Implement an IO function to mirror a directory using hardlinks by jviotti · Pull Request #2276 · sourcemeta/core

jviotti · 2026-02-26T17:18:08Z

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

augmentcode · 2026-02-26T17:21:20Z

🤖 Augment PR Summary

Summary: This PR introduces a new I/O utility to mirror an on-disk directory tree by creating directories and hard-linking regular files.

Changes:

Adds the exported API sourcemeta::core::hardlink_directory(source, destination) in src/lang/io/include/sourcemeta/core/io.h.
Implements the function in src/lang/io/io.cc using std::filesystem::recursive_directory_iterator, creating directories and hard-linking regular files.
Adds a new unit test file test/io/io_hardlink_directory_test.cc covering structure mirroring, link/inode sharing, unlink+rewrite independence, empty sources, and deep nesting.
Updates the IO test target to include the new test and define BUILD_DIRECTORY for filesystem-backed tests.
Adjusts TemporaryDirectory tests to use BUILD_DIRECTORY instead of the OS temp directory, improving hermeticity and avoiding environment-specific temp path issues.

Technical Notes: Hard links require source and destination to be on the same filesystem; the helper links only regular files and creates destination directories as needed.

_{🤖 Was this summary useful? React with 👍 or 👎}

augmentcode

Review completed. 3 suggestions posted.

Comment augment review to trigger a new review at any time.

augmentcode · 2026-02-26T17:21:21Z

src/lang/io/io.cc

+  assert(std::filesystem::is_directory(source));
+  assert(!std::filesystem::exists(destination) ||
+         std::filesystem::is_directory(destination));
+  std::filesystem::create_directories(destination);


hardlink_directory creates destination before walking source; if destination is inside source (or equal to it), the recursive iterator can traverse the newly created tree and lead to unbounded recursion/work. Consider explicitly rejecting that case.

Severity: high

_{🤖 Was this useful? React with 👍 or 👎, or 🚀 if it prevented an incident/outage.}

augmentcode · 2026-02-26T17:21:21Z

src/lang/io/io.cc

+       std::filesystem::recursive_directory_iterator{source}) {
+    const auto target{destination /
+                      std::filesystem::relative(entry.path(), source)};
+    if (entry.is_directory()) {


directory_entry::is_directory() / is_regular_file() follow symlinks, so a symlink-to-dir/file could be treated as a real dir/file and end up mirrored incorrectly (e.g., creating a directory instead of preserving the symlink). If symlinks should be skipped/preserved, this likely needs an explicit is_symlink()/symlink_status() check.

Severity: medium

_{🤖 Was this useful? React with 👍 or 👎, or 🚀 if it prevented an incident/outage.}

augmentcode · 2026-02-26T17:21:21Z

src/lang/io/io.cc

+    if (entry.is_directory()) {
+      std::filesystem::create_directories(target);
+    } else if (entry.is_regular_file()) {
+      std::filesystem::create_hard_link(entry.path(), target);


Since destination is allowed to already exist, create_hard_link will throw if target already exists (non-empty destination or re-run). It might be worth documenting whether destination must be empty or handling collisions deterministically.

Severity: low

_{🤖 Was this useful? React with 👍 or 👎, or 🚀 if it prevented an incident/outage.}

cubic-dev-ai

1 issue found across 5 files

Prompt for AI agents (unresolved issues)


Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="src/lang/io/io.cc">

<violation number="1" location="src/lang/io/io.cc:55">
P1: Prevent mirroring into a destination that is inside (or the same as) the source; otherwise the recursive iterator will walk the newly created destination and repeatedly nest copies, leading to unbounded recursion/disk usage.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

src/lang/io/io.cc

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

github-actions

Benchmark (linux/llvm)

Details

Benchmark suite	Current: `5a57ad1`	Previous: `f4f655d`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`3.111103930164889` ns/iter	`3.1172141592099334` ns/iter	`1.00`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`3.110523583742918` ns/iter	`3.1100564672847493` ns/iter	`1.00`
`Regex_Period_Asterisk`	`3.119309553697485` ns/iter	`3.109813091865993` ns/iter	`1.00`
`Regex_Group_Period_Asterisk_Group`	`3.1094791896912333` ns/iter	`3.111108684831945` ns/iter	`1.00`
`Regex_Period_Plus`	`2.810643887385082` ns/iter	`3.1198149861860784` ns/iter	`0.90`
`Regex_Period`	`2.8290720803560565` ns/iter	`3.1112110769962245` ns/iter	`0.91`
`Regex_Caret_Period_Plus_Dollar`	`2.8765003104991234` ns/iter	`3.111223474058509` ns/iter	`0.92`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`2.832203751099353` ns/iter	`3.110424942990577` ns/iter	`0.91`
`Regex_Caret_Period_Asterisk_Dollar`	`2.800182633495936` ns/iter	`3.109763825711252` ns/iter	`0.90`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`2.798495810818994` ns/iter	`3.1130399493176237` ns/iter	`0.90`
`Regex_Caret_X_Hyphen`	`10.64408589766149` ns/iter	`13.070853800445347` ns/iter	`0.81`
`Regex_Period_Md_Dollar`	`27.25252696641725` ns/iter	`27.58323147265174` ns/iter	`0.99`
`Regex_Caret_Slash_Period_Asterisk`	`6.547421135232105` ns/iter	`6.221794406980572` ns/iter	`1.05`
`Regex_Caret_Period_Range_Dollar`	`4.046199310191587` ns/iter	`3.1107173280296254` ns/iter	`1.30`
`Regex_Nested_Backtrack`	`49.821706637306654` ns/iter	`67.30726220788394` ns/iter	`0.74`
`JSON_Array_Of_Objects_Unique`	`430.91359387058986` ns/iter	`448.84102971735854` ns/iter	`0.96`
`JSON_Parse_1`	`6485.565984078924` ns/iter	`6464.888617976841` ns/iter	`1.00`
`JSON_Parse_Real`	`11726.920190800833` ns/iter	`11319.311418516962` ns/iter	`1.04`
`JSON_Parse_Decimal`	`12003.287226752178` ns/iter	`13046.383373463112` ns/iter	`0.92`
`JSON_Parse_Schema_ISO_Language`	`3619172.2135416884` ns/iter	`3662649.743455285` ns/iter	`0.99`
`JSON_Fast_Hash_Helm_Chart_Lock`	`61.625779049304356` ns/iter	`61.2941383177788` ns/iter	`1.01`
`JSON_Equality_Helm_Chart_Lock`	`172.26347882803108` ns/iter	`182.1147147073309` ns/iter	`0.95`
`JSON_Divisible_By_Decimal`	`618.268295415938` ns/iter	`594.884317731431` ns/iter	`1.04`
`JSON_String_Equal/10`	`6.551028916921601` ns/iter	`7.162659975335772` ns/iter	`0.91`
`JSON_String_Equal/100`	`7.169143044728795` ns/iter	`7.791722962247808` ns/iter	`0.92`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.9355273247066294` ns/iter	`0.9389600744095493` ns/iter	`1.00`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`10.269355712250693` ns/iter	`14.616271196763` ns/iter	`0.70`
`JSON_String_Fast_Hash/10`	`2.80047173471714` ns/iter	`2.4890095785990947` ns/iter	`1.13`
`JSON_String_Fast_Hash/100`	`2.801063085428809` ns/iter	`2.489292034368238` ns/iter	`1.13`
`JSON_String_Key_Hash/10`	`2.1814259401384843` ns/iter	`2.747857289520358` ns/iter	`0.79`
`JSON_String_Key_Hash/100`	`6.533747713225301` ns/iter	`9.053698379112516` ns/iter	`0.72`
`JSON_Object_Defines_Miss_Same_Length`	`3.738219884497462` ns/iter	`3.7829984499915934` ns/iter	`0.99`
`JSON_Object_Defines_Miss_Too_Small`	`3.7399083452822115` ns/iter	`3.7382095420090815` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Too_Large`	`3.744293973407715` ns/iter	`3.736837879352388` ns/iter	`1.00`
`Pointer_Object_Traverse`	`44.26575756017891` ns/iter	`45.04948347106831` ns/iter	`0.98`
`Pointer_Object_Try_Traverse`	`53.46944129204382` ns/iter	`56.3936321365806` ns/iter	`0.95`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`309.24052750229606` ns/iter	`302.55917392668044` ns/iter	`1.02`
`Pointer_Walker_Schema_ISO_Language`	`3237916.490909046` ns/iter	`3110357.637168279` ns/iter	`1.04`
`Schema_Frame_WoT_References`	`4857076.812499707` ns/iter	`4829278.13793124` ns/iter	`1.01`
`Schema_Frame_OMC_References`	`21260322.771429077` ns/iter	`19985477.885714836` ns/iter	`1.06`
`Schema_Frame_OMC_Locations`	`19530698.648647584` ns/iter	`18332774.8684196` ns/iter	`1.07`
`Schema_Frame_ISO_Language_Locations`	`103902104.00000417` ns/iter	`102940938.33334728` ns/iter	`1.01`
`Schema_Frame_KrakenD_References`	`42854211.82353008` ns/iter	`38421191.05555892` ns/iter	`1.12`
`Schema_Frame_KrakenD_Reachable`	`596533343.9999086` ns/iter	`590997132.0000978` ns/iter	`1.01`
`Schema_Iterator_ISO_Language`	`2428045.5993028525` ns/iter	`2360705.7676765015` ns/iter	`1.03`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`132453738.75000155` ns/iter	`134375696.00000644` ns/iter	`0.99`
`Schema_Tracker_ISO_Language`	`29327900.333332952` ns/iter	`27674098.833334897` ns/iter	`1.06`
`Schema_Tracker_ISO_Language_To_JSON`	`25114431.481479526` ns/iter	`25250267.296293583` ns/iter	`0.99`
`Schema_Format_ISO_Language_To_JSON`	`108712372.49998938` ns/iter	`109824641.8333512` ns/iter	`0.99`
`Schema_Bundle_Meta_2020_12`	`1659509.6753561853` ns/iter	`1652251.8042960751` ns/iter	`1.00`
`Schema_Frame_Many_Resources_References`	`372034892.49998254` ns/iter	`366802886.00001633` ns/iter	`1.01`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`216863232.33332887` ns/iter	`218202785.6666385` ns/iter	`0.99`
`Alterschema_Check_Readibility_OMC`	`32354035.28571537` ns/iter	`32177820.86363224` ns/iter	`1.01`
`Alterschema_Apply_Readibility_KrakenD`	`587324747.9999008` ns/iter	`603704688.9999828` ns/iter	`0.97`
`EditorSchema_ForEditor_EmbeddedResources`	`13507492.980767649` ns/iter	`13635575.058811793` ns/iter	`0.99`
`URITemplateRouter_Create`	`17282.401044988826` ns/iter	`16384.529010316826` ns/iter	`1.05`
`URITemplateRouter_Match`	`183.01647172864435` ns/iter	`190.0155686612536` ns/iter	`0.96`
`URITemplateRouterView_Restore`	`6789.056927244955` ns/iter	`6911.057347634993` ns/iter	`0.98`
`URITemplateRouterView_Match`	`153.22395304231833` ns/iter	`143.50491508535978` ns/iter	`1.07`

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

github-actions

Benchmark (macos/llvm)

Details

Benchmark suite	Current: `5a57ad1`	Previous: `f4f655d`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`1.7205797512538308` ns/iter	`1.844746472720158` ns/iter	`0.93`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`1.6767802535756366` ns/iter	`2.2476097639278505` ns/iter	`0.75`
`Regex_Period_Asterisk`	`1.6992594159814651` ns/iter	`1.864787113201521` ns/iter	`0.91`
`Regex_Group_Period_Asterisk_Group`	`2.005591808363679` ns/iter	`2.1498487204275825` ns/iter	`0.93`
`Regex_Period_Plus`	`2.570804184858387` ns/iter	`2.160578781058244` ns/iter	`1.19`
`Regex_Period`	`2.4113244897203394` ns/iter	`2.1097227303620443` ns/iter	`1.14`
`Regex_Caret_Period_Plus_Dollar`	`2.5395059857698965` ns/iter	`2.227344376776958` ns/iter	`1.14`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`2.6443627581482514` ns/iter	`2.224463803567951` ns/iter	`1.19`
`Regex_Caret_Period_Asterisk_Dollar`	`2.0375222090258593` ns/iter	`1.989441020016859` ns/iter	`1.02`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`2.1889502204626785` ns/iter	`2.143159077332581` ns/iter	`1.02`
`Regex_Caret_X_Hyphen`	`7.647346777807044` ns/iter	`7.848758304714395` ns/iter	`0.97`
`Regex_Period_Md_Dollar`	`24.45787932554691` ns/iter	`34.34207291159958` ns/iter	`0.71`
`Regex_Caret_Slash_Period_Asterisk`	`5.886628022454927` ns/iter	`9.717284647585037` ns/iter	`0.61`
`Regex_Caret_Period_Range_Dollar`	`2.092814724818934` ns/iter	`2.9511714233862274` ns/iter	`0.71`
`Regex_Nested_Backtrack`	`28.872626899890644` ns/iter	`50.95998884700925` ns/iter	`0.57`
`JSON_Array_Of_Objects_Unique`	`367.9876860708655` ns/iter	`572.6334708582962` ns/iter	`0.64`
`JSON_Parse_1`	`4494.297924930186` ns/iter	`8107.412520894573` ns/iter	`0.55`
`JSON_Parse_Real`	`7125.2219701824415` ns/iter	`11046.909360178486` ns/iter	`0.64`
`JSON_Parse_Decimal`	`8800.54846306458` ns/iter	`11983.07338376348` ns/iter	`0.73`
`JSON_Parse_Schema_ISO_Language`	`4257331.340425557` ns/iter	`6345856.696968481` ns/iter	`0.67`
`JSON_Fast_Hash_Helm_Chart_Lock`	`64.2058183063613` ns/iter	`82.18877405729341` ns/iter	`0.78`
`JSON_Equality_Helm_Chart_Lock`	`142.1192442839929` ns/iter	`161.90489217832416` ns/iter	`0.88`
`JSON_Divisible_By_Decimal`	`450.1781830361545` ns/iter	`506.9292275486708` ns/iter	`0.89`
`JSON_String_Equal/10`	`6.757844496672762` ns/iter	`6.347026067776119` ns/iter	`1.06`
`JSON_String_Equal/100`	`7.029892047842039` ns/iter	`5.890762119284736` ns/iter	`1.19`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.9298901945047312` ns/iter	`0.763064161996621` ns/iter	`1.22`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`4.137390495539489` ns/iter	`3.3882620731106172` ns/iter	`1.22`
`JSON_String_Fast_Hash/10`	`2.9275862066300373` ns/iter	`2.377703876374044` ns/iter	`1.23`
`JSON_String_Fast_Hash/100`	`2.4567223820328747` ns/iter	`2.0125323493567717` ns/iter	`1.22`
`JSON_String_Key_Hash/10`	`1.976594288685461` ns/iter	`1.315072246393345` ns/iter	`1.50`
`JSON_String_Key_Hash/100`	`3.36863297669564` ns/iter	`2.1640995470057494` ns/iter	`1.56`
`JSON_Object_Defines_Miss_Same_Length`	`2.933606722596829` ns/iter	`2.4652240523143067` ns/iter	`1.19`
`JSON_Object_Defines_Miss_Too_Small`	`2.911243402114783` ns/iter	`2.4866682591478515` ns/iter	`1.17`
`JSON_Object_Defines_Miss_Too_Large`	`2.785235229300232` ns/iter	`2.472302024046907` ns/iter	`1.13`
`Pointer_Object_Traverse`	`19.113127399140787` ns/iter	`18.895185719354714` ns/iter	`1.01`
`Pointer_Object_Try_Traverse`	`26.60838937147772` ns/iter	`28.178961549178318` ns/iter	`0.94`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`163.53474419024053` ns/iter	`194.80482641741327` ns/iter	`0.84`
`Pointer_Walker_Schema_ISO_Language`	`4912104.79104503` ns/iter	`5966304.7450982835` ns/iter	`0.82`
`Schema_Frame_WoT_References`	`4654454.006493756` ns/iter	`6113225.543478383` ns/iter	`0.76`
`Schema_Frame_OMC_References`	`24072790.206897195` ns/iter	`29597737.874998603` ns/iter	`0.81`
`Schema_Frame_OMC_Locations`	`22217853.448276807` ns/iter	`26219540.076917488` ns/iter	`0.85`
`Schema_Frame_ISO_Language_Locations`	`82379476.88889511` ns/iter	`94280944.33330141` ns/iter	`0.87`
`Schema_Frame_KrakenD_References`	`45326199.999999516` ns/iter	`57328919.846161` ns/iter	`0.79`
`Schema_Frame_KrakenD_Reachable`	`404496020.50006205` ns/iter	`632233583.0000156` ns/iter	`0.64`
`Schema_Iterator_ISO_Language`	`2215195.9050850533` ns/iter	`3235104.343220536` ns/iter	`0.68`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`101616434.57143198` ns/iter	`94011916.571422` ns/iter	`1.08`
`Schema_Tracker_ISO_Language`	`43413340.705883995` ns/iter	`31849534.090910807` ns/iter	`1.36`
`Schema_Tracker_ISO_Language_To_JSON`	`22827391.222222105` ns/iter	`14095422.340910153` ns/iter	`1.62`
`Schema_Format_ISO_Language_To_JSON`	`127742423.500005` ns/iter	`79117812.37504555` ns/iter	`1.61`
`Schema_Bundle_Meta_2020_12`	`1597273.9107111492` ns/iter	`1250164.6660941` ns/iter	`1.28`
`Schema_Frame_Many_Resources_References`	`467979708.50002456` ns/iter	`284482333.49990916` ns/iter	`1.65`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`188114875.000025` ns/iter	`144747258.40000245` ns/iter	`1.30`
`Alterschema_Check_Readibility_OMC`	`42149886.55556024` ns/iter	`31971657.608694486` ns/iter	`1.32`
`Alterschema_Apply_Readibility_KrakenD`	`677654207.9999217` ns/iter	`471833145.5001135` ns/iter	`1.44`
`EditorSchema_ForEditor_EmbeddedResources`	`12783498.384609314` ns/iter	`10040978.614275835` ns/iter	`1.27`
`URITemplateRouter_Create`	`17298.725525081703` ns/iter	`16168.440763404855` ns/iter	`1.07`
`URITemplateRouter_Match`	`175.2402826439465` ns/iter	`188.34631887579002` ns/iter	`0.93`
`URITemplateRouterView_Restore`	`12889.235752144034` ns/iter	`13825.171668475426` ns/iter	`0.93`
`URITemplateRouterView_Match`	`127.27955405827998` ns/iter	`140.28052140543454` ns/iter	`0.91`

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

github-actions

Benchmark (windows/msvc)

Details

Benchmark suite	Current: `5a57ad1`	Previous: `f4f655d`	Ratio
`Regex_Lower_S_Or_Upper_S_Asterisk`	`4.126355543082546` ns/iter	`4.132108324047456` ns/iter	`1.00`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`4.1016429222762065` ns/iter	`4.098135044642452` ns/iter	`1.00`
`Regex_Period_Asterisk`	`4.731492867703999` ns/iter	`4.761677678571021` ns/iter	`0.99`
`Regex_Group_Period_Asterisk_Group`	`4.41539952040829` ns/iter	`4.4291731250012845` ns/iter	`1.00`
`Regex_Period_Plus`	`5.047631742197707` ns/iter	`5.0495249999994485` ns/iter	`1.00`
`Regex_Period`	`5.045608000000357` ns/iter	`5.068198000001303` ns/iter	`1.00`
`Regex_Caret_Period_Plus_Dollar`	`4.733765045698862` ns/iter	`4.758532376692641` ns/iter	`0.99`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`4.421788749999678` ns/iter	`4.438898837304047` ns/iter	`1.00`
`Regex_Caret_Period_Asterisk_Dollar`	`4.422986127532498` ns/iter	`4.426588124999853` ns/iter	`1.00`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`4.10017238656355` ns/iter	`4.115813355564276` ns/iter	`1.00`
`Regex_Caret_X_Hyphen`	`7.260406250001747` ns/iter	`7.328664062501591` ns/iter	`0.99`
`Regex_Period_Md_Dollar`	`35.62325712752302` ns/iter	`36.00392252676101` ns/iter	`0.99`
`Regex_Caret_Slash_Period_Asterisk`	`6.951165178571322` ns/iter	`7.005639508929866` ns/iter	`0.99`
`Regex_Caret_Period_Range_Dollar`	`4.110208846625397` ns/iter	`4.143116850829377` ns/iter	`0.99`
`Regex_Nested_Backtrack`	`102.72954687501112` ns/iter	`99.7784218749942` ns/iter	`1.03`
`JSON_Array_Of_Objects_Unique`	`491.68480000003` ns/iter	`495.52220000009584` ns/iter	`0.99`
`JSON_Parse_1`	`8877.00054910639` ns/iter	`9069.266208632387` ns/iter	`0.98`
`JSON_Parse_Real`	`16105.64285714235` ns/iter	`15835.676339282907` ns/iter	`1.02`
`JSON_Parse_Decimal`	`16741.343580422792` ns/iter	`16549.35791980633` ns/iter	`1.01`
`JSON_Parse_Schema_ISO_Language`	`6159328.571430122` ns/iter	`6440273.214287068` ns/iter	`0.96`
`JSON_Fast_Hash_Helm_Chart_Lock`	`71.69137500000033` ns/iter	`69.92586607142113` ns/iter	`1.03`
`JSON_Equality_Helm_Chart_Lock`	`263.92338008586034` ns/iter	`261.06601388683737` ns/iter	`1.01`
`JSON_Divisible_By_Decimal`	`1168.9135937498208` ns/iter	`1179.3098437497208` ns/iter	`0.99`
`JSON_String_Equal/10`	`12.27131785714164` ns/iter	`12.368448214289174` ns/iter	`0.99`
`JSON_String_Equal/100`	`12.971637499999492` ns/iter	`13.284735714287471` ns/iter	`0.98`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`1.8892775012652605` ns/iter	`1.9032760731275487` ns/iter	`0.99`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`12.576216071429208` ns/iter	`13.331869642858658` ns/iter	`0.94`
`JSON_String_Fast_Hash/10`	`3.790333386089603` ns/iter	`3.88306981449492` ns/iter	`0.98`
`JSON_String_Fast_Hash/100`	`3.861064174106587` ns/iter	`4.064055944757999` ns/iter	`0.95`
`JSON_String_Key_Hash/10`	`4.104166748401259` ns/iter	`4.464919484612912` ns/iter	`0.92`
`JSON_String_Key_Hash/100`	`16.597645089286214` ns/iter	`14.436482078406222` ns/iter	`1.15`
`JSON_Object_Defines_Miss_Same_Length`	`3.525131445384446` ns/iter	`3.519448520500817` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Too_Small`	`5.029883000001973` ns/iter	`5.1146517857136224` ns/iter	`0.98`
`JSON_Object_Defines_Miss_Too_Large`	`4.0867136680114236` ns/iter	`4.189221158844105` ns/iter	`0.98`
`Pointer_Object_Traverse`	`52.96736000000237` ns/iter	`53.405019999991055` ns/iter	`0.99`
`Pointer_Object_Try_Traverse`	`72.72015625000095` ns/iter	`74.61685267856463` ns/iter	`0.97`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`169.51126513492966` ns/iter	`150.1090357142841` ns/iter	`1.13`
`Pointer_Walker_Schema_ISO_Language`	`11500503.124999285` ns/iter	`12837399.999999175` ns/iter	`0.90`
`Schema_Frame_WoT_References`	`9826202.66666648` ns/iter	`10369922.666668572` ns/iter	`0.95`
`Schema_Frame_OMC_References`	`43043594.11765504` ns/iter	`45746227.272729814` ns/iter	`0.94`
`Schema_Frame_OMC_Locations`	`39477683.33332786` ns/iter	`41361375.000008136` ns/iter	`0.95`
`Schema_Frame_ISO_Language_Locations`	`197279900.00001228` ns/iter	`212467299.99999538` ns/iter	`0.93`
`Schema_Frame_KrakenD_References`	`89654628.57141964` ns/iter	`94433971.42857586` ns/iter	`0.95`
`Schema_Frame_KrakenD_Reachable`	`509395600.0000617` ns/iter	`542267799.9999906` ns/iter	`0.94`
`Schema_Iterator_ISO_Language`	`4203395.783132505` ns/iter	`4542705.000000069` ns/iter	`0.93`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`253737000.00000098` ns/iter	`264814166.66668642` ns/iter	`0.96`
`Schema_Tracker_ISO_Language`	`45745790.90907801` ns/iter	`49791460.00000583` ns/iter	`0.92`
`Schema_Tracker_ISO_Language_To_JSON`	`52207439.999983765` ns/iter	`56527970.00000192` ns/iter	`0.92`
`Schema_Format_ISO_Language_To_JSON`	`187551050.00008142` ns/iter	`206645666.6666454` ns/iter	`0.91`
`Schema_Bundle_Meta_2020_12`	`2773116.6666576494` ns/iter	`2841964.830510841` ns/iter	`0.98`
`Schema_Frame_Many_Resources_References`	`1454600899.9998322` ns/iter	`1536525199.9999146` ns/iter	`0.95`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`314779499.999986` ns/iter	`336517800.0000242` ns/iter	`0.94`
`Alterschema_Check_Readibility_OMC`	`57984790.90909` ns/iter	`62817936.36363049` ns/iter	`0.92`
`Alterschema_Apply_Readibility_KrakenD`	`985114500.0000088` ns/iter	`1085041700.000147` ns/iter	`0.91`
`EditorSchema_ForEditor_EmbeddedResources`	`27375343.99998367` ns/iter	`30114440.9091049` ns/iter	`0.91`
`URITemplateRouter_Create`	`22435.915625003134` ns/iter	`22435.892456558086` ns/iter	`1.00`
`URITemplateRouter_Match`	`207.82362018645225` ns/iter	`216.87399999997584` ns/iter	`0.96`
`URITemplateRouterView_Restore`	`30619.129464294507` ns/iter	`31583.281249995467` ns/iter	`0.97`
`URITemplateRouterView_Match`	`153.44450892855426` ns/iter	`157.21633928572084` ns/iter	`0.98`

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

github-actions

Benchmark (linux/gcc)

Details

Benchmark suite	Current: `5a57ad1`	Previous: `932001d`	Ratio
`URITemplateRouter_Create`	`14874.058669393056` ns/iter	`14788.961016841573` ns/iter	`1.01`
`URITemplateRouter_Match`	`153.36909782915538` ns/iter	`152.9655834283247` ns/iter	`1.00`
`URITemplateRouterView_Restore`	`7958.934883244426` ns/iter	`8384.390101033496` ns/iter	`0.95`
`URITemplateRouterView_Match`	`129.8021638225026` ns/iter	`128.14765925448395` ns/iter	`1.01`
`EditorSchema_ForEditor_EmbeddedResources`	`14331955.79594045` ns/iter	`14818392.541675014` ns/iter	`0.97`
`Alterschema_Check_Readibility_ISO_Language_Set_3`	`220155779.99998942` ns/iter	`218410956.9999843` ns/iter	`1.01`
`Alterschema_Check_Readibility_OMC`	`36288081.68420954` ns/iter	`35583898.30000124` ns/iter	`1.02`
`Alterschema_Apply_Readibility_KrakenD`	`666697526.0002346` ns/iter	`635134483.9997637` ns/iter	`1.05`
`Schema_Frame_WoT_References`	`5394275.5877855895` ns/iter	`5458533.141732041` ns/iter	`0.99`
`Schema_Frame_OMC_References`	`23007421.793103088` ns/iter	`22727141.225804217` ns/iter	`1.01`
`Schema_Frame_OMC_Locations`	`21530280.437502824` ns/iter	`21290662.42424194` ns/iter	`1.01`
`Schema_Frame_ISO_Language_Locations`	`108120714.16667853` ns/iter	`108904241.33333455` ns/iter	`0.99`
`Schema_Frame_KrakenD_References`	`43822130.06249458` ns/iter	`44164804.31248715` ns/iter	`0.99`
`Schema_Frame_KrakenD_Reachable`	`620081922.9998161` ns/iter	`631160464.9997662` ns/iter	`0.98`
`Schema_Iterator_ISO_Language`	`2757326.953488602` ns/iter	`2764350.6653540377` ns/iter	`1.00`
`Schema_Frame_ISO_Language_Locations_To_JSON`	`256120327.66662195` ns/iter	`256593512.6666924` ns/iter	`1.00`
`Schema_Tracker_ISO_Language`	`33674034.00000057` ns/iter	`30701207.695647493` ns/iter	`1.10`
`Schema_Tracker_ISO_Language_To_JSON`	`32585462.81817458` ns/iter	`30719590.545448806` ns/iter	`1.06`
`Schema_Format_ISO_Language_To_JSON`	`117858871.50002356` ns/iter	`117612424.6666935` ns/iter	`1.00`
`Schema_Bundle_Meta_2020_12`	`1891654.3062298382` ns/iter	`1914095.7486304296` ns/iter	`0.99`
`Schema_Frame_Many_Resources_References`	`395191036.0000284` ns/iter	`394910807.4999685` ns/iter	`1.00`
`Pointer_Object_Traverse`	`27.571344365505528` ns/iter	`27.562737372986717` ns/iter	`1.00`
`Pointer_Object_Try_Traverse`	`27.272505996987018` ns/iter	`27.282953745389925` ns/iter	`1.00`
`Pointer_Push_Back_Pointer_To_Weak_Pointer`	`157.3659990573837` ns/iter	`162.9100280082002` ns/iter	`0.97`
`Pointer_Walker_Schema_ISO_Language`	`3613849.5706800977` ns/iter	`3712010.7424241244` ns/iter	`0.97`
`JSON_Array_Of_Objects_Unique`	`423.3066090453622` ns/iter	`410.84844709782794` ns/iter	`1.03`
`JSON_Parse_1`	`8347.24444073693` ns/iter	`8464.043888962962` ns/iter	`0.99`
`JSON_Parse_Real`	`12699.595793124448` ns/iter	`12634.15563039969` ns/iter	`1.01`
`JSON_Parse_Decimal`	`18656.344974080745` ns/iter	`18688.23326826741` ns/iter	`1.00`
`JSON_Parse_Schema_ISO_Language`	`4706526.906040882` ns/iter	`4726389.580000615` ns/iter	`1.00`
`JSON_Fast_Hash_Helm_Chart_Lock`	`61.45584097458682` ns/iter	`53.26228830958655` ns/iter	`1.15`
`JSON_Equality_Helm_Chart_Lock`	`157.0414729323014` ns/iter	`159.9301232420685` ns/iter	`0.98`
`JSON_Divisible_By_Decimal`	`585.652654645258` ns/iter	`579.8566887271725` ns/iter	`1.01`
`JSON_String_Equal/10`	`6.312399612946072` ns/iter	`6.320354984765237` ns/iter	`1.00`
`JSON_String_Equal/100`	`6.932963447124537` ns/iter	`6.9376031775535765` ns/iter	`1.00`
`JSON_String_Equal_Small_By_Perfect_Hash/10`	`0.6392232900702519` ns/iter	`0.6235508150177344` ns/iter	`1.03`
`JSON_String_Equal_Small_By_Runtime_Perfect_Hash/10`	`13.489533909201368` ns/iter	`13.80740123581892` ns/iter	`0.98`
`JSON_String_Fast_Hash/10`	`1.9078339559533422` ns/iter	`1.9068406442373285` ns/iter	`1.00`
`JSON_String_Fast_Hash/100`	`1.9052177696860182` ns/iter	`1.9061313327511429` ns/iter	`1.00`
`JSON_String_Key_Hash/10`	`1.255205350253443` ns/iter	`1.2459344555484697` ns/iter	`1.01`
`JSON_String_Key_Hash/100`	`12.438748234428543` ns/iter	`12.441497003841265` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Same_Length`	`3.4357354407238283` ns/iter	`3.4230194664371525` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Too_Small`	`3.423725871966768` ns/iter	`3.4228693197547786` ns/iter	`1.00`
`JSON_Object_Defines_Miss_Too_Large`	`3.4244468520853255` ns/iter	`3.423555969599852` ns/iter	`1.00`
`Regex_Lower_S_Or_Upper_S_Asterisk`	`3.1124014639987165` ns/iter	`3.1137278326489506` ns/iter	`1.00`
`Regex_Caret_Lower_S_Or_Upper_S_Asterisk_Dollar`	`3.1120652349251228` ns/iter	`3.114822126140609` ns/iter	`1.00`
`Regex_Period_Asterisk`	`3.113109912586799` ns/iter	`3.1250796066100377` ns/iter	`1.00`
`Regex_Group_Period_Asterisk_Group`	`3.1140062446078294` ns/iter	`3.115238751037969` ns/iter	`1.00`
`Regex_Period_Plus`	`2.8009849404362237` ns/iter	`2.802532653067045` ns/iter	`1.00`
`Regex_Period`	`2.801262557367535` ns/iter	`2.802090209367281` ns/iter	`1.00`
`Regex_Caret_Period_Plus_Dollar`	`2.801206551526696` ns/iter	`2.8013955672339383` ns/iter	`1.00`
`Regex_Caret_Group_Period_Plus_Group_Dollar`	`2.803330750712762` ns/iter	`2.802981054367845` ns/iter	`1.00`
`Regex_Caret_Period_Asterisk_Dollar`	`4.047241831078428` ns/iter	`4.045450474383607` ns/iter	`1.00`
`Regex_Caret_Group_Period_Asterisk_Group_Dollar`	`4.044494690105497` ns/iter	`4.046279063012166` ns/iter	`1.00`
`Regex_Caret_X_Hyphen`	`13.69480808037215` ns/iter	`13.071841554818416` ns/iter	`1.05`
`Regex_Period_Md_Dollar`	`35.929812300234936` ns/iter	`39.00868797087494` ns/iter	`0.92`
`Regex_Caret_Slash_Period_Asterisk`	`8.716127669865324` ns/iter	`8.712587889821446` ns/iter	`1.00`
`Regex_Caret_Period_Range_Dollar`	`4.0480778849609145` ns/iter	`4.044261936815824` ns/iter	`1.00`
`Regex_Nested_Backtrack`	`57.25707997055703` ns/iter	`62.44417784371207` ns/iter	`0.92`

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

augmentcode bot reviewed Feb 26, 2026

View reviewed changes

cubic-dev-ai bot reviewed Feb 26, 2026

View reviewed changes

src/lang/io/io.cc Show resolved Hide resolved

Implement an IO function to mirror a directory using hardlinks

5a57ad1

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

jviotti force-pushed the hardlink-mirror branch from 777ebd4 to 5a57ad1 Compare February 26, 2026 17:29

github-actions bot reviewed Feb 26, 2026

View reviewed changes

jviotti merged commit 084769e into main Feb 26, 2026
12 checks passed

jviotti deleted the hardlink-mirror branch February 26, 2026 17:49

github-actions bot reviewed Feb 26, 2026

View reviewed changes

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Implement an IO function to mirror a directory using hardlinks#2276

Implement an IO function to mirror a directory using hardlinks#2276
jviotti merged 1 commit intomainfrom
hardlink-mirror

jviotti commented Feb 26, 2026

Uh oh!

augmentcode bot commented Feb 26, 2026

Uh oh!

augmentcode bot left a comment

Uh oh!

augmentcode bot Feb 26, 2026

Uh oh!

augmentcode bot Feb 26, 2026

Uh oh!

augmentcode bot Feb 26, 2026

Uh oh!

cubic-dev-ai bot left a comment

Uh oh!

Uh oh!

github-actions bot left a comment

Uh oh!

github-actions bot left a comment

Uh oh!

github-actions bot left a comment

Uh oh!

Uh oh!

github-actions bot left a comment

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

1 participant

Uh oh!

Conversation

jviotti commented Feb 26, 2026

Uh oh!

augmentcode bot commented Feb 26, 2026

Uh oh!

augmentcode bot left a comment

Choose a reason for hiding this comment

Uh oh!

augmentcode bot Feb 26, 2026

Choose a reason for hiding this comment

Uh oh!

augmentcode bot Feb 26, 2026

Choose a reason for hiding this comment

Uh oh!

augmentcode bot Feb 26, 2026

Choose a reason for hiding this comment

Uh oh!

cubic-dev-ai bot left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

github-actions bot left a comment

Choose a reason for hiding this comment

Benchmark (linux/llvm)

Uh oh!

github-actions bot left a comment

Choose a reason for hiding this comment

Benchmark (macos/llvm)

Uh oh!

github-actions bot left a comment

Choose a reason for hiding this comment

Benchmark (windows/msvc)

Uh oh!

Uh oh!

github-actions bot left a comment

Choose a reason for hiding this comment

Benchmark (linux/gcc)

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

1 participant