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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 #ifndef CHROME_APP_NACL_FORK_DELEGATE_LINUX_H_ | |
6 #define CHROME_APP_NACL_FORK_DELEGATE_LINUX_H_ | |
7 | |
8 #include <string> | |
9 #include <vector> | |
10 | |
11 #include "base/basictypes.h" | |
12 #include "base/compiler_specific.h" | |
13 #include "content/public/common/zygote_fork_delegate_linux.h" | |
14 | |
15 // The NaClForkDelegate is created during Chrome linux zygote | |
16 // initialization, and provides "fork()" functionality with | |
17 // NaCl specific process characteristics (specifically address | |
18 // space layout) as an alternative to forking the zygote. | |
19 // A new delegate is passed in as an argument to ZygoteMain(). | |
20 class NaClForkDelegate : public content::ZygoteForkDelegate { | |
21 public: | |
22 NaClForkDelegate(); | |
23 virtual ~NaClForkDelegate(); | |
24 | |
25 virtual void Init(int sandboxdesc) OVERRIDE; | |
26 virtual void InitialUMA(std::string* uma_name, | |
27 int* uma_sample, | |
28 int* uma_boundary_value) OVERRIDE; | |
29 virtual bool CanHelp(const std::string& process_type, std::string* uma_name, | |
30 int* uma_sample, int* uma_boundary_value) OVERRIDE; | |
31 virtual pid_t Fork(const std::vector<int>& fds) OVERRIDE; | |
32 virtual bool AckChild(int fd, | |
33 const std::string& channel_switch) OVERRIDE; | |
34 | |
35 private: | |
36 // These values are reported via UMA and hence they become permanent | |
37 // constants. Old values cannot be reused, only new ones added. | |
38 enum NaClHelperStatus { | |
39 kNaClHelperUnused = 0, | |
40 kNaClHelperMissing = 1, | |
41 kNaClHelperBootstrapMissing = 2, | |
42 kNaClHelperValgrind = 3, | |
43 kNaClHelperLaunchFailed = 4, | |
44 kNaClHelperAckFailed = 5, | |
45 kNaClHelperSuccess = 6, | |
46 kNaClHelperStatusBoundary // Must be one greater than highest value used. | |
47 }; | |
48 | |
49 NaClHelperStatus status_; | |
50 int fd_; | |
51 }; | |
52 | |
53 #endif // CHROME_APP_NACL_FORK_DELEGATE_LINUX_H_ | |
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