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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "CryptThreading.h"
#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
#include "threads/Thread.h"
#include "utils/log.h"
#include <atomic>
namespace
{
CCriticalSection* getlock(int index)
{
return g_cryptThreadingInitializer.GetLock(index);
}
void lock_callback(int mode, int type, const char* file, int line)
{
if (mode & CRYPTO_LOCK)
getlock(type)->lock();
else
getlock(type)->unlock();
}
unsigned long GetCryptThreadId()
{
static std::atomic<unsigned long> tidSequence{0};
static thread_local unsigned long tidTl{0};
if (tidTl == 0)
tidTl = ++tidSequence;
return tidTl;
}
void thread_id(CRYPTO_THREADID* tid)
{
// C-style cast required due to vastly differing native ID return types
CRYPTO_THREADID_set_numeric(tid, GetCryptThreadId());
}
}
CryptThreadingInitializer::CryptThreadingInitializer()
{
// OpenSSL < 1.1 needs integration code to support multi-threading
// This is absolutely required for libcurl if it uses the OpenSSL backend
m_locks.resize(CRYPTO_num_locks());
CRYPTO_THREADID_set_callback(thread_id);
CRYPTO_set_locking_callback(lock_callback);
}
CryptThreadingInitializer::~CryptThreadingInitializer()
{
CSingleLock l(m_locksLock);
CRYPTO_set_locking_callback(nullptr);
m_locks.clear();
}
CCriticalSection* CryptThreadingInitializer::GetLock(int index)
{
CSingleLock l(m_locksLock);
auto& curlock = m_locks[index];
if (!curlock)
{
curlock.reset(new CCriticalSection());
}
return curlock.get();
}
unsigned long CryptThreadingInitializer::GetCurrentCryptThreadId()
{
return GetCryptThreadId();
}
#endif
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