Module coio
-
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.
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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. This function may use the worker_pool_threads configuration parameter.
To avoid double error checking, this function does not throw exceptions. In most cases it is 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 taskРезультат: the function’s 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, "/tmp/file", 0) == -1) // handle errors. ...
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int
coio_getaddrinfo
(const char *host, const char *port, const struct addrinfo *hints, struct addrinfo **res, double timeout)¶ Fiber-friendly version of getaddrinfo(3).
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int
coio_close
(int fd)¶ Close the
fd
and wake any fiber blocked in coio_wait() call on thisfd
.Параметры: - fd (int) – non-blocking socket file description
Результат: the result of
close(fd)
, see close(2)