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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/process_info.h" | |
| 6 | |
| 7 #include <sys/sysctl.h> | |
| 8 #include <sys/time.h> | |
| 9 #include <unistd.h> | |
| 10 | |
| 11 #include "base/basictypes.h" | |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "base/time/time.h" | |
| 14 | |
| 15 namespace { | |
| 16 | |
| 17 using base::Time; | |
| 18 | |
| 19 // Returns the process creation time, or NULL if an error occurred. | |
| 20 Time* ProcessCreationTimeInternal() { | |
| 21 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid() }; | |
| 22 size_t len = 0; | |
| 23 if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) < 0) | |
| 24 return NULL; | |
| 25 | |
| 26 scoped_ptr_malloc<struct kinfo_proc> | |
| 27 proc(static_cast<struct kinfo_proc*>(malloc(len))); | |
| 28 if (sysctl(mib, arraysize(mib), proc.get(), &len, NULL, 0) < 0) | |
| 29 return NULL; | |
| 30 return new Time(Time::FromTimeVal(proc->kp_proc.p_un.__p_starttime)); | |
| 31 } | |
| 32 | |
| 33 } // namespace | |
| 34 | |
| 35 namespace base { | |
| 36 | |
| 37 //static | |
| 38 const Time* CurrentProcessInfo::CreationTime() { | |
| 39 static Time* process_creation_time = ProcessCreationTimeInternal(); | |
| 40 return process_creation_time; | |
| 41 } | |
| 42 | |
| 43 } // namespace base | |
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