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[198.84.214.74]) by smtp.gmail.com with ESMTPSA id h6sm3114788qke.100.2021.07.09.15.07.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 09 Jul 2021 15:07:54 -0700 (PDT) Subject: Re: [PATCH v5] Define PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN) To: "H.J. Lu" , libc-alpha@sourceware.org References: <20210709210918.4246-1-hjl.tools@gmail.com> Organization: Red Hat Message-ID: <933c80dd-eee0-97eb-7a25-1c09b00cd0ce@redhat.com> Date: Fri, 9 Jul 2021 18:07:53 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210709210918.4246-1-hjl.tools@gmail.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Carlos O'Donell via Libc-alpha Reply-To: Carlos O'Donell Errors-To: libc-alpha-bounces+e=80x24.org@sourceware.org Sender: "Libc-alpha" On 7/9/21 5:09 PM, H.J. Lu wrote: > The constant PTHREAD_STACK_MIN may be too small for some processors. > Rename _SC_SIGSTKSZ_SOURCE to _DYNAMIC_STACK_SIZE_SOURCE. When > _DYNAMIC_STACK_SIZE_SOURCE or _GNU_SOURCE are defined, define > PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN) which is changed > to MIN (PTHREAD_STACK_MIN, sysconf(_SC_MINSIGSTKSZ)). > > Consolidate with to > provide a constant target specific PTHREAD_STACK_MIN value. OK for 2.34. Reviewed-by: Carlos O'Donell > --- > NEWS | 8 +- > include/bits/local_lim.h | 7 ++ > include/features.h | 18 ++-- > manual/creature.texi | 4 +- > nptl/tst-context1.c | 15 ++- > stdlib/test-atexit-race-common.c | 11 +- > support/support_path_support_time64.c | 1 + > sysdeps/posix/sysconf-pthread_stack_min.h | 29 +++++ > sysdeps/posix/sysconf.c | 7 +- > sysdeps/unix/sysv/linux/Makefile | 3 +- > .../unix/sysv/linux/aarch64/bits/local_lim.h | 101 ------------------ > .../linux/aarch64/bits/pthread_stack_min.h | 22 ++++ > .../unix/sysv/linux/alpha/bits/local_lim.h | 99 ----------------- > .../sysv/linux/alpha/bits/pthread_stack_min.h | 20 ++++ > sysdeps/unix/sysv/linux/bits/local_lim.h | 8 +- > .../unix/sysv/linux/bits/pthread_stack_min.h | 20 ++++ > sysdeps/unix/sysv/linux/bits/sigstksz.h | 2 +- > sysdeps/unix/sysv/linux/ia64/bits/local_lim.h | 99 ----------------- > .../sysv/linux/ia64/bits/pthread_stack_min.h | 20 ++++ > sysdeps/unix/sysv/linux/mips/bits/local_lim.h | 99 ----------------- > .../sysv/linux/mips/bits/pthread_stack_min.h | 20 ++++ > .../unix/sysv/linux/powerpc/bits/local_lim.h | 100 ----------------- > .../linux/powerpc/bits/pthread_stack_min.h | 21 ++++ > .../unix/sysv/linux/sparc/bits/local_lim.h | 99 ----------------- > .../sysv/linux/sparc/bits/pthread_stack_min.h | 20 ++++ > .../sysv/linux/sysconf-pthread_stack_min.h | 39 +++++++ > 26 files changed, 266 insertions(+), 626 deletions(-) > create mode 100644 include/bits/local_lim.h > create mode 100644 sysdeps/posix/sysconf-pthread_stack_min.h > delete mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/local_lim.h > create mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/pthread_stack_min.h > delete mode 100644 sysdeps/unix/sysv/linux/alpha/bits/local_lim.h > create mode 100644 sysdeps/unix/sysv/linux/alpha/bits/pthread_stack_min.h > create mode 100644 sysdeps/unix/sysv/linux/bits/pthread_stack_min.h > delete mode 100644 sysdeps/unix/sysv/linux/ia64/bits/local_lim.h > create mode 100644 sysdeps/unix/sysv/linux/ia64/bits/pthread_stack_min.h > delete mode 100644 sysdeps/unix/sysv/linux/mips/bits/local_lim.h > create mode 100644 sysdeps/unix/sysv/linux/mips/bits/pthread_stack_min.h > delete mode 100644 sysdeps/unix/sysv/linux/powerpc/bits/local_lim.h > create mode 100644 sysdeps/unix/sysv/linux/powerpc/bits/pthread_stack_min.h > delete mode 100644 sysdeps/unix/sysv/linux/sparc/bits/local_lim.h > create mode 100644 sysdeps/unix/sysv/linux/sparc/bits/pthread_stack_min.h > create mode 100644 sysdeps/unix/sysv/linux/sysconf-pthread_stack_min.h > > diff --git a/NEWS b/NEWS > index 91d5f17598..13ffe627da 100644 > --- a/NEWS > +++ b/NEWS > @@ -9,8 +9,12 @@ Version 2.34 > > Major new features: > > -* Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ. When _SC_SIGSTKSZ_SOURCE or > - _GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are no longer > +* When _DYNAMIC_STACK_SIZE_SOURCE or _GNU_SOURCE are defined, > + PTHREAD_STACK_MIN is no longer constant and is redefined to > + sysconf(_SC_THREAD_STACK_MIN). > + > +* Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ. When _DYNAMIC_STACK_SIZE_SOURCE > + or _GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are no longer > constant on Linux. MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ) > and SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ). > > diff --git a/include/bits/local_lim.h b/include/bits/local_lim.h > new file mode 100644 > index 0000000000..46d82dc729 > --- /dev/null > +++ b/include/bits/local_lim.h > @@ -0,0 +1,7 @@ > +/* Don't define PTHREAD_STACK_MIN to sysconf (_SC_THREAD_STACK_MIN) for > + glibc build. */ > +#if !defined _ISOMAC > +# undef __USE_DYNAMIC_STACK_SIZE > +#endif > + > +#include_next > diff --git a/include/features.h b/include/features.h > index 039bcb112b..51c8a98fb0 100644 > --- a/include/features.h > +++ b/include/features.h > @@ -50,8 +50,8 @@ > _LARGEFILE64_SOURCE Additional functionality from LFS for large files. > _FILE_OFFSET_BITS=N Select default filesystem interface. > _ATFILE_SOURCE Additional *at interfaces. > - _SC_SIGSTKSZ_SOURCE Select correct (but non compile-time constant) > - MINSIGSTKSZ and SIGSTKSZ. > + _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant) > + MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN. > _GNU_SOURCE All of the above, plus GNU extensions. > _DEFAULT_SOURCE The default set of features (taking precedence over > __STRICT_ANSI__). > @@ -98,8 +98,8 @@ > __USE_FILE_OFFSET64 Define 64bit interface as default. > __USE_MISC Define things from 4.3BSD or System V Unix. > __USE_ATFILE Define *at interfaces and AT_* constants for them. > - __USE_SC_SIGSTKSZ Define correct (but non compile-time constant) > - MINSIGSTKSZ and SIGSTKSZ. > + __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant) > + MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN. > __USE_GNU Define GNU extensions. > __USE_FORTIFY_LEVEL Additional security measures used, according to level. > > @@ -143,7 +143,7 @@ > #undef __USE_FILE_OFFSET64 > #undef __USE_MISC > #undef __USE_ATFILE > -#undef __USE_SC_SIGSTKSZ > +#undef __USE_DYNAMIC_STACK_SIZE > #undef __USE_GNU > #undef __USE_FORTIFY_LEVEL > #undef __KERNEL_STRICT_NAMES > @@ -220,8 +220,8 @@ > # define _DEFAULT_SOURCE 1 > # undef _ATFILE_SOURCE > # define _ATFILE_SOURCE 1 > -# undef _SC_SIGSTKSZ_SOURCE > -# define _SC_SIGSTKSZ_SOURCE 1 > +# undef _DYNAMIC_STACK_SIZE_SOURCE > +# define _DYNAMIC_STACK_SIZE_SOURCE 1 > #endif > > /* If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined, > @@ -399,8 +399,8 @@ > # define __USE_ATFILE 1 > #endif > > -#ifdef _SC_SIGSTKSZ_SOURCE > -# define __USE_SC_SIGSTKSZ 1 > +#ifdef _DYNAMIC_STACK_SIZE_SOURCE > +# define __USE_DYNAMIC_STACK_SIZE 1 > #endif > > #ifdef _GNU_SOURCE > diff --git a/manual/creature.texi b/manual/creature.texi > index d3c4fa4702..c13de52f1f 100644 > --- a/manual/creature.texi > +++ b/manual/creature.texi > @@ -308,10 +308,10 @@ checks are applied. If defined to @math{3}, @theglibc{} may also use > checks that may have an additional performance overhead. > @end defvr > > -@defvr Macro _SC_SIGSTKSZ_SOURCE > +@defvr Macro _DYNAMIC_STACK_SIZE_SOURCE > @standards{GNU, (none)} > If this macro is defined, correct (but non compile-time constant) > -MINSIGSTKSZ and SIGSTKSZ are defined. > +MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN are defined. > @end defvr > > @defvr Macro _REENTRANT > diff --git a/nptl/tst-context1.c b/nptl/tst-context1.c > index 821f3c2133..00e39aff9f 100644 > --- a/nptl/tst-context1.c > +++ b/nptl/tst-context1.c > @@ -23,6 +23,7 @@ > #include > #include > #include > +#include > > #define N 4 > #if __WORDSIZE == 64 > @@ -36,7 +37,8 @@ typedef struct { > unsigned long guard[3]; > } tst_context_t; > > -static char stacks[N][2 * PTHREAD_STACK_MIN]; > +static char *stacks[N]; > +static size_t stack_size; > static tst_context_t ctx[N][2]; > static volatile int failures; > > @@ -79,7 +81,7 @@ fct (long int n) > exit (1); > } > > - if (on_stack < stacks[n] || on_stack >= stacks[n] + sizeof (stacks[0])) > + if (on_stack < stacks[n] || on_stack >= stacks[n] + stack_size) > { > printf ("%ld: on_stack not on appropriate stack\n", n); > exit (1); > @@ -109,7 +111,7 @@ tf (void *arg) > printf ("%d: %s: before makecontext\n", n, __FUNCTION__); > > ctx[n][1].uctx.uc_stack.ss_sp = stacks[n]; > - ctx[n][1].uctx.uc_stack.ss_size = sizeof (stacks[n]); > + ctx[n][1].uctx.uc_stack.ss_size = stack_size; > ctx[n][1].uctx.uc_link = &ctx[n][0].uctx; > makecontext (&ctx[n][1].uctx, (void (*) (void)) fct, 1, (long int) n); > > @@ -137,6 +139,10 @@ do_test (void) > pthread_t th[N]; > ucontext_t mctx; > > + stack_size = 2 * PTHREAD_STACK_MIN; > + for (int i = 0; i < N; i++) > + stacks[i] = xmalloc (stack_size); > + > puts ("making contexts"); > if (getcontext (&mctx) != 0) > { > @@ -198,6 +204,9 @@ do_test (void) > exit (1); > } > > + for (int i = 0; i < N; i++) > + free (stacks[i]); > + > return failures; > } > > diff --git a/stdlib/test-atexit-race-common.c b/stdlib/test-atexit-race-common.c > index a2b5468580..b48bb16285 100644 > --- a/stdlib/test-atexit-race-common.c > +++ b/stdlib/test-atexit-race-common.c > @@ -38,11 +38,6 @@ > > const size_t kNumThreads = 1024; > const size_t kNumHandlers = 1024; > -const size_t kStacksize = > -#ifdef PTHREAD_STACK_MIN > - 0x20000 < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : > -#endif > - 0x20000; > > static void * > threadfunc (void *unused) > @@ -66,6 +61,12 @@ do_test (void) > /* With default 8MiB Linux stack size, creating 1024 threads can cause > VM exhausiton on 32-bit machines. Reduce stack size of each thread to > 128KiB for a maximum required VM size of 128MiB. */ > + size_t kStacksize = > +#ifdef PTHREAD_STACK_MIN > + 0x20000 < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : > +#endif > + 0x20000; > + > xpthread_attr_setstacksize (&attr, kStacksize); > > for (i = 0; i < kNumThreads; ++i) { > diff --git a/support/support_path_support_time64.c b/support/support_path_support_time64.c > index 33b2bdff66..619a4eab00 100644 > --- a/support/support_path_support_time64.c > +++ b/support/support_path_support_time64.c > @@ -17,6 +17,7 @@ > . */ > > #include > +#include > #include > #include > #include > diff --git a/sysdeps/posix/sysconf-pthread_stack_min.h b/sysdeps/posix/sysconf-pthread_stack_min.h > new file mode 100644 > index 0000000000..f5be2e6f9f > --- /dev/null > +++ b/sysdeps/posix/sysconf-pthread_stack_min.h > @@ -0,0 +1,29 @@ > +/* __get_pthread_stack_min (). POSIX version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public > + License as published by the Free Software Foundation; either > + version 2.1 of the License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; if not, see > + . */ > + > +/* Return sysconf (_SC_THREAD_STACK_MIN). */ > + > +static inline long int > +__get_pthread_stack_min (void) > +{ > +#ifdef PTHREAD_STACK_MIN > + return PTHREAD_STACK_MIN; > +#else > + return -1; > +#endif > +} > diff --git a/sysdeps/posix/sysconf.c b/sysdeps/posix/sysconf.c > index 3e8ec5cd51..5fb3fb6c1c 100644 > --- a/sysdeps/posix/sysconf.c > +++ b/sysdeps/posix/sysconf.c > @@ -31,6 +31,7 @@ > #include > #include > #include > +#include > > #define NEED_SPEC_ARRAY 0 > #include > @@ -569,11 +570,7 @@ __sysconf (int name) > #endif > > case _SC_THREAD_STACK_MIN: > -#ifdef PTHREAD_STACK_MIN > - return PTHREAD_STACK_MIN; > -#else > - return -1; > -#endif > + return __get_pthread_stack_min (); > > case _SC_THREAD_THREADS_MAX: > #ifdef PTHREAD_THREADS_MAX > diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile > index d45a16af8b..7d43dc95f2 100644 > --- a/sysdeps/unix/sysv/linux/Makefile > +++ b/sysdeps/unix/sysv/linux/Makefile > @@ -108,7 +108,8 @@ sysdep_headers += sys/mount.h sys/acct.h \ > bits/types/struct_semid64_ds.h \ > bits/types/struct_semid64_ds_helper.h \ > bits/types/struct_shmid64_ds.h \ > - bits/types/struct_shmid64_ds_helper.h > + bits/types/struct_shmid64_ds_helper.h \ > + bits/pthread_stack_min.h > > tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ > tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \ > diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/local_lim.h b/sysdeps/unix/sysv/linux/aarch64/bits/local_lim.h > deleted file mode 100644 > index 0652bf4a06..0000000000 > --- a/sysdeps/unix/sysv/linux/aarch64/bits/local_lim.h > +++ /dev/null > @@ -1,101 +0,0 @@ > -/* Minimum guaranteed maximum values for system limits. Linux version. > - Copyright (C) 1993-2021 Free Software Foundation, Inc. > - > - This file is part of the GNU C Library. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Lesser General Public License as > - published by the Free Software Foundation; either version 2.1 of the > - License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Lesser General Public License for more details. > - > - You should have received a copy of the GNU Lesser General Public > - License along with the GNU C Library. If not, see > - . */ > - > -/* The kernel header pollutes the namespace with the NR_OPEN symbol > - and defines LINK_MAX although filesystems have different maxima. A > - similar thing is true for OPEN_MAX: the limit can be changed at > - runtime and therefore the macro must not be defined. Remove this > - after including the header if necessary. */ > -#ifndef NR_OPEN > -# define __undef_NR_OPEN > -#endif > -#ifndef LINK_MAX > -# define __undef_LINK_MAX > -#endif > -#ifndef OPEN_MAX > -# define __undef_OPEN_MAX > -#endif > -#ifndef ARG_MAX > -# define __undef_ARG_MAX > -#endif > - > -/* The kernel sources contain a file with all the needed information. */ > -#include > - > -/* Have to remove NR_OPEN? */ > -#ifdef __undef_NR_OPEN > -# undef NR_OPEN > -# undef __undef_NR_OPEN > -#endif > -/* Have to remove LINK_MAX? */ > -#ifdef __undef_LINK_MAX > -# undef LINK_MAX > -# undef __undef_LINK_MAX > -#endif > -/* Have to remove OPEN_MAX? */ > -#ifdef __undef_OPEN_MAX > -# undef OPEN_MAX > -# undef __undef_OPEN_MAX > -#endif > -/* Have to remove ARG_MAX? */ > -#ifdef __undef_ARG_MAX > -# undef ARG_MAX > -# undef __undef_ARG_MAX > -#endif > - > -/* The number of data keys per process. */ > -#define _POSIX_THREAD_KEYS_MAX 128 > -/* This is the value this implementation supports. */ > -#define PTHREAD_KEYS_MAX 1024 > - > -/* Controlling the iterations of destructors for thread-specific data. */ > -#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 > -/* Number of iterations this implementation does. */ > -#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS > - > -/* The number of threads per process. */ > -#define _POSIX_THREAD_THREADS_MAX 64 > -/* We have no predefined limit on the number of threads. */ > -#undef PTHREAD_THREADS_MAX > - > -/* Maximum amount by which a process can descrease its asynchronous I/O > - priority level. */ > -#define AIO_PRIO_DELTA_MAX 20 > - > -/* Minimum size for a thread. At least two pages for systems with 64k > - pages. */ > -#define PTHREAD_STACK_MIN 131072 > - > -/* Maximum number of timer expiration overruns. */ > -#define DELAYTIMER_MAX 2147483647 > - > -/* Maximum tty name length. */ > -#define TTY_NAME_MAX 32 > - > -/* Maximum login name length. This is arbitrary. */ > -#define LOGIN_NAME_MAX 256 > - > -/* Maximum host name length. */ > -#define HOST_NAME_MAX 64 > - > -/* Maximum message queue priority level. */ > -#define MQ_PRIO_MAX 32768 > - > -/* Maximum value the semaphore can have. */ > -#define SEM_VALUE_MAX (2147483647) > diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/aarch64/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..97215687ad > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/aarch64/bits/pthread_stack_min.h > @@ -0,0 +1,22 @@ > +/* Definition of PTHREAD_STACK_MIN. Linux/aarch64 version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public License as > + published by the Free Software Foundation; either version 2.1 of the > + License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library. If not, see > + . */ > + > +/* Minimum size for a thread. At least two pages for systems with 64k > + pages. */ > +#define PTHREAD_STACK_MIN 131072 > diff --git a/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h b/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h > deleted file mode 100644 > index 523407dc48..0000000000 > --- a/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h > +++ /dev/null > @@ -1,99 +0,0 @@ > -/* Minimum guaranteed maximum values for system limits. Linux/Alpha version. > - Copyright (C) 1993-2021 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Library General Public License as > - published by the Free Software Foundation; either version 2 of the > - License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Library General Public License for more details. > - > - You should have received a copy of the GNU Library General Public > - License along with the GNU C Library. If not, see > - . */ > - > -/* The kernel header pollutes the namespace with the NR_OPEN symbol > - and defines LINK_MAX although filesystems have different maxima. A > - similar thing is true for OPEN_MAX: the limit can be changed at > - runtime and therefore the macro must not be defined. Remove this > - after including the header if necessary. */ > -#ifndef NR_OPEN > -# define __undef_NR_OPEN > -#endif > -#ifndef LINK_MAX > -# define __undef_LINK_MAX > -#endif > -#ifndef OPEN_MAX > -# define __undef_OPEN_MAX > -#endif > -#ifndef ARG_MAX > -# define __undef_ARG_MAX > -#endif > - > -/* The kernel sources contain a file with all the needed information. */ > -#include > - > -/* Have to remove NR_OPEN? */ > -#ifdef __undef_NR_OPEN > -# undef NR_OPEN > -# undef __undef_NR_OPEN > -#endif > -/* Have to remove LINK_MAX? */ > -#ifdef __undef_LINK_MAX > -# undef LINK_MAX > -# undef __undef_LINK_MAX > -#endif > -/* Have to remove OPEN_MAX? */ > -#ifdef __undef_OPEN_MAX > -# undef OPEN_MAX > -# undef __undef_OPEN_MAX > -#endif > -/* Have to remove ARG_MAX? */ > -#ifdef __undef_ARG_MAX > -# undef ARG_MAX > -# undef __undef_ARG_MAX > -#endif > - > -/* The number of data keys per process. */ > -#define _POSIX_THREAD_KEYS_MAX 128 > -/* This is the value this implementation supports. */ > -#define PTHREAD_KEYS_MAX 1024 > - > -/* Controlling the iterations of destructors for thread-specific data. */ > -#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 > -/* Number of iterations this implementation does. */ > -#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS > - > -/* The number of threads per process. */ > -#define _POSIX_THREAD_THREADS_MAX 64 > -/* We have no predefined limit on the number of threads. */ > -#undef PTHREAD_THREADS_MAX > - > -/* Maximum amount by which a process can descrease its asynchronous I/O > - priority level. */ > -#define AIO_PRIO_DELTA_MAX 20 > - > -/* Minimum size for a thread. We are free to choose a reasonable value. */ > -#define PTHREAD_STACK_MIN 24576 > - > -/* Maximum number of timer expiration overruns. */ > -#define DELAYTIMER_MAX 2147483647 > - > -/* Maximum tty name length. */ > -#define TTY_NAME_MAX 32 > - > -/* Maximum login name length. This is arbitrary. */ > -#define LOGIN_NAME_MAX 256 > - > -/* Maximum host name length. */ > -#define HOST_NAME_MAX 64 > - > -/* Maximum message queue priority level. */ > -#define MQ_PRIO_MAX 32768 > - > -/* Maximum value the semaphore can have. */ > -#define SEM_VALUE_MAX (2147483647) > diff --git a/sysdeps/unix/sysv/linux/alpha/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/alpha/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..5bfb0e10dd > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/alpha/bits/pthread_stack_min.h > @@ -0,0 +1,20 @@ > +/* Definition of PTHREAD_STACK_MIN. Linux/Alpha version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Library General Public License as > + published by the Free Software Foundation; either version 2 of the > + License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Library General Public License for more details. > + > + You should have received a copy of the GNU Library General Public > + License along with the GNU C Library. If not, see > + . */ > + > +/* Minimum size for a thread. We are free to choose a reasonable value. */ > +#define PTHREAD_STACK_MIN 24576 > diff --git a/sysdeps/unix/sysv/linux/bits/local_lim.h b/sysdeps/unix/sysv/linux/bits/local_lim.h > index b88ca3d4d2..0b1c7f40be 100644 > --- a/sysdeps/unix/sysv/linux/bits/local_lim.h > +++ b/sysdeps/unix/sysv/linux/bits/local_lim.h > @@ -78,7 +78,13 @@ > #define AIO_PRIO_DELTA_MAX 20 > > /* Minimum size for a thread. We are free to choose a reasonable value. */ > -#define PTHREAD_STACK_MIN 16384 > +#undef PTHREAD_STACK_MIN > +#if defined __USE_DYNAMIC_STACK_SIZE && __USE_DYNAMIC_STACK_SIZE > +# include > +# define PTHREAD_STACK_MIN sysconf (_SC_THREAD_STACK_MIN) > +#else > +# include > +#endif > > /* Maximum number of timer expiration overruns. */ > #define DELAYTIMER_MAX 2147483647 > diff --git a/sysdeps/unix/sysv/linux/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..7bd6fa1242 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/bits/pthread_stack_min.h > @@ -0,0 +1,20 @@ > +/* Definition of PTHREAD_STACK_MIN. Linux version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public > + License as published by the Free Software Foundation; either > + version 2.1 of the License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; if not, see > + . */ > + > +/* Minimum size for a thread. We are free to choose a reasonable value. */ > +#define PTHREAD_STACK_MIN 16384 > diff --git a/sysdeps/unix/sysv/linux/bits/sigstksz.h b/sysdeps/unix/sysv/linux/bits/sigstksz.h > index 926508f2b4..cd45d122e0 100644 > --- a/sysdeps/unix/sysv/linux/bits/sigstksz.h > +++ b/sysdeps/unix/sysv/linux/bits/sigstksz.h > @@ -20,7 +20,7 @@ > # error "Never include directly; use instead." > #endif > > -#if defined __USE_SC_SIGSTKSZ && __USE_SC_SIGSTKSZ > +#if defined __USE_DYNAMIC_STACK_SIZE && __USE_DYNAMIC_STACK_SIZE > # include > > /* Default stack size for a signal handler: sysconf (SC_SIGSTKSZ). */ > diff --git a/sysdeps/unix/sysv/linux/ia64/bits/local_lim.h b/sysdeps/unix/sysv/linux/ia64/bits/local_lim.h > deleted file mode 100644 > index 7a9f677ec8..0000000000 > --- a/sysdeps/unix/sysv/linux/ia64/bits/local_lim.h > +++ /dev/null > @@ -1,99 +0,0 @@ > -/* Minimum guaranteed maximum values for system limits. Linux/IA-64 version. > - Copyright (C) 1993-2021 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Lesser General Public > - License as published by the Free Software Foundation; either > - version 2.1 of the License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Lesser General Public License for more details. > - > - You should have received a copy of the GNU Lesser General Public > - License along with the GNU C Library; if not, see > - . */ > - > -/* The kernel header pollutes the namespace with the NR_OPEN symbol > - and defines LINK_MAX although filesystems have different maxima. A > - similar thing is true for OPEN_MAX: the limit can be changed at > - runtime and therefore the macro must not be defined. Remove this > - after including the header if necessary. */ > -#ifndef NR_OPEN > -# define __undef_NR_OPEN > -#endif > -#ifndef LINK_MAX > -# define __undef_LINK_MAX > -#endif > -#ifndef OPEN_MAX > -# define __undef_OPEN_MAX > -#endif > -#ifndef ARG_MAX > -# define __undef_ARG_MAX > -#endif > - > -/* The kernel sources contain a file with all the needed information. */ > -#include > - > -/* Have to remove NR_OPEN? */ > -#ifdef __undef_NR_OPEN > -# undef NR_OPEN > -# undef __undef_NR_OPEN > -#endif > -/* Have to remove LINK_MAX? */ > -#ifdef __undef_LINK_MAX > -# undef LINK_MAX > -# undef __undef_LINK_MAX > -#endif > -/* Have to remove OPEN_MAX? */ > -#ifdef __undef_OPEN_MAX > -# undef OPEN_MAX > -# undef __undef_OPEN_MAX > -#endif > -/* Have to remove ARG_MAX? */ > -#ifdef __undef_ARG_MAX > -# undef ARG_MAX > -# undef __undef_ARG_MAX > -#endif > - > -/* The number of data keys per process. */ > -#define _POSIX_THREAD_KEYS_MAX 128 > -/* This is the value this implementation supports. */ > -#define PTHREAD_KEYS_MAX 1024 > - > -/* Controlling the iterations of destructors for thread-specific data. */ > -#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 > -/* Number of iterations this implementation does. */ > -#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS > - > -/* The number of threads per process. */ > -#define _POSIX_THREAD_THREADS_MAX 64 > -/* We have no predefined limit on the number of threads. */ > -#undef PTHREAD_THREADS_MAX > - > -/* Maximum amount by which a process can descrease its asynchronous I/O > - priority level. */ > -#define AIO_PRIO_DELTA_MAX 20 > - > -/* Minimum size for a thread. We are free to choose a reasonable value. */ > -#define PTHREAD_STACK_MIN 196608 > - > -/* Maximum number of timer expiration overruns. */ > -#define DELAYTIMER_MAX 2147483647 > - > -/* Maximum tty name length. */ > -#define TTY_NAME_MAX 32 > - > -/* Maximum login name length. This is arbitrary. */ > -#define LOGIN_NAME_MAX 256 > - > -/* Maximum host name length. */ > -#define HOST_NAME_MAX 64 > - > -/* Maximum message queue priority level. */ > -#define MQ_PRIO_MAX 32768 > - > -/* Maximum value the semaphore can have. */ > -#define SEM_VALUE_MAX (2147483647) > diff --git a/sysdeps/unix/sysv/linux/ia64/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/ia64/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..73581506b2 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/ia64/bits/pthread_stack_min.h > @@ -0,0 +1,20 @@ > +/* Definition of PTHREAD_STACK_MIN. Linux/IA-64 version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public > + License as published by the Free Software Foundation; either > + version 2.1 of the License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; if not, see > + . */ > + > +/* Minimum size for a thread. We are free to choose a reasonable value. */ > +#define PTHREAD_STACK_MIN 196608 > diff --git a/sysdeps/unix/sysv/linux/mips/bits/local_lim.h b/sysdeps/unix/sysv/linux/mips/bits/local_lim.h > deleted file mode 100644 > index a6a0d8a980..0000000000 > --- a/sysdeps/unix/sysv/linux/mips/bits/local_lim.h > +++ /dev/null > @@ -1,99 +0,0 @@ > -/* Minimum guaranteed maximum values for system limits. MIPS Linux version. > - Copyright (C) 1993-2021 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Lesser General Public License as > - published by the Free Software Foundation; either version 2.1 of the > - License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Lesser General Public License for more details. > - > - You should have received a copy of the GNU Lesser General Public > - License along with the GNU C Library. If not, see > - . */ > - > -/* The kernel header pollutes the namespace with the NR_OPEN symbol > - and defines LINK_MAX although filesystems have different maxima. A > - similar thing is true for OPEN_MAX: the limit can be changed at > - runtime and therefore the macro must not be defined. Remove this > - after including the header if necessary. */ > -#ifndef NR_OPEN > -# define __undef_NR_OPEN > -#endif > -#ifndef LINK_MAX > -# define __undef_LINK_MAX > -#endif > -#ifndef OPEN_MAX > -# define __undef_OPEN_MAX > -#endif > -#ifndef ARG_MAX > -# define __undef_ARG_MAX > -#endif > - > -/* The kernel sources contain a file with all the needed information. */ > -#include > - > -/* Have to remove NR_OPEN? */ > -#ifdef __undef_NR_OPEN > -# undef NR_OPEN > -# undef __undef_NR_OPEN > -#endif > -/* Have to remove LINK_MAX? */ > -#ifdef __undef_LINK_MAX > -# undef LINK_MAX > -# undef __undef_LINK_MAX > -#endif > -/* Have to remove OPEN_MAX? */ > -#ifdef __undef_OPEN_MAX > -# undef OPEN_MAX > -# undef __undef_OPEN_MAX > -#endif > -/* Have to remove ARG_MAX? */ > -#ifdef __undef_ARG_MAX > -# undef ARG_MAX > -# undef __undef_ARG_MAX > -#endif > - > -/* The number of data keys per process. */ > -#define _POSIX_THREAD_KEYS_MAX 128 > -/* This is the value this implementation supports. */ > -#define PTHREAD_KEYS_MAX 1024 > - > -/* Controlling the iterations of destructors for thread-specific data. */ > -#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 > -/* Number of iterations this implementation does. */ > -#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS > - > -/* The number of threads per process. */ > -#define _POSIX_THREAD_THREADS_MAX 64 > -/* We have no predefined limit on the number of threads. */ > -#undef PTHREAD_THREADS_MAX > - > -/* Maximum amount by which a process can descrease its asynchronous I/O > - priority level. */ > -#define AIO_PRIO_DELTA_MAX 20 > - > -/* Minimum size for a thread. At least two pages with 64k pages. */ > -#define PTHREAD_STACK_MIN 131072 > - > -/* Maximum number of timer expiration overruns. */ > -#define DELAYTIMER_MAX 2147483647 > - > -/* Maximum tty name length. */ > -#define TTY_NAME_MAX 32 > - > -/* Maximum login name length. This is arbitrary. */ > -#define LOGIN_NAME_MAX 256 > - > -/* Maximum host name length. */ > -#define HOST_NAME_MAX 64 > - > -/* Maximum message queue priority level. */ > -#define MQ_PRIO_MAX 32768 > - > -/* Maximum value the semaphore can have. */ > -#define SEM_VALUE_MAX (2147483647) > diff --git a/sysdeps/unix/sysv/linux/mips/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/mips/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..132f1704a5 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/mips/bits/pthread_stack_min.h > @@ -0,0 +1,20 @@ > +/* Definition of PTHREAD_STACK_MIN. MIPS Linux version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public License as > + published by the Free Software Foundation; either version 2.1 of the > + License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library. If not, see > + . */ > + > +/* Minimum size for a thread. At least two pages with 64k pages. */ > +#define PTHREAD_STACK_MIN 131072 > diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/local_lim.h b/sysdeps/unix/sysv/linux/powerpc/bits/local_lim.h > deleted file mode 100644 > index 6caa627506..0000000000 > --- a/sysdeps/unix/sysv/linux/powerpc/bits/local_lim.h > +++ /dev/null > @@ -1,100 +0,0 @@ > -/* Minimum guaranteed maximum values for system limits. Linux/PPC version. > - Copyright (C) 1993-2021 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Lesser General Public License as > - published by the Free Software Foundation; either version 2.1 of the > - License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Lesser General Public License for more details. > - > - You should have received a copy of the GNU Lesser General Public > - License along with the GNU C Library; see the file COPYING.LIB. If > - not, see . */ > - > -/* The kernel header pollutes the namespace with the NR_OPEN symbol > - and defines LINK_MAX although filesystems have different maxima. A > - similar thing is true for OPEN_MAX: the limit can be changed at > - runtime and therefore the macro must not be defined. Remove this > - after including the header if necessary. */ > -#ifndef NR_OPEN > -# define __undef_NR_OPEN > -#endif > -#ifndef LINK_MAX > -# define __undef_LINK_MAX > -#endif > -#ifndef OPEN_MAX > -# define __undef_OPEN_MAX > -#endif > -#ifndef ARG_MAX > -# define __undef_ARG_MAX > -#endif > - > -/* The kernel sources contain a file with all the needed information. */ > -#include > - > -/* Have to remove NR_OPEN? */ > -#ifdef __undef_NR_OPEN > -# undef NR_OPEN > -# undef __undef_NR_OPEN > -#endif > -/* Have to remove LINK_MAX? */ > -#ifdef __undef_LINK_MAX > -# undef LINK_MAX > -# undef __undef_LINK_MAX > -#endif > -/* Have to remove OPEN_MAX? */ > -#ifdef __undef_OPEN_MAX > -# undef OPEN_MAX > -# undef __undef_OPEN_MAX > -#endif > -/* Have to remove ARG_MAX? */ > -#ifdef __undef_ARG_MAX > -# undef ARG_MAX > -# undef __undef_ARG_MAX > -#endif > - > -/* The number of data keys per process. */ > -#define _POSIX_THREAD_KEYS_MAX 128 > -/* This is the value this implementation supports. */ > -#define PTHREAD_KEYS_MAX 1024 > - > -/* Controlling the iterations of destructors for thread-specific data. */ > -#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 > -/* Number of iterations this implementation does. */ > -#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS > - > -/* The number of threads per process. */ > -#define _POSIX_THREAD_THREADS_MAX 64 > -/* We have no predefined limit on the number of threads. */ > -#undef PTHREAD_THREADS_MAX > - > -/* Maximum amount by which a process can descrease its asynchronous I/O > - priority level. */ > -#define AIO_PRIO_DELTA_MAX 20 > - > -/* Minimum size for a thread. At least two pages for systems with 64k > - pages. */ > -#define PTHREAD_STACK_MIN 131072 > - > -/* Maximum number of timer expiration overruns. */ > -#define DELAYTIMER_MAX 2147483647 > - > -/* Maximum tty name length. */ > -#define TTY_NAME_MAX 32 > - > -/* Maximum login name length. This is arbitrary. */ > -#define LOGIN_NAME_MAX 256 > - > -/* Maximum host name length. */ > -#define HOST_NAME_MAX 64 > - > -/* Maximum message queue priority level. */ > -#define MQ_PRIO_MAX 32768 > - > -/* Maximum value the semaphore can have. */ > -#define SEM_VALUE_MAX (2147483647) > diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/powerpc/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..d7017e7b24 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/powerpc/bits/pthread_stack_min.h > @@ -0,0 +1,21 @@ > +/* Definition of PTHREAD_STACK_MIN. Linux/PPC version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public License as > + published by the Free Software Foundation; either version 2.1 of the > + License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; see the file COPYING.LIB. If > + not, see . */ > + > +/* Minimum size for a thread. At least two pages for systems with 64k > + pages. */ > +#define PTHREAD_STACK_MIN 131072 > diff --git a/sysdeps/unix/sysv/linux/sparc/bits/local_lim.h b/sysdeps/unix/sysv/linux/sparc/bits/local_lim.h > deleted file mode 100644 > index 4a9a8c1325..0000000000 > --- a/sysdeps/unix/sysv/linux/sparc/bits/local_lim.h > +++ /dev/null > @@ -1,99 +0,0 @@ > -/* Minimum guaranteed maximum values for system limits. Linux/SPARC version. > - Copyright (C) 1993-2021 Free Software Foundation, Inc. > - This file is part of the GNU C Library. > - > - The GNU C Library is free software; you can redistribute it and/or > - modify it under the terms of the GNU Library General Public License as > - published by the Free Software Foundation; either version 2 of the > - License, or (at your option) any later version. > - > - The GNU C Library is distributed in the hope that it will be useful, > - but WITHOUT ANY WARRANTY; without even the implied warranty of > - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > - Library General Public License for more details. > - > - You should have received a copy of the GNU Library General Public > - License along with the GNU C Library; see the file COPYING.LIB. If > - not, see . */ > - > -/* The kernel header pollutes the namespace with the NR_OPEN symbol > - and defines LINK_MAX although filesystems have different maxima. A > - similar thing is true for OPEN_MAX: the limit can be changed at > - runtime and therefore the macro must not be defined. Remove this > - after including the header if necessary. */ > -#ifndef NR_OPEN > -# define __undef_NR_OPEN > -#endif > -#ifndef LINK_MAX > -# define __undef_LINK_MAX > -#endif > -#ifndef OPEN_MAX > -# define __undef_OPEN_MAX > -#endif > -#ifndef ARG_MAX > -# define __undef_ARG_MAX > -#endif > - > -/* The kernel sources contain a file with all the needed information. */ > -#include > - > -/* Have to remove NR_OPEN? */ > -#ifdef __undef_NR_OPEN > -# undef NR_OPEN > -# undef __undef_NR_OPEN > -#endif > -/* Have to remove LINK_MAX? */ > -#ifdef __undef_LINK_MAX > -# undef LINK_MAX > -# undef __undef_LINK_MAX > -#endif > -/* Have to remove OPEN_MAX? */ > -#ifdef __undef_OPEN_MAX > -# undef OPEN_MAX > -# undef __undef_OPEN_MAX > -#endif > -/* Have to remove ARG_MAX? */ > -#ifdef __undef_ARG_MAX > -# undef ARG_MAX > -# undef __undef_ARG_MAX > -#endif > - > -/* The number of data keys per process. */ > -#define _POSIX_THREAD_KEYS_MAX 128 > -/* This is the value this implementation supports. */ > -#define PTHREAD_KEYS_MAX 1024 > - > -/* Controlling the iterations of destructors for thread-specific data. */ > -#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 > -/* Number of iterations this implementation does. */ > -#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS > - > -/* The number of threads per process. */ > -#define _POSIX_THREAD_THREADS_MAX 64 > -/* We have no predefined limit on the number of threads. */ > -#undef PTHREAD_THREADS_MAX > - > -/* Maximum amount by which a process can descrease its asynchronous I/O > - priority level. */ > -#define AIO_PRIO_DELTA_MAX 20 > - > -/* Minimum size for a thread. We are free to choose a reasonable value. */ > -#define PTHREAD_STACK_MIN 24576 > - > -/* Maximum number of timer expiration overruns. */ > -#define DELAYTIMER_MAX 2147483647 > - > -/* Maximum tty name length. */ > -#define TTY_NAME_MAX 32 > - > -/* Maximum login name length. This is arbitrary. */ > -#define LOGIN_NAME_MAX 256 > - > -/* Maximum host name length. */ > -#define HOST_NAME_MAX 64 > - > -/* Maximum message queue priority level. */ > -#define MQ_PRIO_MAX 32768 > - > -/* Maximum value the semaphore can have. */ > -#define SEM_VALUE_MAX (2147483647) > diff --git a/sysdeps/unix/sysv/linux/sparc/bits/pthread_stack_min.h b/sysdeps/unix/sysv/linux/sparc/bits/pthread_stack_min.h > new file mode 100644 > index 0000000000..bcacedb73b > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/sparc/bits/pthread_stack_min.h > @@ -0,0 +1,20 @@ > +/* Definition of PTHREAD_STACK_MIN. Linux/SPARC version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Library General Public License as > + published by the Free Software Foundation; either version 2 of the > + License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Library General Public License for more details. > + > + You should have received a copy of the GNU Library General Public > + License along with the GNU C Library; see the file COPYING.LIB. If > + not, see . */ > + > +/* Minimum size for a thread. We are free to choose a reasonable value. */ > +#define PTHREAD_STACK_MIN 24576 > diff --git a/sysdeps/unix/sysv/linux/sysconf-pthread_stack_min.h b/sysdeps/unix/sysv/linux/sysconf-pthread_stack_min.h > new file mode 100644 > index 0000000000..9e0eb0f7fc > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/sysconf-pthread_stack_min.h > @@ -0,0 +1,39 @@ > +/* __get_pthread_stack_min (). Linux version. > + Copyright (C) 2021 Free Software Foundation, Inc. > + This file is part of the GNU C Library. > + > + The GNU C Library is free software; you can redistribute it and/or > + modify it under the terms of the GNU Lesser General Public > + License as published by the Free Software Foundation; either > + version 2.1 of the License, or (at your option) any later version. > + > + The GNU C Library is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + Lesser General Public License for more details. > + > + You should have received a copy of the GNU Lesser General Public > + License along with the GNU C Library; if not, see > + . */ > + > +/* Return sysconf (_SC_THREAD_STACK_MIN). */ > + > +static inline long int > +__get_pthread_stack_min (void) > +{ > + /* sysconf (_SC_THREAD_STACK_MIN) >= sysconf (_SC_MINSIGSTKSZ). */ > + long int pthread_stack_min = GLRO(dl_minsigstacksize); > + assert (pthread_stack_min != 0); > + _Static_assert (__builtin_constant_p (PTHREAD_STACK_MIN), > + "PTHREAD_STACK_MIN is constant"); > + /* Return MAX (PTHREAD_STACK_MIN, pthread_stack_min). */ > + if (pthread_stack_min < PTHREAD_STACK_MIN) > + pthread_stack_min = PTHREAD_STACK_MIN; > + /* We have a private interface, __pthread_get_minstack@GLIBC_PRIVATE > + which returns a larger size that includes the required TLS variable > + space which has been determined at startup. For sysconf here we are > + conservative and don't include the space required for TLS access. > + Eventually the TLS variable space will not be part of the stack > + (Bug 11787). */ > + return pthread_stack_min; > +} > -- Cheers, Carlos.