TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / external / process-cpp-minimal / src / core / testing / cross_process_sync.cpp

diff --git a/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/testing/cross_process_sync.cpp b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/testing/cross_process_sync.cpp
new file mode 100644 (file)
index 0000000..cc03389
--- /dev/null
+++ b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/src/core/testing/cross_process_sync.cpp
@@ -0,0 +1,99 @@
+/*
+ * 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>
+ */
+
+#include <core/testing/cross_process_sync.h>
+
+#include <system_error>
+
+#include <poll.h>
+#include <unistd.h>
+
+namespace
+{
+const int read_fd = 0;
+const int write_fd = 1;
+}
+
+core::testing::CrossProcessSync::CrossProcessSync() : counter(0)
+{
+    if (::pipe(fds) < 0)
+        throw std::system_error(errno, std::system_category());
+}
+
+core::testing::CrossProcessSync::CrossProcessSync(const CrossProcessSync& rhs) : counter(rhs.counter)
+{
+    fds[0] = ::dup(rhs.fds[0]);
+    fds[1] = ::dup(rhs.fds[1]);
+}
+
+core::testing::CrossProcessSync::~CrossProcessSync() noexcept
+{
+    ::close(fds[0]);
+    ::close(fds[1]);
+}
+
+core::testing::CrossProcessSync& core::testing::CrossProcessSync::operator=(const core::testing::CrossProcessSync& rhs)
+{
+    ::close(fds[0]);
+    ::close(fds[1]);
+    fds[0] = ::dup(rhs.fds[0]);
+    fds[1] = ::dup(rhs.fds[1]);
+
+    counter = rhs.counter;
+
+    return *this;
+}
+
+void core::testing::CrossProcessSync::try_signal_ready_for(const std::chrono::milliseconds& duration)
+{
+    static const short empty_revents = 0;
+    pollfd poll_fd[1] = { { fds[write_fd], POLLOUT, empty_revents } };
+    int rc = -1;
+
+    if ((rc = ::poll(poll_fd, 1, duration.count())) < 0)
+        throw std::system_error(errno, std::system_category());
+    else if (rc == 0)
+        throw Error::Timeout{};
+
+    static const std::uint32_t value = 1;
+    if (sizeof(value) != write(fds[write_fd], std::addressof(value), sizeof(value)))
+        throw std::system_error(errno, std::system_category());
+}
+
+std::uint32_t core::testing::CrossProcessSync::wait_for_signal_ready_for(const std::chrono::milliseconds& duration)
+{
+    static const short empty_revents = 0;
+    pollfd poll_fd[1] = { { fds[read_fd], POLLIN, empty_revents } };
+    int rc = -1;
+
+    if ((rc = ::poll(poll_fd, 1, duration.count())) < 0)
+        throw std::system_error(errno, std::system_category());
+    else if (rc == 0)
+        throw Error::Timeout{};
+
+    std::uint32_t value = 0;
+    if (sizeof(value) != read(fds[read_fd], std::addressof(value), sizeof(value)))
+        throw std::system_error(errno, std::system_category());
+
+    if (value != 1)
+        throw std::system_error(errno, std::system_category());
+
+    counter += value;
+
+    return counter;
+}