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Use unprotected heap when in single_threaded mode.

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Sahnvour 2019-05-08 18:14:35 +02:00
parent a2d5b0fabe
commit cd537f822b
1 changed files with 2 additions and 1 deletions
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3
std/heap.zig
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@ -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