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1 // Copyright 2015 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 <stdint.h> | |
6 | |
7 #include "base/logging.h" | |
8 #include "base/process/process_handle.h" | |
9 | |
10 namespace base { | |
11 | |
12 namespace { | |
13 uint32_t g_unique_id = kInvalidUniqueId; | |
14 | |
15 #if DCHECK_IS_ON() | |
16 // The process which set |g_unique_id|. | |
17 uint32_t g_procid; | |
18 #endif | |
19 } // namespace | |
20 | |
21 uint32_t GetUniqueIdForProcess() { | |
22 if (g_unique_id == kInvalidUniqueId) { | |
23 return static_cast<uint32_t>(GetCurrentProcId()); | |
danakj
2015/08/05 19:52:26
Is this branch basically for the browser process/o
rickyz (no longer on Chrome)
2015/08/13 23:16:55
Yeah, I think it ends up being just the browser pr
danakj
2015/09/15 18:36:32
This still really bothers me :/ It feels very uncl
| |
24 } | |
25 | |
26 // Make sure we are the same process that set |g_procid|. This check may have | |
27 // false negatives (if a process ID was reused) but should have no false | |
28 // positives. | |
29 DCHECK_EQ(static_cast<uint32_t>(GetCurrentProcId()), g_procid); | |
30 return g_unique_id; | |
31 } | |
32 | |
33 void SetUniqueIdForProcess(uint32_t unique_id) { | |
34 g_unique_id = unique_id; | |
danakj
2015/08/05 19:52:26
can you DCHECK_GT(unique_id, 0) ?
rickyz (no longer on Chrome)
2015/08/13 23:16:55
Done.
| |
35 #if DCHECK_IS_ON() | |
36 g_procid = static_cast<uint32_t>(GetCurrentProcId()); | |
37 #endif | |
38 } | |
39 | |
40 } // namespace base | |
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