Port parts of base/process_util to Linux.

base/process_util_posix.cc

 // Copyright (c) 2006-2008 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.
 
 #include "base/process_util.h"
 
 #include <sys/types.h>
 #include <unistd.h>
 
 #include "base/basictypes.h"
+#include "base/sys_info.h"
 
 namespace process_util {
 
 int GetCurrentProcId() {
   return getpid();
 }
 
 ProcessHandle GetCurrentProcessHandle() {
   return GetCurrentProcId();
 }
 
 int GetProcId(ProcessHandle process) {
   return process;
 }
 
+ProcessMetrics::ProcessMetrics(ProcessHandle process) : process_(process),
+                                                        last_time_(0),
+                                                        last_system_time_(0) {
+  processor_count_ = base::SysInfo::NumberOfProcessors();
+}
+
+// static
+ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
+  return new ProcessMetrics(process);
+}
+
+ProcessMetrics::~ProcessMetrics() { }
+
 void EnableTerminationOnHeapCorruption() {
   // On POSIX, there nothing to do AFAIK.
 }
 
 void RaiseProcessToHighPriority() {
   // On POSIX, we don't actually do anything here.  We could try to nice() or
   // setpriority() or sched_getscheduler, but these all require extra rights.
 }
 
 }  // namespace process_util