| commit | 71ad2685cd10e332a13399a870e8ad5564e2c29e | [log] [tgz] |
|---|---|---|
| author | James Robinson <jamesr@google.com> | Tue Jan 22 18:04:31 2019 -0800 |
| committer | CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> | Thu Jan 24 21:09:04 2019 +0000 |
| tree | 2188c600c7d04f39e5b66353f6bd06dd9b7547c9 | |
| parent | 558a2e00d6430f0b050ff9664e847d71784979e8 [diff] |
[blobfs] Teach blobfs host tool to record the size of blobs as it writes This adds a '--sizes' option to the blobfs host tool which tells the tool to write down the amount of space used by each blob after any processing it may perform internally (compression, alignment, etc) has been done. The output format is manifest style, that is a list of lines each of the form: <blob merkle digest>=<number of bytes> This can be used by tools higher up the stack to get a more accurate picture of what's going on inside a blobfs partition. Test: run blobfs tool with '--sizes <filename>', examine output ZX-3303 #comment host tool support Change-Id: Ifcdd7c7305123713e0dfdb456292635cbe73fb16
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
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.