Code analysis violations Bug in scheduler - race during with worker thread shutdown.
Showing the changes to src/vm/sys/file_system.cpp (1 of 18 files). Show all
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| 1 | +// | |
| 2 | +// Dis VM | |
| 3 | +// File: file_system.cpp | |
| 4 | +// Author: arr | |
| 5 | +// | |
| 6 | + | |
| 7 | +#include <iostream> | |
| 8 | +#include <fstream> | |
| 9 | +#include <mutex> | |
| 10 | +#include <utils.h> | |
| 11 | +#include "sys_utils.h" | |
| 12 | + | |
| 13 | +using namespace disvm::runtime; | |
| 14 | + | |
| 15 | +namespace | |
| 16 | +{ | |
| 17 | + std::mutex _create_file_stream_mutex; | |
| 18 | +} | |
| 19 | + | |
| 20 | +std::unique_ptr<std::fstream> disvm::runtime::sys::create_file_stream(const char *path, std::ios::openmode mode, cfs_flags_t flags) | |
| 21 | +{ | |
| 22 | + auto file = std::unique_ptr<std::fstream>{}; | |
| 23 | + if (flags == cfs_flags_t::none) | |
| 24 | + { | |
| 25 | + file = std::make_unique<std::fstream>(path, mode); | |
| 26 | + } | |
| 27 | + else | |
| 28 | + { | |
| 29 | + std::unique_lock<std::mutex> lock{ _create_file_stream_mutex, std::defer_lock }; | |
| 30 | + if (util::has_flag(flags, cfs_flags_t::atomic)) | |
| 31 | + lock.lock(); | |
| 32 | + | |
| 33 | + if (util::has_flag(flags, cfs_flags_t::ensure_create)) | |
| 34 | + { | |
| 35 | + std::fstream file_exists{ path }; | |
| 36 | + if (file_exists) | |
| 37 | + return{}; | |
| 38 | + } | |
| 39 | + | |
| 40 | + file = std::make_unique<std::fstream>(path, mode); | |
| 41 | + } | |
| 42 | + | |
| 43 | + // Return null if file stream is not open. | |
| 44 | + if (!file->is_open()) | |
| 45 | + return{}; | |
| 46 | + | |
| 47 | + return file; | |
| 48 | +} | |