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default 64 KiB stack on all systems

master
Daniel Kolesa 2017-03-20 00:50:57 +01:00
parent 5e2891c806
commit 0d815e3610
1 changed files with 11 additions and 6 deletions
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17
src/context_stack.cc
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@ -125,28 +125,33 @@ size_t stack_traits::page_size() noexcept {
size_t stack_traits::minimum_size() noexcept {
#if defined(OSTD_PLATFORM_WIN32)
/* no func on windows, sane default */
return sizeof(void *) * 1024;
/* no func on windows, sane default of 8 KiB */
return 8 * 1024;
#elif defined(OSTD_PLATFORM_POSIX)
/* typically 8 KiB but can be much larger on some platforms */
return SIGSTKSZ;
#endif
}
size_t stack_traits::maximum_size() noexcept {
#if defined(OSTD_PLATFORM_WIN32)
/* no func on windows either */
/* value is technically undefined when is_unbounded() is
* true, just default to 1 GiB so we actually return something
*/
return 1024 * 1024 * 1024;
#elif defined(OSTD_PLATFORM_POSIX)
/* can be RLIM_INFINITY, but that's ok, see above */
return size_t(detail::ctx_rlimit().rlim_max);
#endif
}
size_t stack_traits::default_size() noexcept {
#if defined(OSTD_PLATFORM_WIN32)
/* no func on windows either */
return sizeof(void *) * minimum_size();
/* no func on windows either, default to 64 KiB */
return 8 * 8 * 1024;
#elif defined(OSTD_PLATFORM_POSIX)
size_t r = sizeof(void *) * minimum_size();
/* default to at least 64 KiB (see minimum_size comment) */
constexpr size_t r = std::max(8 * 8 * 1024, SIGSTKSZ);
if (is_unbounded()) {
return r;
}