Dean Michael Berris c360f41097 [XRay][compiler-rt] Implement logging implementation registration ... Summary: This change allows for registration of multiple logging implementations through a central mechanism in XRay, mapping an implementation to a "mode". Modes are strings that are used as keys to determine which implementation to install through a single API. This mechanism allows users to choose which implementation to install either from the environment variable 'XRAY_OPTIONS' with the `xray_mode=` flag, or programmatically using the `__xray_select_mode(...)` function. Here, we introduce two API functions for the XRay logging: __xray_log_register_mode(Mode, Impl): Associates an XRayLogImpl to a string Mode. We can only have one implementation associated with a given Mode. __xray_log_select_mode(Mode): Finds the associated Impl for Mode and installs it as if by calling `__xray_set_log_impl(...)`. Along with these changes, we also deprecate the xray_naive_log and xray_fdr_log flags and encourage users to instead use the xray_mode flag. Reviewers: kpw, dblaikie, eizan, pelikan Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D40703 llvm-svn: 319759		2017-12-05 12:08:56 +00:00
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xray_interface.h	[XRay][compiler-rt] Allow for building the XRay runtime without PREINIT initialization.	2017-08-03 00:58:45 +00:00
xray_log_interface.h	[XRay][compiler-rt] Implement logging implementation registration	2017-12-05 12:08:56 +00:00
xray_records.h	[XRay][compiler-rt] Write out arg1 payload in naive mode logging	2017-10-05 05:45:51 +00:00