Guido Urdaneta 6b143c1c06 Revert "Fix unsynchronized access to mid_to_transport_ in JsepTransportController"
This reverts commit 6cd405850467683cf10d05028ea0f644a68a91a4.

Reason for revert: Breaks WebRTC Chromium FYI Bots

First failure:
https://ci.chromium.org/p/chromium/builders/webrtc.fyi/WebRTC%20Chromium%20FYI%20Android%20Tests%20%28dbg%29%20%28L%20Nexus5%29/1925

Failed tests:
WebRtcDataBrowserTest.CallWithSctpDataAndMedia
WebRtcDataBrowserTest.CallWithSctpDataOnly

Original change's description:
> Fix unsynchronized access to mid_to_transport_ in JsepTransportController
>
> * Added several thread checks to JTC to help with programmer errors.
> * Avoid a few Invokes() to the network thread here and there such
>   as for fetching sctp transport name for getStats(). The transport
>   name is now cached when it changes on the network thread.
> * JsepTransportController instances now get deleted on the network
>   thread rather than on the signaling thread + issuing an Invoke()
>   in the dtor.
> * Moved some thread hops from JTC over to PC which is where the problem
>   exists and also (imho) makes it easier to see where hops happen in
>   the PC code.
> * The sctp transport is now started asynchronously when we push down the
>   media description.
> * PeerConnection proxy calls GetSctpTransport directly on the network
>   thread instead of to the signaling thread + blocking on the network
>   thread.
> * The above changes simplified things for webrtc::SctpTransport which
>   allowed for removing locking from that class and delete some code.
>
> Bug: webrtc:9987, webrtc:12445
> Change-Id: Ic89a9426e314e1b93c81751d4f732f05fa448fbc
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/205620
> Commit-Queue: Tommi <tommi@webrtc.org>
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#33191}

TBR=tommi@webrtc.org,hta@webrtc.org

Change-Id: I7b2913d5133807589461105cf07eff3e9bb7157e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:9987
Bug: webrtc:12445
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/206466
Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
Commit-Queue: Guido Urdaneta <guidou@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33204}
2021-02-09 12:27:32 +00:00
..
2020-09-23 09:40:25 +00:00
2021-02-08 14:03:34 +00:00
2020-10-21 08:57:13 +00:00
2020-09-07 12:57:15 +00:00
2020-09-07 12:57:15 +00:00
2021-01-28 14:22:52 +00:00

How to write code in the api/ directory

Mostly, just follow the regular style guide, but:

  • Note that api/ code is not exempt from the “.h and .cc files come in pairs” rule, so if you declare something in api/path/to/foo.h, it should be defined in api/path/to/foo.cc.
  • Headers in api/ should, if possible, not #include headers outside api/. Its not always possible to avoid this, but be aware that it adds to a small mountain of technical debt that were trying to shrink.
  • .cc files in api/, on the other hand, are free to #include headers outside api/.

That is, the preferred way for api/ code to access non-api/ code is to call it from a .cc file, so that users of our API headers wont transitively #include non-public headers.

For headers in api/ that need to refer to non-public types, forward declarations are often a lesser evil than including non-public header files. The usual rules still apply, though.

.cc files in api/ should preferably be kept reasonably small. If a substantial implementation is needed, consider putting it with our non-public code, and just call it from the api/ .cc file.