Модуль coio¶

enum COIO_EVENT¶

enumerator COIO_READ¶: READ event

enumerator COIO_WRITE¶: WRITE event

int coio_wait(int fd, int event, double timeout)¶

Wait until READ or WRITE event on socket (fd). Yields.

Параметры:	fd (int) – non-blocking socket file description event (int) – requested events to wait. Combination of `COIO_READ \| COIO_WRITE` bit flags. timeout (double) – timeout in seconds.
Результат:	0 - timeout
Результат:	>0 - returned events. Combination of `TNT_IO_READ \| TNT_IO_WRITE` bit flags.

ssize_t coio_call(ssize_t (*func)(va_list), ...)¶

Create new eio task with specified function and arguments. Yield and wait until the task is complete or a timeout occurs.

This function doesn’t throw exceptions to avoid double error checking: in most cases it’s also necessary to check the return value of the called function and perform necessary actions. If func sets errno, the errno is preserved across the call.

Результат:	-1 and `errno` = ENOMEM if failed to create a task
Результат:	the function return (`errno` is preserved).

Example:

static ssize_t openfile_cb(va_list ap)
{
        const char* filename = va_arg(ap);
        int flags = va_arg(ap);
        return open(filename, flags);
}

if (coio_call(openfile_cb, 0.10, "/tmp/file", 0) == -1)
    // handle errors.
...

int coio_getaddrinfo(const char *host, const char *port, const struct addrinfo *hints, struct addrinfo **res, double timeout)¶: Fiber-friendly version of getaddrinfo(3).

Версия:

Модуль coio¶