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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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76 // Seed the random number generator. | 76 // Seed the random number generator. |
77 // Convert the current time to a 64-bit integer first, before converting it | 77 // Convert the current time to a 64-bit integer first, before converting it |
78 // to an unsigned. Going directly can cause an overflow and the seed to be | 78 // to an unsigned. Going directly can cause an overflow and the seed to be |
79 // set to all ones. The seed will be identical for different instances that | 79 // set to all ones. The seed will be identical for different instances that |
80 // call this setup code within the same millisecond. | 80 // call this setup code within the same millisecond. |
81 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()); | 81 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()); |
82 srandom(static_cast<unsigned int>(seed)); | 82 srandom(static_cast<unsigned int>(seed)); |
83 } | 83 } |
84 | 84 |
85 | 85 |
86 FILE* OS::FOpen(const char* path, const char* mode) { | |
87 return fopen(path, mode); | |
88 } | |
89 | |
90 | |
91 void OS::Print(const char* format, ...) { | |
92 va_list args; | |
93 va_start(args, format); | |
94 VPrint(format, args); | |
95 va_end(args); | |
96 } | |
97 | |
98 | |
99 void OS::VPrint(const char* format, va_list args) { | |
100 vprintf(format, args); | |
101 } | |
102 | |
103 | |
104 void OS::PrintError(const char* format, ...) { | |
105 va_list args; | |
106 va_start(args, format); | |
107 VPrintError(format, args); | |
108 va_end(args); | |
109 } | |
110 | |
111 | |
112 void OS::VPrintError(const char* format, va_list args) { | |
113 vfprintf(stderr, format, args); | |
114 } | |
115 | |
116 | |
117 int OS::SNPrintF(Vector<char> str, const char* format, ...) { | |
118 va_list args; | |
119 va_start(args, format); | |
120 int result = VSNPrintF(str, format, args); | |
121 va_end(args); | |
122 return result; | |
123 } | |
124 | |
125 | |
126 int OS::VSNPrintF(Vector<char> str, | |
127 const char* format, | |
128 va_list args) { | |
129 int n = vsnprintf(str.start(), str.length(), format, args); | |
130 if (n < 0 || n >= str.length()) { | |
131 str[str.length() - 1] = '\0'; | |
132 return -1; | |
133 } else { | |
134 return n; | |
135 } | |
136 } | |
137 | |
138 | |
139 char* OS::StrChr(char* str, int c) { | |
140 return strchr(str, c); | |
141 } | |
142 | |
143 | |
144 void OS::StrNCpy(Vector<char> dest, const char* src, size_t n) { | |
145 strncpy(dest.start(), src, n); | |
146 } | |
147 | |
148 | |
149 double OS::nan_value() { | 86 double OS::nan_value() { |
150 return NAN; | 87 return NAN; |
151 } | 88 } |
152 | 89 |
153 | 90 |
154 int OS::ActivationFrameAlignment() { | 91 int OS::ActivationFrameAlignment() { |
155 // 16 byte alignment on FreeBSD | 92 // 16 byte alignment on FreeBSD |
156 return 16; | 93 return 16; |
157 } | 94 } |
158 | 95 |
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693 } | 630 } |
694 | 631 |
695 // This sampler is no longer the active sampler. | 632 // This sampler is no longer the active sampler. |
696 active_sampler_ = NULL; | 633 active_sampler_ = NULL; |
697 active_ = false; | 634 active_ = false; |
698 } | 635 } |
699 | 636 |
700 #endif // ENABLE_LOGGING_AND_PROFILING | 637 #endif // ENABLE_LOGGING_AND_PROFILING |
701 | 638 |
702 } } // namespace v8::internal | 639 } } // namespace v8::internal |
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