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Libunit refactoring: port management.

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- Changed the port management callbacks to notifications, which e. g. avoids
the need to call the libunit function
- Added context and library instance reference counts for a safer resource
release
- Added the router main port initialization
This commit is contained in:
Max Romanov
2020-08-11 19:19:55 +03:00
parent 3a721e1d96
commit ec3389b63b
8 changed files with 380 additions and 337 deletions
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44
src/nxt_unit.h
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@@ -130,15 +130,15 @@ struct nxt_unit_callbacks_s {
int (*add_port)(nxt_unit_ctx_t *, nxt_unit_port_t *port);
/* Remove previously added port. Optional. */
void (*remove_port)(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id);
void (*remove_port)(nxt_unit_t *, nxt_unit_port_t *port);
/* Remove all data associated with process pid including ports. Optional. */
void (*remove_pid)(nxt_unit_ctx_t *, pid_t pid);
void (*remove_pid)(nxt_unit_t *, pid_t pid);
/* Gracefully quit the application. Optional. */
void (*quit)(nxt_unit_ctx_t *);
/* Shared memory release acknowledgement. */
/* Shared memory release acknowledgement. Optional. */
void (*shm_ack_handler)(nxt_unit_ctx_t *);
/* Send data and control to process pid using port id. Optional. */
@@ -149,7 +149,6 @@ struct nxt_unit_callbacks_s {
/* Receive data on port id. Optional. */
ssize_t (*port_recv)(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id,
void *buf, size_t buf_size, void *oob, size_t oob_size);
};
@@ -165,6 +164,7 @@ struct nxt_unit_init_s {
nxt_unit_port_t ready_port;
uint32_t ready_stream;
nxt_unit_port_t router_port;
nxt_unit_port_t read_port;
int log_fd;
};
@@ -222,45 +222,9 @@ void nxt_unit_done(nxt_unit_ctx_t *);
*/
nxt_unit_ctx_t *nxt_unit_ctx_alloc(nxt_unit_ctx_t *, void *);
/* Free unused context. It is not required to free main context. */
void nxt_unit_ctx_free(nxt_unit_ctx_t *);
/* Initialize port_id, calculate hash. */
void nxt_unit_port_id_init(nxt_unit_port_id_t *port_id, pid_t pid, uint16_t id);
/*
* Create extra incoming port, perform all required actions to propogate
* the port to Unit server. Fills structure referenced by port_id with
* current pid and new port id.
*/
int nxt_unit_create_send_port(nxt_unit_ctx_t *, nxt_unit_port_id_t *dst,
nxt_unit_port_id_t *port_id);
/* Default 'add_port' implementation. */
int nxt_unit_add_port(nxt_unit_ctx_t *, nxt_unit_port_t *port);
/* Find previously added port. */
nxt_unit_port_t *nxt_unit_find_port(nxt_unit_ctx_t *,
nxt_unit_port_id_t *port_id);
/* Find, fill output 'port' and remove port from storage. */
void nxt_unit_find_remove_port(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id,
nxt_unit_port_t *port);
/* Default 'remove_port' implementation. */
void nxt_unit_remove_port(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id);
/* Default 'remove_pid' implementation. */
void nxt_unit_remove_pid(nxt_unit_ctx_t *, pid_t pid);
/* Default 'quit' implementation. */
void nxt_unit_quit(nxt_unit_ctx_t *);
/* Default 'port_send' implementation. */
ssize_t nxt_unit_port_send(nxt_unit_ctx_t *, int fd,
const void *buf, size_t buf_size,
const void *oob, size_t oob_size);
/* Default 'port_recv' implementation. */
ssize_t nxt_unit_port_recv(nxt_unit_ctx_t *, int fd, void *buf, size_t buf_size,
void *oob, size_t oob_size);