Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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71 lines
2.6 KiB
71 lines
2.6 KiB
/* |
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* Copyright (c) 2009-2021, Google LLC |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* * Neither the name of Google LLC nor the |
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* names of its contributors may be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef UPB_INTERNAL_ARENA_H_ |
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#define UPB_INTERNAL_ARENA_H_ |
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#include "upb/arena.h" |
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// Must be last. |
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#include "upb/port_def.inc" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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typedef struct mem_block mem_block; |
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struct upb_Arena { |
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_upb_ArenaHead head; |
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/* Stores cleanup metadata for this arena. |
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* - a pointer to the current cleanup counter. |
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* - a boolean indicating if there is an unowned initial block. */ |
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uintptr_t cleanup_metadata; |
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/* Allocator to allocate arena blocks. We are responsible for freeing these |
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* when we are destroyed. */ |
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upb_alloc* block_alloc; |
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uint32_t last_size; |
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/* When multiple arenas are fused together, each arena points to a parent |
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* arena (root points to itself). The root tracks how many live arenas |
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* reference it. */ |
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uint32_t refcount; /* Only used when a->parent == a */ |
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struct upb_Arena* parent; |
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/* Linked list of blocks to free/cleanup. */ |
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mem_block *freelist, *freelist_tail; |
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}; |
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#ifdef __cplusplus |
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} /* extern "C" */ |
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#endif |
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#include "upb/port_undef.inc" |
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#endif /* UPB_INTERNAL_ARENA_H_ */ |
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