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authorMartin Pelikan <martin.pelikan@gmail.com>2017-09-28 05:29:59 +0000
committerMartin Pelikan <martin.pelikan@gmail.com>2017-09-28 05:29:59 +0000
commitaf46bb333e568ca5c737a1e6d058e1d06f9a29a9 (patch)
treef96426abf4c9d7fcec5662dcd430e9201a1d5d6f /include
parent59f023a92f4a75253e53cfbe1efc6f1dbaeb8208 (diff)
[XRay] [compiler-rt] FDR logging arg1 handler
Summary: Write out records about logged function call first arguments. D32840 implements the reading of this in llvm-xray. Reviewers: dberris Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D32844 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@314378 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
-rw-r--r--include/xray/xray_log_interface.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/xray/xray_log_interface.h b/include/xray/xray_log_interface.h
index cdb20094d..7be9a4a6f 100644
--- a/include/xray/xray_log_interface.h
+++ b/include/xray/xray_log_interface.h
@@ -159,6 +159,9 @@ struct XRayLogImpl {
/// always have a handler for function entry and exit events. In case the
/// implementation wants to support arg1 (or other future extensions to XRay
/// logging) those MUST be installed by the installed 'log_init' handler.
+ ///
+ /// Because we didn't want to change the ABI of this struct, the arg1 handler
+ /// may be silently overwritten during initialization as well.
void (*handle_arg0)(int32_t, XRayEntryType);
/// The log implementation provided routine for when __xray_log_flushLog() is