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(localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id CDDA3C02EA; Fri, 9 Jul 2021 13:01:57 -0700 (PDT) To: libc-alpha@sourceware.org Subject: [PATCH v4] Define PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN) Date: Fri, 9 Jul 2021 13:01:57 -0700 Message-Id: <20210709200157.3036264-1-hjl.tools@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Spam-Status: No, score=-3032.4 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_SHORT, RCVD_IN_BARRACUDACENTRAL, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org 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: , X-Patchwork-Original-From: "H.J. Lu via Libc-alpha" From: "H.J. Lu" Reply-To: "H.J. Lu" Cc: Florian Weimer , Joseph Myers Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" 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. --- 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..8013c4d6b7 --- /dev/null +++ b/sysdeps/posix/sysconf-pthread_stack_min.h @@ -0,0 +1,29 @@ +/* sysconf_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..0291ea8814 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sysconf-pthread_stack_min.h @@ -0,0 +1,39 @@ +/* sysconf_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; +}