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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UTIL_SYSTEM_H
#define BITCOIN_UTIL_SYSTEM_H
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <compat/assumptions.h>
#include <compat/compat.h>
#include <any>
#include <set>
#include <stdint.h>
#include <string>
// Application startup time (used for uptime calculation)
int64_t GetStartupTime();
void SetupEnvironment();
bool SetupNetworking();
#ifndef WIN32
std::string ShellEscape(const std::string& arg);
#endif
#if HAVE_SYSTEM
void runCommand(const std::string& strCommand);
#endif
/**
* Return the number of cores available on the current system.
* @note This does count virtual cores, such as those provided by HyperThreading.
*/
int GetNumCores();
/**
* On platforms that support it, tell the kernel the calling thread is
* CPU-intensive and non-interactive. See SCHED_BATCH in sched(7) for details.
*
*/
void ScheduleBatchPriority();
namespace util {
//! Simplification of std insertion
template <typename Tdst, typename Tsrc>
inline void insert(Tdst& dst, const Tsrc& src) {
dst.insert(dst.begin(), src.begin(), src.end());
}
template <typename TsetT, typename Tsrc>
inline void insert(std::set<TsetT>& dst, const Tsrc& src) {
dst.insert(src.begin(), src.end());
}
/**
* Helper function to access the contained object of a std::any instance.
* Returns a pointer to the object if passed instance has a value and the type
* matches, nullptr otherwise.
*/
template<typename T>
T* AnyPtr(const std::any& any) noexcept
{
T* const* ptr = std::any_cast<T*>(&any);
return ptr ? *ptr : nullptr;
}
} // namespace util
#endif // BITCOIN_UTIL_SYSTEM_H
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