php-in-php: getrusage() — delete phpc_getrusage.c (~78 lines), native VmProcess without host getrusage()

Problem

getrusage() is implemented in PHP (ext/standard/getrusage.php, VmProcess.php, JitGetrusage.php) but JIT/AOT still call __compiler_getrusage in lib/AOT/runtime/phpc_getrusage.c (~78 lines). VM VmProcess::getrusage() delegates to host \getrusage() — bootstrap/self-host must not depend on Zend for process stats.

Parity gaps tracked separately in #4600 (numeric-string who, TypeError messages).

php-src reference

php/php-src ext/standard/basic_functions.c — PHP_FUNCTION(getrusage), who validation
php/php-src ext/standard/php_getrusage.h — libc getrusage(2) wrapper

Repro (failure today — host + C runtime)

<?php
$u = getrusage();
var_export(is_array($u));
echo "\n";
var_export(isset($u['ru_utime.tv_sec']));
echo "\n";

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh
PHP_COMPILER_SELFHOST_AOT=1 php bin/compile.php -o /tmp/gr repro.php 2>/dev/null || true
# Native link still pulls phpc_getrusage.o from lib/AOT/runtime/
grep -l __compiler_getrusage lib/AOT/runtime/*.c
'

Check	Today
`lib/AOT/runtime/phpc_getrusage.c` present	yes
`VmProcess::getrusage` uses `\getrusage()`	yes (host PHP)

Scope (this repo)

Layer	Path	Action
VM	`ext/standard/VmProcess.php`	libc `getrusage` via thin FFI/trampoline or compile PHP helper through pipeline
JIT	`ext/standard/JitGetrusage.php`, `lib/JIT/Builtin/StringGetrusage.php`	lower without `__compiler_getrusage` C
Linker	`lib/AOT/Linker.php`	drop `phpc_getrusage.c` from runtime objects
Delete	`lib/AOT/runtime/phpc_getrusage.c`	after PHP path green

PHP-in-PHP: port field mapping from php-src into ext/standard/; keep C only if unavoidable ABI (document in PR).

Done when

phpc_getrusage.c deleted; no __compiler_getrusage symbol in linked AOT binary
getrusage() VM + JIT + AOT match Zend on test/compliance/cases/stdlib/getrusage*.phpt
make bootstrap-selfhost-helloworld / inventory unchanged (no new C logic)
Stdlib: getrusage() — numeric-string who + TypeError parity (ext/standard/basic_functions.c) #4600 repro passes on VM after parity work (can be same PR or follow-up)

Verification

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit --filter getrusage'
./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && ./script/ci-fast.sh --filter getrusage'

Links

Bootstrap host removal: Bootstrap: gethostname() VM path — libc gethostname(2) without host PHP (phpc_gethostname.c) #5022 pattern (gethostname)
North star: Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492

claim: PHP Runtime → PHP — starting this run (#5388 getrusage: delete phpc_getrusage.c, LLVM from StringGetrusage.php).

php-in-php: delete phpc_getrusage.c, LLVM from StringGetrusage (#5388) (

Merged via #6253.

C removed: lib/AOT/runtime/phpc_getrusage.c (78 lines) — unlinked from lib/AOT/Linker.php.

PHP path: lib/JIT/Builtin/StringGetrusage.php now emits LLVM for __compiler_getrusage (libc getrusage(2) + hashtable field mapping), wired via StringGetrusage::ensureLinked() in Type.php. Follows StringGettimeofday pattern; drops JIT-time C bitcode compilation.

Verification:

vendor/bin/phpunit test/unit/JIT/StringGetrusageRuntimeStandaloneTest.php — OK
vendor/bin/phpunit --filter getrusage — VM compliance OK
php bin/vm.php test/repro/getrusage.php → ok
php bin/jit.php test/repro/getrusage.php → ok

Follow-up: VmProcess still delegates to host \getrusage() on VM path; #4600 parity (numeric-string who, TypeError messages) remains open.

php-in-php: VmGetrusageNative libc FFI for VM getrusage() (#5388) (#7858

Merged via #7858.

VM phase: VmGetrusageNative routes VM getrusage() through libc FFI (getrusage(2)) instead of host \getrusage() delegation — same field layout as StringGetrusage JIT/AOT. LLVM lowering now normalizes who=1 → RUSAGE_CHILDREN per php-src microtime.c.

Verification:

php bin/vm.php test/repro/getrusage.php → ok
vendor/bin/phpunit --filter VmGetrusageNativeTest → OK (5 tests)
vendor/bin/phpunit --filter "VMTest::testCases.*getrusage" → OK (5 PHPTs, VM + JIT)
vendor/bin/phpunit --filter GetrusageJITTest → OK

No new C runtime; host fallback only when FFI disabled.

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php-in-php: getrusage() — delete phpc_getrusage.c (~78 lines), native VmProcess without host getrusage() #5388

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php-in-php: getrusage() — delete phpc_getrusage.c (~78 lines), native VmProcess without host getrusage() #5388

Description

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Problem

php-src reference

Repro (failure today — host + C runtime)

Scope (this repo)

Done when

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PurHur commented on Jun 5, 2026

PurHur commented on Jun 5, 2026

PurHur commented on Jun 10, 2026

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