libdispatch-703.30.5.tar.gz

[apple/libdispatch.git] / private / io_private.h

diff --git a/private/io_private.h b/private/io_private.h
index 4a00ee0046c7d71535014016091c612063b405ed..0bb1e3b25f25feaec634baa80103c653be037608 100644 (file)
--- a/private/io_private.h
+++ b/private/io_private.h
@@ -32,6 +32,8 @@
 #include <dispatch/base.h> // for HeaderDoc
 #endif
 
+DISPATCH_ASSUME_NONNULL_BEGIN
+
 __BEGIN_DECLS
 
 /*!
@@ -83,8 +85,8 @@ void
 dispatch_read_f(dispatch_fd_t fd,
        size_t length,
        dispatch_queue_t queue,
-       void *context,
-       void (*handler)(void *context, dispatch_data_t data, int error));
+       void *_Nullable context,
+       void (*handler)(void *_Nullable context, dispatch_data_t data, int error));
 
 /*!
  * @function dispatch_write_f
@@ -126,8 +128,9 @@ void
 dispatch_write_f(dispatch_fd_t fd,
        dispatch_data_t data,
        dispatch_queue_t queue,
-       void *context,
-       void (*handler)(void *context, dispatch_data_t data, int error));
+       void *_Nullable context,
+       void (*handler)(void *_Nullable context, dispatch_data_t _Nullable data,
+                       int error));
 
 /*!
  * @function dispatch_io_create_f
@@ -164,8 +167,8 @@ dispatch_io_t
 dispatch_io_create_f(dispatch_io_type_t type,
        dispatch_fd_t fd,
        dispatch_queue_t queue,
-       void *context,
-       void (*cleanup_handler)(void *context, int error));
+       void *_Nullable context,
+       void (*cleanup_handler)(void *_Nullable context, int error));
 
 /*!
  * @function dispatch_io_create_with_path_f
@@ -204,8 +207,8 @@ dispatch_io_t
 dispatch_io_create_with_path_f(dispatch_io_type_t type,
        const char *path, int oflag, mode_t mode,
        dispatch_queue_t queue,
-       void *context,
-       void (*cleanup_handler)(void *context, int error));
+       void *_Nullable context,
+       void (*cleanup_handler)(void *_Nullable context, int error));
 
 /*!
  * @function dispatch_io_create_with_io_f
@@ -248,8 +251,8 @@ dispatch_io_t
 dispatch_io_create_with_io_f(dispatch_io_type_t type,
        dispatch_io_t io,
        dispatch_queue_t queue,
-       void *context,
-       void (*cleanup_handler)(void *context, int error));
+       void *_Nullable context,
+       void (*cleanup_handler)(void *_Nullable context, int error));
 
 /*!
  * @typedef dispatch_io_handler_function_t
@@ -260,8 +263,8 @@ dispatch_io_create_with_io_f(dispatch_io_type_t type,
  * @param data         The data object to be handled.
  * @param error                An errno condition for the operation.
  */
-typedef void (*dispatch_io_handler_function_t)(void *context, bool done,
-               dispatch_data_t data, int error);
+typedef void (*dispatch_io_handler_function_t)(void *_Nullable context,
+       bool done, dispatch_data_t _Nullable data, int error);
 
 /*!
  * @function dispatch_io_read_f
@@ -316,7 +319,7 @@ dispatch_io_read_f(dispatch_io_t channel,
        off_t offset,
        size_t length,
        dispatch_queue_t queue,
-       void *context,
+       void *_Nullable context,
        dispatch_io_handler_function_t io_handler);
 
 /*!
@@ -373,7 +376,7 @@ dispatch_io_write_f(dispatch_io_t channel,
        off_t offset,
        dispatch_data_t data,
        dispatch_queue_t queue,
-       void *context,
+       void *_Nullable context,
        dispatch_io_handler_function_t io_handler);
 
 /*!
@@ -403,9 +406,11 @@ __OSX_AVAILABLE_STARTING(__MAC_10_9,__IPHONE_7_0)
 DISPATCH_EXPORT DISPATCH_NONNULL1 DISPATCH_NONNULL3 DISPATCH_NOTHROW
 void
 dispatch_io_barrier_f(dispatch_io_t channel,
-       void *context,
+       void *_Nullable context,
        dispatch_function_t barrier);
 
 __END_DECLS
 
+DISPATCH_ASSUME_NONNULL_END
+
 #endif /* __DISPATCH_IO_PRIVATE__ */