class DirWatcher
Defined at line 106 of file ../../sdk/lib/device-watcher/cpp/device-watcher.h
DirWatcher can be used to detect when a file has been removed from the filesystem.
Example usage:
std::unique_ptr
<DirWatcher
> watcher;
zx_status_t status = DirWatcher::Create(dir_fd,
&watcher
);
...
// Trigger removal of file here.
...
status = watcher->WaitForRemoval(filename, deadline);
Public Methods
zx_status_t Create (int dir_fd, std::unique_ptr<DirWatcher> * out_dir_watcher)Creates a new |DirWatcher| instance to watch the directory represented by |dir_fd|.
This method does not take ownership of |dir_fd|.
Defined at line 49 of file ../../sdk/lib/device-watcher/cpp/device-watcher.cc
zx::result<DirWatcher> Create (fidl::UnownedClientEnd<fuchsia_io::Directory> dir)Creates a new |DirWatcher| instance to watch the directory |dir| is connected to..
Defined at line 40 of file ../../sdk/lib/device-watcher/cpp/device-watcher.cc
zx_status_t WaitForRemoval (std::string_view filename, zx::duration timeout)Returns ZX_OK if |filename| is removed from the directory before the given timeout elapses.
If no filename is specified, this will wait for any file in the directory to be removed.
TODO(https://fxbug.dev/42068369): Remove `timeout`.
Defined at line 61 of file ../../sdk/lib/device-watcher/cpp/device-watcher.cc
void DirWatcher (fidl::ClientEnd<fuchsia_io::DirectoryWatcher> client)Users should call Create instead. This is public for make_unique.
Defined at line 116 of file ../../sdk/lib/device-watcher/cpp/device-watcher.h