1 files changed, 90 insertions, 0 deletions
diff --git a/externals/breakpad/src/third_party/lss/tests/setitimer.c b/externals/breakpad/src/third_party/lss/tests/setitimer.c
new file mode 100644
index 0000000000..dd2ccfe5c3
--- /dev/null
+++ b/externals/breakpad/src/third_party/lss/tests/setitimer.c
@@ -0,0 +1,90 @@
+/* Copyright 2022 Google LLC
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google LLC nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "test_skel.h"
+
+int main(int argc, char *argv[]) {
+  // We need an invalid timer value. The assert()'s below should
+  // be static asserts but it is not avalible in older C versions.
+#define kInvalidTimer 9999
+  assert(kInvalidTimer != ITIMER_REAL);
+  assert(kInvalidTimer != ITIMER_VIRTUAL);
+  assert(kInvalidTimer != ITIMER_PROF);
+
+  // Invalid timer returns EINVAL.
+  assert(sys_setitimer(kInvalidTimer, NULL, NULL) == -1);
+  assert(errno == EINVAL);
+
+  const int kSignal = SIGALRM;
+  const size_t kSigsetSize = sizeof(struct kernel_sigset_t);
+
+  // Block SIGALRM.
+  struct kernel_sigset_t sigalarm_only;
+  struct kernel_sigset_t old_sigset;
+  assert(sys_sigemptyset(&sigalarm_only) == 0);
+  assert(sys_sigaddset(&sigalarm_only, kSignal) == 0);
+  assert(sys_rt_sigprocmask(SIG_BLOCK, &sigalarm_only, &old_sigset,
+                            kSigsetSize) == 0);
+
+  // Set up a real time timer.
+  struct kernel_itimerval new_itimer = {};
+  const long kIntervalUSec = 123;
+  new_itimer.it_interval.tv_sec = 0;
+  new_itimer.it_interval.tv_usec = kIntervalUSec;
+  new_itimer.it_value = new_itimer.it_interval;
+  assert(sys_setitimer(ITIMER_REAL, &new_itimer, NULL) == 0);
+
+  // Wait for alarm.
+  struct timespec timeout;
+  const unsigned long kNanoSecsPerSec = 1000000000;
+  const unsigned long kNanoSecsPerMicroSec = 1000;
+
+  // Use a timeout 3 times of the timer interval.
+  unsigned long duration_ns = kIntervalUSec * kNanoSecsPerMicroSec * 3;
+  timeout.tv_sec = duration_ns / kNanoSecsPerSec ;
+  timeout.tv_nsec = duration_ns % kNanoSecsPerSec;
+
+  int sig;
+  do {
+    sig = sys_sigtimedwait(&sigalarm_only, NULL, &timeout);
+  } while (sig == -1 && errno == EINTR);
+  assert(sig == kSignal);
+
+  // Disable timer, check saving of old timer value.
+  struct kernel_itimerval empty_itimer = {};
+  struct kernel_itimerval old_itimer;
+  empty_itimer.it_interval.tv_sec = 0;
+  empty_itimer.it_interval.tv_usec = 0;
+  empty_itimer.it_value = empty_itimer.it_interval;
+
+  assert(sys_setitimer(ITIMER_REAL, &empty_itimer, &old_itimer) == 0);
+  assert(kernel_timeval_eq(&old_itimer.it_interval, &new_itimer.it_interval));
+
+  return 0;
+}