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Fixed ensure_init detection

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This commit is contained in:
Istvan Haller
2021-08-25 14:38:58 +01:00
parent e8cc3af6e5
commit 3ceef40861
1 changed files with 15 additions and 5 deletions
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20
src/mem/pool.h
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@@ -49,17 +49,27 @@ namespace snmalloc
* SFINAE helper. Matched only if `T` implements `ensure_init`. Calls it
* if it exists.
*/
SNMALLOC_FAST_PATH static auto call_ensure_init(SharedStateHandle*, int)
-> decltype(SharedStateHandle::ensure_init())
template<typename SharedStateHandle_>
SNMALLOC_FAST_PATH static auto call_ensure_init(SharedStateHandle_*, int)
-> decltype(SharedStateHandle_::ensure_init())
{
SharedStateHandle::ensure_init();
static_assert(
std::is_same<SharedStateHandle, SharedStateHandle_>::value,
"SFINAE parameter, should only be used with SharedStateHandle");
SharedStateHandle_::ensure_init();
}
/**
* SFINAE helper. Matched only if `T` does not implement `ensure_init`.
* Does nothing if called.
*/
SNMALLOC_FAST_PATH static auto call_ensure_init(SharedStateHandle*, long) {}
template<typename SharedStateHandle_>
SNMALLOC_FAST_PATH static auto call_ensure_init(SharedStateHandle_*, long)
{
static_assert(
std::is_same<SharedStateHandle, SharedStateHandle_>::value,
"SFINAE parameter, should only be used with SharedStateHandle");
}
/**
* Call `SharedStateHandle::ensure_init()` if it is implemented, do nothing
@@ -67,7 +77,7 @@ namespace snmalloc
*/
SNMALLOC_FAST_PATH static void ensure_init()
{
call_ensure_init(nullptr, 0);
call_ensure_init<SharedStateHandle>(nullptr, 0);
}
static void make_pool(PoolState<T>*) noexcept