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/*
* Copyright (c) 2026, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
* freely licensable by each licensor hereunder covering either (i) the
* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef PYTHON_LIBPOSIX_ERRNO_CAPTURE_H
#define PYTHON_LIBPOSIX_ERRNO_CAPTURE_H
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#define THREAD_LOCAL _Thread_local
#elif defined(_MSC_VER)
#define THREAD_LOCAL __declspec(thread)
#elif defined(__GNUC__) || defined(__clang__)
#define THREAD_LOCAL __thread
#else
#error "No thread-local storage support for this compiler"
#endif
extern THREAD_LOCAL int errno_capture;
#ifdef _WIN32
extern THREAD_LOCAL int winerror_capture;
extern THREAD_LOCAL int wsaerror_capture;
extern THREAD_LOCAL int error_source_capture;
#endif
enum error_capture_source {
ERROR_CAPTURE_ERRNO = 0,
ERROR_CAPTURE_WINAPI = 1,
ERROR_CAPTURE_WINSOCK = 2,
};
static inline void capture_errors(void) {
errno_capture = errno;
#ifdef _WIN32
winerror_capture = (int) GetLastError();
wsaerror_capture = WSAGetLastError();
error_source_capture = ERROR_CAPTURE_ERRNO;
#endif
}
/* Temporary compatibility alias while existing wrappers migrate to the plural API. */
#define capture_errno capture_errors
#define CAPTURE_ERRNO_AND_RETURN(indicator, expr) do { \
__typeof__(expr) return_value = (expr); \
if (return_value == (indicator)) { \
capture_errno(); \
} \
return return_value; \
} while (0)
#endif //PYTHON_LIBPOSIX_ERRNO_CAPTURE_H