Sha256: a3ade4edea1e3475dbbf64a966f7413e163dc74984f6ced6c17d2d04d368bee6
Contents?: true
Size: 1.79 KB
Versions: 8
Compression:
Stored size: 1.79 KB
Contents
// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#include "upb/message/internal/message.h"
#include <math.h>
#include <string.h>
#include "upb/base/internal/log2.h"
#include "upb/mem/arena.h"
#include "upb/message/internal/types.h"
// Must be last.
#include "upb/port/def.inc"
const float kUpb_FltInfinity = INFINITY;
const double kUpb_Infinity = INFINITY;
const double kUpb_NaN = NAN;
bool UPB_PRIVATE(_upb_Message_Realloc)(struct upb_Message* msg, size_t need,
upb_Arena* a) {
const size_t overhead = sizeof(upb_Message_Internal);
upb_Message_Internal* in = msg->internal;
if (!in) {
// No internal data, allocate from scratch.
size_t size = UPB_MAX(128, upb_Log2CeilingSize(need + overhead));
in = upb_Arena_Malloc(a, size);
if (!in) return false;
in->size = size;
in->unknown_end = overhead;
in->ext_begin = size;
msg->internal = in;
} else if (in->ext_begin - in->unknown_end < need) {
// Internal data is too small, reallocate.
size_t new_size = upb_Log2CeilingSize(in->size + need);
size_t ext_bytes = in->size - in->ext_begin;
size_t new_ext_begin = new_size - ext_bytes;
in = upb_Arena_Realloc(a, in, in->size, new_size);
if (!in) return false;
if (ext_bytes) {
// Need to move extension data to the end.
char* ptr = (char*)in;
memmove(ptr + new_ext_begin, ptr + in->ext_begin, ext_bytes);
}
in->ext_begin = new_ext_begin;
in->size = new_size;
msg->internal = in;
}
UPB_ASSERT(in->ext_begin - in->unknown_end >= need);
return true;
}
Version data entries
8 entries across 8 versions & 1 rubygems