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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
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8
sysdeps/unix/sysv/linux/bits/local_lim.h
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@ -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 <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. */
#define DELAYTIMER_MAX 2147483647

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