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Polling in ParallelChildCrashesDontHang test

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Instead of (arbitrarily) wait 1s for the child process to terminate, the
parent now polls the child process every 100ms to check if it's
terminated, and it does so for a much longer total time of 10s.

This implementation ensures correct check for slower architectures, and
fast success for faster ones.

Change-Id: I2ff38458bf747de5b74268a4e22fd6164450419b
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3876346
Reviewed-by: Mike Frysinger <vapier@chromium.org>
This commit is contained in:
Iacopo Colonnelli 2022-09-08 09:38:48 +02:00 committed by Mike Frysinger
parent 4febb34583
commit e059dad5ea
1 changed files with 16 additions and 2 deletions
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18
src/client/linux/handler/exception_handler_unittest.cc
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@ -305,8 +305,22 @@ TEST(ExceptionHandlerTest, ParallelChildCrashesDontHang) {
}
}
// Wait a while until the child should have crashed.
usleep(1000000);
// Poll the child to see if it crashed.
int status, wp_pid;
for (int i = 0; i < 100; i++) {
wp_pid = HANDLE_EINTR(waitpid(child, &status, WNOHANG));
ASSERT_NE(-1, wp_pid);
if (wp_pid > 0) {
ASSERT_TRUE(WIFSIGNALED(status));
// If the child process terminated by itself,
// it will have returned SIGSEGV.
ASSERT_EQ(SIGSEGV, WTERMSIG(status));
return;
} else {
usleep(100000);
}
}
// Kill the child if it is still running.
kill(child, SIGKILL);