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/*
* Copyright (C) 2008-2017 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``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
* FOUNDATION OR CONTRIBUTORS 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.
*/
#include "Init.hxx"
#include "Global.hxx"
#include "event/Call.hxx"
#include "thread/Mutex.hxx"
#include <atomic>
#include <assert.h>
Mutex CurlInit::mutex;
unsigned CurlInit::ref;
CurlGlobal *CurlInit::instance;
CurlInit::CurlInit(EventLoop &event_loop)
{
const std::lock_guard<Mutex> protect(mutex);
if (++ref > 1) {
assert(&event_loop == &instance->GetEventLoop());
return;
}
CURLcode code = curl_global_init(CURL_GLOBAL_ALL);
if (code != CURLE_OK)
throw std::runtime_error(curl_easy_strerror(code));
assert(instance == nullptr);
instance = new CurlGlobal(event_loop);
}
CurlInit::~CurlInit() noexcept
{
const std::lock_guard<Mutex> protect(mutex);
if (--ref > 0)
return;
BlockingCall(instance->GetEventLoop(), [](){
delete instance;
instance = nullptr;
});
curl_global_cleanup();
}
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