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From: Serge Petrenko <sergepetrenko@tarantool.org>
To: v.shpilevoy@tarantool.org, gorcunov@gmail.com
Cc: tarantool-patches@dev.tarantool.org
Subject: [Tarantool-patches] [PATCH v2 3/6] txn_limbo: introduce txn_limbo_last_synchro_entry method
Date: Wed, 23 Dec 2020 14:59:21 +0300	[thread overview]
Message-ID: <c49111452542779ae417a33fe8543a8c3cd6a8cd.1608724239.git.sergepetrenko@tarantool.org> (raw)
In-Reply-To: <cover.1608724238.git.sergepetrenko@tarantool.org>

It'll be useful for box_clear_synchro_queue rework.

Prerequisite #5435
---
 src/box/txn_limbo.c | 12 ++++++++++++
 src/box/txn_limbo.h |  7 +++++++
 2 files changed, 19 insertions(+)

diff --git a/src/box/txn_limbo.c b/src/box/txn_limbo.c
index c406ed4c8..9272f5227 100644
--- a/src/box/txn_limbo.c
+++ b/src/box/txn_limbo.c
@@ -55,6 +55,18 @@ txn_limbo_is_ro(struct txn_limbo *limbo)
 	return limbo->owner_id != instance_id && !txn_limbo_is_empty(limbo);
 }
 
+struct txn_limbo_entry *
+txn_limbo_last_synchro_entry(struct txn_limbo *limbo)
+{
+	struct txn_limbo_entry *entry = NULL;
+	rlist_foreach_entry_reverse(entry, &limbo->queue, in_queue) {
+		if (txn_has_flag(entry->txn, TXN_WAIT_ACK))
+			break;
+	}
+	assert(entry == NULL || txn_has_flag(entry->txn, TXN_WAIT_ACK));
+	return entry;
+}
+
 struct txn_limbo_entry *
 txn_limbo_append(struct txn_limbo *limbo, uint32_t id, struct txn *txn)
 {
diff --git a/src/box/txn_limbo.h b/src/box/txn_limbo.h
index f7d67a826..a49356c14 100644
--- a/src/box/txn_limbo.h
+++ b/src/box/txn_limbo.h
@@ -189,6 +189,13 @@ txn_limbo_last_entry(struct txn_limbo *limbo)
 				in_queue);
 }
 
+/**
+ * Return the last synchronous transaction in the limbo or NULL when it is
+ * empty.
+ */
+struct txn_limbo_entry *
+txn_limbo_last_synchro_entry(struct txn_limbo *limbo);
+
 /**
  * Allocate, create, and append a new transaction to the limbo.
  * The limbo entry is allocated on the transaction's region.
-- 
2.24.3 (Apple Git-128)

  parent reply	other threads:[~2020-12-23 11:59 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-23 11:59 [Tarantool-patches] [PATCH v2 0/6] make clear_synchro_queue commit everything Serge Petrenko
2020-12-23 11:59 ` [Tarantool-patches] [PATCH v2 1/6] box: add a single execution guard to clear_synchro_queue Serge Petrenko
2020-12-23 11:59 ` [Tarantool-patches] [PATCH v2 2/6] relay: introduce on_status_update trigger Serge Petrenko
2020-12-23 17:25   ` Vladislav Shpilevoy
2020-12-24 16:11     ` Serge Petrenko
2020-12-23 11:59 ` Serge Petrenko [this message]
2020-12-23 17:25   ` [Tarantool-patches] [PATCH v2 3/6] txn_limbo: introduce txn_limbo_last_synchro_entry method Vladislav Shpilevoy
2020-12-24 16:13     ` Serge Petrenko
2020-12-23 11:59 ` [Tarantool-patches] [PATCH v2 4/6] box: rework clear_synchro_queue to commit everything Serge Petrenko
2020-12-23 17:28   ` Vladislav Shpilevoy
2020-12-24 16:12     ` Serge Petrenko
2020-12-24 17:35       ` Vladislav Shpilevoy
2020-12-24 21:02         ` Serge Petrenko
2020-12-23 11:59 ` [Tarantool-patches] [PATCH v2 5/6] test: fix replication/election_qsync_stress test Serge Petrenko
2020-12-23 11:59 ` [Tarantool-patches] [PATCH v2 6/6] txn_limbo: ignore CONFIRM/ROLLBACK for a foreign master Serge Petrenko
2020-12-23 17:28   ` Vladislav Shpilevoy
2020-12-24 16:13     ` Serge Petrenko
2020-12-25 10:04 ` [Tarantool-patches] [PATCH v2 0/6] make clear_synchro_queue commit everything Kirill Yukhin

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