platform_bionic/libc/async_safe
Shikha Panwar 307254c616 Make libasync_safe available in com.android.virt
This is required because virtualization_service use
libtombstoned_client_rust which has transitive dependency on
libasync_safe

Test: atest MicrodroidHostTestCases
Bug: 202153827
Change-Id: I9e670d02995f9ed9e67791aaecb300b6bfdbdb03
2022-04-06 21:00:13 +00:00
..
include/async_safe linker: CHECK() or async_safe_fatal() rather than abort(). 2020-06-10 14:49:28 -07:00
Android.bp Make libasync_safe available in com.android.virt 2022-04-06 21:00:13 +00:00
async_safe_log.cpp Add %m and %#x support for async_safe logging 2022-02-17 07:23:58 +00:00
README.md Add a README.md for async_safe 2020-01-17 12:12:26 -08:00

async_safe logging

This library provides an async_safe implementation for formatting and writing log messages to logd.

Note that the liblog implementation connects a single socket to logd and uses a RWLock to manage it among threads, whereas these functions connect to liblog for each log message. While it's beneficial to have this lock-free and therefore async_safe mechanism to write to logd, connecting a socket for each message does not scale well under load. It was also determined to be too costly to connect a socket for each thread as some processes, such as system_server, have over 100 threads. Therefore, we maintain these two separate mechanisms.