From: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx> The previous patch has the logic to clear bits in 'WAMA' bitmap. This patch has logic to set bits as told by watchman. The missing bit, _using_ these bits, are not here yet. A lot of this code is written by David Turner originally, mostly from [1]. I'm just copying and polishing it a bit. [1] http://article.gmane.org/gmane.comp.version-control.git/248006 Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx> Signed-off-by: David Turner <dturner@xxxxxxxxxxxxxxxx> --- Makefile | 12 +++++ cache.h | 1 + config.c | 5 ++ configure.ac | 8 ++++ environment.c | 3 ++ watchman-support.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++ watchman-support.h | 7 +++ 7 files changed, 171 insertions(+) create mode 100644 watchman-support.c create mode 100644 watchman-support.h diff --git a/Makefile b/Makefile index c8be0e7..65ab0f4 100644 --- a/Makefile +++ b/Makefile @@ -451,6 +451,7 @@ MSGFMT = msgfmt CURL_CONFIG = curl-config PTHREAD_LIBS = -lpthread PTHREAD_CFLAGS = +WATCHMAN_LIBS = GCOV = gcov export TCL_PATH TCLTK_PATH @@ -1416,6 +1417,13 @@ else LIB_OBJS += thread-utils.o endif +ifdef USE_WATCHMAN + LIB_H += watchman-support.h + LIB_OBJS += watchman-support.o + WATCHMAN_LIBS = -lwatchman + BASIC_CFLAGS += -DUSE_WATCHMAN +endif + ifdef HAVE_PATHS_H BASIC_CFLAGS += -DHAVE_PATHS_H endif @@ -2025,6 +2033,9 @@ git-remote-testsvn$X: remote-testsvn.o GIT-LDFLAGS $(GITLIBS) $(VCSSVN_LIB) $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS) \ $(VCSSVN_LIB) +git-index-helper$X: index-helper.o GIT-LDFLAGS $(GITLIBS) + $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS) $(WATCHMAN_LIBS) + $(REMOTE_CURL_ALIASES): $(REMOTE_CURL_PRIMARY) $(QUIET_LNCP)$(RM) $@ && \ ln $< $@ 2>/dev/null || \ @@ -2164,6 +2175,7 @@ GIT-BUILD-OPTIONS: FORCE @echo NO_PYTHON=\''$(subst ','\'',$(subst ','\'',$(NO_PYTHON)))'\' >>$@+ @echo NO_UNIX_SOCKETS=\''$(subst ','\'',$(subst ','\'',$(NO_UNIX_SOCKETS)))'\' >>$@+ @echo NO_MMAP=\''$(subst ','\'',$(subst ','\'',$(NO_MMAP)))'\' >>$@+ + @echo USE_WATCHMAN=\''$(subst ','\'',$(subst ','\'',$(USE_WATCHMAN)))'\' >>$@+ ifdef TEST_OUTPUT_DIRECTORY @echo TEST_OUTPUT_DIRECTORY=\''$(subst ','\'',$(subst ','\'',$(TEST_OUTPUT_DIRECTORY)))'\' >>$@+ endif diff --git a/cache.h b/cache.h index f4f7eef..37f211b 100644 --- a/cache.h +++ b/cache.h @@ -687,6 +687,7 @@ extern char *git_replace_ref_base; extern int fsync_object_files; extern int core_preload_index; +extern int core_watchman_sync_timeout; extern int core_apply_sparse_checkout; extern int precomposed_unicode; extern int protect_hfs; diff --git a/config.c b/config.c index 9ba40bc..e6dc141 100644 --- a/config.c +++ b/config.c @@ -882,6 +882,11 @@ static int git_default_core_config(const char *var, const char *value) return 0; } + if (!strcmp(var, "core.watchmansynctimeout")) { + core_watchman_sync_timeout = git_config_int(var, value); + return 0; + } + if (!strcmp(var, "core.createobject")) { if (!strcmp(value, "rename")) object_creation_mode = OBJECT_CREATION_USES_RENAMES; diff --git a/configure.ac b/configure.ac index 0cd9f46..334d63b 100644 --- a/configure.ac +++ b/configure.ac @@ -1099,6 +1099,14 @@ AC_COMPILE_IFELSE([BSD_SYSCTL_SRC], HAVE_BSD_SYSCTL=]) GIT_CONF_SUBST([HAVE_BSD_SYSCTL]) +# +# Check for watchman client library + +AC_CHECK_LIB([watchman], [watchman_connect], + [USE_WATCHMAN=YesPlease], + [USE_WATCHMAN=]) +GIT_CONF_SUBST([USE_WATCHMAN]) + ## Other checks. # Define USE_PIC if you need the main git objects to be built with -fPIC # in order to build and link perl/Git.so. x86-64 seems to need this. diff --git a/environment.c b/environment.c index 6dec9d0..35e03c7 100644 --- a/environment.c +++ b/environment.c @@ -94,6 +94,9 @@ int core_preload_index = 1; */ int ignore_untracked_cache_config; +int core_watchman_sync_timeout = 300; + + /* This is set by setup_git_dir_gently() and/or git_default_config() */ char *git_work_tree_cfg; static char *work_tree; diff --git a/watchman-support.c b/watchman-support.c new file mode 100644 index 0000000..b168e88 --- /dev/null +++ b/watchman-support.c @@ -0,0 +1,135 @@ +#include "cache.h" +#include "watchman-support.h" +#include "strbuf.h" +#include "dir.h" +#include <watchman.h> + +static struct watchman_query *make_query(const char *last_update) +{ + struct watchman_query *query = watchman_query(); + watchman_query_set_fields(query, WATCHMAN_FIELD_NAME | + WATCHMAN_FIELD_EXISTS | + WATCHMAN_FIELD_NEWER); + watchman_query_set_empty_on_fresh(query, 1); + query->sync_timeout = core_watchman_sync_timeout; + if (*last_update) + watchman_query_set_since_oclock(query, last_update); + return query; +} + +static struct watchman_query_result* query_watchman( + struct index_state *istate, struct watchman_connection *connection, + const char *fs_path, const char *last_update) +{ + struct watchman_error wm_error; + struct watchman_query *query; + struct watchman_expression *expr; + struct watchman_query_result *result; + + query = make_query(last_update); + expr = watchman_true_expression(); + result = watchman_do_query(connection, fs_path, query, expr, &wm_error); + watchman_free_query(query); + watchman_free_expression(expr); + + if (!result) + warning("Watchman query error: %s (at %s)", + wm_error.message, + *last_update ? last_update : "the beginning"); + + return result; +} + +static void update_index(struct index_state *istate, + struct watchman_query_result *result) +{ + int i; + + if (result->is_fresh_instance) { + /* let refresh clear them later */ + for (i = 0; i < istate->cache_nr; i++) + istate->cache[i]->ce_flags |= CE_WATCHMAN_DIRTY; + goto done; + } + + for (i = 0; i < result->nr; i++) { + struct watchman_stat *wm = result->stats + i; + int pos; + + if (S_ISDIR(wm->mode) || + !strncmp(wm->name, ".git/", 5) || + strstr(wm->name, "/.git/")) + continue; + + pos = index_name_pos(istate, wm->name, strlen(wm->name)); + if (pos < 0) { + if (istate->untracked) { + char *name = xstrdup(wm->name); + char *dname = dirname(name); + + /* + * dirname() returns '.' for the root, + * but we call it ''. + */ + if (dname[0] == '.' && dname[1] == 0) + string_list_append(&istate->untracked->invalid_untracked, ""); + else + string_list_append(&istate->untracked->invalid_untracked, + dname); + free(name); + } + continue; + } + /* FIXME: ignore staged entries and gitlinks too? */ + + istate->cache[pos]->ce_flags |= CE_WATCHMAN_DIRTY; + } + +done: + free(istate->last_update); + istate->last_update = xstrdup(result->clock); + istate->cache_changed |= WATCHMAN_CHANGED; + if (istate->untracked) + string_list_remove_duplicates(&istate->untracked->invalid_untracked, 0); +} + +int check_watchman(struct index_state *istate) +{ + struct watchman_error wm_error; + struct watchman_connection *connection; + struct watchman_query_result *result; + const char *fs_path; + struct timeval timeout; + /* + * Convert core_watchman_sync_timeout, in milliseconds, to + * struct timeval, in seconds and microseconds. + */ + + fs_path = get_git_work_tree(); + if (!fs_path) + return -1; + + timeout.tv_sec = core_watchman_sync_timeout / 1000; + timeout.tv_usec = (core_watchman_sync_timeout % 1000) * 1000; + connection = watchman_connect(timeout, &wm_error); + + if (!connection) { + warning("Watchman watch error: %s", wm_error.message); + return -1; + } + + if (watchman_watch(connection, fs_path, &wm_error)) { + warning("Watchman watch error: %s", wm_error.message); + watchman_connection_close(connection); + return -1; + } + + + result = query_watchman(istate, connection, fs_path, istate->last_update); + watchman_connection_close(connection); + if (!result) + return -1; + update_index(istate, result); + watchman_free_query_result(result); + return 0; +} diff --git a/watchman-support.h b/watchman-support.h new file mode 100644 index 0000000..ee1ef2c --- /dev/null +++ b/watchman-support.h @@ -0,0 +1,7 @@ +#ifndef WATCHMAN_SUPPORT_H +#define WATCHMAN_SUPPORT_H + +struct index_state; +int check_watchman(struct index_state *index); + +#endif /* WATCHMAN_SUPPORT_H */ -- 2.4.2.767.g62658d5-twtrsrc -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html