| 1 | /* |
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| 2 | * Copyright 2019 WebAssembly Community Group participants |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | |
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| 17 | // |
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| 18 | // Allocation helpers |
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| 19 | // |
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| 20 | |
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| 21 | #ifndef wasm_support_alloc_h |
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| 22 | #define wasm_support_alloc_h |
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| 23 | |
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| 24 | #include <stdlib.h> |
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| 25 | |
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| 26 | #if defined(WIN32) || defined(_WIN32) |
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| 27 | #include <malloc.h> |
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| 28 | #endif |
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| 29 | |
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| 30 | namespace wasm { |
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| 31 | |
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| 32 | // An allocation of a specific size and a minimum alignment. Must be freed |
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| 33 | // with aligned_free. Returns nullptr on failure. |
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| 34 | inline void* aligned_malloc(size_t align, size_t size) { |
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| 35 | #if defined(WIN32) || defined(_WIN32) |
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| 36 | _set_errno(0); |
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| 37 | void* ret = _aligned_malloc(size, align); |
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| 38 | if (errno == ENOMEM) |
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| 39 | ret = nullptr; |
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| 40 | return ret; |
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| 41 | #elif defined(__APPLE__) || !defined(_ISOC11_SOURCE) |
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| 42 | void* ptr; |
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| 43 | int result = posix_memalign(&ptr, align, size); |
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| 44 | return result == 0 ? ptr : nullptr; |
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| 45 | #else |
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| 46 | return aligned_alloc(align, size); |
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| 47 | #endif |
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| 48 | } |
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| 49 | |
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| 50 | inline void aligned_free(void* ptr) { |
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| 51 | #if defined(WIN32) || defined(_WIN32) |
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| 52 | _aligned_free(ptr); |
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| 53 | #else |
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| 54 | free(ptr); |
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| 55 | #endif |
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| 56 | } |
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| 57 | |
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| 58 | } // namespace wasm |
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| 59 | |
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| 60 | #endif // wasm_support_alloc_h |
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| 61 | |
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