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https://github.com/git-for-windows/git.git
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32501c9a98
Teach the fsmonitor--daemon to CD outside of the worktree before starting up. The common Git startup mechanism causes the CWD of the daemon process to be in the root of the worktree. On Windows, this causes the daemon process to hold a locked handle on the CWD and prevents other processes from moving or deleting the worktree while the daemon is running. CD to HOME before entering main event loops. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
#ifndef FSMONITOR_DAEMON_H
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#define FSMONITOR_DAEMON_H
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#ifdef HAVE_FSMONITOR_DAEMON_BACKEND
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#include "cache.h"
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#include "dir.h"
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#include "run-command.h"
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#include "simple-ipc.h"
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#include "thread-utils.h"
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struct fsmonitor_batch;
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struct fsmonitor_token_data;
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/*
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* Create a new batch of path(s). The returned batch is considered
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* private and not linked into the fsmonitor daemon state. The caller
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* should fill this batch with one or more paths and then publish it.
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*/
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struct fsmonitor_batch *fsmonitor_batch__new(void);
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/*
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* Free the list of batches starting with this one.
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*/
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void fsmonitor_batch__free_list(struct fsmonitor_batch *batch);
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/*
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* Add this path to this batch of modified files.
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*
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* The batch should be private and NOT (yet) linked into the fsmonitor
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* daemon state and therefore not yet visible to worker threads and so
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* no locking is required.
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*/
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void fsmonitor_batch__add_path(struct fsmonitor_batch *batch, const char *path);
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struct fsmonitor_daemon_backend_data; /* opaque platform-specific data */
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struct fsmonitor_daemon_state {
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pthread_t listener_thread;
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pthread_mutex_t main_lock;
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struct strbuf path_worktree_watch;
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struct strbuf path_gitdir_watch;
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int nr_paths_watching;
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struct fsmonitor_token_data *current_token_data;
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struct strbuf path_cookie_prefix;
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pthread_cond_t cookies_cond;
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int cookie_seq;
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struct hashmap cookies;
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int error_code;
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struct fsmonitor_daemon_backend_data *backend_data;
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struct ipc_server_data *ipc_server_data;
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struct strbuf path_ipc;
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};
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/*
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* Pathname classifications.
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*
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* The daemon classifies the pathnames that it receives from file
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* system notification events into the following categories and uses
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* that to decide whether clients are told about them. (And to watch
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* for file system synchronization events.)
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*
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* The client should only care about paths within the working
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* directory proper (inside the working directory and not ".git" nor
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* inside of ".git/"). That is, the client has read the index and is
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* asking for a list of any paths in the working directory that have
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* been modified since the last token. The client does not care about
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* file system changes within the .git directory (such as new loose
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* objects or packfiles). So the client will only receive paths that
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* are classified as IS_WORKDIR_PATH.
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*
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* The daemon uses the IS_DOT_GIT and IS_GITDIR internally to mean the
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* exact ".git" directory or GITDIR. If the daemon receives a delete
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* event for either of these directories, it will automatically
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* shutdown, for example.
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*
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* Note that the daemon DOES NOT explicitly watch nor special case the
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* ".git/index" file. The daemon does not read the index and does not
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* have any internal index-relative state. The daemon only collects
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* the set of modified paths within the working directory.
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*/
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enum fsmonitor_path_type {
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IS_WORKDIR_PATH = 0,
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IS_DOT_GIT,
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IS_INSIDE_DOT_GIT,
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IS_INSIDE_DOT_GIT_WITH_COOKIE_PREFIX,
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IS_GITDIR,
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IS_INSIDE_GITDIR,
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IS_INSIDE_GITDIR_WITH_COOKIE_PREFIX,
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IS_OUTSIDE_CONE,
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};
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/*
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* Classify a pathname relative to the root of the working directory.
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*/
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enum fsmonitor_path_type fsmonitor_classify_path_workdir_relative(
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const char *relative_path);
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/*
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* Classify a pathname relative to a <gitdir> that is external to the
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* worktree directory.
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*/
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enum fsmonitor_path_type fsmonitor_classify_path_gitdir_relative(
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const char *relative_path);
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/*
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* Classify an absolute pathname received from a filesystem event.
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*/
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enum fsmonitor_path_type fsmonitor_classify_path_absolute(
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struct fsmonitor_daemon_state *state,
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const char *path);
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/*
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* Prepend the this batch of path(s) onto the list of batches associated
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* with the current token. This makes the batch visible to worker threads.
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*
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* The caller no longer owns the batch and must not free it.
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*
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* Wake up the client threads waiting on these cookies.
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*/
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void fsmonitor_publish(struct fsmonitor_daemon_state *state,
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struct fsmonitor_batch *batch,
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const struct string_list *cookie_names);
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/*
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* If the platform-specific layer loses sync with the filesystem,
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* it should call this to invalidate cached data and abort waiting
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* threads.
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*/
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void fsmonitor_force_resync(struct fsmonitor_daemon_state *state);
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#endif /* HAVE_FSMONITOR_DAEMON_BACKEND */
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#endif /* FSMONITOR_DAEMON_H */
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