diff options
Diffstat (limited to 'std')
| -rw-r--r-- | std/heap.zig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/std/heap.zig b/std/heap.zig index e8bf02a2a8..8e3cccc365 100644 --- a/std/heap.zig +++ b/std/heap.zig @@ -280,7 +280,8 @@ pub const HeapAllocator = switch (builtin.os) { const amt = n + alignment + @sizeOf(usize); const optional_heap_handle = @atomicLoad(?HeapHandle, &self.heap_handle, builtin.AtomicOrder.SeqCst); const heap_handle = optional_heap_handle orelse blk: { - const hh = os.windows.HeapCreate(0, amt, 0) orelse return error.OutOfMemory; + const options = if (builtin.single_threaded) os.windows.HEAP_NO_SERIALIZE else 0; + const hh = os.windows.HeapCreate(options, amt, 0) orelse return error.OutOfMemory; const other_hh = @cmpxchgStrong(?HeapHandle, &self.heap_handle, null, hh, builtin.AtomicOrder.SeqCst, builtin.AtomicOrder.SeqCst) orelse break :blk hh; _ = os.windows.HeapDestroy(hh); break :blk other_hh.?; // can't be null because of the cmpxchg |