--- /dev/null
+/* Test of sigdelay in a single-threaded program.
+ Copyright (C) 2011-2026 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2026. */
+
+#include <config.h>
+
+/* Specification. */
+#include "sigdelay.h"
+
+#include <errno.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "virtualbox.h"
+#include "macros.h"
+
+#if !(defined _WIN32 && !defined __CYGWIN__)
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (_GL_UNUSED int sig)
+{
+ sigint_occurred++;
+}
+
+int
+main ()
+{
+ /* This test occasionally fails on Linux (glibc or musl libc), in a
+ VirtualBox VM with paravirtualization = Default or KVM, with ≥ 2 CPUs,
+ when "Nested VT-x/AMD-V" and "PAE/NX" are not both enabled.
+ Skip the test in this situation. */
+ if (is_running_under_virtualbox_kvm () && num_cpus () > 1)
+ {
+ fputs ("Skipping test: avoiding VirtualBox bug with KVM paravirtualization\n",
+ stderr);
+ return 77;
+ }
+
+ signal (SIGINT, sigint_handler);
+
+ sigset_t set;
+ sigemptyset (&set);
+ sigaddset (&set, SIGINT);
+
+ /* Check error handling. */
+ ASSERT (sigdelay (1729, &set, NULL) == -1);
+ ASSERT (errno == EINVAL);
+
+ /* Block SIGINT. */
+ ASSERT (sigdelay (SIG_BLOCK, &set, NULL) == 0);
+
+ /* Request a SIGINT signal from outside. */
+ char command[80];
+ intmax_t pid = getpid ();
+ sprintf (command, "sh -c 'sleep 1; kill -INT %"PRIdMAX"' &", pid);
+ ASSERT (system (command) == 0);
+
+ /* Wait. */
+ sleep (2);
+
+ /* The signal should not have arrived yet, because it is blocked. */
+ ASSERT (sigint_occurred == 0);
+
+ /* Unblock SIGINT. */
+ ASSERT (sigdelay (SIG_UNBLOCK, &set, NULL) == 0);
+
+ /* The signal should have arrived now. */
+ ASSERT (sigint_occurred == 1);
+
+ return test_exit_status;
+}
+
+#else
+
+/* On native Windows, getpid() values and the arguments that are passed to
+ the (Cygwin?) 'kill' program are not necessarily related. */
+
+int
+main ()
+{
+ fputs ("Skipping test: native Windows platform\n", stderr);
+ return 77;
+}
+
+#endif
--- /dev/null
+/* Test of sigdelay in a multi-threaded process.
+ Copyright (C) 2011-2026 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2026. */
+
+#include <config.h>
+
+/* Specification. */
+#include "sigdelay.h"
+
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "virtualbox.h"
+#include "macros.h"
+
+#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
+
+static pthread_t main_thread;
+static pthread_t killer_thread1;
+static pthread_t killer_thread2;
+
+static void *
+killer_thread1_func (_GL_UNUSED void *arg)
+{
+ sleep (1);
+ pthread_kill (main_thread, SIGINT);
+ return NULL;
+}
+
+static void *
+killer_thread2_func (_GL_UNUSED void *arg)
+{
+ sleep (1);
+ pthread_kill (pthread_self (), SIGINT);
+ return NULL;
+}
+
+static volatile int sigint_occurred;
+
+static void
+sigint_handler (_GL_UNUSED int sig)
+{
+ sigint_occurred++;
+}
+
+int
+main ()
+{
+ /* This test occasionally fails on Linux (glibc or musl libc), in a
+ VirtualBox VM with paravirtualization = Default or KVM, with ≥ 2 CPUs,
+ when "Nested VT-x/AMD-V" and "PAE/NX" are not both enabled.
+ Skip the test in this situation. */
+ if (is_running_under_virtualbox_kvm () && num_cpus () > 1)
+ {
+ fputs ("Skipping test: avoiding VirtualBox bug with KVM paravirtualization\n",
+ stderr);
+ return 77;
+ }
+
+ signal (SIGINT, sigint_handler);
+
+ sigset_t set;
+ sigemptyset (&set);
+ sigaddset (&set, SIGINT);
+
+ /* Check error handling. */
+ ASSERT (sigdelay (1729, &set, NULL) == -1);
+ ASSERT (errno == EINVAL);
+
+ /* Block SIGINT. */
+ ASSERT (sigdelay (SIG_BLOCK, &set, NULL) == 0);
+
+ /* Request a SIGINT signal from another thread. */
+ main_thread = pthread_self ();
+ ASSERT (pthread_create (&killer_thread1, NULL, killer_thread1_func, NULL)
+ == 0);
+
+ /* Wait. */
+ sleep (2);
+
+ /* The signal should not have arrived yet, because it is blocked. */
+ ASSERT (sigint_occurred == 0);
+
+ /* Unblock SIGINT. */
+ ASSERT (sigdelay (SIG_UNBLOCK, &set, NULL) == 0);
+
+ /* The signal should have arrived now. */
+ ASSERT (sigint_occurred == 1);
+
+ /* Request a SIGINT signal from another thread. */
+ ASSERT (pthread_create (&killer_thread2, NULL, killer_thread2_func, NULL)
+ == 0);
+
+ /* Block SIGINT. */
+ ASSERT (sigdelay (SIG_BLOCK, &set, NULL) == 0);
+
+ /* Wait. */
+ sleep (2);
+
+ /* The signal should not have arrived yet, because it is blocked. */
+ ASSERT (sigint_occurred == 1);
+
+ /* Unblock SIGINT. */
+ ASSERT (sigdelay (SIG_UNBLOCK, &set, NULL) == 0);
+
+ /* The signal should have arrived now. */
+ ASSERT (sigint_occurred == 2);
+
+ /* Clean up the threads. This avoids a "ThreadSanitizer: thread leak" warning
+ from "gcc -fsanitize=thread". */
+ ASSERT (pthread_join (killer_thread1, NULL) == 0);
+ ASSERT (pthread_join (killer_thread2, NULL) == 0);
+
+ return test_exit_status;
+}
+
+#else
+
+int
+main ()
+{
+ fputs ("Skipping test: POSIX threads not enabled\n", stderr);
+ return 77;
+}
+
+#endif
projects / thirdparty / gnulib.git / commitdiff
