From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Subject: [PATCH 5/7] reftable/record: reuse message when decoding log records
Date: Tue, 5 Mar 2024 13:11:12 +0100 [thread overview]
Message-ID: <b71be7c8ce59c00c638486dfb2cb1c7866e195cd.1709640322.git.ps@pks.im> (raw)
In-Reply-To: <cover.1709640322.git.ps@pks.im>
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Same as the preceding commit we can allocate log messages as needed when
decoding log records, thus further reducing the number of allocations.
Before:
HEAP SUMMARY:
in use at exit: 13,473 bytes in 122 blocks
total heap usage: 3,068,488 allocs, 3,068,366 frees, 307,122,961 bytes allocated
After:
HEAP SUMMARY:
in use at exit: 13,473 bytes in 122 blocks
total heap usage: 2,068,487 allocs, 2,068,365 frees, 305,122,946 bytes allocated
Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
reftable/record.c | 5 +++--
reftable/reftable-record.h | 1 +
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/reftable/record.c b/reftable/record.c
index 82780b2d06..7c86877586 100644
--- a/reftable/record.c
+++ b/reftable/record.c
@@ -871,6 +871,7 @@ static int reftable_log_record_decode(void *rec, struct strbuf key,
switch (r->value_type) {
case REFTABLE_LOG_UPDATE:
FREE_AND_NULL(r->value.update.message);
+ r->value.update.message_cap = 0;
FREE_AND_NULL(r->value.update.email);
FREE_AND_NULL(r->value.update.name);
break;
@@ -943,8 +944,8 @@ static int reftable_log_record_decode(void *rec, struct strbuf key,
goto done;
string_view_consume(&in, n);
- r->value.update.message =
- reftable_realloc(r->value.update.message, dest.len + 1);
+ REFTABLE_ALLOC_GROW(r->value.update.message, dest.len + 1,
+ r->value.update.message_cap);
memcpy(r->value.update.message, dest.buf, dest.len);
r->value.update.message[dest.len] = 0;
diff --git a/reftable/reftable-record.h b/reftable/reftable-record.h
index d28f38175c..2a2943cd13 100644
--- a/reftable/reftable-record.h
+++ b/reftable/reftable-record.h
@@ -96,6 +96,7 @@ struct reftable_log_record {
uint64_t time;
int16_t tz_offset;
char *message;
+ size_t message_cap;
} update;
} value;
};
--
2.44.0
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next prev parent reply other threads:[~2024-03-05 12:11 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-05 12:10 [PATCH 0/7] reftable: memory optimizations for reflog iteration Patrick Steinhardt
2024-03-05 12:10 ` [PATCH 1/7] refs/reftable: reload correct stack when creating reflog iter Patrick Steinhardt
2024-03-06 16:13 ` Karthik Nayak
2024-03-06 17:49 ` Junio C Hamano
2024-03-07 6:00 ` Patrick Steinhardt
2024-03-11 18:34 ` Josh Steadmon
2024-03-11 23:24 ` Patrick Steinhardt
2024-03-05 12:10 ` [PATCH 2/7] reftable/record: convert old and new object IDs to arrays Patrick Steinhardt
2024-03-05 12:11 ` [PATCH 3/7] reftable/record: avoid copying author info Patrick Steinhardt
2024-03-13 1:09 ` James Liu
2024-03-21 13:10 ` Patrick Steinhardt
2024-03-05 12:11 ` [PATCH 4/7] reftable/record: reuse refnames when decoding log records Patrick Steinhardt
2024-03-05 12:11 ` Patrick Steinhardt [this message]
2024-03-05 12:11 ` [PATCH 6/7] reftable/record: use scratch buffer when decoding records Patrick Steinhardt
2024-03-11 19:31 ` Josh Steadmon
2024-03-11 23:25 ` Patrick Steinhardt
2024-03-11 19:40 ` Josh Steadmon
2024-03-05 12:11 ` [PATCH 7/7] refs/reftable: track last log record name via strbuf Patrick Steinhardt
2024-03-11 19:41 ` [PATCH 0/7] reftable: memory optimizations for reflog iteration Josh Steadmon
2024-03-11 23:25 ` Patrick Steinhardt
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