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a1bdd81664
The main drive is to optimize the internal usage and required size when sigset_t is embedded in other data structures. On Linux, the current supported signal set requires up to 8 bytes (16 on mips), was lower than the user defined sigset_t (128 bytes). A new internal type internal_sigset_t is added, along with the functions to operate on it similar to the ones for sigset_t. The internal-signals.h is also refactored to remove unused functions Besides small stack usage on some functions (posix_spawn, abort) it lower the struct pthread by about 120 bytes (112 on mips). Checked on x86_64-linux-gnu. Reviewed-by: Arjun Shankar <arjun@redhat.com>
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/* Check resulting signal mask from POSIX timer using SIGEV_THREAD.
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Copyright (C) 2020-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <time.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <support/check.h>
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#include <support/test-driver.h>
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#include <support/xthread.h>
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#include <internal-signals.h>
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static pthread_barrier_t barrier;
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static void
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thread_handler (union sigval sv)
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{
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sigset_t ss;
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sigprocmask (SIG_BLOCK, NULL, &ss);
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if (test_verbose > 0)
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printf ("%s: blocked signal mask = { ", __func__);
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for (int sig = 1; sig < NSIG; sig++)
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{
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/* POSIX timers threads created to handle SIGEV_THREAD block all
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signals except SIGKILL, SIGSTOP and glibc internals ones. */
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if (sigismember (&ss, sig))
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{
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TEST_VERIFY (sig != SIGKILL && sig != SIGSTOP);
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TEST_VERIFY (!is_internal_signal (sig));
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}
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if (test_verbose && sigismember (&ss, sig))
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printf ("%d, ", sig);
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}
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if (test_verbose > 0)
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printf ("}\n");
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xpthread_barrier_wait (&barrier);
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}
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static int
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do_test (void)
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{
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struct sigevent sev = { 0 };
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sev.sigev_notify = SIGEV_THREAD;
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sev.sigev_notify_function = &thread_handler;
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timer_t timerid;
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TEST_COMPARE (timer_create (CLOCK_REALTIME, &sev, &timerid), 0);
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xpthread_barrier_init (&barrier, NULL, 2);
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struct itimerspec trigger = { 0 };
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trigger.it_value.tv_nsec = 1000000;
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TEST_COMPARE (timer_settime (timerid, 0, &trigger, NULL), 0);
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xpthread_barrier_wait (&barrier);
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return 0;
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}
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#include <support/test-driver.c>
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