| 1 | //===-- GPU Implementation of realloc -------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/stdlib/realloc.h" |
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| 10 | |
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| 11 | #include "src/__support/GPU/allocator.h" |
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| 12 | #include "src/__support/common.h" |
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| 13 | #include "src/__support/macros/config.h" |
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| 14 | #include "src/string/memory_utils/inline_memcpy.h" |
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| 15 | |
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| 16 | namespace LIBC_NAMESPACE_DECL { |
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| 17 | |
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| 18 | LLVM_LIBC_FUNCTION(void *, realloc, (void *ptr, size_t size)) { |
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| 19 | if (ptr == nullptr) |
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| 20 | return gpu::allocate(size); |
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| 21 | |
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| 22 | void *newmem = gpu::allocate(size); |
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| 23 | if (newmem == nullptr) |
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| 24 | return nullptr; |
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| 25 | |
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| 26 | // This will copy garbage if it goes beyond the old allocation size. |
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| 27 | inline_memcpy(newmem, ptr, size); |
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| 28 | gpu::deallocate(ptr); |
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| 29 | return newmem; |
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| 30 | } |
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| 31 | |
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| 32 | } // namespace LIBC_NAMESPACE_DECL |
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| 33 | |
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