1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// The following is duplicated from base/process_utils.h. 6// We shouldn't link against C++ code in a setuid binary. 7 8#ifndef SANDBOX_LINUX_SUID_PROCESS_UTIL_H_ 9#define SANDBOX_LINUX_SUID_PROCESS_UTIL_H_ 10 11#include <stdbool.h> 12#include <sys/types.h> 13 14#include "base/base_export.h" 15 16// This adjusts /proc/process/oom_score_adj so the Linux OOM killer 17// will prefer certain process types over others. The range for the 18// adjustment is [-1000, 1000], with [0, 1000] being user accessible. 19// 20// If the Linux system isn't new enough to use oom_score_adj, then we 21// try to set the older oom_adj value instead, scaling the score to 22// the required range of [0, 15]. This may result in some aliasing of 23// values, of course. 24BASE_EXPORT bool AdjustOOMScore(pid_t process, int score); 25 26// This adjusts /sys/kernel/mm/chromeos-low_mem/margin so that 27// the kernel notifies us that we are low on memory when less than 28// |margin_mb| megabytes are available. Setting |margin_mb| to -1 29// turns off low memory notification. 30BASE_EXPORT bool AdjustLowMemoryMargin(int64_t margin_mb); 31 32#endif // SANDBOX_LINUX_SUID_PROCESS_UTIL_H_ 33