[PATCH v1 09/25] structured-logging: add detail-event for lazy_init_name_hash

[git]

From: Jeff Hostetler <jeffh...@microsoft.com>

Teach git to generate a structured logging detail-event for
lazy_init_name_hash().  This is marked as an "index" category
event and includes time and size data for the hashmaps.

Signed-off-by: Jeff Hostetler <jeffh...@microsoft.com>
---
 name-hash.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/name-hash.c b/name-hash.c
index 1638498..939b26a 100644
--- a/name-hash.c
+++ b/name-hash.c
@@ -7,6 +7,8 @@
  */
 #define NO_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
+#include "json-writer.h"
+#include "structured-logging.h"
 
 struct dir_entry {
        struct hashmap_entry ent;
@@ -603,6 +605,30 @@ static void lazy_init_name_hash(struct index_state *istate)
 
        istate->name_hash_initialized = 1;
        trace_performance_since(start, "initialize name hash");
+
+       if (slog_want_detail_event("index")) {
+               struct json_writer jw = JSON_WRITER_INIT;
+               uint64_t now_ns = getnanotime();
+               uint64_t elapsed_us = (now_ns - start) / 1000;
+
+               jw_object_begin(&jw, slog_is_pretty());
+               {
+                       jw_object_intmax(&jw, "cache_nr", istate->cache_nr);
+                       jw_object_intmax(&jw, "elapsed_us", elapsed_us);
+                       jw_object_intmax(&jw, "dir_count",
+                                        hashmap_get_size(&istate->dir_hash));
+                       jw_object_intmax(&jw, "dir_tablesize",
+                                        istate->dir_hash.tablesize);
+                       jw_object_intmax(&jw, "name_count",
+                                        hashmap_get_size(&istate->name_hash));
+                       jw_object_intmax(&jw, "name_tablesize",
+                                        istate->name_hash.tablesize);
+               }
+               jw_end(&jw);
+
+               slog_emit_detail_event("index", "lazy_init_name_hash", &jw);
+               jw_release(&jw);
+       }
 }
 
 /*
-- 
2.9.3