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This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig standard library. Private Function

allocInner

Doc Source

Private Function

std.heap.SafeAllocator.FuzzMultiThreadedAllocator.allocInner

fn allocInner(f: *FuzzMultiThreadedAllocator, len: usize, alignment: Alignment) ?[*]u8

Params

f: *FuzzMultiThreadedAllocator
len: usize
alignment: Alignment

File

heap/SafeAllocator.zig:1918

    fn allocInner(f: *FuzzMultiThreadedAllocator, len: usize, alignment: Alignment) ?[*]u8 {
        var prev_fill = @atomicLoad(usize, &f.fill, .monotonic);
        var start: usize = undefined;
        while (true) {
            const start_addr = alignment.forward(@intFromPtr(f.buf[prev_fill..].ptr));
            start = @as([*]u8, @ptrFromInt(start_addr)) - f.buf.ptr;
            if (start +| len > f.buf.len or f.maybeFail()) return null;
            prev_fill = @cmpxchgStrong(
                usize,
                &f.fill,
                prev_fill,
                start + len,
                .monotonic,
                .monotonic,
            ) orelse {
                @branchHint(.likely);
                break;
            };
        }
        return f.buf[start..][0..len].ptr;
    }