48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef GVISOR_TEST_UTIL_SAVE_UTIL_H_
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#define GVISOR_TEST_UTIL_SAVE_UTIL_H_
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namespace gvisor {
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namespace testing {
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// Disable save prevents saving while the given function executes.
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//
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// This lasts the duration of the object, unless reset is called.
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class DisableSave {
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public:
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DisableSave();
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~DisableSave();
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DisableSave(DisableSave const&) = delete;
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DisableSave(DisableSave&&) = delete;
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DisableSave& operator=(DisableSave const&) = delete;
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DisableSave& operator=(DisableSave&&) = delete;
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// reset allows saves to continue, and is called implicitly by the destructor.
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// It may be called multiple times safely, but is not thread-safe.
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void reset();
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private:
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bool reset_ = false;
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};
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// May perform a co-operative save cycle.
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//
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// errno is guaranteed to be preserved.
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void MaybeSave();
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} // namespace testing
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} // namespace gvisor
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#endif // GVISOR_TEST_UTIL_SAVE_UTIL_H_
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