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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 82 // subsequent have their ids incremented from there | 82 // subsequent have their ids incremented from there |
| 83 static const pthread_t kNoThread = (pthread_t) 0; | 83 static const pthread_t kNoThread = (pthread_t) 0; |
| 84 | 84 |
| 85 | 85 |
| 86 double ceiling(double x) { | 86 double ceiling(double x) { |
| 87 return ceil(x); | 87 return ceil(x); |
| 88 } | 88 } |
| 89 | 89 |
| 90 | 90 |
| 91 static Mutex* limit_mutex = NULL; | 91 static Mutex* limit_mutex = NULL; |
| 92 void OS::Setup() { | 92 void OS::SetUp() { |
| 93 // Seed the random number generator. | 93 // Seed the random number generator. |
| 94 // Convert the current time to a 64-bit integer first, before converting it | 94 // Convert the current time to a 64-bit integer first, before converting it |
| 95 // to an unsigned. Going directly will cause an overflow and the seed to be | 95 // to an unsigned. Going directly will cause an overflow and the seed to be |
| 96 // set to all ones. The seed will be identical for different instances that | 96 // set to all ones. The seed will be identical for different instances that |
| 97 // call this setup code within the same millisecond. | 97 // call this setup code within the same millisecond. |
| 98 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()); | 98 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()); |
| 99 srandom(static_cast<unsigned int>(seed)); | 99 srandom(static_cast<unsigned int>(seed)); |
| 100 limit_mutex = CreateMutex(); | 100 limit_mutex = CreateMutex(); |
| 101 } | 101 } |
| 102 | 102 |
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| 791 } | 791 } |
| 792 | 792 |
| 793 | 793 |
| 794 void Sampler::Stop() { | 794 void Sampler::Stop() { |
| 795 ASSERT(IsActive()); | 795 ASSERT(IsActive()); |
| 796 SignalSender::RemoveActiveSampler(this); | 796 SignalSender::RemoveActiveSampler(this); |
| 797 SetActive(false); | 797 SetActive(false); |
| 798 } | 798 } |
| 799 | 799 |
| 800 } } // namespace v8::internal | 800 } } // namespace v8::internal |
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