| // Copyright 2013 The Chromium Authors |
| // 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 <stddef.h> |
| #include <stdint.h> |
| #include <unistd.h> |
| #include <string> |
| #include <vector> |
| |
| #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/<pid>/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<std::string>* proc_stats); |
| |
| // Fields from /proc/<pid>/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<std::string>& proc_stats, |
| ProcStatsFields field_num); |
| |
| // Same as GetProcStatsFieldAsInt64(), but for size_t values. |
| size_t GetProcStatsFieldAsSizeT(const std::vector<std::string>& 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_ |