huntedbytheirs
180c1107b6
Establish the repository layout per Vox guidelines (layouts/C.md, building/C.md): Autotools build (GCC-only, C23), five compatibility profiles (--enable-onlyposix/--enable-muslmimic/--enable-muslext/ --enable-spoof, default vlibc), alongside/overwrite install methods, vlibc-gcc/vlibc-clang drivers, static-linking requirement (except spoof), benchmark harness, and tooling (.clang-format/.clang-tidy/ .clangd + compile_commands.json).
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* Benchmark harness for vlibc (musts/BENCHMARKING.md).
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*
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* Every vlibc component is benchmarked against the software it replaces.
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* This stub times vlibc_version() and is the skeleton that per-component
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* benchmarks build on. Reconfigure with --with-libc=musl or --with-libc=glibc
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* to link the same harness against a reference libc for comparison.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <vlibc.h>
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#include <stdio.h>
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#include <time.h>
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#define ITERATIONS 100000000ULL
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int
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main(void)
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{
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volatile const char *version = NULL;
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struct timespec start;
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struct timespec end;
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double whole;
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double frac;
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double seconds;
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if (clock_gettime(CLOCK_MONOTONIC, &start) != 0)
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{
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return 1;
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}
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for (unsigned long long i = 0; i < ITERATIONS; i++)
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{
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version = vlibc_version();
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}
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if (clock_gettime(CLOCK_MONOTONIC, &end) != 0)
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{
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return 1;
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}
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whole = (double)(end.tv_sec - start.tv_sec);
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frac = (double)(end.tv_nsec - start.tv_nsec) / 1000000000.0;
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seconds = whole + frac;
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printf("vlibc_version() x %llu: %.3f s (%.2f ns/call), version=%s\n", ITERATIONS, seconds,
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seconds * 1000000000.0 / ITERATIONS, (const char *)version);
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return 0;
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}
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