Getting credis to work in a C++ solution - c++

Question

I'm working on a C++ project where I must connect to redis database. I'm trying to get the credis code to work but when I compile it I get these sets of errors
1>c:\c++redis\credis.c(728): warning C4013: 'fcntl' undefined; assuming extern returning int
1>c:\c++redis\credis.c(728): error C2065: 'F_GETFL' : undeclared identifier
1>c:\c++redis\credis.c(729): error C2065: 'F_SETFL' : undeclared identifier
1>c:\c++redis\credis.c(729): error C2065: 'O_NONBLOCK' : undeclared identifier
1>c:\c++redis\credis.c(734): error C2065: 'EINPROGRESS' : undeclared identifier
1>c:\c++redis\credis.c(740): warning C4133: 'function' : incompatible types - from 'int *' to 'char *'
The error is in the credis.c file from line 728 to 746
/* connect with user specified timeout */
flags = fcntl(fd, F_GETFL);
if ((rc = fcntl(fd, F_SETFL, flags | O_NONBLOCK)) < 0) {
DEBUG("Setting socket non-blocking failed with: %d\n", rc);
}
if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) {
if (errno != EINPROGRESS)
goto error;
if (cr_selectwritable(fd, timeout) > 0) {
int err;
unsigned int len = sizeof(err);
if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &len) == -1 || err)
goto error;
}
else /* timeout or select error */
goto error;
}
/* else connect completed immediately */
Where can I find these missing typenames?
I'm using visual studio 2010 to compile this and the program must run on window.
I have tried to batch the code with this suggested answer, but that didn't help.

Answer 1

You have at least one header file missing:
#include <fcntl.h>
that should fix some of your issues. Generally, a good place to look for the header file names is in the help text for the function itself. In this case the header file has the same name as the function (fcntl) but most are not that easy.
EINPROGRESSis defined in:
#include <errno.h>
for future reference, the E prefix usually means it is an error macro, so errno.h is the first place to look.
'function' : incompatible types - from 'int *' to 'char *' probably means you have a prototype mis-match. Your prototype does not match the function itself. Update the prototype.
Edit:
Although that will fix some of your issues, it appears that this is UNIX code (see comments). F_GETFL and F_SETFL, for example, appears not to be supported on Windows. O_NONBLOCK is in unistd.h on UNIX.
You will need to rewrite the parts of the code requiring this functionality or, better yet, get the Windows version from your supplier.
From your updated post, these are done using sockets. Sockets are fairly portable, but there are some issues. For non-blocking sockets use ioctlsocket() on Windows.
Example:
int iRetn = ioctlsocket(s, FIONBIO, 1);
where s is the socket, the third parameter is 0 for blocking, non-zero for non-blocking.
You also need to #include <winsock.h> and call WSAStartup() before using any socket routines, and call WSACleanup() at end.
(To be honest that's all I can think of right now, I didn't realise I would be answering issues on sockets).

Answer 2

The library works well on linux,but not windows.
On Windows,I use https://code.google.com/p/libredic/