[Xen-devel] [PATCH v7 01/11] qapi/error: add (Error **errp) cleaning APIs

[Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxx>]

Add functions to clean Error **errp: call corresponding Error *err
cleaning function an set pointer to NULL.

New functions:
  error_free_errp
  error_report_errp
  warn_report_errp

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxx>
Reviewed-by: Greg Kurz <groug@xxxxxxxx>
Reviewed-by: Eric Blake <eblake@xxxxxxxxxx>
---

CC: Eric Blake <eblake@xxxxxxxxxx>
CC: Kevin Wolf <kwolf@xxxxxxxxxx>
CC: Max Reitz <mreitz@xxxxxxxxxx>
CC: Greg Kurz <groug@xxxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: Anthony Perard <anthony.perard@xxxxxxxxxx>
CC: Paul Durrant <paul@xxxxxxx>
CC: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
CC: "Philippe Mathieu-Daudé" <philmd@xxxxxxxxxx>
CC: Laszlo Ersek <lersek@xxxxxxxxxx>
CC: Gerd Hoffmann <kraxel@xxxxxxxxxx>
CC: Stefan Berger <stefanb@xxxxxxxxxxxxx>
CC: Markus Armbruster <armbru@xxxxxxxxxx>
CC: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CC: qemu-block@xxxxxxxxxx
CC: xen-devel@xxxxxxxxxxxxxxxxxxxx

 include/qapi/error.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/include/qapi/error.h b/include/qapi/error.h
index ad5b6e896d..d34987148d 100644
--- a/include/qapi/error.h
+++ b/include/qapi/error.h
@@ -309,6 +309,32 @@ void warn_reportf_err(Error *err, const char *fmt, ...)
 void error_reportf_err(Error *err, const char *fmt, ...)
     GCC_FMT_ATTR(2, 3);
 
+/*
+ * Functions to clean Error **errp: call corresponding Error *err cleaning
+ * function, then set pointer to NULL.
+ */
+static inline void error_free_errp(Error **errp)
+{
+    assert(errp && *errp);
+    error_free(*errp);
+    *errp = NULL;
+}
+
+static inline void error_report_errp(Error **errp)
+{
+    assert(errp && *errp);
+    error_report_err(*errp);
+    *errp = NULL;
+}
+
+static inline void warn_report_errp(Error **errp)
+{
+    assert(errp && *errp);
+    warn_report_err(*errp);
+    *errp = NULL;
+}
+
+
 /*
  * Just like error_setg(), except you get to specify the error class.
  * Note: use of error classes other than ERROR_CLASS_GENERIC_ERROR is
-- 
2.21.0


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