Port some of the base system to FreeBSD. Extracted from...

base/process_util.h

 // Copyright (c) 2009 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/namespace contains utility functions for enumerating, ending and
 // computing statistics of processes.
 
 #ifndef BASE_PROCESS_UTIL_H_
 #define BASE_PROCESS_UTIL_H_
 
 #include "base/basictypes.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <tlhelp32.h>
-#elif defined(OS_LINUX)
+#elif defined(OS_MACOSX)
+// kinfo_proc is defined in <sys/sysctl.h>, but this forward declaration
+// is sufficient for the vector<> below.
+struct kinfo_proc;
+#elif defined(OS_POSIX)
 #include <dirent.h>
 #include <limits.h>
 #include <sys/types.h>
 #endif
 
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 16 matching lines @@
   unsigned long long WriteOperationCount;
   unsigned long long OtherOperationCount;
   unsigned long long ReadTransferCount;
   unsigned long long WriteTransferCount;
   unsigned long long OtherTransferCount;
 };
 
 #include "base/file_descriptor_shuffle.h"
 #endif
 
-#if defined(OS_MACOSX)
-struct kinfo_proc;
-#endif
-
 namespace base {
 
 // A minimalistic but hopefully cross-platform set of exit codes.
 // Do not change the enumeration values or you will break third-party
 // installers.
 enum {
   PROCESS_END_NORMAL_TERMINATON = 0,
   PROCESS_END_KILLED_BY_USER    = 1,
   PROCESS_END_PROCESS_WAS_HUNG  = 2
 };
@@ skipping 199 matching lines @@
 
   // Initializes a PROCESSENTRY32 data structure so that it's ready for
   // use with Process32First/Process32Next.
   void InitProcessEntry(ProcessEntry* entry);
 
   std::wstring executable_name_;
 
 #if defined(OS_WIN)
   HANDLE snapshot_;
   bool started_iteration_;
-#elif defined(OS_LINUX)
-  DIR *procfs_dir_;
 #elif defined(OS_MACOSX)
   std::vector<kinfo_proc> kinfo_procs_;
   size_t index_of_kinfo_proc_;
+#elif defined(OS_POSIX)
+  DIR *procfs_dir_;
 #endif
   ProcessEntry entry_;
   const ProcessFilter* filter_;
 
   DISALLOW_EVIL_CONSTRUCTORS(NamedProcessIterator);
 };
 
 // Working Set (resident) memory usage broken down by
 // priv (private): These pages (kbytes) cannot be shared with any other process.
 // shareable:      These pages (kbytes) can be shared with other processes under
@@ skipping 110 matching lines @@
 // overflow. Has no effect if the OS doesn't provide the necessary facility.
 void EnableTerminationOnHeapCorruption();
 
 // If supported on the platform, and the user has sufficent rights, increase
 // the current process's scheduling priority to a high priority.
 void RaiseProcessToHighPriority();
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_UTIL_H_