High Performance OPC UA Server SDK
1.2.0.193
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Data Fields | |
ua_datetime | modification_time |
enum ua_historyupdatetype | update_type |
struct ua_string | user_name |
Related Functions | |
void | ua_modificationinfo_init (struct ua_modificationinfo *t) |
Initialize an ua_modificationinfo struct with a valid value. More... | |
void | ua_modificationinfo_clear (struct ua_modificationinfo *t) |
Clear all resources alloctated in an ua_modificationinfo struct. More... | |
int | ua_modificationinfo_compare (const struct ua_modificationinfo *a, const struct ua_modificationinfo *b) |
Compare two ua_modificationinfo structs. More... | |
int | ua_modificationinfo_copy (struct ua_modificationinfo *dst, const struct ua_modificationinfo *src) |
Create a copy of a ua_modificationinfo struct. More... | |
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related |
Clear all resources alloctated in an ua_modificationinfo struct.
Frees allocated memory like arrays and resets numeric values. The ua_modificationinfo struct itself is not freed and must be freed by the caller if required. This function always succeeds for a valid ua_modificationinfo struct, that was validly decoded, initilized by ua_modificationinfo_init or created with ua_modificationinfo_copy.
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related |
Compare two ua_modificationinfo structs.
Compares the content of the ua_modificationinfo struct a
to the content of the ua_modificationinfo struct b
. If a
is smaller than b
, an integer less than zero is returned, if a
is bigger than b
, an integer greater than zero is returned. If both structs are equal zero is returned.
This function creates a total order on ua_modificationinfo structs, so it is well suited to not only determine equality, but also sort multiple instances of this struct.
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related |
Create a copy of a ua_modificationinfo struct.
Copy all fields from struct ua_modificationinfo src
to dst
. Creates a deep copy so all content is recusively copied and both src
and dst
can be used and must be freed separately.
dst
is not cleared before the copy operation, so it must not have any allocated data. It may or may not be initilized by the caller before copy.
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related |
Initialize an ua_modificationinfo struct with a valid value.
After initialization the fields of the struct are set to valid and consistent values and can safley be accessed. An initialized ua_modificationinfo struct can also be passed to ua_modificationinfo_compare, ua_modificationinfo_copy and ua_modificationinfo_clear. This function will always succeed as long as an ua_modificationinfo struct is passed to it.