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add environment option to reserve huge pages upfront

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This commit is contained in:
daan 2019-08-19 14:14:50 -07:00
parent 741f37e1f0
commit 0e639addb0
4 changed files with 10 additions and 1 deletions
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3
src/os.c
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@ -108,7 +108,7 @@ void _mi_os_init(void) {
}
// Try to see if large OS pages are supported
unsigned long err = 0;
bool ok = mi_option_is_enabled(mi_option_large_os_pages);
bool ok = mi_option_is_enabled(mi_option_large_os_pages) || mi_option_is_enabled(mi_option_reserve_huge_os_pages);
if (ok) {
// To use large pages on Windows, we first need access permission
// Set "Lock pages in memory" permission in the group policy editor
@ -788,6 +788,7 @@ int mi_reserve_huge_os_pages( size_t pages, double max_secs ) mi_attr_noexcept
if (estimate > 1.5*max_secs) return (-1); // seems like we are going to timeout
}
}
_mi_verbose_message("reserved %zu huge pages\n", pages);
return 0;
}
#endif