cross_process_sync.h
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/*
* Copyright © 2013 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3,
* as published by the Free Software Foundation.
*
* 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 <http://www.gnu.org/licenses/>.
*
* Authored by: Thomas Voss <thomas.voss@canonical.com>
*/
#ifndef CORE_TESTING_CROSS_PROCESS_SYNC_H_
#define CORE_TESTING_CROSS_PROCESS_SYNC_H_
#include <core/posix/visibility.h>
#include <cstdint>
#include <chrono>
#include <stdexcept>
namespace core
{
namespace testing
{
class CORE_POSIX_DLL_PUBLIC CrossProcessSync
{
public:
struct Error
{
Error() = delete;
~Error() = delete;
struct Timeout : public std::runtime_error
{
Timeout() : std::runtime_error("Timeout while waiting for event to happen.")
{
}
};
};
CrossProcessSync();
CrossProcessSync(const CrossProcessSync& rhs);
~CrossProcessSync() noexcept;
CrossProcessSync& operator=(const CrossProcessSync& rhs);
void try_signal_ready_for(const std::chrono::milliseconds& duration);
std::uint32_t wait_for_signal_ready_for(const std::chrono::milliseconds& duration);
private:
int fds[2];
std::uint32_t counter;
};
}
}
#endif // CORE_TESTING_CROSS_PROCESS_SYNC_H_
core::testing::CrossProcessSync
A cross-process synchronization primitive that supports simple wait-condition-like scenarios.
Definition: cross_process_sync.h:36
visibility.h
core::testing::CrossProcessSync::Error::Timeout::Timeout
Timeout()
Definition: cross_process_sync.h:49
CORE_POSIX_DLL_PUBLIC
#define CORE_POSIX_DLL_PUBLIC
Definition: visibility.h:26
core
Definition: child_process.h:31
core::testing::CrossProcessSync::Error
Definition: cross_process_sync.h:39
core::testing::CrossProcessSync::Error::Timeout
Thrown if any of the *_for functions times out.
Definition: cross_process_sync.h:47