From: Corinna Vinschen <vinschen@redhat.com>
To: Bruno Haible <bruno@clisp.org>
Cc: bug-gnulib@gnu.org
Subject: Re: [PATCH] Do not decorate symbols as dllexport on Cygwin
Date: Mon, 6 Feb 2023 21:04:24 +0100 [thread overview]
Message-ID: <Y+FdSEWvWz8VgYhv@calimero.vinschen.de> (raw)
In-Reply-To: <3384697.1Xququ8Bcc@nimes>
On Feb 6 18:37, Bruno Haible wrote:
> Corinna Vinschen wrote:
> > This patch will be in the next Cygwin release 3.4.6.
>
> Thanks!
>
> > I'm just a bit fuzzy what patches will be required for gnulib now...
>
> With this patch, the setlocale_null lock should be gone in Cygwin >= 3.4.6.
> I can't really test it, but I hope the patch is correct.
I just ran the setlocale_null-mt-* tests with gnulib from git master
under Cygwin with my newlib patch, and the tests succeeded. I checked
that configure is doing the right thing and config.h contains the right
settings:
$ ./configure
[...]
checking whether setlocale (LC_ALL, NULL) is multithread-safe... yes
checking whether setlocale (category, NULL) is multithread-safe... yes
[...]
$ grep SETLOCALE_NULL config.h
#define GNULIB_TEST_SETLOCALE_NULL 1
#define SETLOCALE_NULL_ALL_MTSAFE 1
#define SETLOCALE_NULL_ONE_MTSAFE 1
$ grep SETLOCALE_NULL gltests/config.h
#define GNULIB_TEST_SETLOCALE_NULL 1
#define SETLOCALE_NULL_ALL_MTSAFE 1
#define SETLOCALE_NULL_ONE_MTSAFE 1
Thanks a lot,
Corinna
>
>
> 2023-02-06 Bruno Haible <bruno@clisp.org>
>
> setlocale-null: Don't use a lock in Cygwin >= 3.4.6.
> Road paved by Corinna Vinschen <vinschen@redhat.com>.
> * m4/setlocale_null.m4 (gl_FUNC_SETLOCALE_NULL): Assume that
> setlocale (LC_ALL, NULL) is multithread-safe in Cygwin >= 3.4.6.
> * lib/setlocale_null.c: Update comments.
> * tests/test-setlocale_null-mt-all.c: Likewise.
>
> diff --git a/lib/setlocale_null.c b/lib/setlocale_null.c
> index 6ac563db14..89c8a06598 100644
> --- a/lib/setlocale_null.c
> +++ b/lib/setlocale_null.c
> @@ -173,7 +173,7 @@ setlocale_null_unlocked (int category, char *buf, size_t bufsize)
> #endif
> }
>
> -#if !(SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE) /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin */
> +#if !(SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE) /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin < 3.4.6 */
>
> /* Use a lock, so that no two threads can invoke setlocale_null_unlocked
> at the same time. */
> @@ -198,7 +198,7 @@ setlocale_null_with_lock (int category, char *buf, size_t bufsize)
> return ret;
> }
>
> -# elif HAVE_PTHREAD_API /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin */
> +# elif HAVE_PTHREAD_API /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin < 3.4.6 */
>
> extern
> # if defined _WIN32 || defined __CYGWIN__
> diff --git a/m4/setlocale_null.m4 b/m4/setlocale_null.m4
> index dd6a5ef538..b41df499a8 100644
> --- a/m4/setlocale_null.m4
> +++ b/m4/setlocale_null.m4
> @@ -1,4 +1,4 @@
> -# setlocale_null.m4 serial 6
> +# setlocale_null.m4 serial 7
> dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
> dnl This file is free software; the Free Software Foundation
> dnl gives unlimited permission to copy and/or distribute it,
> @@ -13,9 +13,23 @@ AC_DEFUN([gl_FUNC_SETLOCALE_NULL],
> AC_CACHE_CHECK([whether setlocale (LC_ALL, NULL) is multithread-safe],
> [gl_cv_func_setlocale_null_all_mtsafe],
> [case "$host_os" in
> - # Guess no on musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin.
> - *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | openbsd* | aix* | haiku* | cygwin*)
> + # Guess no on musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku.
> + *-musl* | darwin* | freebsd* | midnightbsd* | netbsd* | openbsd* | aix* | haiku*)
> gl_cv_func_setlocale_null_all_mtsafe=no ;;
> + # Guess no on Cygwin < 3.4.6.
> + cygwin*)
> + AC_EGREP_CPP([Lucky user],
> + [
> +#if defined __CYGWIN__
> + #include <cygwin/version.h>
> + #if CYGWIN_VERSION_DLL_COMBINED >= CYGWIN_VERSION_DLL_MAKE_COMBINED (3004, 6)
> + Lucky user
> + #endif
> +#endif
> + ],
> + [gl_cv_func_setlocale_null_all_mtsafe=yes],
> + [gl_cv_func_setlocale_null_all_mtsafe=no])
> + ;;
> # Guess yes on glibc, HP-UX, IRIX, Solaris, native Windows.
> *-gnu* | gnu* | hpux* | irix* | solaris* | mingw*)
> gl_cv_func_setlocale_null_all_mtsafe=yes ;;
> diff --git a/tests/test-setlocale_null-mt-all.c b/tests/test-setlocale_null-mt-all.c
> index 6036c260cd..7480406639 100644
> --- a/tests/test-setlocale_null-mt-all.c
> +++ b/tests/test-setlocale_null-mt-all.c
> @@ -166,7 +166,7 @@ Solaris 11.0 OK
> Solaris 11.4 OK
> Solaris OpenIndiana OK
> Haiku crash < 1 sec
> -Cygwin crash < 1 sec
> +Cygwin < 3.4.6 crash < 1 sec
> mingw OK
> MSVC OK (assuming compiler option /MD !)
> */
>
>
next prev parent reply other threads:[~2023-02-06 20:05 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-05 19:43 [PATCH] Do not decorate symbols as dllexport on Cygwin Corinna Vinschen
2023-02-05 20:41 ` Bruno Haible
2023-02-05 20:48 ` Bruno Haible
2023-02-05 21:22 ` Corinna Vinschen
2023-02-06 15:08 ` Corinna Vinschen
2023-02-06 16:36 ` Bruno Haible
2023-02-06 17:37 ` Bruno Haible
2023-02-06 20:04 ` Corinna Vinschen [this message]
2023-02-06 20:38 ` Bruno Haible
2023-02-06 20:43 ` Corinna Vinschen
2023-02-06 20:50 ` Reuben Thomas
2023-02-07 13:22 ` Corinna Vinschen
2023-02-07 15:22 ` Corinna Vinschen
2023-02-10 14:11 ` Reuben Thomas
2023-02-10 14:21 ` Bruno Haible
2023-02-11 11:36 ` Reuben Thomas
2023-02-11 12:06 ` Corinna Vinschen
2023-02-11 12:29 ` Reuben Thomas
2023-02-11 12:40 ` Corinna Vinschen
2023-02-17 9:30 ` Reuben Thomas
2023-02-17 9:58 ` Corinna Vinschen
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