// Copyright (c) 2013 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // This file contains internal routines that are called by other files in // base/process/. #ifndef BASE_PROCESS_INTERNAL_AIX_H_ #define BASE_PROCESS_INTERNAL_AIX_H_ #include #include #include #include #include #include "base/files/file_path.h" namespace base { namespace internalAIX { // "/proc" extern const char kProcDir[]; // "psinfo" extern const char kStatFile[]; // Returns a FilePath to "/proc/pid". base::FilePath GetProcPidDir(pid_t pid); // Take a /proc directory entry named |d_name|, and if it is the directory for // a process, convert it to a pid_t. // Returns 0 on failure. // e.g. /proc/self/ will return 0, whereas /proc/1234 will return 1234. pid_t ProcDirSlotToPid(const char* d_name); // Reads /proc//stat into |buffer|. Returns true if the file can be read // and is non-empty. bool ReadProcStats(pid_t pid, std::string* buffer); // Takes |stats_data| and populates |proc_stats| with the values split by // spaces. Taking into account the 2nd field may, in itself, contain spaces. // Returns true if successful. bool ParseProcStats(const std::string& stats_data, std::vector* proc_stats); // Fields from /proc//psinfo. // If the ordering ever changes, carefully review functions that use these // values. // For AIX this is the bare minimum that we need. Most of the commented out // fields can still be extracted but currently none of these are required. enum ProcStatsFields { VM_COMM = 1, // Filename of executable, without parentheses. // VM_STATE = 2, // Letter indicating the state of the process. VM_PPID = 3, // PID of the parent. VM_PGRP = 4, // Process group id. // VM_UTIME = 13, // Time scheduled in user mode in clock ticks. // VM_STIME = 14, // Time scheduled in kernel mode in clock ticks. // VM_NUMTHREADS = 19, // Number of threads. // VM_STARTTIME = 21, // The time the process started in clock ticks. // VM_VSIZE = 22, // Virtual memory size in bytes. // VM_RSS = 23, // Resident Set Size in pages. }; // Reads the |field_num|th field from |proc_stats|. Returns 0 on failure. // This version does not handle the first 3 values, since the first value is // simply |pid|, and the next two values are strings. int64_t GetProcStatsFieldAsInt64(const std::vector& proc_stats, ProcStatsFields field_num); // Same as GetProcStatsFieldAsInt64(), but for size_t values. size_t GetProcStatsFieldAsSizeT(const std::vector& proc_stats, ProcStatsFields field_num); // Convenience wrapper around GetProcStatsFieldAsInt64(), ParseProcStats() and // ReadProcStats(). See GetProcStatsFieldAsInt64() for details. int64_t ReadProcStatsAndGetFieldAsInt64(pid_t pid, ProcStatsFields field_num); // Same as ReadProcStatsAndGetFieldAsInt64() but for size_t values. size_t ReadProcStatsAndGetFieldAsSizeT(pid_t pid, ProcStatsFields field_num); } // namespace internalAIX } // namespace base #endif // BASE_PROCESS_INTERNAL_AIX_H_