| commit | b347ff4369f4417ae6dd2774c674563653c5ef3d | [log] [tgz] |
|---|---|---|
| author | André Pang <apang@google.com> | Fri Dec 28 16:07:54 2018 -0800 |
| committer | CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> | Wed Jan 16 19:27:42 2019 +0000 |
| tree | 95d756323e714a03029599eb1fe5baa73ca2ff3d | |
| parent | 800bf6967bb84ebd850e19ebf28a70c3c9d1b30b [diff] |
[fidl] Initial support for extensible unions.
Implements extensible unions ("xunions") described in FTP-015.
Differences with the FTP:
* We use "xunion" as a keyword to define an extensible union, rather
than "union".
* "union" continues to define a static union, which still exists, and is
unchanged.
* Ordinals are calculated using FTP-020. Explicit ordinals are not
allowed.
* Zero is an allowed ordinal, and indicates that the xunion is empty.
* No reserved field support yet, since ordinal hashing may make this
unnecessary.
Happy to discuss any of the above points, of course!
Test: make HOST_USE_ASAN=true tools && $FUCHSIA_DIR/zircon/build-x64/host_tests/fidl-compiler-test
Change-Id: Ib07d6135099424dd7a617c6f3af8579122e92418
Zircon is the core platform that powers the Fuchsia OS. Zircon is composed of a microkernel (source in kernel/...) as well as a small set of userspace services, drivers, and libraries (source in system/...) necessary for the system to boot, talk to hardware, load userspace processes and run them, etc. Fuchsia builds a much larger OS on top of this foundation.
The canonical Zircon Git repository is located at: https://fuchsia.googlesource.com/zircon
A read-only mirror of the code is present at: https://github.com/fuchsia-mirror/zircon
The Zircon Kernel provides syscalls to manage processes, threads, virtual memory, inter-process communication, waiting on object state changes, and locking (via futexes).
Currently there are some temporary syscalls that have been used for early bringup work, which will be going away in the future as the long term syscall API/ABI surface is finalized. The expectation is that there will be about 100 syscalls.
Zircon syscalls are generally non-blocking. The wait_one, wait_many port_wait and thread sleep being the notable exceptions.
This page is a non-comprehensive index of the zircon documentation.