GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: allocated_buffer-inl.h Lines: 27 27 100.0 %
Date: 2022-01-17 04:13:54 Branches: 4 8 50.0 %

Line Branch Exec Source
1
#ifndef SRC_ALLOCATED_BUFFER_INL_H_
2
#define SRC_ALLOCATED_BUFFER_INL_H_
3
4
#include "allocated_buffer.h"
5
#include "base_object-inl.h"
6
#include "node_buffer.h"
7
#include "env-inl.h"
8
#include "uv.h"
9
#include "v8.h"
10
#include "util-inl.h"
11
#include "node_internals.h"
12
13
namespace node {
14
15
// It's a bit awkward to define this Buffer::New() overload here, but it
16
// avoids a circular dependency with node_internals.h.
17
namespace Buffer {
18
v8::MaybeLocal<v8::Uint8Array> New(Environment* env,
19
                                   v8::Local<v8::ArrayBuffer> ab,
20
                                   size_t byte_offset,
21
                                   size_t length);
22
}
23
24
98006
NoArrayBufferZeroFillScope::NoArrayBufferZeroFillScope(
25
98006
    IsolateData* isolate_data)
26
98006
  : node_allocator_(isolate_data->node_allocator()) {
27
98006
  if (node_allocator_ != nullptr) node_allocator_->zero_fill_field()[0] = 0;
28
98006
}
29
30
196012
NoArrayBufferZeroFillScope::~NoArrayBufferZeroFillScope() {
31
98006
  if (node_allocator_ != nullptr) node_allocator_->zero_fill_field()[0] = 1;
32
98006
}
33
34
1878
AllocatedBuffer AllocatedBuffer::AllocateManaged(
35
    Environment* env,
36
    size_t size) {
37
3756
  NoArrayBufferZeroFillScope no_zero_fill_scope(env->isolate_data());
38
  std::unique_ptr<v8::BackingStore> bs =
39
1878
      v8::ArrayBuffer::NewBackingStore(env->isolate(), size);
40
1878
  return AllocatedBuffer(env, std::move(bs));
41
}
42
43
1878
AllocatedBuffer::AllocatedBuffer(
44
1878
    Environment* env, std::unique_ptr<v8::BackingStore> bs)
45
1878
    : env_(env), backing_store_(std::move(bs)) {}
46
47
AllocatedBuffer::AllocatedBuffer(
48
    Environment* env, uv_buf_t buffer)
49
    : env_(env) {
50
  if (buffer.base == nullptr) return;
51
  auto map = env->released_allocated_buffers();
52
  auto it = map->find(buffer.base);
53
  CHECK_NE(it, map->end());
54
  backing_store_ = std::move(it->second);
55
  map->erase(it);
56
}
57
58
void AllocatedBuffer::Resize(size_t len) {
59
  if (len == 0) {
60
    backing_store_ = v8::ArrayBuffer::NewBackingStore(env_->isolate(), 0);
61
    return;
62
  }
63
  NoArrayBufferZeroFillScope no_zero_fill_scope(env_->isolate_data());
64
  backing_store_ = v8::BackingStore::Reallocate(
65
      env_->isolate(), std::move(backing_store_), len);
66
}
67
68
uv_buf_t AllocatedBuffer::release() {
69
  if (data() == nullptr) return uv_buf_init(nullptr, 0);
70
71
  CHECK_NOT_NULL(env_);
72
  uv_buf_t ret = uv_buf_init(data(), size());
73
  env_->released_allocated_buffers()->emplace(
74
      ret.base, std::move(backing_store_));
75
  return ret;
76
}
77
78
1919
char* AllocatedBuffer::data() {
79
1919
  if (!backing_store_) return nullptr;
80
1919
  return static_cast<char*>(backing_store_->Data());
81
}
82
83
const char* AllocatedBuffer::data() const {
84
  if (!backing_store_) return nullptr;
85
  return static_cast<char*>(backing_store_->Data());
86
}
87
88
89
41
size_t AllocatedBuffer::size() const {
90
41
  if (!backing_store_) return 0;
91
41
  return backing_store_->ByteLength();
92
}
93
94
void AllocatedBuffer::clear() {
95
  backing_store_.reset();
96
}
97
98
176
v8::MaybeLocal<v8::Object> AllocatedBuffer::ToBuffer() {
99
176
  v8::Local<v8::ArrayBuffer> ab = ToArrayBuffer();
100
176
  return Buffer::New(env_, ab, 0, ab->ByteLength())
101
176
      .FromMaybe(v8::Local<v8::Uint8Array>());
102
}
103
104
1877
v8::Local<v8::ArrayBuffer> AllocatedBuffer::ToArrayBuffer() {
105
1877
  return v8::ArrayBuffer::New(env_->isolate(), std::move(backing_store_));
106
}
107
108
}  // namespace node
109
110
#endif  // SRC_ALLOCATED_BUFFER_INL_H_