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authorMatthew Pickering <matthewtpickering@gmail.com>2019-10-09 14:32:13 +0100
committerMarge Bot <ben+marge-bot@smart-cactus.org>2019-10-23 05:58:58 -0400
commit17987a4b665d4a270b1bebba1f61d67887f2653c (patch)
tree922a01003b495c1a0cdf9457f7ecbb4985e20578 /includes/rts/EventLogFormat.h
parentb521e8b698cc415684fbc0ea5ddfab51077cb144 (diff)
downloadhaskell-17987a4b665d4a270b1bebba1f61d67887f2653c.tar.gz
eventlog: Dump cost centre stack on each sample
With this change it is possible to reconstruct the timing portion of a `.prof` file after the fact. By logging the stacks at each time point a more precise executation trace of the program can be observed rather than all identical cost centres being identified in the report. There are two new events: 1. `EVENT_PROF_BEGIN` - emitted at the start of profiling to communicate the tick interval 2. `EVENT_PROF_SAMPLE_COST_CENTRE` - emitted on each tick to communicate the current call stack. Fixes #17322
Diffstat (limited to 'includes/rts/EventLogFormat.h')
-rw-r--r--includes/rts/EventLogFormat.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/includes/rts/EventLogFormat.h b/includes/rts/EventLogFormat.h
index ad983e70b3..7b989b014b 100644
--- a/includes/rts/EventLogFormat.h
+++ b/includes/rts/EventLogFormat.h
@@ -180,6 +180,8 @@
#define EVENT_HEAP_PROF_SAMPLE_STRING 164
#define EVENT_HEAP_PROF_SAMPLE_END 165
#define EVENT_HEAP_BIO_PROF_SAMPLE_BEGIN 166
+#define EVENT_PROF_SAMPLE_COST_CENTRE 167
+#define EVENT_PROF_BEGIN 168
#define EVENT_USER_BINARY_MSG 181