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curl/lib/config-win32.h
Stefan Eissing 82009c4220
share: concurrency handling, easy updates 
Replace the `volatile int dirty` with a reference counter
protected by a mutex when available.

Solve the problem of when to call application's lock function
by adding a volatile flag that indicates a share has been added
to easy handles in its lifetime. That flag ever goes from
FALSE to TRUE, so volatile might work (in the absence of a mutex).

(The problem is that the lock/unlock functions need 2-3
`curl_share_setopt()` invocations to become usable and there
is no way of telling if the third will ever happen. Calling
the lock function before the 3rd setopt may crash the
application.)

When removing a share from an easy handle (or replacing it with
another share), detach the easy connection on a share with a
connection pool.

When cleaning up a share, allow this even if it is still used in
easy handles. It will be destroyed when the reference count
drops to 0.

Closes #20870
2026-03-21 14:42:49 +01:00

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#ifndef HEADER_CURL_CONFIG_WIN32_H
#define HEADER_CURL_CONFIG_WIN32_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/* ================================================================ */
/* Hand crafted config file for Windows */
/* ================================================================ */
/* ---------------------------------------------------------------- */
/* HEADER FILES */
/* ---------------------------------------------------------------- */
/* Define if you have the <fcntl.h> header file. */
#define HAVE_FCNTL_H 1
/* Define if you have the <io.h> header file. */
#define HAVE_IO_H 1
/* Define if you have the <locale.h> header file. */
#define HAVE_LOCALE_H 1
/* Define to 1 if you have the <stdbool.h> header file. */
#if (defined(_MSC_VER) && (_MSC_VER >= 1800)) || defined(__MINGW32__)
#define HAVE_STDBOOL_H 1
#endif
/* Define if you have the <sys/param.h> header file. */
#ifdef __MINGW32__
#define HAVE_SYS_PARAM_H 1
#endif
/* Define if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define if you have the <sys/utime.h> header file. */
#define HAVE_SYS_UTIME_H 1
/* Define if you have the <unistd.h> header file. */
#ifdef __MINGW32__
#define HAVE_UNISTD_H 1
#endif
/* Define to 1 if you have the <libgen.h> header file. */
#ifdef __MINGW32__
#define HAVE_LIBGEN_H 1
#endif
/* ---------------------------------------------------------------- */
/* OTHER HEADER INFO */
/* ---------------------------------------------------------------- */
/* Define if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Define to 1 if bool is an available type. */
#if (defined(_MSC_VER) && (_MSC_VER >= 1800)) || defined(__MINGW32__)
#define HAVE_BOOL_T 1
#endif
/* ---------------------------------------------------------------- */
/* FUNCTIONS */
/* ---------------------------------------------------------------- */
/* Define if you have the closesocket function. */
#define HAVE_CLOSESOCKET 1
/* Define if you have the ftruncate function. */
#ifdef __MINGW32__
#define HAVE_FTRUNCATE 1
#endif
/* Define to 1 if you have the `getpeername' function. */
#define HAVE_GETPEERNAME 1
/* Define to 1 if you have the getsockname function. */
#define HAVE_GETSOCKNAME 1
/* Define if you have the gethostname function. */
#define HAVE_GETHOSTNAME 1
/* Define if you have the gettimeofday function. */
#ifdef __MINGW32__
#define HAVE_GETTIMEOFDAY 1
#endif
/* Define if you have the ioctlsocket function. */
#define HAVE_IOCTLSOCKET 1
/* Define if you have a working ioctlsocket FIONBIO function. */
#define HAVE_IOCTLSOCKET_FIONBIO 1
/* Define if you have the select function. */
#define HAVE_SELECT 1
/* Define if you have the setlocale function. */
#define HAVE_SETLOCALE 1
/* Define if you have the socket function. */
#define HAVE_SOCKET 1
/* Define if you have the utime function. */
#define HAVE_UTIME 1
/* Define if you have the recv function. */
#define HAVE_RECV 1
/* Define to the type of arg 1 for recv. */
#define RECV_TYPE_ARG1 SOCKET
/* Define to the type of arg 2 for recv. */
#define RECV_TYPE_ARG2 char *
/* Define to the type of arg 3 for recv. */
#define RECV_TYPE_ARG3 int
/* Define to the type of arg 4 for recv. */
#define RECV_TYPE_ARG4 int
/* Define to the function return type for recv. */
#define RECV_TYPE_RETV int
/* Define if you have the send function. */
#define HAVE_SEND 1
/* Define to the type of arg 1 for send. */
#define SEND_TYPE_ARG1 SOCKET
/* Define to the type of arg 2 for send. */
#define SEND_TYPE_ARG2 char *
/* Define to the type of arg 3 for send. */
#define SEND_TYPE_ARG3 int
/* Define to the type of arg 4 for send. */
#define SEND_TYPE_ARG4 int
/* Define to the function return type for send. */
#define SEND_TYPE_RETV int
/* Must always use local implementations on Windows. */
/* Define to 1 if you have an IPv6 capable working inet_ntop function. */
/* #undef HAVE_INET_NTOP */
/* Define to 1 if you have an IPv6 capable working inet_pton function. */
/* #undef HAVE_INET_PTON */
/* Define to 1 if you have the `basename' function. */
#ifdef __MINGW32__
#define HAVE_BASENAME 1
#endif
/* Define to 1 if you have the signal function. */
#define HAVE_SIGNAL 1
/* ---------------------------------------------------------------- */
/* TYPEDEF REPLACEMENTS */
/* ---------------------------------------------------------------- */
/* Define if ssize_t is not an available 'typedefed' type. */
#ifndef _SSIZE_T_DEFINED
# ifdef __MINGW32__
# elif defined(_WIN64)
# define _SSIZE_T_DEFINED
# define ssize_t __int64
# else
# define _SSIZE_T_DEFINED
# define ssize_t int
# endif
#endif
/* ---------------------------------------------------------------- */
/* TYPE SIZES */
/* ---------------------------------------------------------------- */
/* Define to the size of `int', as computed by sizeof. */
#define SIZEOF_INT 4
/* Define to the size of `long', as computed by sizeof. */
#define SIZEOF_LONG 4
/* Define to the size of `size_t', as computed by sizeof. */
#ifdef _WIN64
# define SIZEOF_SIZE_T 8
#else
# define SIZEOF_SIZE_T 4
#endif
/* Define to the size of `curl_off_t', as computed by sizeof. */
#define SIZEOF_CURL_OFF_T 8
/* ---------------------------------------------------------------- */
/* COMPILER SPECIFIC */
/* ---------------------------------------------------------------- */
/* Default to 64-bit time_t unless _USE_32BIT_TIME_T is defined */
#if defined(_MSC_VER) || defined(__MINGW32__)
# ifndef _USE_32BIT_TIME_T
# define SIZEOF_TIME_T 8
# else
# define SIZEOF_TIME_T 4
# endif
#endif
/* Windows XP is required for freeaddrinfo, getaddrinfo */
#define HAVE_FREEADDRINFO 1
#define HAVE_GETADDRINFO 1
#define HAVE_GETADDRINFO_THREADSAFE 1
/* ---------------------------------------------------------------- */
/* STRUCT RELATED */
/* ---------------------------------------------------------------- */
/* Define if you have struct sockaddr_storage. */
#define HAVE_STRUCT_SOCKADDR_STORAGE 1
/* Define if you have struct timeval. */
#define HAVE_STRUCT_TIMEVAL 1
/* Define if struct sockaddr_in6 has the sin6_scope_id member. */
#define HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
/* ---------------------------------------------------------------- */
/* LARGE FILE SUPPORT */
/* ---------------------------------------------------------------- */
/* Number of bits in a file offset, on hosts where this is settable. */
#ifdef __MINGW32__
# undef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 64
#endif
/* Define to the size of `off_t', as computed by sizeof. */
#ifdef __MINGW32__
# define SIZEOF_OFF_T 8
#else
# define SIZEOF_OFF_T 4
#endif
/* ---------------------------------------------------------------- */
/* DNS RESOLVER SPECIALTY */
/* ---------------------------------------------------------------- */
/*
* Undefine both USE_ARES and USE_RESOLV_THREADED for synchronous DNS.
*/
/* Default define to enable threaded asynchronous DNS lookups. */
#if !defined(USE_SYNC_DNS) && !defined(USE_ARES) && \
!defined(USE_RESOLV_THREADED)
# define USE_RESOLV_THREADED 1
#endif
#if defined(USE_ARES) && defined(USE_RESOLV_THREADED)
# error "Only one DNS lookup specialty may be defined at most"
#endif
/* ---------------------------------------------------------------- */
/* LDAP SUPPORT */
/* ---------------------------------------------------------------- */
#ifndef CURL_WINDOWS_UWP
#define HAVE_LDAP_SSL 1
#define USE_WIN32_LDAP 1
/* Define to use the Windows crypto library. */
#define USE_WIN32_CRYPTO
#endif /* CURL_WINDOWS_UWP */
/* Define to use Unix sockets. */
#define USE_UNIX_SOCKETS
/* ---------------------------------------------------------------- */
/* ADDITIONAL DEFINITIONS */
/* ---------------------------------------------------------------- */
/* Define cpu-machine-OS */
#ifndef CURL_OS
# if defined(_M_IX86) || defined(__i386__) /* x86 (MSVC or gcc) */
# define CURL_OS "i386-pc-win32"
# elif defined(_M_X64) || defined(__x86_64__) /* x86_64 (VS2005+ or gcc) */
# define CURL_OS "x86_64-pc-win32"
# elif defined(_M_IA64) || defined(__ia64__) /* Itanium */
# define CURL_OS "ia64-pc-win32"
# elif defined(_M_ARM_NT) || defined(__arm__) /* ARMv7-Thumb2 */
# define CURL_OS "thumbv7a-pc-win32"
# elif defined(_M_ARM64) || defined(__aarch64__) /* ARM64 (Windows 10) */
# define CURL_OS "aarch64-pc-win32"
# else
# define CURL_OS "unknown-pc-win32"
# endif
#endif /* !CURL_OS */
#endif /* HEADER_CURL_CONFIG_WIN32_H */
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