Expose os_log API to include symbol names and source line numbers

Originator:torarnv
Number:rdar://35958308 Date Originated:11.12.2017
Status:Open Resolved:NO
Product:macOS + SDK Product Version:10.13
Classification:Feature Reproducible:
 
os_log captures the image, function, filename, and linenumber automatically, but may not always be correct, e.g. in the case of logging from a wrapper function such as _swift_os_log:

https://github.com/apple/swift/blob/65b0219/stdlib/public/SDK/os/os_log.m#L306

It would be helpful if you could either expose an os_log variant that takes this info as freeform input, or one that takes the address of the relevant function, similar to the trick used by _swift_os_log, without having to expose os_log_pack_send and friends too:

https://github.com/apple/swift/blob/65b0219/stdlib/public/SDK/os/os_log.m#L324

Comments

It appears os_log_with_args would be the perfect candidate for this. Please please please make this function non-SPI :)

By torarnv at Feb. 8, 2018, 2:44 p.m. (reply...)

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