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fsmonitor--daemon: add a built-in fsmonitor daemon

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Create a built-in file system monitoring daemon that can be used by
the existing `fsmonitor` feature (protocol API and index extension)
to improve the performance of various Git commands, such as `status`.

The `fsmonitor--daemon` feature builds upon the `Simple IPC` API and
provides an alternative to hook access to existing fsmonitors such
as `watchman`.

This commit merely adds the new command without any functionality.

Co-authored-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff Hostetler 2022-03-25 18:02:49 +00:00 committed by Junio C Hamano
parent 3248486920
commit 16d9d6175b
5 changed files with 50 additions and 0 deletions
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1
.gitignore vendored
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@ -72,6 +72,7 @@
/git-format-patch
/git-fsck
/git-fsck-objects
/git-fsmonitor--daemon
/git-gc
/git-get-tar-commit-id
/git-grep

1
Makefile
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@ -1114,6 +1114,7 @@ BUILTIN_OBJS += builtin/fmt-merge-msg.o
BUILTIN_OBJS += builtin/for-each-ref.o
BUILTIN_OBJS += builtin/for-each-repo.o
BUILTIN_OBJS += builtin/fsck.o
BUILTIN_OBJS += builtin/fsmonitor--daemon.o
BUILTIN_OBJS += builtin/gc.o
BUILTIN_OBJS += builtin/get-tar-commit-id.o
BUILTIN_OBJS += builtin/grep.o

1
builtin.h
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@ -159,6 +159,7 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix);
int cmd_for_each_repo(int argc, const char **argv, const char *prefix);
int cmd_format_patch(int argc, const char **argv, const char *prefix);
int cmd_fsck(int argc, const char **argv, const char *prefix);
int cmd_fsmonitor__daemon(int argc, const char **argv, const char *prefix);
int cmd_gc(int argc, const char **argv, const char *prefix);
int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix);
int cmd_grep(int argc, const char **argv, const char *prefix);

46
builtin/fsmonitor--daemon.c Normal file
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@ -0,0 +1,46 @@
#include "builtin.h"
#include "config.h"
#include "parse-options.h"
#include "fsmonitor.h"
#include "fsmonitor-ipc.h"
#include "simple-ipc.h"
#include "khash.h"
static const char * const builtin_fsmonitor__daemon_usage[] = {
NULL
};
#ifdef HAVE_FSMONITOR_DAEMON_BACKEND
int cmd_fsmonitor__daemon(int argc, const char **argv, const char *prefix)
{
const char *subcmd;
struct option options[] = {
OPT_END()
};
git_config(git_default_config, NULL);
argc = parse_options(argc, argv, prefix, options,
builtin_fsmonitor__daemon_usage, 0);
if (argc != 1)
usage_with_options(builtin_fsmonitor__daemon_usage, options);
subcmd = argv[0];
die(_("Unhandled subcommand '%s'"), subcmd);
}
#else
int cmd_fsmonitor__daemon(int argc, const char **argv, const char *prefix)
{
struct option options[] = {
OPT_END()
};
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_fsmonitor__daemon_usage, options);
die(_("fsmonitor--daemon not supported on this platform"));
}
#endif

1
git.c
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@ -537,6 +537,7 @@ static struct cmd_struct commands[] = {
{ "format-patch", cmd_format_patch, RUN_SETUP },
{ "fsck", cmd_fsck, RUN_SETUP },
{ "fsck-objects", cmd_fsck, RUN_SETUP },
{ "fsmonitor--daemon", cmd_fsmonitor__daemon, RUN_SETUP },
{ "gc", cmd_gc, RUN_SETUP },
{ "get-tar-commit-id", cmd_get_tar_commit_id, NO_PARSEOPT },
{ "grep", cmd_grep, RUN_SETUP_GENTLY },