1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "form_ashmem.h"
17
18 #include "hilog_wrapper.h"
19 #include "message_parcel.h"
20
21 namespace OHOS {
22 namespace AppExecFwk {
~FormAshmem()23 FormAshmem::~FormAshmem()
24 {
25 if (ashmem_ != nullptr) {
26 ashmem_->CloseAshmem();
27 }
28 }
29
Marshalling(Parcel & parcel) const30 bool FormAshmem::Marshalling(Parcel &parcel) const
31 {
32 MessageParcel* messageParcel = (MessageParcel*)&parcel;
33 if (!messageParcel->WriteAshmem(ashmem_)) {
34 return false;
35 }
36 return true;
37 }
38
ReadFromParcel(Parcel & parcel)39 bool FormAshmem::ReadFromParcel(Parcel &parcel)
40 {
41 MessageParcel* messageParcel = (MessageParcel*)&parcel;
42 ashmem_ = messageParcel->ReadAshmem();
43 if (ashmem_ == nullptr) {
44 return false;
45 }
46 HILOG_INFO("fd: %{public}d, size: %{public}d", ashmem_->GetAshmemFd(), ashmem_->GetAshmemSize());
47 return true;
48 }
49
Unmarshalling(Parcel & parcel)50 FormAshmem* FormAshmem::Unmarshalling(Parcel &parcel)
51 {
52 FormAshmem* formAshmem = new (std::nothrow) FormAshmem();
53 if (formAshmem != nullptr && !formAshmem->ReadFromParcel(parcel)) {
54 delete formAshmem;
55 formAshmem = nullptr;
56 }
57 return formAshmem;
58 }
59
WriteToAshmem(std::string name,char * data,int32_t size)60 bool FormAshmem::WriteToAshmem(std::string name, char *data, int32_t size)
61 {
62 if (size <= 0) {
63 HILOG_ERROR("%{public}s: Parameter is invalid, size= %{public}d", __func__, size);
64 }
65
66 ashmem_ = Ashmem::CreateAshmem(name.c_str(), size);
67 if (ashmem_ == nullptr) {
68 HILOG_ERROR("create shared memory fail");
69 return false;
70 }
71
72 bool ret = ashmem_->MapReadAndWriteAshmem();
73 if (!ret) {
74 HILOG_ERROR("map shared memory fail");
75 return false;
76 }
77
78 ret = ashmem_->WriteToAshmem(data, size, 0);
79 if (!ret) {
80 ashmem_->UnmapAshmem();
81 HILOG_ERROR("write image data to shared memory fail");
82 return false;
83 }
84
85 ashmem_->UnmapAshmem();
86 return true;
87 }
88
GetAshmemSize()89 int32_t FormAshmem::GetAshmemSize()
90 {
91 if (ashmem_ == nullptr) {
92 return 0;
93 }
94 return ashmem_->GetAshmemSize();
95 }
96
GetAshmemFd()97 int32_t FormAshmem::GetAshmemFd()
98 {
99 if (ashmem_ == nullptr) {
100 return -1;
101 }
102 return ashmem_->GetAshmemFd();
103 }
104 } // namespace AppExecFwk
105 } // namespace OHOS
106