GN: aix port along with linux_s390x, linux_ppc64 and linux_ppc64le support.

base/process/process_metrics.h

 // 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 routines for gathering resource statistics for processes
 // running on the system.
 
 #ifndef BASE_PROCESS_PROCESS_METRICS_H_
 #define BASE_PROCESS_PROCESS_METRICS_H_
 
@@ skipping 177 matching lines @@
   // the range of 0 to (100 * numCPUCores) everywhere.
   double GetPlatformIndependentCPUUsage();
 
   // Retrieves accounting information for all I/O operations performed by the
   // process.
   // If IO information is retrieved successfully, the function returns true
   // and fills in the IO_COUNTERS passed in. The function returns false
   // otherwise.
   bool GetIOCounters(IoCounters* io_counters) const;
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_AIX)
   // Returns the number of file descriptors currently open by the process, or
   // -1 on error.
   int GetOpenFdCount() const;
 
   // Returns the soft limit of file descriptors that can be opened by the
   // process, or -1 on error.
   int GetOpenFdSoftLimit() const;
-#endif  // defined(OS_LINUX)
+#endif  // defined(OS_LINUX) || defined(OS_AIX)
 
  private:
 #if !defined(OS_MACOSX) || defined(OS_IOS)
   explicit ProcessMetrics(ProcessHandle process);
 #else
   ProcessMetrics(ProcessHandle process, PortProvider* port_provider);
 #endif  // !defined(OS_MACOSX) || defined(OS_IOS)
 
-#if defined(OS_LINUX) || defined(OS_ANDROID)
+#if defined(OS_LINUX) || defined(OS_ANDROID) | defined(OS_AIX)
   bool GetWorkingSetKBytesStatm(WorkingSetKBytes* ws_usage) const;
 #endif
 
 #if defined(OS_CHROMEOS)
   bool GetWorkingSetKBytesTotmaps(WorkingSetKBytes *ws_usage) const;
 #endif
 
-#if defined(OS_MACOSX) || defined(OS_LINUX)
+#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_AIX)
   int CalculateIdleWakeupsPerSecond(uint64_t absolute_idle_wakeups);
 #endif
 
 #if defined(OS_WIN)
   win::ScopedHandle process_;
 #else
   ProcessHandle process_;
 #endif
 
   int processor_count_;
 
   // Used to store the previous times and CPU usage counts so we can
   // compute the CPU usage between calls.
   TimeTicks last_cpu_time_;
   int64_t last_system_time_;
 
-#if defined(OS_MACOSX) || defined(OS_LINUX)
+#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_AIX)
   // Same thing for idle wakeups.
   TimeTicks last_idle_wakeups_time_;
   uint64_t last_absolute_idle_wakeups_;
 #endif
 
 #if !defined(OS_IOS)
 #if defined(OS_MACOSX)
   // Queries the port provider if it's set.
   mach_port_t TaskForPid(ProcessHandle process) const;
 
@@ skipping 21 matching lines @@
 // Returns the maximum number of file descriptors that can be open by a process
 // at once. If the number is unavailable, a conservative best guess is returned.
 BASE_EXPORT size_t GetMaxFds();
 
 // Sets the file descriptor soft limit to |max_descriptors| or the OS hard
 // limit, whichever is lower.
 BASE_EXPORT void SetFdLimit(unsigned int max_descriptors);
 #endif  // defined(OS_POSIX)
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX) || \
-    defined(OS_ANDROID)
+    defined(OS_ANDROID) || defined(OS_AIX)
 // Data about system-wide memory consumption. Values are in KB. Available on
 // Windows, Mac, Linux, Android and Chrome OS.
 //
 // Total memory are available on all platforms that implement
 // GetSystemMemoryInfo(). Total/free swap memory are available on all platforms
 // except on Mac. Buffers/cached/active_anon/inactive_anon/active_file/
 // inactive_file/dirty/reclaimable/pswpin/pswpout/pgmajfault are available on
 // Linux/Android/Chrome OS. Shmem/slab/gem_objects/gem_size are Chrome OS only.
 // Speculative/file_backed/purgeable are Mac and iOS only.
 // Free is absent on Windows (see "avail_phys" below).
@@ skipping 12 matching lines @@
 
 #if defined(OS_WIN)
   // "This is the amount of physical memory that can be immediately reused
   // without having to write its contents to disk first. It is the sum of the
   // size of the standby, free, and zero lists." (MSDN).
   // Standby: not modified pages of physical ram (file-backed memory) that are
   // not actively being used.
   int avail_phys = 0;
 #endif
 
-#if defined(OS_LINUX) || defined(OS_ANDROID)
+#if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_AIX)
   // This provides an estimate of available memory as described here:
   // https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34e431b0ae398fc54ea69ff85ec700722c9da773
   // NOTE: this is ONLY valid in kernels 3.14 and up.  Its value will always
   // be 0 in earlier kernel versions.
   // Note: it includes _all_ file-backed memory (active + inactive).
   int available = 0;
 #endif
 
 #if !defined(OS_MACOSX)
   int swap_total = 0;
   int swap_free = 0;
 #endif
 
-#if defined(OS_ANDROID) || defined(OS_LINUX)
+#if defined(OS_ANDROID) || defined(OS_LINUX) || defined(OS_AIX)
   int buffers = 0;
   int cached = 0;
   int active_anon = 0;
   int inactive_anon = 0;
   int active_file = 0;
   int inactive_file = 0;
   int dirty = 0;
   int reclaimable = 0;
 
   // vmstats data.
   unsigned long pswpin = 0;
   unsigned long pswpout = 0;
   unsigned long pgmajfault = 0;
-#endif  // defined(OS_ANDROID) || defined(OS_LINUX)
+#endif  // defined(OS_ANDROID) || defined(OS_LINUX) || defined(OS_AIX)
 
 #if defined(OS_CHROMEOS)
   int shmem = 0;
   int slab = 0;
   // Gem data will be -1 if not supported.
   int gem_objects = -1;
   long long gem_size = -1;
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_MACOSX)
   int speculative = 0;
   int file_backed = 0;
   int purgeable = 0;
 #endif  // defined(OS_MACOSX)
 };
 
 // On Linux/Android/Chrome OS, system-wide memory consumption data is parsed
 // from /proc/meminfo and /proc/vmstat. On Windows/Mac, it is obtained using
 // system API calls.
 //
 // Fills in the provided |meminfo| structure. Returns true on success.
 // Exposed for memory debugging widget.
 BASE_EXPORT bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo);
 
 #endif  // defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX) ||
         // defined(OS_ANDROID)
 
-#if defined(OS_LINUX) || defined(OS_ANDROID)
+#if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_AIX)
 // Parse the data found in /proc/<pid>/stat and return the sum of the
 // CPU-related ticks.  Returns -1 on parse error.
 // Exposed for testing.
 BASE_EXPORT int ParseProcStatCPU(const std::string& input);
 
 // Get the number of threads of |process| as available in /proc/<pid>/stat.
 // This should be used with care as no synchronization with running threads is
 // done. This is mostly useful to guarantee being single-threaded.
 // Returns 0 on failure.
 BASE_EXPORT int GetNumberOfThreads(ProcessHandle process);
@@ skipping 92 matching lines @@
   SystemDiskInfo disk_info_;
 #endif
 #if defined(OS_CHROMEOS)
   SwapInfo swap_info_;
 #endif
 };
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_PROCESS_METRICS_H_