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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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7841 RUNTIME_FUNCTION(MaybeObject*, Runtime_Math_tan) { | 7841 RUNTIME_FUNCTION(MaybeObject*, Runtime_Math_tan) { |
7842 SealHandleScope shs(isolate); | 7842 SealHandleScope shs(isolate); |
7843 ASSERT(args.length() == 1); | 7843 ASSERT(args.length() == 1); |
7844 isolate->counters()->math_tan()->Increment(); | 7844 isolate->counters()->math_tan()->Increment(); |
7845 | 7845 |
7846 CONVERT_DOUBLE_ARG_CHECKED(x, 0); | 7846 CONVERT_DOUBLE_ARG_CHECKED(x, 0); |
7847 return isolate->transcendental_cache()->Get(TranscendentalCache::TAN, x); | 7847 return isolate->transcendental_cache()->Get(TranscendentalCache::TAN, x); |
7848 } | 7848 } |
7849 | 7849 |
7850 | 7850 |
| 7851 RUNTIME_FUNCTION(MaybeObject*, Runtime_PopulateTrigonometricTable) { |
| 7852 HandleScope scope(isolate); |
| 7853 ASSERT(args.length() == 3); |
| 7854 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sin_table, 0); |
| 7855 CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, cos_table, 1); |
| 7856 CONVERT_SMI_ARG_CHECKED(samples, 2); |
| 7857 RUNTIME_ASSERT(sin_table->type() == kExternalDoubleArray); |
| 7858 RUNTIME_ASSERT(cos_table->type() == kExternalDoubleArray); |
| 7859 double* sin_buffer = reinterpret_cast<double*>( |
| 7860 JSArrayBuffer::cast(sin_table->buffer())->backing_store()); |
| 7861 double* cos_buffer = reinterpret_cast<double*>( |
| 7862 JSArrayBuffer::cast(cos_table->buffer())->backing_store()); |
| 7863 |
| 7864 static const double pi_half = 3.1415926535897932 / 2; |
| 7865 double interval = pi_half / samples; |
| 7866 for (int i = 0; i < samples + 1; i++) { |
| 7867 double sample = sin(i * interval); |
| 7868 sin_buffer[i] = sample; |
| 7869 cos_buffer[samples - i] = sample * interval; |
| 7870 } |
| 7871 |
| 7872 // Fill this to catch out of bound accesses when calculating Math.sin(pi/2). |
| 7873 sin_buffer[samples + 1] = sin(pi_half + interval); |
| 7874 cos_buffer[samples + 1] = cos(pi_half + interval) * interval; |
| 7875 |
| 7876 return isolate->heap()->undefined_value(); |
| 7877 } |
| 7878 |
| 7879 |
7851 RUNTIME_FUNCTION(MaybeObject*, Runtime_DateMakeDay) { | 7880 RUNTIME_FUNCTION(MaybeObject*, Runtime_DateMakeDay) { |
7852 SealHandleScope shs(isolate); | 7881 SealHandleScope shs(isolate); |
7853 ASSERT(args.length() == 2); | 7882 ASSERT(args.length() == 2); |
7854 | 7883 |
7855 CONVERT_SMI_ARG_CHECKED(year, 0); | 7884 CONVERT_SMI_ARG_CHECKED(year, 0); |
7856 CONVERT_SMI_ARG_CHECKED(month, 1); | 7885 CONVERT_SMI_ARG_CHECKED(month, 1); |
7857 | 7886 |
7858 return Smi::FromInt(isolate->date_cache()->DaysFromYearMonth(year, month)); | 7887 return Smi::FromInt(isolate->date_cache()->DaysFromYearMonth(year, month)); |
7859 } | 7888 } |
7860 | 7889 |
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14888 // Handle last resort GC and make sure to allow future allocations | 14917 // Handle last resort GC and make sure to allow future allocations |
14889 // to grow the heap without causing GCs (if possible). | 14918 // to grow the heap without causing GCs (if possible). |
14890 isolate->counters()->gc_last_resort_from_js()->Increment(); | 14919 isolate->counters()->gc_last_resort_from_js()->Increment(); |
14891 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, | 14920 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, |
14892 "Runtime::PerformGC"); | 14921 "Runtime::PerformGC"); |
14893 } | 14922 } |
14894 } | 14923 } |
14895 | 14924 |
14896 | 14925 |
14897 } } // namespace v8::internal | 14926 } } // namespace v8::internal |
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