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shared: add NM_G_ERROR_MSG()

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This commit is contained in:
Thomas Haller 2016-02-28 16:06:05 +01:00
parent c30627f106
commit 7871d850f5
1 changed files with 20 additions and 0 deletions
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20
shared/nm-macros-internal.h
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@ -116,6 +116,26 @@ GS_DEFINE_CLEANUP_FUNCTION(void*, _nm_auto_free_impl, free)
/********************************************************/
/**
* NM_G_ERROR_MSG:
* @error: (allow none): the #GError instance
*
* All functions must follow the convention that when they
* return a failure, they must also set the GError to a valid
* message. For external API however, we want to be extra
* careful before accessing the error instance. Use NM_G_ERROR_MSG()
* which is safe to use on NULL.
*
* Returns: the error message.
**/
static inline const char *
NM_G_ERROR_MSG (GError *error)
{
return error ? (error->message ? : "(null)") : "(no-error)"; \
}
/********************************************************/
/* macro to return strlen() of a compile time string. */
#define NM_STRLEN(str) ( sizeof ("" str) - 1 )