zqz/platform-external-webrtc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Make CopyOnWriteBuffer keep capacity

Browse Source 
for SetData and Clear functions too.

This way result of all functions is same
for shared and non-shared buffer cases

R=kwiberg@webrtc.org

Review URL: https://codereview.webrtc.org/2328553002 .

Cr-Commit-Position: refs/heads/master@{#14196}
This commit is contained in:
Danil Chapovalov
2016-09-13 14:15:10 +02:00
parent 9708884c31
commit 2b2779f3f1
2 changed files with 107 additions and 44 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
webrtc/base/copyonwritebuffer.h
View File

@ -153,9 +153,10 @@ class CopyOnWriteBuffer {
internal::BufferCompat<uint8_t, T>::value>::type* = nullptr>
void SetData(const T* data, size_t size) {
RTC_DCHECK(IsConsistent());
if (!buffer_ || !buffer_->HasOneRef()) {
buffer_ = size > 0 ? new RefCountedObject<Buffer>(data, size)
: nullptr;
if (!buffer_) {
buffer_ = size > 0 ? new RefCountedObject<Buffer>(data, size) : nullptr;
} else if (!buffer_->HasOneRef()) {
buffer_ = new RefCountedObject<Buffer>(data, size, buffer_->capacity());
} else {
buffer_->SetData(data, size);
}
@ -253,13 +254,16 @@ class CopyOnWriteBuffer {
RTC_DCHECK(IsConsistent());
}
// Resets the buffer to zero size and capacity.
// Resets the buffer to zero size without altering capacity. Works even if the
// buffer has been moved from.
void Clear() {
RTC_DCHECK(IsConsistent());
if (!buffer_ || !buffer_->HasOneRef()) {
buffer_ = nullptr;
} else {
if (!buffer_)
return;
if (buffer_->HasOneRef()) {
buffer_->Clear();
} else {
buffer_ = new RefCountedObject<Buffer>(0, buffer_->capacity());
}
RTC_DCHECK(IsConsistent());
}