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#ifndef LOCK_HOLDER_H_489572039485723453425
#define LOCK_HOLDER_H_489572039485723453425
//#include <zen/stl_tools.h>
//#include <zen/file_path.h>
#include "dir_lock.h"
#include "process_callback.h"
namespace fff
{
//Attention: 1. call after having checked directory existence!
// 2. perf: remove folder aliases (e.g. case differences) *before* calling this function!!!
//hold locks for a number of directories without blocking during lock creation
class LockHolder
{
public:
LockHolder(const std::set<Zstring>& folderPaths, bool& warnDirectoryLockFailed, PhaseCallback& pcb /*throw X*/)
{
using namespace zen;
std::vector<std::pair<Zstring, FileError>> failedLocks;
for (const Zstring& folderPath : folderPaths)
try
{
//lock file creation is synchronous and may block noticeably for slow devices (USB sticks, mapped cloud storage)
lockHolder_.emplace_back(folderPath,
[&](std::wstring&& msg) { pcb.updateStatus(std::move(msg)); /*throw X*/ },
UI_UPDATE_INTERVAL / 2); //throw FileError
}
catch (const FileError& e) { failedLocks.emplace_back(folderPath, e); }
if (!failedLocks.empty())
{
std::wstring msg = _("Cannot set directory locks for the following folders:");
for (const auto& [folderPath, error] : failedLocks)
{
msg += L"\n\n";
//msg += fmtPath(folderPath) + L'\n' -> seems redundant
msg += replaceCpy(error.toString(), L"\n\n", L'\n');
}
pcb.reportWarning(msg, warnDirectoryLockFailed); //throw X
}
}
private:
std::vector<DirLock> lockHolder_;
};
}
#endif //LOCK_HOLDER_H_489572039485723453425
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