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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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