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Atomic PARAM.SFO writes

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Eladash 2021-02-21 21:55:07 +02:00 • committed by Ivan
parent 0878db4e17
commit 932f31e37b
9 changed files with 108 additions and 11 deletions
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54
Utilities/File.cpp
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@ -18,6 +18,11 @@ using namespace std::literals::string_literals;
#include <cwchar>
#include <Windows.h>
namespace utils
{
u64 get_unique_tsc();
}
static std::unique_ptr<wchar_t[]> to_wchar(const std::string& source)
{
// String size + null terminator
@ -1915,6 +1920,55 @@ fs::file fs::make_gather(std::vector<fs::file> files)
return result;
}
fs::pending_file::pending_file(const std::string& path)
{
do
{
m_path = fmt::format(u8"%s/＄%s.%s.tmp", get_parent_dir(path), std::string_view(path).substr(path.find_last_of(fs::delim) + 1), fmt::base57(utils::get_unique_tsc()));
if (file.open(m_path, fs::create + fs::write + fs::read + fs::excl))
{
m_dest = path;
break;
}
m_path.clear();
}
while (fs::g_tls_error == fs::error::exist); // Only retry if failed due to existing file
}
fs::pending_file::~pending_file()
{
file.close();
if (!m_path.empty())
{
fs::remove_file(m_path);
}
}
bool fs::pending_file::commit(bool overwrite)
{
if (!file || m_path.empty())
{
fs::g_tls_error = fs::error::noent;
return false;
}
// The temporary file's contents must be on disk before rename
file.sync();
file.close();
if (fs::rename(m_path, m_dest, overwrite))
{
// Disable the destructor
m_path.clear();
return true;
}
return false;
}
template<>
void fmt_class_string<fs::seek_mode>::format(std::string& out, u64 arg)
{