1*bf42a786SJoseph Huber //===-- GPU Implementation of realloc -------------------------------------===// 2*bf42a786SJoseph Huber // 3*bf42a786SJoseph Huber // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*bf42a786SJoseph Huber // See https://llvm.org/LICENSE.txt for license information. 5*bf42a786SJoseph Huber // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*bf42a786SJoseph Huber // 7*bf42a786SJoseph Huber //===----------------------------------------------------------------------===// 8*bf42a786SJoseph Huber 9*bf42a786SJoseph Huber #include "src/stdlib/realloc.h" 10*bf42a786SJoseph Huber 11*bf42a786SJoseph Huber #include "src/__support/GPU/allocator.h" 12*bf42a786SJoseph Huber #include "src/__support/common.h" 13*bf42a786SJoseph Huber #include "src/__support/macros/config.h" 14*bf42a786SJoseph Huber #include "src/string/memory_utils/inline_memcpy.h" 15*bf42a786SJoseph Huber 16*bf42a786SJoseph Huber namespace LIBC_NAMESPACE_DECL { 17*bf42a786SJoseph Huber 18*bf42a786SJoseph Huber LLVM_LIBC_FUNCTION(void *, realloc, (void *ptr, size_t size)) { 19*bf42a786SJoseph Huber if (ptr == nullptr) 20*bf42a786SJoseph Huber return gpu::allocate(size); 21*bf42a786SJoseph Huber 22*bf42a786SJoseph Huber void *newmem = gpu::allocate(size); 23*bf42a786SJoseph Huber if (newmem == nullptr) 24*bf42a786SJoseph Huber return nullptr; 25*bf42a786SJoseph Huber 26*bf42a786SJoseph Huber // This will copy garbage if it goes beyond the old allocation size. 27*bf42a786SJoseph Huber inline_memcpy(newmem, ptr, size); 28*bf42a786SJoseph Huber gpu::deallocate(ptr); 29*bf42a786SJoseph Huber return newmem; 30*bf42a786SJoseph Huber } 31*bf42a786SJoseph Huber 32*bf42a786SJoseph Huber } // namespace LIBC_NAMESPACE_DECL 33