Next (#1197)

* Refactor memory unmapping functions to improve error handling

- Renamed `sys_munmap` to `sys_munmap_nothrow` to indicate it does not throw errors.
- Updated calls to `sys_munmap` in `posix_file_loader.h` to use the new `sys_munmap_nothrow` function for safer memory management.

* Enhance algorithm and memory management interfaces

- Changed `uninitialized_fill_n` to return `ForwardIt` instead of void for better usability.
- Updated `close` and destructor in `posix_memory_map_file` to be `constexpr` for improved compile-time evaluation.
- Added new environment string functions in Win32 API for better compatibility.
- Standardized `#pragma once` across multiple thread header files for consistency.

Author: MacroModel

include/fast_io_core_impl/freestanding/algorithm.h

@@ -768,10 +768,10 @@ inline constexpr ForwardIt uninitialized_fill(ForwardIt first, ForwardIt last, T
 }
 
 template <::std::input_iterator ForwardIt, typename T>
-inline constexpr void uninitialized_fill_n(ForwardIt first, ::std::size_t n, T const &x) noexcept(
+inline constexpr ForwardIt uninitialized_fill_n(ForwardIt first, ::std::size_t n, T const &x) noexcept(
 	::std::is_nothrow_copy_constructible_v<typename ::std::iterator_traits<ForwardIt>::value_type>)
 {
-	::fast_io::freestanding::uninitialized_fill(first, ::std::next(first, n), x);
+	return ::fast_io::freestanding::uninitialized_fill(first, ::std::next(first, n), x);
 }
 
 template <::std::forward_iterator ForwardIt>

include/fast_io_hosted/platforms/posix_mapping.h

@@ -291,7 +291,7 @@ class posix_memory_map_file
 	{
 		return address_begin[pos];
 	}
-	inline void close()
+	inline constexpr void close()
 	{
 		if (this->address_begin != MAP_FAILED) [[likely]]
 		{
@@ -300,7 +300,7 @@ class posix_memory_map_file
 			system_call_throw_error(ret);
 		}
 	}
-	inline ~posix_memory_map_file()
+	inline constexpr ~posix_memory_map_file()
 	{
 		if (this->address_begin != MAP_FAILED) [[likely]]
 		{

include/fast_io_hosted/platforms/win32/apis.h

@@ -170,5 +170,8 @@ FAST_IO_DLLIMPORT int FAST_IO_WINSTDCALL PrefetchVirtualMemory(void *, ::std::si
 FAST_IO_DLLIMPORT int FAST_IO_WINSTDCALL SetConsoleTextAttribute(void *, ::std::int_least32_t) noexcept FAST_IO_WINSTDCALL_RENAME(SetConsoleTextAttribute, 8);
 FAST_IO_DLLIMPORT ::std::uint_least32_t FAST_IO_WINSTDCALL GetCurrentThreadId() noexcept FAST_IO_WINSTDCALL_RENAME(GetCurrentThreadId, 0);
 FAST_IO_DLLIMPORT void FAST_IO_WINSTDCALL Sleep(::std::uint_least32_t) noexcept FAST_IO_WINSTDCALL_RENAME(Sleep, 4);
-
+FAST_IO_DLLIMPORT char16_t *FAST_IO_WINSTDCALL GetEnvironmentStringsW() noexcept FAST_IO_WINSTDCALL_RENAME(GetEnvironmentStringsW, 0);
+FAST_IO_DLLIMPORT char *FAST_IO_WINSTDCALL GetEnvironmentStringsA() noexcept FAST_IO_WINSTDCALL_RENAME(GetEnvironmentStringsA, 0);
+FAST_IO_DLLIMPORT int FAST_IO_WINSTDCALL FreeEnvironmentStringsW(char16_t*) noexcept FAST_IO_WINSTDCALL_RENAME(FreeEnvironmentStringsW, 4);
+FAST_IO_DLLIMPORT int FAST_IO_WINSTDCALL FreeEnvironmentStringsA(char*) noexcept FAST_IO_WINSTDCALL_RENAME(FreeEnvironmentStringsA, 4);
 } // namespace fast_io::win32

include/fast_io_hosted/threads/thread/c_malloc_guard.h

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 namespace fast_io::details
 {

include/fast_io_hosted/threads/thread/impl.h

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #if (defined(_WIN32) && !defined(__WINE__)) && !defined(__CYGWIN__)
 #ifdef _WIN32_WINDOWS

include/fast_io_hosted/threads/thread/nt.h

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include <chrono>
 #include <ranges>

include/fast_io_hosted/threads/thread/posix.h

@@ -1 +1 @@
-#pragma once
+#pragma once

include/fast_io_hosted/threads/thread/win32.h

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include <chrono>
 #include <ranges>