mirror of
https://github.com/matrix-construct/construct
synced 2024-08-22 01:24:53 +02:00
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
// IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_UTIL_REENTRANCE_H
|
|
|
|
namespace ircd::util
|
|
{
|
|
template<bool &entered> struct reentrance_assertion;
|
|
}
|
|
|
|
/// Simple assert for reentrancy; useful when static variables are in play.
|
|
/// You have to place `entered` and give it the proper linkage you want.
|
|
template<bool &entered>
|
|
struct ircd::util::reentrance_assertion
|
|
{
|
|
reentrance_assertion()
|
|
{
|
|
assert(!entered);
|
|
entered = true;
|
|
}
|
|
|
|
~reentrance_assertion()
|
|
{
|
|
assert(entered);
|
|
entered = false;
|
|
}
|
|
};
|