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https://github.com/vortexgpgpu/vortex.git
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39 lines
No EOL
1.4 KiB
C++
39 lines
No EOL
1.4 KiB
C++
// Copyright © 2019-2023
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util.h"
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#include <string.h>
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// return file extension
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const char* fileExtension(const char* filepath) {
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const char *ext = strrchr(filepath, '.');
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if (ext == NULL || ext == filepath)
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return "";
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return ext + 1;
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}
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void* aligned_malloc(size_t size, size_t alignment) {
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// reserve margin for alignment and storing of unaligned address
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assert((alignment & (alignment - 1)) == 0); // Power of 2 alignment.
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size_t margin = (alignment-1) + sizeof(void*);
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void *unaligned_addr = malloc(size + margin);
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void **aligned_addr = (void**)((uintptr_t)(((uint8_t*)unaligned_addr) + margin) & ~(alignment-1));
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aligned_addr[-1] = unaligned_addr;
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return aligned_addr;
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}
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void aligned_free(void *ptr) {
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// retreive the stored unaligned address and use it to free the allocation
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void* unaligned_addr = ((void**)ptr)[-1];
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free(unaligned_addr);
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} |