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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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