//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#include "pxr/base/tf/expiryNotifier.h"
#include "pxr/base/tf/diagnostic.h"

void (*Tf_ExpiryNotifier::_func)(void const *) = 0;
void (*Tf_ExpiryNotifier::_func2)(void const *) = 0;

void Tf_ExpiryNotifier::Invoke(void const *p)
{
    if (_func)
        _func(p);
}

void Tf_ExpiryNotifier::SetNotifier(void (*func)(void const *))
{
    if (func && _func)
        TF_FATAL_ERROR("cannot override already installed notification "
                       "function");
    _func = func;
}

void Tf_ExpiryNotifier::Invoke2(void const *p)
{
    if (_func2)
        _func2(p);
}

void Tf_ExpiryNotifier::SetNotifier2(void (*func)(void const *))
{
    if (func && _func2)
        TF_FATAL_ERROR("cannot override already installed notification(2) "
                       "function");
    _func2 = func;
}

