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no more annoying warnings, just enable THB

v1
Brett 2024-03-06 23:52:43 -05:00
parent 06892a3418
commit bfb7b04ce5
1 changed files with 16 additions and 9 deletions
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9
include/blt/std/allocator.h
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@ -539,7 +539,7 @@ namespace blt
} }
}; };
template<blt::size_t BLOCK_SIZE = 4096 * 512, bool USE_HUGE = true, blt::size_t HUGE_PAGE_SIZE = 4096 * 512> template<blt::size_t BLOCK_SIZE = 4096 * 512, bool USE_HUGE = true, blt::size_t HUGE_PAGE_SIZE = 4096 * 512, bool WARN_ON_FAIL = false>
class bump_allocator2 class bump_allocator2
{ {
// power of two // power of two
@ -633,11 +633,14 @@ namespace blt
buffer = static_cast<block*>(mmap(nullptr, BLOCK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0)); buffer = static_cast<block*>(mmap(nullptr, BLOCK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0));
// if we fail to allocate a huge page we can try to allocate normally // if we fail to allocate a huge page we can try to allocate normally
if (buffer == MAP_FAILED) if (buffer == MAP_FAILED)
{
if constexpr (WARN_ON_FAIL)
{ {
BLT_WARN_STREAM << "We failed to allocate huge pages\n"; BLT_WARN_STREAM << "We failed to allocate huge pages\n";
handle_mmap_error(BLT_WARN_STREAM); handle_mmap_error(BLT_WARN_STREAM);
BLT_WARN_STREAM << "\033[1;31mYou should attempt to enable " BLT_WARN_STREAM << "\033[1;31mYou should attempt to enable "
"huge pages as this will allocate normal pages and double the memory usage!\033[22m\n"; "huge pages as this will allocate normal pages and double the memory usage!\033[22m\n";
}
blt::size_t bytes = BLOCK_SIZE * 2; blt::size_t bytes = BLOCK_SIZE * 2;
buffer = static_cast<block*>(mmap(nullptr, bytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)); buffer = static_cast<block*>(mmap(nullptr, bytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
if (buffer == MAP_FAILED) if (buffer == MAP_FAILED)
@ -646,11 +649,15 @@ namespace blt
handle_mmap_error(BLT_ERROR_STREAM); handle_mmap_error(BLT_ERROR_STREAM);
throw std::bad_alloc(); throw std::bad_alloc();
} }
if constexpr (WARN_ON_FAIL)
{
if (((size_t) buffer & (HUGE_PAGE_SIZE - 1)) != 0) if (((size_t) buffer & (HUGE_PAGE_SIZE - 1)) != 0)
BLT_ERROR("Pointer is not aligned! %p", buffer); BLT_ERROR("Pointer is not aligned! %p", buffer);
}
auto* ptr = static_cast<void*>(buffer); auto* ptr = static_cast<void*>(buffer);
auto ptr_size = reinterpret_cast<blt::size_t>(ptr); auto ptr_size = reinterpret_cast<blt::size_t>(ptr);
buffer = static_cast<block*>(std::align(BLOCK_SIZE, BLOCK_SIZE, ptr, bytes)); buffer = static_cast<block*>(std::align(BLOCK_SIZE, BLOCK_SIZE, ptr, bytes));
if constexpr (WARN_ON_FAIL)
BLT_ERROR("Offset by %ld pages, resulting: %p", (reinterpret_cast<blt::size_t>(buffer) - ptr_size) / 4096, buffer); BLT_ERROR("Offset by %ld pages, resulting: %p", (reinterpret_cast<blt::size_t>(buffer) - ptr_size) / 4096, buffer);
} }
} else } else