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| author | Bruno Haible <bruno@clisp.org> | 2021-03-07 02:21:49 +0100 |
|---|---|---|
| committer | Bruno Haible <bruno@clisp.org> | 2021-03-07 11:01:57 +0100 |
| commit | 92052c44910568ef6012584a344edcb736949d2c (patch) | |
| tree | f5a7d07f8d710c448b824401a73f5cb2dd7e1177 | |
| parent | 212f0b69ab67a4d6230c2ab85e28c2f54b31060c (diff) | |
| download | gnulib-92052c44910568ef6012584a344edcb736949d2c.tar.gz | |
getusershell: Optimize stdio accesses when possible.
* lib/getusershell.c: Test GNULIB_GETUSERSHELL_SINGLE_THREAD instead of
USE_UNLOCKED_IO.
* modules/getusershell (Depends-on): Add unlocked-io-internal.
* doc/multithread.texi: Document GNULIB_GETUSERSHELL_SINGLE_THREAD.
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | doc/multithread.texi | 4 | ||||
| -rw-r--r-- | lib/getusershell.c | 2 | ||||
| -rw-r--r-- | modules/getusershell | 5 |
4 files changed, 16 insertions, 3 deletions
@@ -1,5 +1,13 @@ 2021-03-06 Bruno Haible <bruno@clisp.org> + getusershell: Optimize stdio accesses when possible. + * lib/getusershell.c: Test GNULIB_GETUSERSHELL_SINGLE_THREAD instead of + USE_UNLOCKED_IO. + * modules/getusershell (Depends-on): Add unlocked-io-internal. + * doc/multithread.texi: Document GNULIB_GETUSERSHELL_SINGLE_THREAD. + +2021-03-06 Bruno Haible <bruno@clisp.org> + unlocked-io-internal: New module. * m4/unlocked-io.m4 (gl_FUNC_GLIBC_UNLOCKED_IO): Don't define USE_UNLOCKED_IO here. diff --git a/doc/multithread.texi b/doc/multithread.texi index 7fe19a7817..a63d3ee0fa 100644 --- a/doc/multithread.texi +++ b/doc/multithread.texi @@ -274,4 +274,8 @@ You may define the C macro @code{GNULIB_WCHAR_SINGLE}, if all the programs in your package are single-threaded and won't change the locale after it has been initialized. This macro optimizes the functions @code{mbrtowc} and @code{wcwidth}. +@item +You may define the C macro @code{GNULIB_GETUSERSHELL_SINGLE_THREAD}, if all the +programs in your package invoke the functions @code{setusershell}, +@code{getusershell}, @code{endusershell} only from a single thread. @end itemize diff --git a/lib/getusershell.c b/lib/getusershell.c index 6ae941052d..be8a068455 100644 --- a/lib/getusershell.c +++ b/lib/getusershell.c @@ -39,7 +39,7 @@ #include "stdio--.h" #include "xalloc.h" -#if USE_UNLOCKED_IO +#if GNULIB_GETUSERSHELL_SINGLE_THREAD # include "unlocked-io.h" #endif diff --git a/modules/getusershell b/modules/getusershell index 26f99e58ca..ed2f30f3c5 100644 --- a/modules/getusershell +++ b/modules/getusershell @@ -8,8 +8,9 @@ m4/getusershell.m4 Depends-on: unistd extensions -fopen-safer [test $HAVE_GETUSERSHELL = 0] -xalloc [test $HAVE_GETUSERSHELL = 0] +fopen-safer [test $HAVE_GETUSERSHELL = 0] +unlocked-io-internal [test $HAVE_GETUSERSHELL = 0] +xalloc [test $HAVE_GETUSERSHELL = 0] configure.ac: gl_FUNC_GETUSERSHELL |