diff options
Diffstat (limited to 'arch/x86_64/src/memory/heap')
| -rw-r--r-- | arch/x86_64/src/memory/heap/bump_allocator.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86_64/src/memory/heap/bump_allocator.cpp b/arch/x86_64/src/memory/heap/bump_allocator.cpp index 19ced47..8807645 100644 --- a/arch/x86_64/src/memory/heap/bump_allocator.cpp +++ b/arch/x86_64/src/memory/heap/bump_allocator.cpp @@ -32,8 +32,9 @@ namespace teachos::arch::memory::heap auto const alloc_end = saturating_add(alloc_start, size); arch::exception_handling::assert(alloc_end <= heap_end, "[Heap Allocator] Out of memory"); // Check if the atomic value is still the one initally loaded, if it isn't we have been overtaken by another - // thread and need to redo the calculation. - auto const updated = next.compare_exchange_strong(alloc_start, alloc_end, std::memory_order::relaxed); + // thread and need to redo the calculation. Spurious failure by weak can be ignored, because the whole allocation + // is wrapped in an infinite for loop so a failure that wasn't actually one will simply be retried until it works. + auto const updated = next.compare_exchange_weak(alloc_start, alloc_end, std::memory_order::relaxed); if (updated) { return reinterpret_cast<void *>(alloc_start); |