netstar pushed a commit to branch master.
http://git.enlightenment.org/core/efl.git/commit/?id=44425e748997a7ed3e34537dc396accfd5ce8981
commit 44425e748997a7ed3e34537dc396accfd5ce8981
Author: Alastair Poole <nets...@gmail.com>
Date: Sun Jan 31 14:45:46 2021 +0000
ecore_file_monitor: add kevent backend.
Summary:
This is a very simple kevent backend, very similar to the eio_monitor
implementation. On BSD systems, some core features within in E and
other applications are always using the poll engine, which is not
ideal. This is better, and simpler.
Reviewers: devilhorns, raster, bu5hm4n, vtorri
Reviewed By: vtorri
Subscribers: vtorri, cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D12239
---
src/lib/ecore_file/ecore_file_monitor_kevent.c | 290 +++++++++++++++++++++++++
src/lib/ecore_file/meson.build | 2 +
2 files changed, 292 insertions(+)
diff --git a/src/lib/ecore_file/ecore_file_monitor_kevent.c
b/src/lib/ecore_file/ecore_file_monitor_kevent.c
new file mode 100644
index 0000000000..e8c4c1e238
--- /dev/null
+++ b/src/lib/ecore_file/ecore_file_monitor_kevent.c
@@ -0,0 +1,290 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "ecore_file_private.h"
+
+#define KEVENT_NUM_EVENTS 5
+
+typedef struct _Ecore_File_Monitor_Kevent Ecore_File_Monitor_Kevent;
+
+#define ECORE_FILE_MONITOR_KEVENT(x) ((Ecore_File_Monitor_Kevent *)(x))
+
+struct _Ecore_File_Monitor_Kevent
+{
+ Ecore_File_Monitor monitor;
+ Eina_List *prev;
+ int fd;
+};
+
+typedef struct _File_Info File_Info;
+struct _File_Info
+{
+ const char *path;
+ Eina_Stat st;
+};
+
+static Ecore_Fd_Handler *_kevent_fdh = NULL;
+static Eina_Hash *_kevent_monitors = NULL;
+
+static Eina_Bool _ecore_file_monitor_kevent_handler(void *data,
Ecore_Fd_Handler *fdh);
+static int
_ecore_file_monitor_kevent_monitor(Ecore_File_Monitor *em, const char *path);
+static void _ecore_file_monitor_kevent_find(Ecore_File_Monitor
*em);
+static void _ecore_file_monitor_kevent_hash_del_cb(void *data);
+static Eina_List * _ecore_file_monitor_kevent_ls(const char
*directory);
+static void _ecore_file_monitor_kevent_ls_free(Eina_List *);
+
+int
+ecore_file_monitor_backend_init(void)
+{
+ int fd;
+
+ if (_kevent_fdh != NULL) return 0;
+
+ fd = kqueue();
+ if (fd < 0)
+ return 0;
+
+ _kevent_fdh = ecore_main_fd_handler_add(fd, ECORE_FD_READ,
_ecore_file_monitor_kevent_handler,
+ NULL, NULL, NULL);
+ if (!_kevent_fdh)
+ {
+ close(fd);
+ return 0;
+ }
+
+ _kevent_monitors =
eina_hash_int32_new(_ecore_file_monitor_kevent_hash_del_cb);
+ return 1;
+}
+
+int
+ecore_file_monitor_backend_shutdown(void)
+{
+ int fd;
+
+ if (!_kevent_fdh) return 1;
+
+ eina_hash_free(_kevent_monitors);
+
+ fd = ecore_main_fd_handler_fd_get(_kevent_fdh);
+ ecore_main_fd_handler_del(_kevent_fdh);
+ _kevent_fdh = NULL;
+
+ if (fd != -1)
+ close(fd);
+
+ return 1;
+}
+
+Ecore_File_Monitor *
+ecore_file_monitor_backend_add(const char *path,
+ void (*func) (void *data, Ecore_File_Monitor
*em,
+ Ecore_File_Event event,
+ const char *path),
+ void *data)
+{
+ Ecore_File_Monitor *em;
+ char *path2;
+ size_t len;
+
+ if (!path) return NULL;
+ if (!func) return NULL;
+
+ em = (Ecore_File_Monitor *)calloc(1, sizeof(Ecore_File_Monitor_Kevent));
+ if (!em) return NULL;
+
+ em->func = func;
+ em->data = data;
+
+ len = strlen(path);
+ path2 = alloca(len + 1);
+ strcpy(path2, path);
+ if (path2[len - 1] == '/' && strcmp(path2, "/")) path2[len - 1] = 0;
+ em->path = eina_stringshare_add(path2);
+
+ if (!_ecore_file_monitor_kevent_monitor(em, em->path))
+ return NULL;
+
+ return em;
+}
+
+static Eina_List *
+_ecore_file_monitor_kevent_ls(const char *directory)
+{
+ Eina_Iterator *it;
+ Eina_File_Direct_Info *info;
+ Eina_List *files = NULL;
+
+ it = eina_file_direct_ls(directory);
+ if (!it) return NULL;
+
+ EINA_ITERATOR_FOREACH(it, info)
+ {
+ File_Info *file = malloc(sizeof(File_Info));
+ if (eina_file_statat(eina_iterator_container_get(it), info, &file->st))
+ {
+ free(file);
+ continue;
+ }
+ file->path = eina_stringshare_add(info->path);
+ files = eina_list_append(files, file);
+ }
+
+ eina_iterator_free(it);
+
+ return files;
+}
+
+static void
+_ecore_file_monitor_kevent_ls_free(Eina_List *list)
+{
+ File_Info *file;
+
+ EINA_LIST_FREE(list, file)
+ {
+ eina_stringshare_del(file->path);
+ free(file);
+ }
+}
+
+static void
+_ecore_file_monitor_kevent_hash_del_cb(void *data)
+{
+ Ecore_File_Monitor *em = data;
+
+ if (ECORE_FILE_MONITOR_KEVENT(em)->fd >= 0)
+ close(ECORE_FILE_MONITOR_KEVENT(em)->fd);
+ eina_stringshare_del(em->path);
+ _ecore_file_monitor_kevent_ls_free(ECORE_FILE_MONITOR_KEVENT(em)->prev);
+
+ free(em);
+}
+
+void
+ecore_file_monitor_backend_del(Ecore_File_Monitor *em)
+{
+ eina_hash_del(_kevent_monitors, &(ECORE_FILE_MONITOR_KEVENT(em)->fd), em);
+}
+
+static Eina_Bool
+_ecore_file_monitor_kevent_handler(void *data EINA_UNUSED, Ecore_Fd_Handler
*fdh)
+{
+ Ecore_File_Monitor *em;
+ struct kevent evs[KEVENT_NUM_EVENTS];
+ int fd;
+ const struct timespec timeout = { 0, 0 };
+
+ fd = ecore_main_fd_handler_fd_get(fdh);
+ if (fd < 0) return ECORE_CALLBACK_RENEW;
+
+ int res = kevent(fd, 0, 0, evs, KEVENT_NUM_EVENTS, &timeout);
+ for (int i = 0; i < res; i++)
+ {
+ em = eina_hash_find(_kevent_monitors, &evs[i].ident);
+ if (evs[i].fflags & NOTE_DELETE)
+ {
+ em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
+ }
+ if ((evs[i].fflags & NOTE_WRITE) || (evs[i].fflags & NOTE_ATTRIB))
+ {
+ _ecore_file_monitor_kevent_find(em);
+ }
+ }
+
+ return ECORE_CALLBACK_RENEW;
+}
+
+static void
+_ecore_file_monitor_kevent_find(Ecore_File_Monitor *em)
+{
+ Eina_List *l, *l2;
+ File_Info *file, *file2;
+ Eina_List *files;
+
+ files = _ecore_file_monitor_kevent_ls(em->path);
+
+ EINA_LIST_FOREACH(ECORE_FILE_MONITOR_KEVENT(em)->prev, l, file)
+ {
+ Eina_Bool exists = EINA_FALSE;
+ EINA_LIST_FOREACH(files, l2, file2)
+ {
+ if (file->st.ino == file2->st.ino)
+ {
+ if (file->path == file2->path)
+ exists = EINA_TRUE;
+
+ if (file->st.mtime != file2->st.mtime)
+ em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED,
file->path);
+ }
+ }
+
+ if (!exists)
+ {
+ if (S_ISDIR(file->st.mode))
+ em->func(em->data, em, ECORE_FILE_EVENT_DELETED_DIRECTORY,
file->path);
+ else
+ em->func(em->data, em, ECORE_FILE_EVENT_DELETED_FILE,
file->path);
+ }
+ }
+
+ EINA_LIST_FOREACH(files, l, file)
+ {
+ Eina_Bool exists = EINA_FALSE;
+ EINA_LIST_FOREACH(ECORE_FILE_MONITOR_KEVENT(em)->prev, l2, file2)
+ {
+ if ((file->path == file2->path) && (file->st.ino ==
file2->st.ino))
+ {
+ exists = EINA_TRUE;
+ break;
+ }
+ }
+
+ if (!exists)
+ {
+ if (S_ISDIR(file->st.mode))
+ em->func(em->data, em, ECORE_FILE_EVENT_CREATED_DIRECTORY,
file->path);
+ else
+ em->func(em->data, em, ECORE_FILE_EVENT_CREATED_FILE,
file->path);
+ }
+ }
+
+ _ecore_file_monitor_kevent_ls_free(ECORE_FILE_MONITOR_KEVENT(em)->prev);
+ ECORE_FILE_MONITOR_KEVENT(em)->prev = files;
+}
+
+static int
+_ecore_file_monitor_kevent_monitor(Ecore_File_Monitor *em, const char *path)
+{
+ struct kevent ev;
+ int fd, res = 0;
+
+ if ((!ecore_file_exists(path)) || (!ecore_file_is_dir(path)))
+ return 0;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ {
+ INF("open failed, %s", strerror(errno));
+ ecore_file_monitor_backend_del(em);
+ return 0;
+ }
+
+ eina_file_close_on_exec(fd, EINA_TRUE);
+
+ ECORE_FILE_MONITOR_KEVENT(em)->fd = fd;
+ ECORE_FILE_MONITOR_KEVENT(em)->prev =
_ecore_file_monitor_kevent_ls(em->path);
+
+ eina_hash_direct_add(_kevent_monitors,
&(ECORE_FILE_MONITOR_KEVENT(em)->fd), em);
+
+ EV_SET(&ev, fd, EVFILT_VNODE, EV_ADD | EV_CLEAR,
+ NOTE_DELETE | NOTE_WRITE | NOTE_ATTRIB, 0, NULL);
+ res = kevent(ecore_main_fd_handler_fd_get(_kevent_fdh), &ev, 1, 0, 0, 0);
+ if (res)
+ eina_hash_del(_kevent_monitors, &(ECORE_FILE_MONITOR_KEVENT(em)->fd), em);
+
+ return 1;
+}
diff --git a/src/lib/ecore_file/meson.build b/src/lib/ecore_file/meson.build
index 9e0212d6c0..a25d98dffb 100644
--- a/src/lib/ecore_file/meson.build
+++ b/src/lib/ecore_file/meson.build
@@ -14,6 +14,8 @@ if sys_windows == true
ecore_file_src += files([ 'ecore_file_monitor_win32.c'])
elif sys_linux == true
ecore_file_src += files([ 'ecore_file_monitor_inotify.c'])
+elif sys_bsd == true
+ ecore_file_src += files([ 'ecore_file_monitor_kevent.c'])
else
ecore_file_src += files([ 'ecore_file_monitor_poll.c'])
endif
--
