he number of processes which share a \214le')168.727 547.2 R 2.6(sb) +-.55 G(uf)350.39 547.2 Q .1(fers, b)-.25 F .1(ut will be the lar)-.2 F .1 +(gest v)-.18 F .1(alue speci\214ed by)-.25 F(an)108 559.2 Q 2.5(yo)-.15 G 2.5 +(ft)129.79 559.2 S(he processes sharing the \214le.)138.4 559.2 Q(The)108 576 Q +F3(mpool_\214lter)3.254 E F0 .754(function is intended to mak)3.254 F 3.254(et) +-.1 G .754(ransparent input and output processing of the pages possi-)301.778 +576 R 3.095(ble. If)108 588 R(the)3.095 E F3(pgin)3.095 E F0 .596 +(function is speci\214ed, it is called each time a b)3.095 F(uf)-.2 E .596 +(fer is read into the memory pool from the)-.25 F .125(backing \214le.)108 600 +R .125(If the)5.125 F F3(pgout)2.625 E F0 .125 +(function is speci\214ed, it is called each time a b)2.625 F(uf)-.2 E .125 +(fer is written into the backing \214le.)-.25 F .276 +(Both functions are are called with the)108 612 R F3(pgcookie)2.777 E F0 +(pointer)2.777 E 2.777(,t)-.4 G .277 +(he page number and a pointer to the page to being)337.27 612 R +(read or written.)108 624 Q .124(The function)108 640.8 R F3(mpool_ne)2.624 E +(w)-.15 E F0(tak)2.624 E .123(es an MPOOL pointer and an address as ar)-.1 F +2.623(guments. If)-.18 F 2.623(an)2.623 G .623 -.25(ew p)457.568 640.8 T .123 +(age can be allo-).25 F .944(cated, a pointer to the page is returned and the \ +page number is stored into the)108 652.8 R F3(pgnoaddr)3.445 E F0 3.445 +(address. Other)3.445 F(-)-.2 E(wise, NULL is returned and errno is set.)108 +664.8 Q 1.167(The function)108 681.6 R F3(mpool_g)3.667 E(et)-.1 E F0(tak)3.667 +E 1.167(es a MPOOL pointer and a page number as ar)-.1 F 3.666(guments. If)-.18 +F 1.166(the page e)3.666 F 1.166(xists, a)-.15 F .686 +(pointer to the page is returned.)108 693.6 R .687 +(Otherwise, NULL is returned and errno is set.)5.686 F .687 +(The \215ags parameter is not)5.687 F(4.4 Berk)72 732 Q(ele)-.1 E 2.5(yD)-.15 G +(istrib)132.57 732 Q 104.595(ution June)-.2 F(4, 1993)2.5 E(1)535 732 Q EP +%%Page: 2 2 +%%BeginPageSetup +BP +%%EndPageSetup +/F0 10/Times-Roman@0 SF 129.01(MPOOL\(3\) BSD)72 48 R(Programmer')2.5 E 2.5(sM) +-.55 G 129.01(anual MPOOL\(3\))340.17 48 R(currently used.)108 84 Q 1.463 +(The function)108 100.8 R/F1 10/Times-Italic@0 SF(mpool_put)3.963 E F0 1.462 +(unpins the page referenced by)3.962 F F1(pgaddr)3.962 E F0(.).73 E F1(Pgaddr) +6.462 E F0 1.462(must be an address pre)3.962 F(viously)-.25 E(returned by)108 +112.8 Q F1(mpool_g)2.5 E(et)-.1 E F0(or)2.5 E F1(mpool_ne)2.5 E(w)-.15 E F0 5 +(.T).31 G(he \215ag v)271.65 112.8 Q(alue is speci\214ed by)-.25 E F1(or)2.5 E +F0('ing an).73 E 2.5(yo)-.15 G 2.5(ft)434.74 112.8 S(he follo)443.35 112.8 Q +(wing v)-.25 E(alues:)-.25 E(MPOOL_DIR)108 129.6 Q(TY)-.6 E +(The page has been modi\214ed and needs to be written to the backing \214le.) +144 141.6 Q F1(Mpool_put)108 158.4 Q F0 +(returns 0 on success and -1 if an error occurs.)2.5 E .247(The function)108 +175.2 R F1(mpool_sync)2.747 E F0 .247(writes all modi\214ed pages associated w\ +ith the MPOOL pointer to the backing \214le.)2.747 F F1(Mpool_sync)108 187.2 Q +F0(returns 0 on success and -1 if an error occurs.)2.5 E(The)108 204 Q F1 +(mpool_close)2.698 E F0 .198(function free')2.698 F 2.698(su)-.55 G 2.698(pa) +245.432 204 S .498 -.15(ny a)257.57 204 T .198 +(llocated memory associated with the memory pool cookie.).15 F(Modi-)5.197 E +(\214ed pages are)108 216 Q/F2 10/Times-Bold@0 SF(not)2.5 E F0 +(written to the backing \214le.)2.5 E F1(Mpool_close)5 E F0 +(returns 0 on success and -1 if an error occurs.)2.5 E/F3 9/Times-Bold@0 SF +(ERR)72 232.8 Q(ORS)-.27 E F0(The)108 244.8 Q F1(mpool_open)2.938 E F0 .438 +(function may f)2.938 F .438(ail and set)-.1 F F1(errno)2.938 E F0 .438(for an) +2.938 F 2.938(yo)-.15 G 2.938(ft)344.87 244.8 S .439 +(he errors speci\214ed for the library routine)353.918 244.8 R F1(mal-)2.939 E +(loc)108 256.8 Q F0(\(3\).).31 E(The)108 273.6 Q F1(mpool_g)2.5 E(et)-.1 E F0 +(function may f)2.5 E(ail and set)-.1 E F1(errno)2.5 E F0(for the follo)2.5 E +(wing:)-.25 E([EINV)108 290.4 Q 29.98(AL] The)-1.35 F(requested record doesn') +2.5 E 2.5(te)-.18 G(xist.)305.96 290.4 Q(The)108 307.2 Q F1(mpool_ne)4.073 E(w) +-.15 E F0(and)4.073 E F1(mpool_g)4.073 E(et)-.1 E F0 1.573(functions may f) +4.073 F 1.573(ail and set)-.1 F F1(errno)4.073 E F0 1.573(for an)4.073 F 4.073 +(yo)-.15 G 4.073(ft)421.336 307.2 S 1.573(he errors speci\214ed for the)431.519 +307.2 R(library routines)108 319.2 Q F1 -.37(re)2.5 G(ad).37 E F0(\(2\)).77 E +F1 2.5(,w).54 G(rite)214.48 319.2 Q F0(\(2\)).18 E F1(,).54 E F0(and)2.5 E F1 +(malloc)2.5 E F0(\(3\).).31 E(The)108 336 Q F1(mpool_sync)4.287 E F0 1.787 +(function may f)4.287 F 1.787(ail and set)-.1 F F1(errno)4.288 E F0 1.788 +(for an)4.288 F 4.288(yo)-.15 G 4.288(ft)356.694 336 S 1.788 +(he errors speci\214ed for the library routine)367.092 336 R F1(write)108 348 Q +F0(\(2\).).18 E(The)108 364.8 Q F1(mpool_close)4.125 E F0 1.624(function may f) +4.125 F 1.624(ail and set)-.1 F F1(errno)4.124 E F0 1.624(for an)4.124 F 4.124 +(yo)-.15 G 4.124(ft)357.842 364.8 S 1.624 +(he errors speci\214ed for the library routine)368.076 364.8 R F1(fr)108 376.8 +Q(ee)-.37 E F0(\(3\).).18 E F3(SEE ALSO)72 393.6 Q F1(dbopen)108 405.6 Q F0 +(\(3\),).24 E F1(btr)2.5 E(ee)-.37 E F0(\(3\),).18 E F1(hash)2.5 E F0(\(3\),) +.28 E F1 -.37(re)2.5 G(cno).37 E F0(\(3\)).18 E(4.4 Berk)72 732 Q(ele)-.1 E 2.5 +(yD)-.15 G(istrib)132.57 732 Q 104.595(ution June)-.2 F(4, 1993)2.5 E(2)535 732 +Q EP +%%Trailer +end +%%EOF |