anonymous_namespace{uuid.cpp} Namespace Reference

Classes
struct	uuid_state
	Data type for UUID generator persistent state. More...

Functions
void	format_uuid_v1 (uuid_upnp *uid, uint16_t clock_seq, uuid_time_t timestamp, uuid_node_t node)
	Make a UUID from the timestamp, clockseq, and node ID.
int	read_state (uint16_t *clockseq, uuid_time_t *timestamp, uuid_node_t *node)
	Read UUID generator state from non-volatile store.
void	write_state (uint16_t clockseq, uuid_time_t timestamp, uuid_node_t node)
	Save UUID generator state back to non-volatile storage.
void	get_current_time (uuid_time_t *timestamp)
	Get time as 60 bit 100ns ticks since whenever.
uint16_t	true_random ()
	generate a crypto-quality random number. This sample doesn't do that.
void	format_uuid_v3 (uuid_upnp *uid, unsigned char hash[16])
	Make a UUID from a (pseudo)random 128 bit number.

Variables
pthread_mutex_t	uuid_mutex
	Mutex to synchronize the uuid creation process.
uuid_state	st
	UUID generator persistent state.
int	stateInited {0}
	Flag if UUID generator persistent state is initiated.

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Class Documentation

anonymous_namespace{uuid.cpp}::uuid_state

struct anonymous_namespace{uuid.cpp}::uuid_state

Data type for UUID generator persistent state.

Definition at line 49 of file uuid.cpp.

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Class Members
uuid_time_t	ts	Saved timestamp.
uuid_node_t	node	Saved node ID.
uint16_t	cs	Saved clock sequence.

Function Documentation

format_uuid_v1()

void anonymous_namespace{uuid.cpp}::format_uuid_v1 ( uuid_upnp *  uid, uint16_t  clock_seq, uuid_time_t  timestamp, uuid_node_t  node  )

inline

Make a UUID from the timestamp, clockseq, and node ID.

Definition at line 66 of file uuid.cpp.

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read_state()

int anonymous_namespace{uuid.cpp}::read_state ( uint16_t *  clockseq, uuid_time_t *  timestamp, uuid_node_t *  node  )

inline

Read UUID generator state from non-volatile store.

Returns

• 0: State not initiated.
• 1: State is initiated.

Definition at line 87 of file uuid.cpp.

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write_state()

void anonymous_namespace{uuid.cpp}::write_state ( uint16_t  clockseq, uuid_time_t  timestamp, uuid_node_t  node  )

inline

Save UUID generator state back to non-volatile storage.

Definition at line 101 of file uuid.cpp.

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get_current_time()

void anonymous_namespace{uuid.cpp}::get_current_time ( uuid_time_t *  timestamp )

inline

Get time as 60 bit 100ns ticks since whenever.

Compensate for the fact that real clock resolution is less than 100ns.

Definition at line 124 of file uuid.cpp.

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true_random()

uint16_t anonymous_namespace{uuid.cpp}::true_random ( )

inline

generate a crypto-quality random number. This sample doesn't do that.

Definition at line 158 of file uuid.cpp.

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format_uuid_v3()

void anonymous_namespace{uuid.cpp}::format_uuid_v3 ( uuid_upnp *  uid, unsigned char  hash[16]  )

inline

Make a UUID from a (pseudo)random 128 bit number.

Definition at line 175 of file uuid.cpp.

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Variable Documentation

uuid_mutex

pthread_mutex_t anonymous_namespace{uuid.cpp}::uuid_mutex

Mutex to synchronize the uuid creation process.

Definition at line 46 of file uuid.cpp.

st

uuid_state anonymous_namespace{uuid.cpp}::st

UUID generator persistent state.

Definition at line 59 of file uuid.cpp.

stateInited

int anonymous_namespace{uuid.cpp}::stateInited {0}

Flag if UUID generator persistent state is initiated.

Definition at line 61 of file uuid.cpp.