implement aeWait using poll(2). Fixes issue #267.

src/ae.c

@@ -35,6 +35,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <poll.h>
+#include <string.h>
 
 #include "ae.h"
 #include "zmalloc.h"
@@ -358,21 +360,17 @@ int aeProcessEvents(aeEventLoop *eventLoop, int flags)
 /* Wait for millseconds until the given file descriptor becomes
  * writable/readable/exception */
 int aeWait(int fd, int mask, long long milliseconds) {
-    struct timeval tv;
-    fd_set rfds, wfds, efds;
+    struct pollfd pfd;
     int retmask = 0, retval;
 
-    tv.tv_sec = milliseconds/1000;
-    tv.tv_usec = (milliseconds%1000)*1000;
-    FD_ZERO(&rfds);
-    FD_ZERO(&wfds);
-    FD_ZERO(&efds);
-
-    if (mask & AE_READABLE) FD_SET(fd,&rfds);
-    if (mask & AE_WRITABLE) FD_SET(fd,&wfds);
-    if ((retval = select(fd+1, &rfds, &wfds, &efds, &tv)) > 0) {
-        if (FD_ISSET(fd,&rfds)) retmask |= AE_READABLE;
-        if (FD_ISSET(fd,&wfds)) retmask |= AE_WRITABLE;
+    memset(&pfd, 0, sizeof(pfd));
+    pfd.fd = fd;
+    if (mask & AE_READABLE) pfd.events |= POLLIN;
+    if (mask & AE_WRITABLE) pfd.events |= POLLOUT;
+
+    if ((retval = poll(&pfd, 1, milliseconds))== 1) {
+        if (pfd.revents & POLLIN) retmask |= AE_READABLE;
+        if (pfd.revents & POLLOUT) retmask |= AE_WRITABLE;
         return retmask;
     } else {
         return retval;