blob: f5562c3cf16e3f40b6814f216af1371dad3420f2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/transport_dib.h"
#include <unistd.h>
#include <sys/stat.h>
#include "base/eintr_wrapper.h"
#include "base/shared_memory.h"
TransportDIB::TransportDIB()
: size_(0) {
}
TransportDIB::TransportDIB(TransportDIB::Handle dib)
: shared_memory_(dib, false /* read write */),
size_(0) {
}
TransportDIB::~TransportDIB() {
}
// static
TransportDIB* TransportDIB::Create(size_t size, uint32_t sequence_num) {
TransportDIB* dib = new TransportDIB;
if (!dib->shared_memory_.Create("", false /* read write */,
false /* do not open existing */, size)) {
delete dib;
return NULL;
}
dib->size_ = size;
return dib;
}
// static
TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) {
TransportDIB* dib = new TransportDIB(handle);
struct stat st;
fstat(handle.fd, &st);
if (!dib->shared_memory_.Map(st.st_size)) {
delete dib;
HANDLE_EINTR(close(handle.fd));
return nullptr;
}
dib->size_ = st.st_size;
return dib;
}
void* TransportDIB::memory() const {
return shared_memory_.memory();
}
TransportDIB::Id TransportDIB::id() const {
return shared_memory_.id();
}
TransportDIB::Handle TransportDIB::handle() const {
return shared_memory_.handle();
}
|
