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46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Copyright 2013 Google Inc. All Rights Reserved.
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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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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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Size-checked memory allocation.
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*/
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#ifndef BROTLI_UTILS_UTILS_H_
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#define BROTLI_UTILS_UTILS_H_
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#include <assert.h>
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#include "./types.h"
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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/* This is the maximum memory amount that we will ever try to allocate. */
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#define BROTLI_MAX_ALLOCABLE_MEMORY (1ULL << 40)
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/* size-checking safe malloc/calloc: verify that the requested size is not too
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large, or return NULL. You don't need to call these for constructs like
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malloc(sizeof(foo)), but only if there's font-dependent size involved
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somewhere (like: malloc(decoded_size * sizeof(*something))). That's why this
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safe malloc() borrows the signature from calloc(), pointing at the dangerous
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underlying multiply involved.
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*/
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void* BrotliSafeMalloc(uint64_t nmemb, size_t size);
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#if defined(__cplusplus) || defined(c_plusplus)
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} /* extern "C" */
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#endif
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#endif /* BROTLI_UTILS_UTILS_H_ */
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