make filewatcher more robust

src/filewatcher/filewatch.h

@@ -0,0 +1,22 @@
+#ifndef FILEWATCH_H_
+#define FILEWATCH_H_
+
+#include "array/array.h"
+#include "filewatch_context.h"
+#include "types.h"
+
+struct hiFileWatcherContext;
+struct hiFileWatch;
+
+hiFileWatch *file_watch_find_by_wd(struct hiFileWatcherContext *ctx,
+                                         int wd, size_t *index);
+hiFileWatch *file_watch_find_by_path(struct hiFileWatcherContext *ctx,
+                                           const char *path,  size_t *index);
+
+HiloadResult file_watch_add(struct hiFileWatcherContext *ctx, u32 mask,
+                            const char *path);
+HiloadResult file_watch_remove(struct hiFileWatcherContext *ctx,
+                               const char *path);
+void file_watch_destroy_watches(struct hiFileWatcherContext *ctx);
+
+#endif // FILEWATCH_H_