std::filesystem::create_directory(path)
Thread safety:
std::filesystem::create_directory(path);under the hood it issues a single POSIX mkdir() (or the platform equivalent).- If the directory doesn’t exist, one thread’s call will succeed and return true;
- Any concurrent or subsequent calls will see that the directory already exists and return false
- Below is a TOCTOU (Time Of Check To Time Of Use) race:
1
2
3
if (!std::filesystem::exists(path)) {
std::filesystem::create_directory(path);
}
