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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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| 72 return -0.0; | 72 return -0.0; |
| 73 } else { | 73 } else { |
| 74 return ceil(x); | 74 return ceil(x); |
| 75 } | 75 } |
| 76 } | 76 } |
| 77 | 77 |
| 78 | 78 |
| 79 static Mutex* limit_mutex = NULL; | 79 static Mutex* limit_mutex = NULL; |
| 80 | 80 |
| 81 | 81 |
| 82 void OS::Setup() { | 82 void OS::SetUp() { |
| 83 // Seed the random number generator. | 83 // Seed the random number generator. |
| 84 // Convert the current time to a 64-bit integer first, before converting it | 84 // Convert the current time to a 64-bit integer first, before converting it |
| 85 // to an unsigned. Going directly can cause an overflow and the seed to be | 85 // to an unsigned. Going directly can cause an overflow and the seed to be |
| 86 // set to all ones. The seed will be identical for different instances that | 86 // set to all ones. The seed will be identical for different instances that |
| 87 // call this setup code within the same millisecond. | 87 // call this setup code within the same millisecond. |
| 88 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()); | 88 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()); |
| 89 srandom(static_cast<unsigned int>(seed)); | 89 srandom(static_cast<unsigned int>(seed)); |
| 90 limit_mutex = CreateMutex(); | 90 limit_mutex = CreateMutex(); |
| 91 } | 91 } |
| 92 | 92 |
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| 873 | 873 |
| 874 | 874 |
| 875 void Sampler::Stop() { | 875 void Sampler::Stop() { |
| 876 ASSERT(IsActive()); | 876 ASSERT(IsActive()); |
| 877 SignalSender::RemoveActiveSampler(this); | 877 SignalSender::RemoveActiveSampler(this); |
| 878 SetActive(false); | 878 SetActive(false); |
| 879 } | 879 } |
| 880 | 880 |
| 881 | 881 |
| 882 } } // namespace v8::internal | 882 } } // namespace v8::internal |
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