diff options
| author | Junio C Hamano <gitster@pobox.com> | 2021-04-02 15:14:54 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-04-02 15:14:54 -0700 |
| commit | b4e4759bd226dd16de8873c4b2cb1354511d1116 (patch) | |
| tree | 4c3c4b89032d6d9843dc021af85a3ef52618d6ed | |
| parent | 3818f89ec2ff1b3fe76412b01c315b47369ef1ee (diff) | |
| download | git-htmldocs-b4e4759bd226dd16de8873c4b2cb1354511d1116.tar.gz | |
Autogenerated HTML docs for v2.31.1-189-g2e365
| -rw-r--r-- | RelNotes/2.32.0.txt | 7 | ||||
| -rw-r--r-- | git-format-patch.html | 7 | ||||
| -rw-r--r-- | git-format-patch.txt | 5 | ||||
| -rw-r--r-- | howto/keep-canonical-history-correct.html | 2 | ||||
| -rw-r--r-- | howto/maintain-git.html | 2 | ||||
| -rw-r--r-- | howto/new-command.html | 2 | ||||
| -rw-r--r-- | howto/rebase-from-internal-branch.html | 2 | ||||
| -rw-r--r-- | howto/rebuild-from-update-hook.html | 2 | ||||
| -rw-r--r-- | howto/recover-corrupted-blob-object.html | 2 | ||||
| -rw-r--r-- | howto/recover-corrupted-object-harder.html | 2 | ||||
| -rw-r--r-- | howto/revert-a-faulty-merge.html | 2 | ||||
| -rw-r--r-- | howto/revert-branch-rebase.html | 2 | ||||
| -rw-r--r-- | howto/separating-topic-branches.html | 2 | ||||
| -rw-r--r-- | howto/setup-git-server-over-http.html | 2 | ||||
| -rw-r--r-- | howto/update-hook-example.html | 2 | ||||
| -rw-r--r-- | howto/use-git-daemon.html | 2 | ||||
| -rw-r--r-- | howto/using-merge-subtree.html | 2 | ||||
| -rw-r--r-- | howto/using-signed-tag-in-pull-request.html | 2 | ||||
| -rw-r--r-- | technical/api-index.html | 7 | ||||
| -rw-r--r-- | technical/api-index.txt | 1 | ||||
| -rw-r--r-- | technical/api-simple-ipc.html | 847 | ||||
| -rw-r--r-- | technical/api-simple-ipc.txt | 105 |
22 files changed, 992 insertions, 17 deletions
diff --git a/RelNotes/2.32.0.txt b/RelNotes/2.32.0.txt index f39eede00..d69e69ffd 100644 --- a/RelNotes/2.32.0.txt +++ b/RelNotes/2.32.0.txt @@ -47,6 +47,9 @@ UI, Workflows & Features * "git send-email" learned to honor the core.hooksPath configuration. + * "git format-patch -v<n>" learned to allow a reroll count that is + not an integer. + Performance, Internal Implementation, Development Support etc. @@ -65,6 +68,10 @@ Performance, Internal Implementation, Development Support etc. * Reorganize Makefile to allow building git.o and other essential objects without extra stuff needed only for testing. + * Preparatory API changes for parallel checkout. + + * A simple IPC interface gets introduced to build services like + fsmonitor on top. Fixes since v2.31 diff --git a/git-format-patch.html b/git-format-patch.html index a7bcc60f2..964cd671b 100644 --- a/git-format-patch.html +++ b/git-format-patch.html @@ -1855,6 +1855,11 @@ populated with placeholder text.</p></div> <code>--subject-prefix</code> option) has ` v<n>` appended to it. E.g.
<code>--reroll-count=4</code> may produce <code>v4-0001-add-makefile.patch</code>
file that has "Subject: [PATCH v4 1/20] Add makefile" in it.
+ <code><n></code> does not have to be an integer (e.g. "--reroll-count=4.4",
+ or "--reroll-count=4rev2" are allowed), but the downside of
+ using such a reroll-count is that the range-diff/interdiff
+ with the previous version does not state exactly which
+ version the new interation is compared against.
</p>
</dd>
<dt class="hdlist1">
@@ -2549,7 +2554,7 @@ Extract three topmost commits from the current branch and format them <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:09:45 PDT
+ 2021-04-02 15:10:10 PDT
</div>
</div>
</body>
diff --git a/git-format-patch.txt b/git-format-patch.txt index 5cd8578b6..911da181a 100644 --- a/git-format-patch.txt +++ b/git-format-patch.txt @@ -238,6 +238,11 @@ populated with placeholder text. `--subject-prefix` option) has ` v<n>` appended to it. E.g. `--reroll-count=4` may produce `v4-0001-add-makefile.patch` file that has "Subject: [PATCH v4 1/20] Add makefile" in it. + `<n>` does not have to be an integer (e.g. "--reroll-count=4.4", + or "--reroll-count=4rev2" are allowed), but the downside of + using such a reroll-count is that the range-diff/interdiff + with the previous version does not state exactly which + version the new interation is compared against. --to=<email>:: Add a `To:` header to the email headers. This is in addition diff --git a/howto/keep-canonical-history-correct.html b/howto/keep-canonical-history-correct.html index e3b748ead..441db9da8 100644 --- a/howto/keep-canonical-history-correct.html +++ b/howto/keep-canonical-history-correct.html @@ -938,7 +938,7 @@ tip of your <em>master</em> again and redo the two merges:</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:41 PDT
+ 2021-04-02 15:11:40 PDT
</div>
</div>
</body>
diff --git a/howto/maintain-git.html b/howto/maintain-git.html index 8437307c2..d50546c16 100644 --- a/howto/maintain-git.html +++ b/howto/maintain-git.html @@ -1469,7 +1469,7 @@ $ git update-ref -d $mf/ai/topic</code></pre> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:41 PDT
+ 2021-04-02 15:11:40 PDT
</div>
</div>
</body>
diff --git a/howto/new-command.html b/howto/new-command.html index 2b71743fd..48b3e8b77 100644 --- a/howto/new-command.html +++ b/howto/new-command.html @@ -863,7 +863,7 @@ letter [PATCH 0/n]. <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:37 PDT
+ 2021-04-02 15:11:34 PDT
</div>
</div>
</body>
diff --git a/howto/rebase-from-internal-branch.html b/howto/rebase-from-internal-branch.html index a28150d4e..aa11a2f2d 100644 --- a/howto/rebase-from-internal-branch.html +++ b/howto/rebase-from-internal-branch.html @@ -895,7 +895,7 @@ the #1' commit.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:41 PDT
+ 2021-04-02 15:11:40 PDT
</div>
</div>
</body>
diff --git a/howto/rebuild-from-update-hook.html b/howto/rebuild-from-update-hook.html index 1721bca08..35d211e23 100644 --- a/howto/rebuild-from-update-hook.html +++ b/howto/rebuild-from-update-hook.html @@ -847,7 +847,7 @@ This is still crude and does not protect against simultaneous <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:41 PDT
+ 2021-04-02 15:11:39 PDT
</div>
</div>
</body>
diff --git a/howto/recover-corrupted-blob-object.html b/howto/recover-corrupted-blob-object.html index afadf506a..b9434df2d 100644 --- a/howto/recover-corrupted-blob-object.html +++ b/howto/recover-corrupted-blob-object.html @@ -880,7 +880,7 @@ thing.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:40 PDT
+ 2021-04-02 15:11:38 PDT
</div>
</div>
</body>
diff --git a/howto/recover-corrupted-object-harder.html b/howto/recover-corrupted-object-harder.html index 40b66dd9e..0d0ceb72c 100644 --- a/howto/recover-corrupted-object-harder.html +++ b/howto/recover-corrupted-object-harder.html @@ -1189,7 +1189,7 @@ int main(int argc, char **argv) <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:41 PDT
+ 2021-04-02 15:11:39 PDT
</div>
</div>
</body>
diff --git a/howto/revert-a-faulty-merge.html b/howto/revert-a-faulty-merge.html index 99fc1addd..83882d298 100644 --- a/howto/revert-a-faulty-merge.html +++ b/howto/revert-a-faulty-merge.html @@ -1025,7 +1025,7 @@ P---o---o---M---x---x---W---x---M2 <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:40 PDT
+ 2021-04-02 15:11:38 PDT
</div>
</div>
</body>
diff --git a/howto/revert-branch-rebase.html b/howto/revert-branch-rebase.html index e4c48b251..f56b5f077 100644 --- a/howto/revert-branch-rebase.html +++ b/howto/revert-branch-rebase.html @@ -907,7 +907,7 @@ Committed merge 7fb9b7262a1d1e0a47bbfdcbbcf50ce0635d3f8f <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:38 PDT
+ 2021-04-02 15:11:34 PDT
</div>
</div>
</body>
diff --git a/howto/separating-topic-branches.html b/howto/separating-topic-branches.html index f222f189e..290ea3dc1 100644 --- a/howto/separating-topic-branches.html +++ b/howto/separating-topic-branches.html @@ -841,7 +841,7 @@ o---o"master"</code></pre> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:40 PDT
+ 2021-04-02 15:11:37 PDT
</div>
</div>
</body>
diff --git a/howto/setup-git-server-over-http.html b/howto/setup-git-server-over-http.html index 82a0ea961..aa51d5e54 100644 --- a/howto/setup-git-server-over-http.html +++ b/howto/setup-git-server-over-http.html @@ -1071,7 +1071,7 @@ help diagnosing the problem, but removes security checks.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:39 PDT
+ 2021-04-02 15:11:36 PDT
</div>
</div>
</body>
diff --git a/howto/update-hook-example.html b/howto/update-hook-example.html index e4cfa6434..a1eb4832d 100644 --- a/howto/update-hook-example.html +++ b/howto/update-hook-example.html @@ -930,7 +930,7 @@ that JC can make non-fast-forward pushes on it.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:39 PDT
+ 2021-04-02 15:11:36 PDT
</div>
</div>
</body>
diff --git a/howto/use-git-daemon.html b/howto/use-git-daemon.html index f0f4b2c79..b63d8a61c 100644 --- a/howto/use-git-daemon.html +++ b/howto/use-git-daemon.html @@ -791,7 +791,7 @@ a good practice to put the paths after a "--" separator.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:39 PDT
+ 2021-04-02 15:11:36 PDT
</div>
</div>
</body>
diff --git a/howto/using-merge-subtree.html b/howto/using-merge-subtree.html index 7a48153ea..e64b0d9a1 100644 --- a/howto/using-merge-subtree.html +++ b/howto/using-merge-subtree.html @@ -848,7 +848,7 @@ Please note that if the other project merges from you, then it will <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:38 PDT
+ 2021-04-02 15:11:35 PDT
</div>
</div>
</body>
diff --git a/howto/using-signed-tag-in-pull-request.html b/howto/using-signed-tag-in-pull-request.html index 7cb4d5762..5e462a18c 100644 --- a/howto/using-signed-tag-in-pull-request.html +++ b/howto/using-signed-tag-in-pull-request.html @@ -952,7 +952,7 @@ as part of the merge commit.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-30 15:10:38 PDT
+ 2021-04-02 15:11:35 PDT
</div>
</div>
</body>
diff --git a/technical/api-index.html b/technical/api-index.html index 6b1ef283a..d820c3a20 100644 --- a/technical/api-index.html +++ b/technical/api-index.html @@ -759,6 +759,11 @@ documents them.</p></div> </li>
<li>
<p>
+<a href="api-simple-ipc.html">Simple-IPC API</a>
+</p>
+</li>
+<li>
+<p>
<a href="api-trace2.html">= Trace2 API</a>
</p>
</li>
@@ -770,7 +775,7 @@ documents them.</p></div> <div id="footer">
<div id="footer-text">
Last updated
- 2021-03-17 15:51:44 PDT
+ 2021-04-02 15:10:16 PDT
</div>
</div>
</body>
diff --git a/technical/api-index.txt b/technical/api-index.txt index b33cab950..b73de5539 100644 --- a/technical/api-index.txt +++ b/technical/api-index.txt @@ -10,6 +10,7 @@ documents them. * link:api-error-handling.html[Error reporting in git] * link:api-merge.html[merge API] * link:api-parse-options.html[parse-options API] +* link:api-simple-ipc.html[Simple-IPC API] * link:api-trace2.html[= Trace2 API] //////////////////////////////////////////////////////////////// // table of contents end diff --git a/technical/api-simple-ipc.html b/technical/api-simple-ipc.html new file mode 100644 index 000000000..d99956601 --- /dev/null +++ b/technical/api-simple-ipc.html @@ -0,0 +1,847 @@ +<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
+ "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+<head>
+<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
+<meta name="generator" content="AsciiDoc 9.0.0rc2" />
+<title>Simple-IPC API</title>
+<style type="text/css">
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+<body class="article">
+<div id="header">
+<h1>Simple-IPC API</h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="paragraph"><p>The Simple-IPC API is a collection of <code>ipc_</code> prefixed library routines
+and a basic communication protocol that allow an IPC-client process to
+send an application-specific IPC-request message to an IPC-server
+process and receive an application-specific IPC-response message.</p></div>
+<div class="paragraph"><p>Communication occurs over a named pipe on Windows and a Unix domain
+socket on other platforms. IPC-clients and IPC-servers rendezvous at
+a previously agreed-to application-specific pathname (which is outside
+the scope of this design) that is local to the computer system.</p></div>
+<div class="paragraph"><p>The IPC-server routines within the server application process create a
+thread pool to listen for connections and receive request messages
+from multiple concurrent IPC-clients. When received, these messages
+are dispatched up to the server application callbacks for handling.
+IPC-server routines then incrementally relay responses back to the
+IPC-client.</p></div>
+<div class="paragraph"><p>The IPC-client routines within a client application process connect
+to the IPC-server and send a request message and wait for a response.
+When received, the response is returned back the caller.</p></div>
+<div class="paragraph"><p>For example, the <code>fsmonitor--daemon</code> feature will be built as a server
+application on top of the IPC-server library routines. It will have
+threads watching for file system events and a thread pool waiting for
+client connections. Clients, such as <code>git status</code> will request a list
+of file system events since a point in time and the server will
+respond with a list of changed files and directories. The formats of
+the request and response are application-specific; the IPC-client and
+IPC-server routines treat them as opaque byte streams.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_comparison_with_sub_process_model">Comparison with sub-process model</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>The Simple-IPC mechanism differs from the existing <code>sub-process.c</code>
+model (Documentation/technical/long-running-process-protocol.txt) and
+used by applications like Git-LFS. In the LFS-style sub-process model
+the helper is started by the foreground process, communication happens
+via a pair of file descriptors bound to the stdin/stdout of the
+sub-process, the sub-process only serves the current foreground
+process, and the sub-process exits when the foreground process
+terminates.</p></div>
+<div class="paragraph"><p>In the Simple-IPC model the server is a very long-running service. It
+can service many clients at the same time and has a private socket or
+named pipe connection to each active client. It might be started
+(on-demand) by the current client process or it might have been
+started by a previous client or by the OS at boot time. The server
+process is not associated with a terminal and it persists after
+clients terminate. Clients do not have access to the stdin/stdout of
+the server process and therefore must communicate over sockets or
+named pipes.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_server_startup_and_shutdown">Server startup and shutdown</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>How an application server based upon IPC-server is started is also
+outside the scope of the Simple-IPC design and is a property of the
+application using it. For example, the server might be started or
+restarted during routine maintenance operations, or it might be
+started as a system service during the system boot-up sequence, or it
+might be started on-demand by a foreground Git command when needed.</p></div>
+<div class="paragraph"><p>Similarly, server shutdown is a property of the application using
+the simple-ipc routines. For example, the server might decide to
+shutdown when idle or only upon explicit request.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_simple_ipc_protocol">Simple-IPC protocol</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>The Simple-IPC protocol consists of a single request message from the
+client and an optional response message from the server. Both the
+client and server messages are unlimited in length and are terminated
+with a flush packet.</p></div>
+<div class="paragraph"><p>The pkt-line routines (Documentation/technical/protocol-common.txt)
+are used to simplify buffer management during message generation,
+transmission, and reception. A flush packet is used to mark the end
+of the message. This allows the sender to incrementally generate and
+transmit the message. It allows the receiver to incrementally receive
+the message in chunks and to know when they have received the entire
+message.</p></div>
+<div class="paragraph"><p>The actual byte format of the client request and server response
+messages are application specific. The IPC layer transmits and
+receives them as opaque byte buffers without any concern for the
+content within. It is the job of the calling application layer to
+understand the contents of the request and response messages.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_summary">Summary</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>Conceptually, the Simple-IPC protocol is similar to an HTTP REST
+request. Clients connect, make an application-specific and
+stateless request, receive an application-specific
+response, and disconnect. It is a one round trip facility for
+querying the server. The Simple-IPC routines hide the socket,
+named pipe, and thread pool details and allow the application
+layer to focus on the application at hand.</p></div>
+</div>
+</div>
+</div>
+<div id="footnotes"><hr /></div>
+<div id="footer">
+<div id="footer-text">
+Last updated
+ 2021-04-02 15:10:10 PDT
+</div>
+</div>
+</body>
+</html>
diff --git a/technical/api-simple-ipc.txt b/technical/api-simple-ipc.txt new file mode 100644 index 000000000..d79ad323e --- /dev/null +++ b/technical/api-simple-ipc.txt @@ -0,0 +1,105 @@ +Simple-IPC API +============== + +The Simple-IPC API is a collection of `ipc_` prefixed library routines +and a basic communication protocol that allow an IPC-client process to +send an application-specific IPC-request message to an IPC-server +process and receive an application-specific IPC-response message. + +Communication occurs over a named pipe on Windows and a Unix domain +socket on other platforms. IPC-clients and IPC-servers rendezvous at +a previously agreed-to application-specific pathname (which is outside +the scope of this design) that is local to the computer system. + +The IPC-server routines within the server application process create a +thread pool to listen for connections and receive request messages +from multiple concurrent IPC-clients. When received, these messages +are dispatched up to the server application callbacks for handling. +IPC-server routines then incrementally relay responses back to the +IPC-client. + +The IPC-client routines within a client application process connect +to the IPC-server and send a request message and wait for a response. +When received, the response is returned back the caller. + +For example, the `fsmonitor--daemon` feature will be built as a server +application on top of the IPC-server library routines. It will have +threads watching for file system events and a thread pool waiting for +client connections. Clients, such as `git status` will request a list +of file system events since a point in time and the server will +respond with a list of changed files and directories. The formats of +the request and response are application-specific; the IPC-client and +IPC-server routines treat them as opaque byte streams. + + +Comparison with sub-process model +--------------------------------- + +The Simple-IPC mechanism differs from the existing `sub-process.c` +model (Documentation/technical/long-running-process-protocol.txt) and +used by applications like Git-LFS. In the LFS-style sub-process model +the helper is started by the foreground process, communication happens +via a pair of file descriptors bound to the stdin/stdout of the +sub-process, the sub-process only serves the current foreground +process, and the sub-process exits when the foreground process +terminates. + +In the Simple-IPC model the server is a very long-running service. It +can service many clients at the same time and has a private socket or +named pipe connection to each active client. It might be started +(on-demand) by the current client process or it might have been +started by a previous client or by the OS at boot time. The server +process is not associated with a terminal and it persists after +clients terminate. Clients do not have access to the stdin/stdout of +the server process and therefore must communicate over sockets or +named pipes. + + +Server startup and shutdown +--------------------------- + +How an application server based upon IPC-server is started is also +outside the scope of the Simple-IPC design and is a property of the +application using it. For example, the server might be started or +restarted during routine maintenance operations, or it might be +started as a system service during the system boot-up sequence, or it +might be started on-demand by a foreground Git command when needed. + +Similarly, server shutdown is a property of the application using +the simple-ipc routines. For example, the server might decide to +shutdown when idle or only upon explicit request. + + +Simple-IPC protocol +------------------- + +The Simple-IPC protocol consists of a single request message from the +client and an optional response message from the server. Both the +client and server messages are unlimited in length and are terminated +with a flush packet. + +The pkt-line routines (Documentation/technical/protocol-common.txt) +are used to simplify buffer management during message generation, +transmission, and reception. A flush packet is used to mark the end +of the message. This allows the sender to incrementally generate and +transmit the message. It allows the receiver to incrementally receive +the message in chunks and to know when they have received the entire +message. + +The actual byte format of the client request and server response +messages are application specific. The IPC layer transmits and +receives them as opaque byte buffers without any concern for the +content within. It is the job of the calling application layer to +understand the contents of the request and response messages. + + +Summary +------- + +Conceptually, the Simple-IPC protocol is similar to an HTTP REST +request. Clients connect, make an application-specific and +stateless request, receive an application-specific +response, and disconnect. It is a one round trip facility for +querying the server. The Simple-IPC routines hide the socket, +named pipe, and thread pool details and allow the application +layer to focus on the application at hand. |