Zig 0.17.0-dev (Split by item)

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__atomic_exchange

atomics.__atomic_exchange

fn __atomic_exchange(size: u32, ptr: [*]u8, val: [*]u8, old: [*]u8, model: i32) callconv(.c) void

File

lib/compiler_rt/atomics.zig:132

Code

fn __atomic_exchange(size: u32, ptr: [*]u8, val: [*]u8, old: [*]u8, model: i32) callconv(.c) void {
    _ = model;
    var sl = spinlocks.get(@intFromPtr(ptr));
    defer sl.release();
    @memcpy(old[0..size], ptr);
    @memcpy(ptr[0..size], val);
}