TYPE3

[iec.git] / src / type3_AndroidCloud / anbox-master / external / process-cpp-minimal / include / core / posix / linux / proc / process / oom_score.h

diff --git a/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/include/core/posix/linux/proc/process/oom_score.h b/src/type3_AndroidCloud/anbox-master/external/process-cpp-minimal/include/core/posix/linux/proc/process/oom_score.h
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+/*
+ * Copyright © 2012-2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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_POSIX_LINUX_PROC_PROCESS_OOM_SCORE_H_
+#define CORE_POSIX_LINUX_PROC_PROCESS_OOM_SCORE_H_
+
+#include <core/posix/visibility.h>
+
+namespace core
+{
+namespace posix
+{
+class Process;
+namespace linux
+{
+namespace proc
+{
+namespace process
+{
+/**
+ * This file displays the current score that the kernel gives to this process
+ * for the purpose of selecting a process for the OOM-killer. A higher score
+ * means that the process is more likely to be selected by the OOM-killer. The
+ * basis for this score is the amount of memory used by the process, with
+ * increases (+) or decreases (-) for factors including:
+ *
+ *   - whether the process creates a lot of children using fork(2) (+);
+ *   - whether the process has been running a long time, or has used a lot of CPU time (-);
+ *   - whether the process has a low nice value (i.e., > 0) (+);
+ *   - whether the process is privileged (-); and
+ *   - whether the process is making direct hardware access (-).
+ *
+ * The oom_score also reflects the adjustment specified by the oom_score_adj or
+ * oom_adj setting for the process.
+ */
+struct CORE_POSIX_DLL_PUBLIC OomScore
+{
+    int value = 0; ///< Current OomScore as calculated by the kernel.
+};
+
+/**
+ * \brief Read the OomScore for a process instance.
+ * \throws std::runtime_error in case of errors.
+ * \param [in] process The process to read the score for.
+ * \param [out] score The destination to store the value in.
+ */
+CORE_POSIX_DLL_PUBLIC const posix::Process& operator>>(const posix::Process& process, OomScore& score);
+}
+}
+}
+}
+}
+#endif // CORE_POSIX_LINUX_PROC_PROCESS_OOM_SCORE_H_