From: "brian m. carlson" <sandals@crustytoothpaste.net>
To: <git@vger.kernel.org>
Cc: Junio C Hamano <gitster@pobox.com>,
Matthew John Cheetham <mjcheetham@outlook.com>,
M Hickford <mirth.hickford@gmail.com>
Subject: [PATCH 12/13] strvec: implement swapping two strvecs
Date: Sun, 24 Mar 2024 01:13:00 +0000 [thread overview]
Message-ID: <20240324011301.1553072-13-sandals@crustytoothpaste.net> (raw)
In-Reply-To: <20240324011301.1553072-1-sandals@crustytoothpaste.net>
In a future commit, we'll want the ability to efficiently swap the
contents of two strvec instances without needing to copy any data.
Since a strvec is simply a pointer and two sizes, swapping them is as
simply as copying the two pointers and sizes, so let's do that.
We use a temporary here simply because C doesn't provide a standard
swapping function, unlike C++ and Rust, but a good optimizing compiler
will recognize this syntax and handle it appropriately using an
optimization pass.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
strvec.c | 7 +++++++
strvec.h | 5 +++++
2 files changed, 12 insertions(+)
diff --git a/strvec.c b/strvec.c
index 178f4f3748..93006f1e63 100644
--- a/strvec.c
+++ b/strvec.c
@@ -106,3 +106,10 @@ const char **strvec_detach(struct strvec *array)
return ret;
}
}
+
+void strvec_swap(struct strvec *a, struct strvec *b)
+{
+ struct strvec t = *a;
+ *a = *b;
+ *b = t;
+}
diff --git a/strvec.h b/strvec.h
index 4715d3e51f..5b762532bb 100644
--- a/strvec.h
+++ b/strvec.h
@@ -88,4 +88,9 @@ void strvec_clear(struct strvec *);
*/
const char **strvec_detach(struct strvec *);
+/**
+ * Swap the contents of two `strvec` structs without allocating.
+ */
+void strvec_swap(struct strvec *, struct strvec *);
+
#endif /* STRVEC_H */
next prev parent reply other threads:[~2024-03-24 1:13 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-24 1:12 [PATCH 00/13] Support for arbitrary schemes in credentials brian m. carlson
2024-03-24 1:12 ` [PATCH 01/13] credential: add an authtype field brian m. carlson
2024-03-24 1:12 ` [PATCH 02/13] remote-curl: reset headers on new request brian m. carlson
2024-03-24 1:12 ` [PATCH 03/13] http: use new headers for each object request brian m. carlson
2024-03-27 8:02 ` Patrick Steinhardt
2024-03-24 1:12 ` [PATCH 04/13] credential: add a field for pre-encoded credentials brian m. carlson
2024-03-24 1:12 ` [PATCH 05/13] credential: gate new fields on capability brian m. carlson
2024-03-27 8:02 ` Patrick Steinhardt
2024-03-27 21:33 ` brian m. carlson
2024-04-02 10:04 ` Patrick Steinhardt
2024-04-04 0:39 ` brian m. carlson
2024-04-04 4:07 ` Patrick Steinhardt
2024-03-28 10:20 ` Jeff King
2024-03-28 16:13 ` Junio C Hamano
2024-03-28 16:29 ` Jeff King
2024-03-28 17:25 ` Junio C Hamano
2024-03-28 21:18 ` brian m. carlson
2024-03-24 1:12 ` [PATCH 06/13] docs: indicate new credential protocol fields brian m. carlson
2024-03-25 23:16 ` M Hickford
2024-03-25 23:37 ` brian m. carlson
2024-03-30 13:00 ` M Hickford
2024-03-31 21:43 ` brian m. carlson
2024-03-24 1:12 ` [PATCH 07/13] http: add support for authtype and credential brian m. carlson
2024-03-24 1:12 ` [PATCH 08/13] credential: add an argument to keep state brian m. carlson
2024-04-01 21:05 ` mirth hickford
2024-04-01 22:14 ` brian m. carlson
2024-03-24 1:12 ` [PATCH 09/13] credential: enable state capability brian m. carlson
2024-03-24 1:12 ` [PATCH 10/13] docs: set a limit on credential line length brian m. carlson
2024-03-24 1:12 ` [PATCH 11/13] t5563: refactor for multi-stage authentication brian m. carlson
2024-03-24 1:13 ` brian m. carlson [this message]
2024-03-27 8:02 ` [PATCH 12/13] strvec: implement swapping two strvecs Patrick Steinhardt
2024-03-27 21:22 ` Junio C Hamano
2024-03-27 21:34 ` brian m. carlson
2024-03-24 1:13 ` [PATCH 13/13] credential: add support for multistage credential rounds brian m. carlson
2024-03-28 8:00 ` M Hickford
2024-03-28 21:53 ` brian m. carlson
2024-04-01 20:51 ` M Hickford
2024-03-24 2:24 ` [PATCH 00/13] Support for arbitrary schemes in credentials Junio C Hamano
2024-03-24 15:21 ` brian m. carlson
2024-03-24 16:13 ` Junio C Hamano
2024-03-30 8:00 ` M Hickford
2024-03-30 8:16 ` M Hickford
2024-04-02 22:26 ` Calvin Wan
2024-04-04 1:01 ` brian m. carlson
2024-04-08 18:42 ` Jackson Toeniskoetter
2024-04-11 7:00 ` M Hickford
2024-04-12 0:09 ` brian m. carlson
2024-04-11 7:00 ` M Hickford
2024-04-12 0:13 ` brian m. carlson
2024-04-17 0:02 ` [PATCH v2 00/16] " brian m. carlson
2024-04-17 0:02 ` [PATCH v2 01/16] credential: add an authtype field brian m. carlson
2024-04-17 0:02 ` [PATCH v2 02/16] remote-curl: reset headers on new request brian m. carlson
2024-04-17 0:02 ` [PATCH v2 03/16] http: use new headers for each object request brian m. carlson
2024-04-17 0:02 ` [PATCH v2 04/16] credential: add a field for pre-encoded credentials brian m. carlson
2024-04-17 0:02 ` [PATCH v2 05/16] credential: gate new fields on capability brian m. carlson
2024-04-17 0:02 ` [PATCH v2 06/16] credential: add a field called "ephemeral" brian m. carlson
2024-04-17 0:02 ` [PATCH v2 07/16] docs: indicate new credential protocol fields brian m. carlson
2024-04-17 0:02 ` [PATCH v2 08/16] http: add support for authtype and credential brian m. carlson
2024-04-17 0:02 ` [PATCH v2 09/16] credential: add an argument to keep state brian m. carlson
2024-04-17 0:02 ` [PATCH v2 10/16] credential: enable state capability brian m. carlson
2024-04-17 0:02 ` [PATCH v2 11/16] docs: set a limit on credential line length brian m. carlson
2024-04-17 0:02 ` [PATCH v2 12/16] t5563: refactor for multi-stage authentication brian m. carlson
2024-04-17 0:02 ` [PATCH v2 13/16] credential: add support for multistage credential rounds brian m. carlson
2024-04-17 0:02 ` [PATCH v2 14/16] t: add credential tests for authtype brian m. carlson
2024-04-17 0:02 ` [PATCH v2 15/16] credential-cache: implement authtype capability brian m. carlson
2024-04-17 0:02 ` [PATCH v2 16/16] credential: add method for querying capabilities brian m. carlson
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