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Revert of Use CopyOnWriteBuffer instead of Buffer to avoid unnecessary copies. (patchset #4 id:60001 of https://codereview.webrtc.org/1785713005/ )

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Reason for revert:
I'm really sorry for having to revert this but it seems this hit an unexpected compile error downstream:

webrtc/media/sctp/sctpdataengine.cc: In function 'void cricket::VerboseLogPacket(const void*, size_t, int)':
webrtc/media/sctp/sctpdataengine.cc:172:37: error: invalid conversion from 'const void*' to 'void*' [-fpermissive]
              data, length, direction)) != NULL) {
                                     ^
In file included from webrtc/media/sctp/sctpdataengine.cc:20:0:
third_party/usrsctp/usrsctplib/usrsctp.h:964:1: error:   initializing argument 1 of 'char* usrsctp_dumppacket(void*, size_t, int)' [-fpermissive]
 usrsctp_dumppacket(void *, size_t, int);
 ^

I'm sure you can fix this easily and just re-land this CL, while I'm going to look into how to add this warning at the public bots (on Monday).

Original issue's description:
> Use CopyOnWriteBuffer instead of Buffer to avoid unnecessary copies.
>
> This CL removes copy and assign support from Buffer and changes various
> parameters from Buffer to CopyOnWriteBuffer so they can be passed along
> and copied without actually copying the underlying data.
>
> With this changed some parameters to be "const" and fixed an issue when
> creating a CopyOnWriteBuffer with empty data.
>
> BUG=webrtc:5155
>
> Committed: https://crrev.com/944c39006f1c52aee20919676002dac7a42b1c05
> Cr-Commit-Position: refs/heads/master@{#12058}

TBR=kwiberg@webrtc.org,tkchin@webrtc.org,tommi@webrtc.org,pthatcher@webrtc.org,jbauch@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5155

Review URL: https://codereview.webrtc.org/1817753003

Cr-Commit-Position: refs/heads/master@{#12060}
This commit is contained in:
kjellander
2016-03-19 12:12:52 -07:00
committed by Commit bot
parent ebfbab5059
commit 194e3bcc53
39 changed files with 246 additions and 295 deletions
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17
webrtc/base/buffer_unittest.cc
View File

@ -64,6 +64,23 @@ TEST(BufferTest, TestConstructArray) {
EXPECT_EQ(0, memcmp(buf.data(), kTestData, 16));
}
TEST(BufferTest, TestConstructCopy) {
Buffer buf1(kTestData), buf2(buf1);
EXPECT_EQ(buf2.size(), 16u);
EXPECT_EQ(buf2.capacity(), 16u);
EXPECT_EQ(0, memcmp(buf2.data(), kTestData, 16));
EXPECT_NE(buf1.data(), buf2.data());
EXPECT_EQ(buf1, buf2);
}
TEST(BufferTest, TestAssign) {
Buffer buf1, buf2(kTestData, sizeof(kTestData), 256);
EXPECT_NE(buf1, buf2);
buf1 = buf2;
EXPECT_EQ(buf1, buf2);
EXPECT_NE(buf1.data(), buf2.data());
}
TEST(BufferTest, TestSetData) {
Buffer buf(kTestData + 4, 7);
buf.SetData(kTestData, 9);