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feat: further lay groundwork for worker threads

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This commit is contained in:
Jef Roosens 2024-02-01 14:00:03 +01:00
parent 3490c2dd42
commit ccb9b77cc8
Signed by: Jef Roosens
GPG key ID: B75D4F293C7052DB
3 changed files with 100 additions and 47 deletions
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63
include/lnm/loop.h
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@ -10,12 +10,17 @@
#define LNM_LOOP_BUF_SIZE 2048
typedef enum {
typedef enum lnm_loop_state {
lnm_loop_state_req = 0,
lnm_loop_state_res,
lnm_loop_state_end,
lnm_loop_state_req_blocking,
lnm_loop_state_res_blocking,
} lnm_loop_state;
/**
* State for a currently active connection
*/
typedef struct lnm_loop_conn {
int fd;
lnm_loop_state state;
@ -31,29 +36,8 @@ typedef struct lnm_loop_conn {
} w;
} lnm_loop_conn;
typedef struct lnm_loop {
int listen_fd;
int epoll_fd;
atomic_int open;
void *gctx;
lnm_err (*ctx_init)(void **out, void *gctx);
void (*ctx_free)(void *ctx);
void (*data_read)(lnm_loop_conn *conn);
void (*data_write)(lnm_loop_conn *conn);
} lnm_loop;
lnm_err lnm_loop_init(lnm_loop **out, void *gctx,
lnm_err (*ctx_init)(void **out, void *gctx),
void (*ctx_free)(void *ctx),
void (*data_read)(lnm_loop_conn *conn),
void (*data_write)(lnm_loop_conn *conn));
lnm_err lnm_loop_setup(lnm_loop *l, uint16_t port);
lnm_err lnm_loop_run(lnm_loop *l, int thread_count);
/**
* Concurrent fixed-size queue used by the worked threads to distribute tasks
* Concurrent fixed-size queue used to distribute work among worker threads
*/
typedef struct lnm_loop_queue {
struct {
@ -83,4 +67,37 @@ void lnm_loop_queue_push(lnm_loop_queue *q, lnm_loop_conn *conn);
*/
lnm_loop_conn *lnm_loop_queue_pop(lnm_loop_queue *q);
typedef struct lnm_loop {
int listen_fd;
int epoll_fd;
atomic_int open;
void *gctx;
lnm_err (*ctx_init)(void **out, void *gctx);
void (*ctx_free)(void *ctx);
void (*data_read)(lnm_loop_conn *conn);
void (*data_write)(lnm_loop_conn *conn);
lnm_loop_queue *wq;
} lnm_loop;
lnm_err lnm_loop_init(lnm_loop **out, void *gctx,
lnm_err (*ctx_init)(void **out, void *gctx),
void (*ctx_free)(void *ctx),
void (*data_read)(lnm_loop_conn *conn),
void (*data_write)(lnm_loop_conn *conn));
lnm_err lnm_loop_setup(lnm_loop *l, uint16_t port);
lnm_err lnm_loop_run(lnm_loop *l, int thread_count);
/**
* Reschedule the given connection, either on the event loop for network IO or
* on a worker thread for blocking work. Connections are terminated as needed.
*/
void lnm_loop_conn_schedule(lnm_loop *l, lnm_loop_conn *conn);
/**
* Main loop executed on the worker threads.
*/
void lnm_loop_worker_run(void *arg);
#endif