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Adding a reference counter to the libunit port structure.

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The goal is to minimize the number of (pid, id) to port hash lookups which
require a library mutex lock.  The response port is found once per request,
while the read port is initialized at startup.
This commit is contained in:
Max Romanov
2020-08-11 19:20:06 +03:00
parent ec3389b63b
commit bf647588ff
3 changed files with 347 additions and 358 deletions
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680
src/nxt_unit.c
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13
src/nxt_unit.h
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@@ -91,8 +91,7 @@ struct nxt_unit_request_info_s {
nxt_unit_t *unit;
nxt_unit_ctx_t *ctx;
nxt_unit_port_id_t request_port;
nxt_unit_port_id_t response_port;
nxt_unit_port_t *response_port;
nxt_unit_request_t *request;
nxt_unit_buf_t *request_buf;
@@ -142,12 +141,12 @@ struct nxt_unit_callbacks_s {
void (*shm_ack_handler)(nxt_unit_ctx_t *);
/* Send data and control to process pid using port id. Optional. */
ssize_t (*port_send)(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id,
ssize_t (*port_send)(nxt_unit_ctx_t *, nxt_unit_port_t *port,
const void *buf, size_t buf_size,
const void *oob, size_t oob_size);
/* Receive data on port id. Optional. */
ssize_t (*port_recv)(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id,
ssize_t (*port_recv)(nxt_unit_ctx_t *, nxt_unit_port_t *port,
void *buf, size_t buf_size, void *oob, size_t oob_size);
};
@@ -195,7 +194,7 @@ nxt_unit_ctx_t *nxt_unit_init(nxt_unit_init_t *);
* from port socket should be initially processed by unit. This function
* may invoke other application-defined callback for message processing.
*/
int nxt_unit_process_msg(nxt_unit_ctx_t *, nxt_unit_port_id_t *port_id,
int nxt_unit_process_msg(nxt_unit_ctx_t *,
void *buf, size_t buf_size, void *oob, size_t oob_size);
/*
@@ -225,10 +224,6 @@ nxt_unit_ctx_t *nxt_unit_ctx_alloc(nxt_unit_ctx_t *, void *);
/* Initialize port_id, calculate hash. */
void nxt_unit_port_id_init(nxt_unit_port_id_t *port_id, pid_t pid, uint16_t id);
/* 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);
/* Calculates hash for given field name. */
uint16_t nxt_unit_field_hash(const char* name, size_t name_length);