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This is a regression test to validate the functionality that was reported broken in #9071, where the kernel would spin attempting to cancel a stale timer.
29 lines
955 B
C++
29 lines
955 B
C++
/*
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* Copyright (c) 2021, Brian Gianforcaro <bgianf@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Time.h>
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#include <LibTest/TestCase.h>
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#include <unistd.h>
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// Regression test for issues #9071
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// See: https://github.com/SerenityOS/serenity/issues/9071
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TEST_CASE(regression_inifinite_loop)
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{
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constexpr auto hour_long_timer_value = Time::from_seconds(60 * 60);
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// Create an alarm timer significantly far into the future.
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auto previous_time = alarm(hour_long_timer_value.to_seconds());
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EXPECT_EQ(previous_time, 0u);
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// Update the alarm with a zero value before the previous timer expires.
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previous_time = alarm(0);
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EXPECT_EQ(previous_time, hour_long_timer_value.to_seconds());
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// Update the alarm with a zero value again, this shouldn't get stuck
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// in an infinite loop trying to cancel the previous timer in the kernel.
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previous_time = alarm(0);
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EXPECT_EQ(previous_time, 0u);
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}
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