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Use FIONREAD ioctl to check for available data in recv_pump()

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This is a bit faster than using select()
This commit is contained in:
Daniel Collins 2023-12-02 18:04:39 +00:00
parent 2a3bbd06c4
commit d50a12a186
1 changed files with 3 additions and 10 deletions
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13
src/winsock.c
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@ -771,25 +771,18 @@ static BOOL reclaim_socket(ipx_socket *sockptr, int lookup_fd)
static int recv_pump(ipx_socket *sockptr, BOOL block) static int recv_pump(ipx_socket *sockptr, BOOL block)
{ {
int fd = sockptr->fd; int fd = sockptr->fd;
u_long available = -1;
if(!block) if(!block)
{ {
FPROF_RECORD_SCOPE(&(ipxwrapper_fstats[IPXWRAPPER_FSTATS_recv_pump_select])); FPROF_RECORD_SCOPE(&(ipxwrapper_fstats[IPXWRAPPER_FSTATS_recv_pump_select]));
fd_set read_fds; if(r_ioctlsocket(fd, FIONREAD, &available) != 0)
FD_ZERO(&read_fds);
FD_SET(fd, &read_fds);
struct timeval timeout = { 0, 0 };
int r = r_select(-1, &read_fds, NULL, NULL, &timeout);
if(r == -1)
{ {
unlock_sockets(); unlock_sockets();
return -1; return -1;
} }
else if(r == 0) else if(available == 0)
{ {
/* No packet waiting in underlying recv buffer. */ /* No packet waiting in underlying recv buffer. */
return 0; return 0;