Reindent server/core/dcb.c
This commit is contained in:
Johan Wikman
parent
17760bb3e6
commit
2afe60dd0e
2768
server/core/dcb.c
2768
server/core/dcb.c
File diff suppressed because it is too large
Load Diff
@ -34,7 +34,7 @@ struct server;
|
||||
struct service;
|
||||
|
||||
/**
|
||||
* @file dcb.h The Descriptor Control Block
|
||||
* @file dcb.h The Descriptor Control Block
|
||||
*
|
||||
* The function pointer table used by descriptors to call relevant functions
|
||||
* within the protocol specific code.
|
||||
@ -42,88 +42,90 @@ struct service;
|
||||
* @verbatim
|
||||
* Revision History
|
||||
*
|
||||
* Date Who Description
|
||||
* 01/06/2013 Mark Riddoch Initial implementation
|
||||
* 11/06/2013 Mark Riddoch Updated GWPROTOCOL structure with new
|
||||
* entry points
|
||||
* 18/06/2013 Mark Riddoch Addition of the listener entry point
|
||||
* 02/07/2013 Massimiliano Pinto Addition of delayqlock, delayq and authlock
|
||||
* for handling backend asynchronous protocol connection
|
||||
* and a generic lock for backend authentication
|
||||
* 12/07/2013 Massimiliano Pinto Added auth entry point
|
||||
* 15/07/2013 Massimiliano Pinto Added session entry point
|
||||
* 16/07/2013 Massimiliano Pinto Added command type for dcb
|
||||
* 07/02/2014 Massimiliano Pinto Added ipv4 data struct into for dcb
|
||||
* 07/05/2014 Mark Riddoch Addition of callback mechanism
|
||||
* 08/05/2014 Mark Riddoch Addition of writeq high and low watermarks
|
||||
* 27/08/2014 Mark Riddoch Addition of write event queuing
|
||||
* 23/09/2014 Mark Riddoch New poll processing queue
|
||||
* 19/06/2015 Martin Brampton Provision of persistent connections
|
||||
* Date Who Description
|
||||
* 01/06/2013 Mark Riddoch Initial implementation
|
||||
* 11/06/2013 Mark Riddoch Updated GWPROTOCOL structure with new
|
||||
* entry points
|
||||
* 18/06/2013 Mark Riddoch Addition of the listener entry point
|
||||
* 02/07/2013 Massimiliano Pinto Addition of delayqlock, delayq and authlock
|
||||
* for handling backend asynchronous protocol connection
|
||||
* and a generic lock for backend authentication
|
||||
* 12/07/2013 Massimiliano Pinto Added auth entry point
|
||||
* 15/07/2013 Massimiliano Pinto Added session entry point
|
||||
* 16/07/2013 Massimiliano Pinto Added command type for dcb
|
||||
* 07/02/2014 Massimiliano Pinto Added ipv4 data struct into for dcb
|
||||
* 07/05/2014 Mark Riddoch Addition of callback mechanism
|
||||
* 08/05/2014 Mark Riddoch Addition of writeq high and low watermarks
|
||||
* 27/08/2014 Mark Riddoch Addition of write event queuing
|
||||
* 23/09/2014 Mark Riddoch New poll processing queue
|
||||
* 19/06/2015 Martin Brampton Provision of persistent connections
|
||||
*
|
||||
* @endverbatim
|
||||
*/
|
||||
|
||||
struct dcb;
|
||||
|
||||
/**
|
||||
* @verbatim
|
||||
* The operations that can be performed on the descriptor
|
||||
*
|
||||
* read EPOLLIN handler for the socket
|
||||
* write MaxScale data write entry point
|
||||
* write_ready EPOLLOUT handler for the socket, indicates
|
||||
* that the socket is ready to send more data
|
||||
* error EPOLLERR handler for the socket
|
||||
* hangup EPOLLHUP handler for the socket
|
||||
* accept Accept handler for listener socket only
|
||||
* connect Create a connection to the specified server
|
||||
* for the session pased in
|
||||
* close MaxScale close entry point for the socket
|
||||
* listen Create a listener for the protocol
|
||||
* auth Authentication entry point
|
||||
* session Session handling entry point
|
||||
* @endverbatim
|
||||
*
|
||||
* This forms the "module object" for protocol modules within the gateway.
|
||||
*
|
||||
* @see load_module
|
||||
*/
|
||||
typedef struct gw_protocol {
|
||||
int (*read)(struct dcb *);
|
||||
int (*write)(struct dcb *, GWBUF *);
|
||||
int (*write_ready)(struct dcb *);
|
||||
int (*error)(struct dcb *);
|
||||
int (*hangup)(struct dcb *);
|
||||
int (*accept)(struct dcb *);
|
||||
int (*connect)(struct dcb *, struct server *, struct session *);
|
||||
int (*close)(struct dcb *);
|
||||
int (*listen)(struct dcb *, char *);
|
||||
int (*auth)(struct dcb *, struct server *, struct session *, GWBUF *);
|
||||
int (*session)(struct dcb *, void *);
|
||||
/**
|
||||
* @verbatim
|
||||
* The operations that can be performed on the descriptor
|
||||
*
|
||||
* read EPOLLIN handler for the socket
|
||||
* write MaxScale data write entry point
|
||||
* write_ready EPOLLOUT handler for the socket, indicates
|
||||
* that the socket is ready to send more data
|
||||
* error EPOLLERR handler for the socket
|
||||
* hangup EPOLLHUP handler for the socket
|
||||
* accept Accept handler for listener socket only
|
||||
* connect Create a connection to the specified server
|
||||
* for the session pased in
|
||||
* close MaxScale close entry point for the socket
|
||||
* listen Create a listener for the protocol
|
||||
* auth Authentication entry point
|
||||
* session Session handling entry point
|
||||
* @endverbatim
|
||||
*
|
||||
* This forms the "module object" for protocol modules within the gateway.
|
||||
*
|
||||
* @see load_module
|
||||
*/
|
||||
typedef struct gw_protocol
|
||||
{
|
||||
int (*read)(struct dcb *);
|
||||
int (*write)(struct dcb *, GWBUF *);
|
||||
int (*write_ready)(struct dcb *);
|
||||
int (*error)(struct dcb *);
|
||||
int (*hangup)(struct dcb *);
|
||||
int (*accept)(struct dcb *);
|
||||
int (*connect)(struct dcb *, struct server *, struct session *);
|
||||
int (*close)(struct dcb *);
|
||||
int (*listen)(struct dcb *, char *);
|
||||
int (*auth)(struct dcb *, struct server *, struct session *, GWBUF *);
|
||||
int (*session)(struct dcb *, void *);
|
||||
} GWPROTOCOL;
|
||||
|
||||
/**
|
||||
* The event queue structure used in the polling loop to maintain a queue
|
||||
* of events that need to be processed for the DCB.
|
||||
*
|
||||
* next The next DCB in the event queue
|
||||
* prev The previous DCB in the event queue
|
||||
* pending_events The events that are pending processing
|
||||
* processing_events The evets currently being processed
|
||||
* processing Flag to indicate the processing status of the DCB
|
||||
* eventqlock Spinlock to protect this structure
|
||||
* inserted Insertion time for logging purposes
|
||||
* started Time that the processign started
|
||||
* next The next DCB in the event queue
|
||||
* prev The previous DCB in the event queue
|
||||
* pending_events The events that are pending processing
|
||||
* processing_events The evets currently being processed
|
||||
* processing Flag to indicate the processing status of the DCB
|
||||
* eventqlock Spinlock to protect this structure
|
||||
* inserted Insertion time for logging purposes
|
||||
* started Time that the processign started
|
||||
*/
|
||||
typedef struct {
|
||||
struct dcb *next;
|
||||
struct dcb *prev;
|
||||
uint32_t pending_events;
|
||||
uint32_t processing_events;
|
||||
int processing;
|
||||
SPINLOCK eventqlock;
|
||||
unsigned long inserted;
|
||||
unsigned long started;
|
||||
typedef struct
|
||||
{
|
||||
struct dcb *next;
|
||||
struct dcb *prev;
|
||||
uint32_t pending_events;
|
||||
uint32_t processing_events;
|
||||
int processing;
|
||||
SPINLOCK eventqlock;
|
||||
unsigned long inserted;
|
||||
unsigned long started;
|
||||
} DCBEVENTQ;
|
||||
|
||||
/**
|
||||
@ -131,20 +133,21 @@ typedef struct {
|
||||
* the GWPROTOCOL structure is changed. See the rules defined in modinfo.h
|
||||
* that define how these numbers should change.
|
||||
*/
|
||||
#define GWPROTOCOL_VERSION {1, 0, 0}
|
||||
#define GWPROTOCOL_VERSION {1, 0, 0}
|
||||
|
||||
#define DCBFD_CLOSED -1
|
||||
|
||||
/**
|
||||
* The statistics gathered on a descriptor control block
|
||||
*/
|
||||
typedef struct dcbstats {
|
||||
int n_reads; /*< Number of reads on this descriptor */
|
||||
int n_writes; /*< Number of writes on this descriptor */
|
||||
int n_accepts; /*< Number of accepts on this descriptor */
|
||||
int n_buffered; /*< Number of buffered writes */
|
||||
int n_high_water; /*< Number of crosses of high water mark */
|
||||
int n_low_water; /*< Number of crosses of low water mark */
|
||||
typedef struct dcbstats
|
||||
{
|
||||
int n_reads; /*< Number of reads on this descriptor */
|
||||
int n_writes; /*< Number of writes on this descriptor */
|
||||
int n_accepts; /*< Number of accepts on this descriptor */
|
||||
int n_buffered; /*< Number of buffered writes */
|
||||
int n_high_water; /*< Number of crosses of high water mark */
|
||||
int n_low_water; /*< Number of crosses of low water mark */
|
||||
} DCBSTATS;
|
||||
|
||||
/**
|
||||
@ -165,50 +168,54 @@ typedef struct dcbstats {
|
||||
* will clear the bit value that corresponds to the calling thread. Once the bitmask
|
||||
* is completely cleared the DCB can finally be freed and removed from the zombie list.
|
||||
*/
|
||||
typedef struct {
|
||||
GWBITMASK bitmask; /*< The bitmask of threads */
|
||||
struct dcb *next; /*< Next pointer for the zombie list */
|
||||
typedef struct
|
||||
{
|
||||
GWBITMASK bitmask; /*< The bitmask of threads */
|
||||
struct dcb *next; /*< Next pointer for the zombie list */
|
||||
} DCBMM;
|
||||
|
||||
/* DCB states */
|
||||
typedef enum {
|
||||
DCB_STATE_UNDEFINED, /*< State variable with no state */
|
||||
DCB_STATE_ALLOC, /*< Memory allocated but not populated */
|
||||
DCB_STATE_POLLING, /*< Waiting in the poll loop */
|
||||
DCB_STATE_LISTENING, /*< The DCB is for a listening socket */
|
||||
DCB_STATE_DISCONNECTED, /*< The socket is now closed */
|
||||
DCB_STATE_NOPOLLING, /*< Removed from poll mask */
|
||||
DCB_STATE_ZOMBIE, /*< DCB is no longer active, waiting to free it */
|
||||
typedef enum
|
||||
{
|
||||
DCB_STATE_UNDEFINED, /*< State variable with no state */
|
||||
DCB_STATE_ALLOC, /*< Memory allocated but not populated */
|
||||
DCB_STATE_POLLING, /*< Waiting in the poll loop */
|
||||
DCB_STATE_LISTENING, /*< The DCB is for a listening socket */
|
||||
DCB_STATE_DISCONNECTED, /*< The socket is now closed */
|
||||
DCB_STATE_NOPOLLING, /*< Removed from poll mask */
|
||||
DCB_STATE_ZOMBIE, /*< DCB is no longer active, waiting to free it */
|
||||
} dcb_state_t;
|
||||
|
||||
typedef enum {
|
||||
DCB_ROLE_SERVICE_LISTENER, /*< Receives initial connect requests from clients */
|
||||
DCB_ROLE_REQUEST_HANDLER, /*< Serves dedicated client */
|
||||
DCB_ROLE_INTERNAL /*< Internal DCB not connected to the outside */
|
||||
typedef enum
|
||||
{
|
||||
DCB_ROLE_SERVICE_LISTENER, /*< Receives initial connect requests from clients */
|
||||
DCB_ROLE_REQUEST_HANDLER, /*< Serves dedicated client */
|
||||
DCB_ROLE_INTERNAL /*< Internal DCB not connected to the outside */
|
||||
} dcb_role_t;
|
||||
|
||||
/**
|
||||
* Callback reasons for the DCB callback mechanism.
|
||||
*/
|
||||
typedef enum {
|
||||
DCB_REASON_CLOSE, /*< The DCB is closing */
|
||||
DCB_REASON_DRAINED, /*< The write delay queue has drained */
|
||||
DCB_REASON_HIGH_WATER, /*< Cross high water mark */
|
||||
DCB_REASON_LOW_WATER, /*< Cross low water mark */
|
||||
DCB_REASON_ERROR, /*< An error was flagged on the connection */
|
||||
DCB_REASON_HUP, /*< A hangup was detected */
|
||||
DCB_REASON_NOT_RESPONDING /*< Server connection was lost */
|
||||
typedef enum
|
||||
{
|
||||
DCB_REASON_CLOSE, /*< The DCB is closing */
|
||||
DCB_REASON_DRAINED, /*< The write delay queue has drained */
|
||||
DCB_REASON_HIGH_WATER, /*< Cross high water mark */
|
||||
DCB_REASON_LOW_WATER, /*< Cross low water mark */
|
||||
DCB_REASON_ERROR, /*< An error was flagged on the connection */
|
||||
DCB_REASON_HUP, /*< A hangup was detected */
|
||||
DCB_REASON_NOT_RESPONDING /*< Server connection was lost */
|
||||
} DCB_REASON;
|
||||
|
||||
/**
|
||||
* Callback structure - used to track callbacks registered on a DCB
|
||||
*/
|
||||
typedef struct dcb_callback {
|
||||
DCB_REASON reason; /*< The reason for the callback */
|
||||
int (*cb)(struct dcb *dcb, DCB_REASON reason, void *userdata);
|
||||
void *userdata; /*< User data to be sent in the callback */
|
||||
struct dcb_callback
|
||||
*next; /*< Next callback for this DCB */
|
||||
typedef struct dcb_callback
|
||||
{
|
||||
DCB_REASON reason; /*< The reason for the callback */
|
||||
int (*cb)(struct dcb *dcb, DCB_REASON reason, void *userdata);
|
||||
void *userdata; /*< User data to be sent in the callback */
|
||||
struct dcb_callback *next; /*< Next callback for this DCB */
|
||||
} DCB_CALLBACK;
|
||||
|
||||
|
||||
@ -223,53 +230,54 @@ typedef struct dcb_callback {
|
||||
* It is important to hold the state information here such that any thread within the
|
||||
* gateway may be selected to execute the required actions when a network event occurs.
|
||||
*/
|
||||
typedef struct dcb {
|
||||
typedef struct dcb
|
||||
{
|
||||
skygw_chk_t dcb_chk_top;
|
||||
bool dcb_errhandle_called; /*< this can be called only once */
|
||||
bool dcb_is_zombie; /**< Whether the DCB is in the zombie list */
|
||||
dcb_role_t dcb_role;
|
||||
bool dcb_errhandle_called; /*< this can be called only once */
|
||||
bool dcb_is_zombie; /**< Whether the DCB is in the zombie list */
|
||||
dcb_role_t dcb_role;
|
||||
SPINLOCK dcb_initlock;
|
||||
DCBEVENTQ evq; /**< The event queue for this DCB */
|
||||
int fd; /**< The descriptor */
|
||||
dcb_state_t state; /**< Current descriptor state */
|
||||
int flags; /**< DCB flags */
|
||||
char *remote; /**< Address of remote end */
|
||||
char *user; /**< User name for connection */
|
||||
struct sockaddr_in ipv4; /**< remote end IPv4 address */
|
||||
DCBEVENTQ evq; /**< The event queue for this DCB */
|
||||
int fd; /**< The descriptor */
|
||||
dcb_state_t state; /**< Current descriptor state */
|
||||
int flags; /**< DCB flags */
|
||||
char *remote; /**< Address of remote end */
|
||||
char *user; /**< User name for connection */
|
||||
struct sockaddr_in ipv4; /**< remote end IPv4 address */
|
||||
char *protoname; /**< Name of the protocol */
|
||||
void *protocol; /**< The protocol specific state */
|
||||
struct session *session; /**< The owning session */
|
||||
GWPROTOCOL func; /**< The functions for this descriptor */
|
||||
void *protocol; /**< The protocol specific state */
|
||||
struct session *session; /**< The owning session */
|
||||
GWPROTOCOL func; /**< The functions for this descriptor */
|
||||
|
||||
int writeqlen; /**< Current number of byes in the write queue */
|
||||
SPINLOCK writeqlock; /**< Write Queue spinlock */
|
||||
GWBUF *writeq; /**< Write Data Queue */
|
||||
SPINLOCK delayqlock; /**< Delay Backend Write Queue spinlock */
|
||||
GWBUF *delayq; /**< Delay Backend Write Data Queue */
|
||||
GWBUF *dcb_readqueue; /**< read queue for storing incomplete reads */
|
||||
SPINLOCK authlock; /**< Generic Authorization spinlock */
|
||||
int writeqlen; /**< Current number of byes in the write queue */
|
||||
SPINLOCK writeqlock; /**< Write Queue spinlock */
|
||||
GWBUF *writeq; /**< Write Data Queue */
|
||||
SPINLOCK delayqlock; /**< Delay Backend Write Queue spinlock */
|
||||
GWBUF *delayq; /**< Delay Backend Write Data Queue */
|
||||
GWBUF *dcb_readqueue; /**< read queue for storing incomplete reads */
|
||||
SPINLOCK authlock; /**< Generic Authorization spinlock */
|
||||
|
||||
DCBSTATS stats; /**< DCB related statistics */
|
||||
DCBSTATS stats; /**< DCB related statistics */
|
||||
unsigned int dcb_server_status; /*< the server role indicator from SERVER */
|
||||
struct dcb *next; /**< Next DCB in the chain of allocated DCB's */
|
||||
struct dcb *next; /**< Next DCB in the chain of allocated DCB's */
|
||||
struct dcb *nextpersistent; /**< Next DCB in the persistent pool for SERVER */
|
||||
time_t persistentstart; /**< Time when DCB placed in persistent pool */
|
||||
struct service *service; /**< The related service */
|
||||
void *data; /**< Specific client data */
|
||||
DCBMM memdata; /**< The data related to DCB memory management */
|
||||
SPINLOCK cb_lock; /**< The lock for the callbacks linked list */
|
||||
DCB_CALLBACK *callbacks; /**< The list of callbacks for the DCB */
|
||||
SPINLOCK pollinlock;
|
||||
int pollinbusy;
|
||||
int readcheck;
|
||||
struct service *service; /**< The related service */
|
||||
void *data; /**< Specific client data */
|
||||
DCBMM memdata; /**< The data related to DCB memory management */
|
||||
SPINLOCK cb_lock; /**< The lock for the callbacks linked list */
|
||||
DCB_CALLBACK *callbacks; /**< The list of callbacks for the DCB */
|
||||
SPINLOCK pollinlock;
|
||||
int pollinbusy;
|
||||
int readcheck;
|
||||
|
||||
SPINLOCK polloutlock;
|
||||
int polloutbusy;
|
||||
int writecheck;
|
||||
SPINLOCK polloutlock;
|
||||
int polloutbusy;
|
||||
int writecheck;
|
||||
unsigned long last_read; /*< Last time the DCB received data */
|
||||
unsigned int high_water; /**< High water mark */
|
||||
unsigned int low_water; /**< Low water mark */
|
||||
struct server *server; /**< The associated backend server */
|
||||
unsigned int high_water; /**< High water mark */
|
||||
unsigned int low_water; /**< Low water mark */
|
||||
struct server *server; /**< The associated backend server */
|
||||
SSL* ssl; /*< SSL struct for connection */
|
||||
int dcb_port; /**< port of target server */
|
||||
skygw_chk_t dcb_chk_tail;
|
||||
@ -278,13 +286,14 @@ typedef struct dcb {
|
||||
/**
|
||||
* The DCB usage filer used for returning DCB's in use for a certain reason
|
||||
*/
|
||||
typedef enum {
|
||||
DCB_USAGE_CLIENT,
|
||||
DCB_USAGE_LISTENER,
|
||||
DCB_USAGE_BACKEND,
|
||||
DCB_USAGE_INTERNAL,
|
||||
DCB_USAGE_ZOMBIE,
|
||||
DCB_USAGE_ALL
|
||||
typedef enum
|
||||
{
|
||||
DCB_USAGE_CLIENT,
|
||||
DCB_USAGE_LISTENER,
|
||||
DCB_USAGE_BACKEND,
|
||||
DCB_USAGE_INTERNAL,
|
||||
DCB_USAGE_ZOMBIE,
|
||||
DCB_USAGE_ALL
|
||||
} DCB_USAGE;
|
||||
|
||||
#if defined(FAKE_CODE)
|
||||
@ -297,52 +306,50 @@ int fail_accept_errno;
|
||||
#endif /* FAKE_CODE */
|
||||
|
||||
/* A few useful macros */
|
||||
#define DCB_SESSION(x) (x)->session
|
||||
#define DCB_PROTOCOL(x, type) (type *)((x)->protocol)
|
||||
#define DCB_ISZOMBIE(x) ((x)->state == DCB_STATE_ZOMBIE)
|
||||
#define DCB_WRITEQLEN(x) (x)->writeqlen
|
||||
#define DCB_SET_LOW_WATER(x, lo) (x)->low_water = (lo);
|
||||
#define DCB_SET_HIGH_WATER(x, hi) (x)->low_water = (hi);
|
||||
#define DCB_BELOW_LOW_WATER(x) ((x)->low_water && (x)->writeqlen < (x)->low_water)
|
||||
#define DCB_ABOVE_HIGH_WATER(x) ((x)->high_water && (x)->writeqlen > (x)->high_water)
|
||||
#define DCB_SESSION(x) (x)->session
|
||||
#define DCB_PROTOCOL(x, type) (type *)((x)->protocol)
|
||||
#define DCB_ISZOMBIE(x) ((x)->state == DCB_STATE_ZOMBIE)
|
||||
#define DCB_WRITEQLEN(x) (x)->writeqlen
|
||||
#define DCB_SET_LOW_WATER(x, lo) (x)->low_water = (lo);
|
||||
#define DCB_SET_HIGH_WATER(x, hi) (x)->low_water = (hi);
|
||||
#define DCB_BELOW_LOW_WATER(x) ((x)->low_water && (x)->writeqlen < (x)->low_water)
|
||||
#define DCB_ABOVE_HIGH_WATER(x) ((x)->high_water && (x)->writeqlen > (x)->high_water)
|
||||
|
||||
#define DCB_POLL_BUSY(x) ((x)->evq.next != NULL)
|
||||
#define DCB_POLL_BUSY(x) ((x)->evq.next != NULL)
|
||||
|
||||
DCB *dcb_get_zombies(void);
|
||||
int gw_write(DCB *, const void *, size_t);
|
||||
int dcb_write(DCB *, GWBUF *);
|
||||
DCB *dcb_alloc(dcb_role_t);
|
||||
void dcb_free(DCB *);
|
||||
DCB *dcb_connect(struct server *, struct session *, const char *);
|
||||
DCB *dcb_clone(DCB *);
|
||||
int dcb_read(DCB *, GWBUF **, int);
|
||||
int dcb_drain_writeq(DCB *);
|
||||
void dcb_close(DCB *);
|
||||
DCB *dcb_process_zombies(int); /* Process Zombies except the one behind the pointer */
|
||||
void printAllDCBs(); /* Debug to print all DCB in the system */
|
||||
void printDCB(DCB *); /* Debug print routine */
|
||||
void dprintAllDCBs(DCB *); /* Debug to print all DCB in the system */
|
||||
void dprintOneDCB(DCB *, DCB *); /* Debug to print one DCB */
|
||||
void dprintDCB(DCB *, DCB *); /* Debug to print a DCB in the system */
|
||||
void dListDCBs(DCB *); /* List all DCBs in the system */
|
||||
void dListClients(DCB *); /* List al the client DCBs */
|
||||
const char *gw_dcb_state2string(int); /* DCB state to string */
|
||||
void dcb_printf(DCB *, const char *, ...); /* DCB version of printf */
|
||||
int dcb_isclient(DCB *); /* the DCB is the client of the session */
|
||||
void dcb_hashtable_stats(DCB *, void *); /**< Print statisitics */
|
||||
int dcb_add_callback(DCB *, DCB_REASON, int (*)(struct dcb *, DCB_REASON, void *),
|
||||
void *);
|
||||
int dcb_remove_callback(DCB *, DCB_REASON, int (*)(struct dcb *, DCB_REASON, void *),
|
||||
void *);
|
||||
int dcb_isvalid(DCB *); /* Check the DCB is in the linked list */
|
||||
int dcb_count_by_usage(DCB_USAGE); /* Return counts of DCBs */
|
||||
int dcb_persistent_clean_count(DCB *, bool); /* Clean persistent and return count */
|
||||
DCB *dcb_get_zombies(void);
|
||||
int gw_write(DCB *, const void *, size_t);
|
||||
int dcb_write(DCB *, GWBUF *);
|
||||
DCB *dcb_alloc(dcb_role_t);
|
||||
void dcb_free(DCB *);
|
||||
DCB *dcb_connect(struct server *, struct session *, const char *);
|
||||
DCB *dcb_clone(DCB *);
|
||||
int dcb_read(DCB *, GWBUF **, int);
|
||||
int dcb_drain_writeq(DCB *);
|
||||
void dcb_close(DCB *);
|
||||
DCB *dcb_process_zombies(int); /* Process Zombies except the one behind the pointer */
|
||||
void printAllDCBs(); /* Debug to print all DCB in the system */
|
||||
void printDCB(DCB *); /* Debug print routine */
|
||||
void dprintAllDCBs(DCB *); /* Debug to print all DCB in the system */
|
||||
void dprintOneDCB(DCB *, DCB *); /* Debug to print one DCB */
|
||||
void dprintDCB(DCB *, DCB *); /* Debug to print a DCB in the system */
|
||||
void dListDCBs(DCB *); /* List all DCBs in the system */
|
||||
void dListClients(DCB *); /* List al the client DCBs */
|
||||
const char *gw_dcb_state2string(int); /* DCB state to string */
|
||||
void dcb_printf(DCB *, const char *, ...); /* DCB version of printf */
|
||||
int dcb_isclient(DCB *); /* the DCB is the client of the session */
|
||||
void dcb_hashtable_stats(DCB *, void *); /**< Print statisitics */
|
||||
int dcb_add_callback(DCB *, DCB_REASON, int (*)(struct dcb *, DCB_REASON, void *), void *);
|
||||
int dcb_remove_callback(DCB *, DCB_REASON, int (*)(struct dcb *, DCB_REASON, void *), void *);
|
||||
int dcb_isvalid(DCB *); /* Check the DCB is in the linked list */
|
||||
int dcb_count_by_usage(DCB_USAGE); /* Return counts of DCBs */
|
||||
int dcb_persistent_clean_count(DCB *, bool); /* Clean persistent and return count */
|
||||
|
||||
void dcb_call_foreach (struct server* server, DCB_REASON reason);
|
||||
void dcb_hangup_foreach (struct server* server);
|
||||
void dcb_call_foreach (struct server* server, DCB_REASON reason);
|
||||
void dcb_hangup_foreach (struct server* server);
|
||||
size_t dcb_get_session_id(DCB* dcb);
|
||||
bool dcb_get_ses_log_info(DCB* dcb, size_t* sesid, int* enabled_logs);
|
||||
char *dcb_role_name(DCB *); /* Return the name of a role */
|
||||
bool dcb_get_ses_log_info(DCB* dcb, size_t* sesid, int* enabled_logs);
|
||||
char *dcb_role_name(DCB *); /* Return the name of a role */
|
||||
int dcb_create_SSL(DCB* dcb);
|
||||
int dcb_accept_SSL(DCB* dcb);
|
||||
int dcb_connect_SSL(DCB* dcb);
|
||||
@ -355,9 +362,9 @@ int dcb_drain_writeq_SSL(DCB *dcb);
|
||||
/**
|
||||
* DCB flags values
|
||||
*/
|
||||
#define DCBF_CLONE 0x0001 /*< DCB is a clone */
|
||||
#define DCBF_HUNG 0x0002 /*< Hangup has been dispatched */
|
||||
#define DCBF_REPLIED 0x0004 /*< DCB was written to */
|
||||
#define DCBF_CLONE 0x0001 /*< DCB is a clone */
|
||||
#define DCBF_HUNG 0x0002 /*< Hangup has been dispatched */
|
||||
#define DCBF_REPLIED 0x0004 /*< DCB was written to */
|
||||
|
||||
#define DCB_IS_CLONE(d) ((d)->flags & DCBF_CLONE)
|
||||
#define DCB_REPLIED(d) ((d)->flags & DCBF_REPLIED)
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user