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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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