Implement a cross-platform `mmap` class in `src/lang/io` by jviotti · Pull Request #2156 · sourcemeta/core

jviotti · 2026-01-01T16:59:42Z

Signed-off-by: Juan Cruz Viotti jv@jviotti.com

augmentcode · 2026-01-01T17:03:41Z

🤖 Augment PR Summary

Summary: This PR introduces sourcemeta::core::FileView, a cross-platform read-only memory-mapped file view.

Changes:

Added public API header src/lang/io/include/sourcemeta/core/io_fileview.h defining FileView.
Implemented mapping/unmapping in src/lang/io/io_fileview.cc using mmap on POSIX and CreateFileMapping/MapViewOfFile on Windows.
Exposed the new API from the umbrella header io.h.
Updated the io library target to compile the new implementation source.
Added unit tests for FileView::size() and FileView::as<T>() backed by a binary fixture.
Moved IO test fixtures into test/io/stubs and updated tests to use STUBS_DIRECTORY.

Technical Notes: FileView is non-copyable/non-movable and maps the entire file as read-only bytes.

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augmentcode

Review completed. 3 suggestions posted.

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src/lang/io/CMakeLists.txt

src/lang/io/include/sourcemeta/core/io_fileview.h

src/lang/io/io_fileview.cc

github-actions

Benchmark (linux/llvm)

Details

Benchmark suite	Current: `39177dd`	Previous: `19a1d89`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`3.1126495491846695` ns/iter	`3.107532424192905` ns/iter	`1.00`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`3.1085062904521346` ns/iter	`3.106613505553412` ns/iter	`1.00`
`Regex_Period_Asterisk`	`3.1083737468684167` ns/iter	`3.1055210242896742` ns/iter	`1.00`
`Regex_Group_Period_Asterisk_Group`	`3.108010571024479` ns/iter	`3.1054741887944575` ns/iter	`1.00`
`Regex_Period_Plus`	`3.1082415096228955` ns/iter	`3.0799843857217444` ns/iter	`1.01`
`Regex_Period`	`3.1082296150140323` ns/iter	`3.105466513601818` ns/iter	`1.00`
`Regex_Caret_Period_Plus_Dollar`	`3.1091522423952025` ns/iter	`3.106978058963406` ns/iter	`1.00`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`3.115953524291525` ns/iter	`3.1089479341216326` ns/iter	`1.00`
`Regex_Caret_Period_Asterisk_Dollar`	`3.1137710732535306` ns/iter	`3.1066805813744987` ns/iter	`1.00`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`3.1078666333018843` ns/iter	`3.1075978402915223` ns/iter	`1.00`
`Regex_Caret_X_Hyphen`	`10.265235405478519` ns/iter	`10.258034485726045` ns/iter	`1.00`
`Regex_Period_Md_Dollar`	`27.224422822137456` ns/iter	`27.21684879749233` ns/iter	`1.00`
`Regex_Caret_Slash_Period_Asterisk`	`5.955637617104512` ns/iter	`6.216900471612724` ns/iter	`0.96`
`Regex_Caret_Period_Range_Dollar`	`3.1950282508883463` ns/iter	`4.03858529133568` ns/iter	`0.79`
`Regex_Nested_Backtrack`	`49.77873728848004` ns/iter	`52.84941544467464` ns/iter	`0.94`
`JSON_Array_Of_Objects_Unique`	`415.6844262100097` ns/iter	`414.4531873241353` ns/iter	`1.00`
`JSON_Parse_1`	`30685.59488123533` ns/iter	`29226.272317139654` ns/iter	`1.05`
`JSON_Parse_Real`	`37666.716868112904` ns/iter	`37570.90426222677` ns/iter	`1.00`
`JSON_Parse_Decimal`	`129060.63710123672` ns/iter	`128494.91897343368` ns/iter	`1.00`
`JSON_Fast_Hash_Helm_Chart_Lock`	`63.6595870218597` ns/iter	`55.81311983160711` ns/iter	`1.14`
`JSON_Equality_Helm_Chart_Lock`	`154.72054833485052` ns/iter	`154.63338457471676` ns/iter	`1.00`
`JSON_String_Equal/10`	`6.559177949888448` ns/iter	`6.533788816248626` ns/iter	`1.00`
`JSON_String_Equal/100`	`7.168111046402839` ns/iter	`6.896509415231262` ns/iter	`1.04`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.9357761448610048` ns/iter	`0.9342870049862199` ns/iter	`1.00`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`10.261482411912878` ns/iter	`10.255996747200411` ns/iter	`1.00`
`JSON_String_Fast_Hash/10`	`2.177103327265711` ns/iter	`2.1761861316489193` ns/iter	`1.00`
`JSON_String_Fast_Hash/100`	`2.176155042972184` ns/iter	`2.1769172571759894` ns/iter	`1.00`
`JSON_String_Key_Hash/10`	`1.8676321364156763` ns/iter	`1.8680138613891324` ns/iter	`1.00`
`JSON_String_Key_Hash/100`	`6.534494414117538` ns/iter	`6.530210234165565` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Same_Length`	`3.7387697979953782` ns/iter	`3.735870639622494` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Too_Small`	`3.7341502845624093` ns/iter	`3.7330301083044617` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Too_Large`	`3.7368119015341144` ns/iter	`3.733794805953628` ns/iter	`1.00`
`Pointer_Object_Traverse`	`44.02728981102562` ns/iter	`43.89750690785664` ns/iter	`1.00`
`Pointer_Object_Try_Traverse`	`52.61175411974547` ns/iter	`52.60804401720846` ns/iter	`1.00`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`349.7906350421032` ns/iter	`349.45489225363747` ns/iter	`1.00`
`Schema_Frame_WoT_References`	`7339640.729167485` ns/iter	`7290033.135416725` ns/iter	`1.01`
`Schema_Frame_OMC_References`	`34023395.00000835` ns/iter	`37733123.57894778` ns/iter	`0.90`
`Schema_Frame_OMC_Locations`	`31739526.40908986` ns/iter	`35285442.900004685` ns/iter	`0.90`
`Schema_Frame_ISO_Language_Locations`	`153553104.25002244` ns/iter	`162257638.2500256` ns/iter	`0.95`
`Schema_Iterator_ISO_Language`	`3862824.921787647` ns/iter	`3859297.9120884202` ns/iter	`1.00`
`Schema_PointerWalker_ISO_Language`	`4793478.664382373` ns/iter	`5020706.699999664` ns/iter	`0.95`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`153293289.79996717` ns/iter	`148339385.99999782` ns/iter	`1.03`
`Schema_Tracker_ISO_Language`	`46458597.73333238` ns/iter	`47560094.78571904` ns/iter	`0.98`
`Schema_Tracker_ISO_Language_To_JSON`	`21337410.1818207` ns/iter	`24010408.51724043` ns/iter	`0.89`
`Schema_Format_ISO_Language_To_JSON`	`166401823.49999577` ns/iter	`168106747.75001645` ns/iter	`0.99`
`Schema_Bundle_Meta_2020_12`	`2191719.5250004795` ns/iter	`2177381.6552811083` ns/iter	`1.01`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`284564727.3333422` ns/iter	`294231451.9999627` ns/iter	`0.97`
`Alterschema_Check_Readibility_OMC`	`38947214.777774915` ns/iter	`42643832.3124998` ns/iter	`0.91`

This comment was automatically generated by workflow using github-action-benchmark.

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>

github-actions

Benchmark (macos/llvm)

Details

Benchmark suite	Current: `39177dd`	Previous: `19a1d89`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`1.5738424507003501` ns/iter	`1.7851743195062855` ns/iter	`0.88`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`1.5767121364933536` ns/iter	`1.599011971289511` ns/iter	`0.99`
`Regex_Period_Asterisk`	`1.6407425292323192` ns/iter	`1.5858447520324253` ns/iter	`1.03`
`Regex_Group_Period_Asterisk_Group`	`1.6459309419658066` ns/iter	`1.5783737651745129` ns/iter	`1.04`
`Regex_Period_Plus`	`1.9706393476445478` ns/iter	`1.8909936709348543` ns/iter	`1.04`
`Regex_Period`	`1.9773198175769093` ns/iter	`2.0989825842353973` ns/iter	`0.94`
`Regex_Caret_Period_Plus_Dollar`	`2.0480524591425002` ns/iter	`2.071685212506835` ns/iter	`0.99`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`2.041801988473097` ns/iter	`2.0956198522856635` ns/iter	`0.97`
`Regex_Caret_Period_Asterisk_Dollar`	`1.6279509436267219` ns/iter	`1.7379369815568533` ns/iter	`0.94`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`1.5788348764425733` ns/iter	`1.7636348164495221` ns/iter	`0.90`
`Regex_Caret_X_Hyphen`	`6.1796743977887285` ns/iter	`6.469969831586066` ns/iter	`0.96`
`Regex_Period_Md_Dollar`	`19.691024195285873` ns/iter	`20.260392253152535` ns/iter	`0.97`
`Regex_Caret_Slash_Period_Asterisk`	`5.365480271478174` ns/iter	`5.387012250927113` ns/iter	`1.00`
`Regex_Caret_Period_Range_Dollar`	`1.7086688721951382` ns/iter	`1.7554087835606593` ns/iter	`0.97`
`Regex_Nested_Backtrack`	`27.931331324370433` ns/iter	`27.999688950000166` ns/iter	`1.00`
`JSON_Array_Of_Objects_Unique`	`345.0320100850646` ns/iter	`332.3582914835398` ns/iter	`1.04`
`JSON_Parse_1`	`20427.02256051681` ns/iter	`20263.495546218546` ns/iter	`1.01`
`JSON_Parse_Real`	`23245.469508547427` ns/iter	`23726.912796603887` ns/iter	`0.98`
`JSON_Parse_Decimal`	`232565.08344324707` ns/iter	`231198.5954173595` ns/iter	`1.01`
`JSON_Fast_Hash_Helm_Chart_Lock`	`54.55248089090727` ns/iter	`54.23554037402363` ns/iter	`1.01`
`JSON_Equality_Helm_Chart_Lock`	`130.32676842033217` ns/iter	`128.246499512134` ns/iter	`1.02`
`JSON_String_Equal/10`	`6.599411126957737` ns/iter	`7.180607943147722` ns/iter	`0.92`
`JSON_String_Equal/100`	`6.329809776857746` ns/iter	`6.763272521549633` ns/iter	`0.94`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.32923290647674847` ns/iter	`0.3322532895283559` ns/iter	`0.99`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`3.4273665039550174` ns/iter	`3.412105301473405` ns/iter	`1.00`
`JSON_String_Fast_Hash/10`	`2.3692012516250376` ns/iter	`2.513126055099275` ns/iter	`0.94`
`JSON_String_Fast_Hash/100`	`1.9364800812093113` ns/iter	`2.1566568880630843` ns/iter	`0.90`
`JSON_String_Key_Hash/10`	`1.2748265522359339` ns/iter	`1.4642984831795827` ns/iter	`0.87`
`JSON_String_Key_Hash/100`	`2.0940438305241034` ns/iter	`2.2662534106023706` ns/iter	`0.92`
`JSON_Object_Defines_Miss_Same_Length`	`2.730771324820231` ns/iter	`2.9770061136190398` ns/iter	`0.92`
`JSON_Object_Defines_Miss_Too_Small`	`2.665172126760296` ns/iter	`3.0290299148597493` ns/iter	`0.88`
`JSON_Object_Defines_Miss_Too_Large`	`2.699914506522558` ns/iter	`2.8362254512402214` ns/iter	`0.95`
`Pointer_Object_Traverse`	`14.381492320573813` ns/iter	`15.30701595273923` ns/iter	`0.94`
`Pointer_Object_Try_Traverse`	`18.833376094230516` ns/iter	`20.83579339468899` ns/iter	`0.90`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`152.6912526679683` ns/iter	`166.68293769084917` ns/iter	`0.92`
`Schema_Frame_WoT_References`	`5821030.405405172` ns/iter	`5884230.140186319` ns/iter	`0.99`
`Schema_Frame_OMC_References`	`29141564.9999999` ns/iter	`32323541.63636005` ns/iter	`0.90`
`Schema_Frame_OMC_Locations`	`29559959.96153696` ns/iter	`30518676.136363283` ns/iter	`0.97`
`Schema_Frame_ISO_Language_Locations`	`104966321.42857315` ns/iter	`109562449.99999854` ns/iter	`0.96`
`Schema_Iterator_ISO_Language`	`3917219.675392745` ns/iter	`3488556.6111109606` ns/iter	`1.12`
`Schema_PointerWalker_ISO_Language`	`5966414.300813056` ns/iter	`5969748.931623408` ns/iter	`1.00`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`72305149.99999969` ns/iter	`71731295.79999796` ns/iter	`1.01`
`Schema_Tracker_ISO_Language`	`38711888.88888987` ns/iter	`38135421.277780145` ns/iter	`1.02`
`Schema_Tracker_ISO_Language_To_JSON`	`13908103.312499994` ns/iter	`14231593.551021526` ns/iter	`0.98`
`Schema_Format_ISO_Language_To_JSON`	`107571339.14286701` ns/iter	`113399187.66668689` ns/iter	`0.95`
`Schema_Bundle_Meta_2020_12`	`1733386.7067305367` ns/iter	`1618278.1980148212` ns/iter	`1.07`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`213315177.2499957` ns/iter	`184414010.24998072` ns/iter	`1.16`
`Alterschema_Check_Readibility_OMC`	`39620810.16666414` ns/iter	`36975535.105266556` ns/iter	`1.07`

This comment was automatically generated by workflow using github-action-benchmark.

github-actions

Benchmark (windows/msvc)

Details

Benchmark suite	Current: `39177dd`	Previous: `19a1d89`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`4.108076034121365` ns/iter	`3.9102017857126317` ns/iter	`1.05`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`4.07840585549744` ns/iter	`3.5514389117982836` ns/iter	`1.15`
`Regex_Period_Asterisk`	`4.708091729511897` ns/iter	`3.973496935757107` ns/iter	`1.18`
`Regex_Group_Period_Asterisk_Group`	`4.401076874999887` ns/iter	`3.665300663096396` ns/iter	`1.20`
`Regex_Period_Plus`	`4.967067999999699` ns/iter	`4.18636767109732` ns/iter	`1.19`
`Regex_Period`	`5.408332999999175` ns/iter	`4.489547106230514` ns/iter	`1.20`
`Regex_Caret_Period_Plus_Dollar`	`8.54638058035714` ns/iter	`4.115615513394947` ns/iter	`2.08`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`4.944835000000012` ns/iter	`3.7934169642852567` ns/iter	`1.30`
`Regex_Caret_Period_Asterisk_Dollar`	`4.762368983842242` ns/iter	`3.738156568340609` ns/iter	`1.27`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`4.113463124999583` ns/iter	`3.497863599214585` ns/iter	`1.18`
`Regex_Caret_X_Hyphen`	`7.5411439732141` ns/iter	`7.404215000001386` ns/iter	`1.02`
`Regex_Period_Md_Dollar`	`35.45682543221125` ns/iter	`38.6681305803549` ns/iter	`0.92`
`Regex_Caret_Slash_Period_Asterisk`	`7.161532366071199` ns/iter	`7.993459785743888` ns/iter	`0.90`
`Regex_Caret_Period_Range_Dollar`	`4.087692522321313` ns/iter	`4.290080349479869` ns/iter	`0.95`
`Regex_Nested_Backtrack`	`110.57590624998782` ns/iter	`113.70775669640969` ns/iter	`0.97`
`JSON_Array_Of_Objects_Unique`	`470.74309614799` ns/iter	`479.2103236607963` ns/iter	`0.98`
`JSON_Parse_1`	`72805.94642857353` ns/iter	`91471.81919639178` ns/iter	`0.80`
`JSON_Parse_Real`	`89244.301593683` ns/iter	`122009.82142855668` ns/iter	`0.73`
`JSON_Parse_Decimal`	`347006.77618072595` ns/iter	`388946.26719055884` ns/iter	`0.89`
`JSON_Fast_Hash_Helm_Chart_Lock`	`61.7779100000007` ns/iter	`43.05423048734221` ns/iter	`1.43`
`JSON_Equality_Helm_Chart_Lock`	`289.7518337330638` ns/iter	`243.19578571440357` ns/iter	`1.19`
`JSON_String_Equal/10`	`13.532764285715514` ns/iter	`10.576346874998421` ns/iter	`1.28`
`JSON_String_Equal/100`	`14.18262181168566` ns/iter	`13.446253571430589` ns/iter	`1.05`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`2.1973893749997586` ns/iter	`1.7424164520588843` ns/iter	`1.26`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`12.974444642856449` ns/iter	`9.684771385335749` ns/iter	`1.34`
`JSON_String_Fast_Hash/10`	`3.1930368799889752` ns/iter	`2.3077855331382406` ns/iter	`1.38`
`JSON_String_Fast_Hash/100`	`3.19510089285708` ns/iter	`2.193021562499098` ns/iter	`1.46`
`JSON_String_Key_Hash/10`	`3.8417014217115226` ns/iter	`2.6682035008899723` ns/iter	`1.44`
`JSON_String_Key_Hash/100`	`13.77537321428487` ns/iter	`14.112537500003393` ns/iter	`0.98`
`JSON_Object_Defines_Miss_Same_Length`	`4.915830536811304` ns/iter	`5.090564285714955` ns/iter	`0.97`
`JSON_Object_Defines_Miss_Too_Small`	`3.788779726222628` ns/iter	`4.319364375001555` ns/iter	`0.88`
`JSON_Object_Defines_Miss_Too_Large`	`4.710143314085222` ns/iter	`5.0829209999983505` ns/iter	`0.93`
`Pointer_Object_Traverse`	`54.92942857142477` ns/iter	`51.08083999998598` ns/iter	`1.08`
`Pointer_Object_Try_Traverse`	`69.59400000000642` ns/iter	`63.256071428595206` ns/iter	`1.10`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`156.5121023878671` ns/iter	`178.84886465499747` ns/iter	`0.88`
`Schema_Frame_WoT_References`	`16709236.585364943` ns/iter	`17462486.486483857` ns/iter	`0.96`
`Schema_Frame_OMC_References`	`75808777.77777712` ns/iter	`81276845.45454691` ns/iter	`0.93`
`Schema_Frame_OMC_Locations`	`70319844.44443475` ns/iter	`71748572.72726017` ns/iter	`0.98`
`Schema_Frame_ISO_Language_Locations`	`287084499.9999918` ns/iter	`290597600.00018287` ns/iter	`0.99`
`Schema_Iterator_ISO_Language`	`8156878.666666973` ns/iter	`9575738.666668864` ns/iter	`0.85`
`Schema_PointerWalker_ISO_Language`	`9852077.333333302` ns/iter	`10715110.714288909` ns/iter	`0.92`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`223914633.33334136` ns/iter	`220741133.33322504` ns/iter	`1.01`
`Schema_Tracker_ISO_Language`	`100235633.33334096` ns/iter	`103439933.33329612` ns/iter	`0.97`
`Schema_Tracker_ISO_Language_To_JSON`	`52790679.99999825` ns/iter	`53798559.999995634` ns/iter	`0.98`
`Schema_Format_ISO_Language_To_JSON`	`289954949.99998075` ns/iter	`299558949.9998914` ns/iter	`0.97`
`Schema_Bundle_Meta_2020_12`	`3694492.8205107665` ns/iter	`3751293.8547631707` ns/iter	`0.98`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`412669699.9999808` ns/iter	`405394800.00006735` ns/iter	`1.02`
`Alterschema_Check_Readibility_OMC`	`77409727.27273485` ns/iter	`75815311.11115207` ns/iter	`1.02`

This comment was automatically generated by workflow using github-action-benchmark.

github-actions

Benchmark (linux/gcc)

Details

Benchmark suite	Current: `39177dd`	Previous: `19a1d89`	Ratio
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`293599792.00000906` ns/iter	`309265267.4999954` ns/iter	`0.95`
`Alterschema_Check_Readibility_OMC`	`42795069.43749567` ns/iter	`48019651.06666254` ns/iter	`0.89`
`Schema_Frame_WoT_References`	`7957110.261363647` ns/iter	`8160863.860465788` ns/iter	`0.98`
`Schema_Frame_OMC_References`	`37577642.44444515` ns/iter	`41995143.8823519` ns/iter	`0.89`
`Schema_Frame_OMC_Locations`	`34842623.55000283` ns/iter	`39059161.55555487` ns/iter	`0.89`
`Schema_Frame_ISO_Language_Locations`	`187227265.25001577` ns/iter	`196103015.5000003` ns/iter	`0.95`
`Schema_Iterator_ISO_Language`	`4595733.708609392` ns/iter	`4691455.050724603` ns/iter	`0.98`
`Schema_PointerWalker_ISO_Language`	`4384982.0562506635` ns/iter	`4547116.2727276115` ns/iter	`0.96`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`277942711.6666587` ns/iter	`294188735.66669387` ns/iter	`0.94`
`Schema_Tracker_ISO_Language`	`47503273.00000663` ns/iter	`53158107.69231506` ns/iter	`0.89`
`Schema_Tracker_ISO_Language_To_JSON`	`34579682.52381047` ns/iter	`39139403.9444448` ns/iter	`0.88`
`Schema_Format_ISO_Language_To_JSON`	`189764791.2499565` ns/iter	`179009543.5000012` ns/iter	`1.06`
`Schema_Bundle_Meta_2020_12`	`2348184.648828319` ns/iter	`2381369.904755616` ns/iter	`0.99`
`Pointer_Object_Traverse`	`46.791137168407495` ns/iter	`49.41952646356252` ns/iter	`0.95`
`Pointer_Object_Try_Traverse`	`22.731631278773374` ns/iter	`23.56992114622912` ns/iter	`0.96`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`165.9228127938671` ns/iter	`142.6556358228488` ns/iter	`1.16`
`JSON_Array_Of_Objects_Unique`	`379.93746191183294` ns/iter	`383.1492955889888` ns/iter	`0.99`
`JSON_Parse_1`	`32595.054616569414` ns/iter	`32775.28507189742` ns/iter	`0.99`
`JSON_Parse_Real`	`43855.16391089695` ns/iter	`42871.24429605582` ns/iter	`1.02`
`JSON_Parse_Decimal`	`154406.5648046154` ns/iter	`157883.25428700325` ns/iter	`0.98`
`JSON_Fast_Hash_Helm_Chart_Lock`	`56.133291099990856` ns/iter	`54.76566070001354` ns/iter	`1.02`
`JSON_Equality_Helm_Chart_Lock`	`155.0287086589045` ns/iter	`154.77759716377076` ns/iter	`1.00`
`JSON_String_Equal/10`	`7.269886560838479` ns/iter	`6.337648984100951` ns/iter	`1.15`
`JSON_String_Equal/100`	`7.895744909705076` ns/iter	`6.968336013041638` ns/iter	`1.13`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.933873615848831` ns/iter	`0.9336525879007004` ns/iter	`1.00`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`13.849349736709659` ns/iter	`13.745288895816104` ns/iter	`1.01`
`JSON_String_Fast_Hash/10`	`1.903918304867709` ns/iter	`1.905603085073323` ns/iter	`1.00`
`JSON_String_Fast_Hash/100`	`1.9032271176592581` ns/iter	`1.9052170434409117` ns/iter	`1.00`
`JSON_String_Key_Hash/10`	`1.5558594759274285` ns/iter	`1.5567917437202217` ns/iter	`1.00`
`JSON_String_Key_Hash/100`	`12.427666172131778` ns/iter	`12.428384734465551` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Same_Length`	`2.487570760028498` ns/iter	`2.5278251097971243` ns/iter	`0.98`
`JSON_Object_Defines_Miss_Too_Small`	`2.4874745473786013` ns/iter	`2.6082236907951355` ns/iter	`0.95`
`JSON_Object_Defines_Miss_Too_Large`	`2.498991309611856` ns/iter	`2.566498977222349` ns/iter	`0.97`
`Regex_Lower_S_Or_Upper_S_Asterisk`	`3.107457472942353` ns/iter	`3.1216629565132763` ns/iter	`1.00`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`3.1086487051704093` ns/iter	`3.1158915748251936` ns/iter	`1.00`
`Regex_Period_Asterisk`	`3.107532789143084` ns/iter	`3.1235254448039886` ns/iter	`0.99`
`Regex_Group_Period_Asterisk_Group`	`3.111663506100421` ns/iter	`3.132472375141052` ns/iter	`0.99`
`Regex_Period_Plus`	`3.5046597791098786` ns/iter	`3.422768123119802` ns/iter	`1.02`
`Regex_Period`	`3.417343254761026` ns/iter	`3.4237149365395045` ns/iter	`1.00`
`Regex_Caret_Period_Plus_Dollar`	`3.4197401214777328` ns/iter	`3.4184288538121876` ns/iter	`1.00`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`3.4189436958433275` ns/iter	`3.4317598680874553` ns/iter	`1.00`
`Regex_Caret_Period_Asterisk_Dollar`	`4.351156100209558` ns/iter	`4.35792356085169` ns/iter	`1.00`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`4.365279002152771` ns/iter	`4.35486115136859` ns/iter	`1.00`
`Regex_Caret_X_Hyphen`	`13.062058819390684` ns/iter	`13.068243501364268` ns/iter	`1.00`
`Regex_Period_Md_Dollar`	`35.75969747596111` ns/iter	`42.203458041785865` ns/iter	`0.85`
`Regex_Caret_Slash_Period_Asterisk`	`9.323734819069276` ns/iter	`9.330455255765925` ns/iter	`1.00`
`Regex_Caret_Period_Range_Dollar`	`4.352069150892121` ns/iter	`4.356417927998906` ns/iter	`1.00`
`Regex_Nested_Backtrack`	`61.030388976541964` ns/iter	`64.92252505672931` ns/iter	`0.94`

This comment was automatically generated by workflow using github-action-benchmark.

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Benchmark (macos/gcc)

Details

Benchmark suite	Current: `39177dd`	Previous: `19a1d89`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`2.1369192191194535` ns/iter	`2.5182951245803826` ns/iter	`0.85`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`2.159615609388163` ns/iter	`2.2662803765018182` ns/iter	`0.95`
`Regex_Period_Asterisk`	`2.1561668209062104` ns/iter	`2.2217825529691337` ns/iter	`0.97`
`Regex_Group_Period_Asterisk_Group`	`2.2397517614694387` ns/iter	`2.183856005171076` ns/iter	`1.03`
`Regex_Period_Plus`	`2.299550815330878` ns/iter	`2.2467155871241586` ns/iter	`1.02`
`Regex_Period`	`2.3082592142403455` ns/iter	`2.2373904824546296` ns/iter	`1.03`
`Regex_Caret_Period_Plus_Dollar`	`2.3028445885886453` ns/iter	`2.239001722622773` ns/iter	`1.03`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`2.3097562620320513` ns/iter	`2.1759761223637075` ns/iter	`1.06`
`Regex_Caret_Period_Asterisk_Dollar`	`2.1798991490867814` ns/iter	`2.0691193240226644` ns/iter	`1.05`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`2.064532731173299` ns/iter	`2.0678892079888453` ns/iter	`1.00`
`Regex_Caret_X_Hyphen`	`6.345870975550354` ns/iter	`6.275316709166423` ns/iter	`1.01`
`Regex_Period_Md_Dollar`	`20.85162977054476` ns/iter	`20.79768943315824` ns/iter	`1.00`
`Regex_Caret_Slash_Period_Asterisk`	`4.761388129584099` ns/iter	`4.72432068207751` ns/iter	`1.01`
`Regex_Caret_Period_Range_Dollar`	`2.167556446273495` ns/iter	`2.1863537444968957` ns/iter	`0.99`
`Regex_Nested_Backtrack`	`44.34827385469506` ns/iter	`45.955886131845986` ns/iter	`0.97`
`JSON_Array_Of_Objects_Unique`	`260.0892944070426` ns/iter	`270.81053659592897` ns/iter	`0.96`
`JSON_Parse_1`	`23095.69887294891` ns/iter	`23532.77852089819` ns/iter	`0.98`
`JSON_Parse_Real`	`24755.531265853933` ns/iter	`24585.96147739584` ns/iter	`1.01`
`JSON_Parse_Decimal`	`329689.0267411796` ns/iter	`263480.9938019621` ns/iter	`1.25`
`JSON_Fast_Hash_Helm_Chart_Lock`	`33.89000896628637` ns/iter	`32.72897166399209` ns/iter	`1.04`
`JSON_Equality_Helm_Chart_Lock`	`128.81880245632104` ns/iter	`124.58535266754731` ns/iter	`1.03`
`JSON_String_Equal/10`	`6.332154184279791` ns/iter	`5.679640350278691` ns/iter	`1.11`
`JSON_String_Equal/100`	`6.266349456045044` ns/iter	`5.459738454846699` ns/iter	`1.15`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.807210124175441` ns/iter	`0.789085490404678` ns/iter	`1.02`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`3.687681740440262` ns/iter	`3.666086532902545` ns/iter	`1.01`
`JSON_String_Fast_Hash/10`	`1.929874266907946` ns/iter	`1.9602475127223549` ns/iter	`0.98`
`JSON_String_Fast_Hash/100`	`1.9234548963360585` ns/iter	`1.8562957512519092` ns/iter	`1.04`
`JSON_String_Key_Hash/10`	`1.4768548894100622` ns/iter	`1.4354108609765377` ns/iter	`1.03`
`JSON_String_Key_Hash/100`	`2.7654732204912054` ns/iter	`2.643675709618619` ns/iter	`1.05`
`JSON_Object_Defines_Miss_Same_Length`	`1.844767731579545` ns/iter	`1.8635745997394364` ns/iter	`0.99`
`JSON_Object_Defines_Miss_Too_Small`	`1.8013499496876548` ns/iter	`1.8924682585757493` ns/iter	`0.95`
`JSON_Object_Defines_Miss_Too_Large`	`1.865725024120544` ns/iter	`1.8655704399994466` ns/iter	`1.00`
`Pointer_Object_Traverse`	`51.69115561687007` ns/iter	`51.68862142319428` ns/iter	`1.00`
`Pointer_Object_Try_Traverse`	`36.47343095908717` ns/iter	`36.63756640243772` ns/iter	`1.00`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`158.5727292850749` ns/iter	`154.77207032877763` ns/iter	`1.02`
`Schema_Frame_WoT_References`	`8533283.642360142` ns/iter	`7531508.155491041` ns/iter	`1.13`
`Schema_Frame_OMC_References`	`39415864.38347311` ns/iter	`37553624.10294382` ns/iter	`1.05`
`Schema_Frame_OMC_Locations`	`37575207.25852565` ns/iter	`37188267.70782471` ns/iter	`1.01`
`Schema_Frame_ISO_Language_Locations`	`173772752.28500366` ns/iter	`157133245.46813965` ns/iter	`1.11`
`Schema_Iterator_ISO_Language`	`4580634.435017903` ns/iter	`3741694.7515387284` ns/iter	`1.22`
`Schema_PointerWalker_ISO_Language`	`9011024.310265059` ns/iter	`8257766.102635583` ns/iter	`1.09`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`147646784.78240967` ns/iter	`147637987.13684082` ns/iter	`1.00`
`Schema_Tracker_ISO_Language`	`38951661.85167101` ns/iter	`39611992.083097756` ns/iter	`0.98`
`Schema_Tracker_ISO_Language_To_JSON`	`24166440.963745117` ns/iter	`24943470.95489502` ns/iter	`0.97`
`Schema_Format_ISO_Language_To_JSON`	`150465822.21984863` ns/iter	`167251050.47225952` ns/iter	`0.90`
`Schema_Bundle_Meta_2020_12`	`1808151.5278648492` ns/iter	`1854765.6106167152` ns/iter	`0.97`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`195918877.91951498` ns/iter	`207677602.76794434` ns/iter	`0.94`
`Alterschema_Check_Readibility_OMC`	`38519051.339891225` ns/iter	`41397389.243630804` ns/iter	`0.93`

This comment was automatically generated by workflow using github-action-benchmark.

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jviotti force-pushed the fileview branch from b64b41e to 351854b Compare January 1, 2026 17:14

Implement a cross-platform mmap class in src/lang/io

39177dd

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>

jviotti force-pushed the fileview branch from 351854b to 39177dd Compare January 1, 2026 17:17

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jviotti merged commit f1d58ad into main Jan 1, 2026
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jviotti deleted the fileview branch January 1, 2026 17:46

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Implement a cross-platform `mmap` class in `src/lang/io`#2156

Implement a cross-platform `mmap` class in `src/lang/io`#2156
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