Mercurial > hgrepos > Python2 > PyMuPDF
diff mupdf-source/thirdparty/brotli/c/enc/memory.h @ 2:b50eed0cc0ef upstream
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
The directory name has changed: no version number in the expanded directory now.
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Mon, 15 Sep 2025 11:43:07 +0200 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mupdf-source/thirdparty/brotli/c/enc/memory.h Mon Sep 15 11:43:07 2025 +0200 @@ -0,0 +1,131 @@ +/* Copyright 2016 Google Inc. All Rights Reserved. + + Distributed under MIT license. + See file LICENSE for detail or copy at https://opensource.org/licenses/MIT +*/ + +/* Macros for memory management. */ + +#ifndef BROTLI_ENC_MEMORY_H_ +#define BROTLI_ENC_MEMORY_H_ + +#include <string.h> /* memcpy */ + +#include <brotli/types.h> + +#include "../common/platform.h" + +#if defined(__cplusplus) || defined(c_plusplus) +extern "C" { +#endif + +#if !defined(BROTLI_ENCODER_CLEANUP_ON_OOM) && \ + !defined(BROTLI_ENCODER_EXIT_ON_OOM) +#define BROTLI_ENCODER_EXIT_ON_OOM +#endif + +#if !defined(BROTLI_ENCODER_EXIT_ON_OOM) +#if defined(BROTLI_EXPERIMENTAL) +#define BROTLI_ENCODER_MEMORY_MANAGER_SLOTS (48*1024) +#else /* BROTLI_EXPERIMENTAL */ +#define BROTLI_ENCODER_MEMORY_MANAGER_SLOTS 256 +#endif /* BROTLI_EXPERIMENTAL */ +#else /* BROTLI_ENCODER_EXIT_ON_OOM */ +#define BROTLI_ENCODER_MEMORY_MANAGER_SLOTS 0 +#endif /* BROTLI_ENCODER_EXIT_ON_OOM */ + +typedef struct MemoryManager { + brotli_alloc_func alloc_func; + brotli_free_func free_func; + void* opaque; +#if !defined(BROTLI_ENCODER_EXIT_ON_OOM) + BROTLI_BOOL is_oom; + size_t perm_allocated; + size_t new_allocated; + size_t new_freed; + void* pointers[BROTLI_ENCODER_MEMORY_MANAGER_SLOTS]; +#endif /* BROTLI_ENCODER_EXIT_ON_OOM */ +} MemoryManager; + +BROTLI_INTERNAL void BrotliInitMemoryManager( + MemoryManager* m, brotli_alloc_func alloc_func, brotli_free_func free_func, + void* opaque); + +BROTLI_INTERNAL void* BrotliAllocate(MemoryManager* m, size_t n); +#define BROTLI_ALLOC(M, T, N) \ + ((N) > 0 ? ((T*)BrotliAllocate((M), (N) * sizeof(T))) : NULL) + +BROTLI_INTERNAL void BrotliFree(MemoryManager* m, void* p); +#define BROTLI_FREE(M, P) { \ + BrotliFree((M), (P)); \ + P = NULL; \ +} + +#if defined(BROTLI_ENCODER_EXIT_ON_OOM) +#define BROTLI_IS_OOM(M) (!!0) +#else /* BROTLI_ENCODER_EXIT_ON_OOM */ +#define BROTLI_IS_OOM(M) (!!(M)->is_oom) +#endif /* BROTLI_ENCODER_EXIT_ON_OOM */ + +/* +BROTLI_IS_NULL is a fake check, BROTLI_IS_OOM does the heavy lifting. +The only purpose of it is to explain static analyzers the state of things. +NB: use ONLY together with BROTLI_IS_OOM + AND ONLY for allocations in the current scope. + */ +#if defined(__clang_analyzer__) && !defined(BROTLI_ENCODER_EXIT_ON_OOM) +#define BROTLI_IS_NULL(A) ((A) == nullptr) +#else /* defined(__clang_analyzer__) */ +#define BROTLI_IS_NULL(A) (!!0) +#endif /* defined(__clang_analyzer__) */ + +BROTLI_INTERNAL void BrotliWipeOutMemoryManager(MemoryManager* m); + +/* +Dynamically grows array capacity to at least the requested size +M: MemoryManager +T: data type +A: array +C: capacity +R: requested size +*/ +#define BROTLI_ENSURE_CAPACITY(M, T, A, C, R) { \ + if (C < (R)) { \ + size_t _new_size = (C == 0) ? (R) : C; \ + T* new_array; \ + while (_new_size < (R)) _new_size *= 2; \ + new_array = BROTLI_ALLOC((M), T, _new_size); \ + if (!BROTLI_IS_OOM(M) && !BROTLI_IS_NULL(new_array) && C != 0) \ + memcpy(new_array, A, C * sizeof(T)); \ + BROTLI_FREE((M), A); \ + A = new_array; \ + C = _new_size; \ + } \ +} + +/* +Appends value and dynamically grows array capacity when needed +M: MemoryManager +T: data type +A: array +C: array capacity +S: array size +V: value to append +*/ +#define BROTLI_ENSURE_CAPACITY_APPEND(M, T, A, C, S, V) { \ + (S)++; \ + BROTLI_ENSURE_CAPACITY(M, T, A, C, S); \ + A[(S) - 1] = (V); \ +} + +/* "Bootstrap" allocations are not tracked by memory manager; should be used + only to allocate MemoryManager itself (or structure containing it). */ +BROTLI_INTERNAL void* BrotliBootstrapAlloc(size_t size, + brotli_alloc_func alloc_func, brotli_free_func free_func, void* opaque); +BROTLI_INTERNAL void BrotliBootstrapFree(void* address, MemoryManager* m); + +#if defined(__cplusplus) || defined(c_plusplus) +} /* extern "C" */ +#endif + +#endif /* BROTLI_ENC_MEMORY_H_ */
