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Define PTHREAD_STACK_MIN to sysconf(_SC_THREAD_STACK_MIN)

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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 <bits/local_lim.h> with <bits/pthread_stack_min.h> to
provide a constant target specific PTHREAD_STACK_MIN value.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
H.J. Lu
2021-06-21 12:42:56 -07:00
parent 7c241325d6
commit 5d98a7dae9
26 changed files with 266 additions and 626 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
NEWS
View File

@ -9,8 +9,12 @@ Version 2.34
Major new features: Major new features:
* Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ. When _SC_SIGSTKSZ_SOURCE or * When _DYNAMIC_STACK_SIZE_SOURCE or _GNU_SOURCE are defined,
_GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are no longer 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) constant on Linux. MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ)
and SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ). and SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ).

7
include/bits/local_lim.h Normal file
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@ -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 <bits/local_lim.h>

18
include/features.h
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@ -50,8 +50,8 @@
_LARGEFILE64_SOURCE Additional functionality from LFS for large files. _LARGEFILE64_SOURCE Additional functionality from LFS for large files.
_FILE_OFFSET_BITS=N Select default filesystem interface. _FILE_OFFSET_BITS=N Select default filesystem interface.
_ATFILE_SOURCE Additional *at interfaces. _ATFILE_SOURCE Additional *at interfaces.
_SC_SIGSTKSZ_SOURCE Select correct (but non compile-time constant) _DYNAMIC_STACK_SIZE_SOURCE Select correct (but non compile-time constant)
MINSIGSTKSZ and SIGSTKSZ. MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
_GNU_SOURCE All of the above, plus GNU extensions. _GNU_SOURCE All of the above, plus GNU extensions.
_DEFAULT_SOURCE The default set of features (taking precedence over _DEFAULT_SOURCE The default set of features (taking precedence over
__STRICT_ANSI__). __STRICT_ANSI__).
@ -98,8 +98,8 @@
__USE_FILE_OFFSET64 Define 64bit interface as default. __USE_FILE_OFFSET64 Define 64bit interface as default.
__USE_MISC Define things from 4.3BSD or System V Unix. __USE_MISC Define things from 4.3BSD or System V Unix.
__USE_ATFILE Define *at interfaces and AT_* constants for them. __USE_ATFILE Define *at interfaces and AT_* constants for them.
__USE_SC_SIGSTKSZ Define correct (but non compile-time constant) __USE_DYNAMIC_STACK_SIZE Define correct (but non compile-time constant)
MINSIGSTKSZ and SIGSTKSZ. MINSIGSTKSZ, SIGSTKSZ and PTHREAD_STACK_MIN.
__USE_GNU Define GNU extensions. __USE_GNU Define GNU extensions.
__USE_FORTIFY_LEVEL Additional security measures used, according to level. __USE_FORTIFY_LEVEL Additional security measures used, according to level.
@ -143,7 +143,7 @@
#undef __USE_FILE_OFFSET64 #undef __USE_FILE_OFFSET64
#undef __USE_MISC #undef __USE_MISC
#undef __USE_ATFILE #undef __USE_ATFILE
#undef __USE_SC_SIGSTKSZ #undef __USE_DYNAMIC_STACK_SIZE
#undef __USE_GNU #undef __USE_GNU
#undef __USE_FORTIFY_LEVEL #undef __USE_FORTIFY_LEVEL
#undef __KERNEL_STRICT_NAMES #undef __KERNEL_STRICT_NAMES
@ -220,8 +220,8 @@
# define _DEFAULT_SOURCE 1 # define _DEFAULT_SOURCE 1
# undef _ATFILE_SOURCE # undef _ATFILE_SOURCE
# define _ATFILE_SOURCE 1 # define _ATFILE_SOURCE 1
# undef _SC_SIGSTKSZ_SOURCE # undef _DYNAMIC_STACK_SIZE_SOURCE
# define _SC_SIGSTKSZ_SOURCE 1 # define _DYNAMIC_STACK_SIZE_SOURCE 1
#endif #endif
/* If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined, /* If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
@ -399,8 +399,8 @@
# define __USE_ATFILE 1 # define __USE_ATFILE 1
#endif #endif
#ifdef _SC_SIGSTKSZ_SOURCE #ifdef _DYNAMIC_STACK_SIZE_SOURCE
# define __USE_SC_SIGSTKSZ 1 # define __USE_DYNAMIC_STACK_SIZE 1
#endif #endif
#ifdef _GNU_SOURCE #ifdef _GNU_SOURCE

4
manual/creature.texi
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@ -308,10 +308,10 @@ checks are applied. If defined to @math{3}, @theglibc{} may also use
checks that may have an additional performance overhead. checks that may have an additional performance overhead.
@end defvr @end defvr
@defvr Macro _SC_SIGSTKSZ_SOURCE @defvr Macro _DYNAMIC_STACK_SIZE_SOURCE
@standards{GNU, (none)} @standards{GNU, (none)}
If this macro is defined, correct (but non compile-time constant) 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 @end defvr
@defvr Macro _REENTRANT @defvr Macro _REENTRANT

15
nptl/tst-context1.c
View File

@ -23,6 +23,7 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <ucontext.h> #include <ucontext.h>
#include <support/support.h>
#define N 4 #define N 4
#if __WORDSIZE == 64 #if __WORDSIZE == 64
@ -36,7 +37,8 @@ typedef struct {
unsigned long guard[3]; unsigned long guard[3];
} tst_context_t; } 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 tst_context_t ctx[N][2];
static volatile int failures; static volatile int failures;
@ -79,7 +81,7 @@ fct (long int n)
exit (1); 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); printf ("%ld: on_stack not on appropriate stack\n", n);
exit (1); exit (1);
@ -109,7 +111,7 @@ tf (void *arg)
printf ("%d: %s: before makecontext\n", n, __FUNCTION__); 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_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; ctx[n][1].uctx.uc_link = &ctx[n][0].uctx;
makecontext (&ctx[n][1].uctx, (void (*) (void)) fct, 1, (long int) n); makecontext (&ctx[n][1].uctx, (void (*) (void)) fct, 1, (long int) n);
@ -137,6 +139,10 @@ do_test (void)
pthread_t th[N]; pthread_t th[N];
ucontext_t mctx; ucontext_t mctx;
stack_size = 2 * PTHREAD_STACK_MIN;
for (int i = 0; i < N; i++)
stacks[i] = xmalloc (stack_size);
puts ("making contexts"); puts ("making contexts");
if (getcontext (&mctx) != 0) if (getcontext (&mctx) != 0)
{ {
@ -198,6 +204,9 @@ do_test (void)
exit (1); exit (1);
} }
for (int i = 0; i < N; i++)
free (stacks[i]);
return failures; return failures;
} }

11
stdlib/test-atexit-race-common.c
View File

@ -38,11 +38,6 @@
const size_t kNumThreads = 1024; const size_t kNumThreads = 1024;
const size_t kNumHandlers = 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 * static void *
threadfunc (void *unused) threadfunc (void *unused)
@ -66,6 +61,12 @@ do_test (void)
/* With default 8MiB Linux stack size, creating 1024 threads can cause /* With default 8MiB Linux stack size, creating 1024 threads can cause
VM exhausiton on 32-bit machines. Reduce stack size of each thread to VM exhausiton on 32-bit machines. Reduce stack size of each thread to
128KiB for a maximum required VM size of 128MiB. */ 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); xpthread_attr_setstacksize (&attr, kStacksize);
for (i = 0; i < kNumThreads; ++i) { for (i = 0; i < kNumThreads; ++i) {

1
support/support_path_support_time64.c
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@ -17,6 +17,7 @@
<https://www.gnu.org/licenses/>. */ <https://www.gnu.org/licenses/>. */
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h>
#include <support/check.h> #include <support/check.h>
#include <support/support.h> #include <support/support.h>
#include <sys/stat.h> #include <sys/stat.h>

29
sysdeps/posix/sysconf-pthread_stack_min.h Normal file
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@ -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
<https://www.gnu.org/licenses/>. */
/* 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
}

7
sysdeps/posix/sysconf.c
View File

@ -31,6 +31,7 @@
#include <sys/types.h> #include <sys/types.h>
#include <sys/uio.h> #include <sys/uio.h>
#include <regex.h> #include <regex.h>
#include <sysconf-pthread_stack_min.h>
#define NEED_SPEC_ARRAY 0 #define NEED_SPEC_ARRAY 0
#include <posix-conf-vars.h> #include <posix-conf-vars.h>
@ -569,11 +570,7 @@ __sysconf (int name)
#endif #endif
case _SC_THREAD_STACK_MIN: case _SC_THREAD_STACK_MIN:
#ifdef PTHREAD_STACK_MIN return __get_pthread_stack_min ();
return PTHREAD_STACK_MIN;
#else
return -1;
#endif
case _SC_THREAD_THREADS_MAX: case _SC_THREAD_THREADS_MAX:
#ifdef PTHREAD_THREADS_MAX #ifdef PTHREAD_THREADS_MAX

3
sysdeps/unix/sysv/linux/Makefile
View File

@ -108,7 +108,8 @@ sysdep_headers += sys/mount.h sys/acct.h \
bits/types/struct_semid64_ds.h \ bits/types/struct_semid64_ds.h \
bits/types/struct_semid64_ds_helper.h \ bits/types/struct_semid64_ds_helper.h \
bits/types/struct_shmid64_ds.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 \ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \ tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \

101
sysdeps/unix/sysv/linux/aarch64/bits/local_lim.h
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@ -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
<https://www.gnu.org/licenses/>. */
/* 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 <linux/limits.h>
/* 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)

22
sysdeps/unix/sysv/linux/aarch64/bits/pthread_stack_min.h Normal file
View File

@ -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
<https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. At least two pages for systems with 64k
pages. */
#define PTHREAD_STACK_MIN 131072

99
sysdeps/unix/sysv/linux/alpha/bits/local_lim.h
View File

@ -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
<https://www.gnu.org/licenses/>. */
/* 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 <linux/limits.h>
/* 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)

20
sysdeps/unix/sysv/linux/alpha/bits/pthread_stack_min.h Normal file
View File

@ -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
<https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. We are free to choose a reasonable value. */
#define PTHREAD_STACK_MIN 24576

8
sysdeps/unix/sysv/linux/bits/local_lim.h
View File

@ -78,7 +78,13 @@
#define AIO_PRIO_DELTA_MAX 20 #define AIO_PRIO_DELTA_MAX 20
/* Minimum size for a thread. We are free to choose a reasonable value. */ /* 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 <unistd.h>
# define PTHREAD_STACK_MIN sysconf (_SC_THREAD_STACK_MIN)
#else
# include <bits/pthread_stack_min.h>
#endif
/* Maximum number of timer expiration overruns. */ /* Maximum number of timer expiration overruns. */
#define DELAYTIMER_MAX 2147483647 #define DELAYTIMER_MAX 2147483647

20
sysdeps/unix/sysv/linux/bits/pthread_stack_min.h Normal file
View File

@ -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
<https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. We are free to choose a reasonable value. */
#define PTHREAD_STACK_MIN 16384

2
sysdeps/unix/sysv/linux/bits/sigstksz.h
View File

@ -20,7 +20,7 @@
# error "Never include <bits/sigstksz.h> directly; use <signal.h> instead." # error "Never include <bits/sigstksz.h> directly; use <signal.h> instead."
#endif #endif
#if defined __USE_SC_SIGSTKSZ && __USE_SC_SIGSTKSZ #if defined __USE_DYNAMIC_STACK_SIZE && __USE_DYNAMIC_STACK_SIZE
# include <unistd.h> # include <unistd.h>
/* Default stack size for a signal handler: sysconf (SC_SIGSTKSZ). */ /* Default stack size for a signal handler: sysconf (SC_SIGSTKSZ). */

99
sysdeps/unix/sysv/linux/ia64/bits/local_lim.h
View File

@ -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
<https://www.gnu.org/licenses/>. */
/* 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 <linux/limits.h>
/* 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)

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/* 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
<https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. We are free to choose a reasonable value. */
#define PTHREAD_STACK_MIN 196608

99
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/* 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
<https://www.gnu.org/licenses/>. */
/* 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 <linux/limits.h>
/* 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)

20
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/* 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
<https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. At least two pages with 64k pages. */
#define PTHREAD_STACK_MIN 131072

100
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/* 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 <https://www.gnu.org/licenses/>. */
/* 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 <linux/limits.h>
/* 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)

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/* 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 <https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. At least two pages for systems with 64k
pages. */
#define PTHREAD_STACK_MIN 131072

99
sysdeps/unix/sysv/linux/sparc/bits/local_lim.h
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/* 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 <https://www.gnu.org/licenses/>. */
/* 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 <linux/limits.h>
/* 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)

20
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/* 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 <https://www.gnu.org/licenses/>. */
/* Minimum size for a thread. We are free to choose a reasonable value. */
#define PTHREAD_STACK_MIN 24576

39
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/* __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
<https://www.gnu.org/licenses/>. */
/* 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;
}