Bug #13438 » 0001-Remove-overriding-of-HEAP_PAGE_ALIGN_LOG.patch
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AC_DEFINE_UNQUOTED(STACK_END_ADDRESS, $rb_cv_stack_end_address)
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fi
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# posix_memalign(memptr, alignment, size) implemented for OpenBSD 4.8 doesn't work if alignment > MALLOC_PAGESIZE.
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# [ruby-core:42158] https://bugs.ruby-lang.org/issues/5901
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# OpenBSD 5.2 fixed the problem. (src/lib/libc/stdlib/malloc.c:1.142)
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# MirOS #10semel has the problem but fixed in the repository. (src/lib/libc/stdlib/malloc.c:1.9)
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AS_CASE(["$target_os"],
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[openbsd*|mirbsd*], [
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AC_CACHE_CHECK(for heap align log on openbsd, rb_cv_page_size_log,
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[rb_cv_page_size_log=no
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for page_log in 12 13; do
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AC_TRY_RUN([
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#include <math.h>
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#include <unistd.h>
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int
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main() {
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if ((int)log2((double)sysconf(_SC_PAGESIZE)) != $page_log) return 1;
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return 0;
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}
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],
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rb_cv_page_size_log="$page_log"; break)
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done])
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if test $rb_cv_page_size_log != no; then
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AC_DEFINE_UNQUOTED(HEAP_ALIGN_LOG, $rb_cv_page_size_log)
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else
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AC_DEFINE_UNQUOTED(HEAP_ALIGN_LOG, 12)
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fi
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])
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dnl Checks for library functions.
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AC_TYPE_GETGROUPS
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AC_TYPE_SIGNAL
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| gc.c | ||
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} rb_objspace_t;
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#ifndef HEAP_PAGE_ALIGN_LOG
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/* default tiny heap size: 16KB */
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#define HEAP_PAGE_ALIGN_LOG 14
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#endif
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#define CEILDIV(i, mod) (((i) + (mod) - 1)/(mod))
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enum {
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HEAP_PAGE_ALIGN = (1UL << HEAP_PAGE_ALIGN_LOG),
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