77             VLOG("poll failed: %s", strerror(errno));  in read()
78             return -errno;  in read()
81                 VLOG("return event has error %s", strerror(errno));  in read()
82                 return errno != 0 ? -errno : UNKNOWN_ERROR;  in read()
87                     if (errno == EAGAIN || errno == EWOULDBLOCK) {  in read()
90                         VLOG("Fail to read %d: %s", fd, strerror(errno));  in read()
91                         return -errno;  in read()
123             VLOG("Fail to read %d: %s", fd, strerror(errno));  in readFully()
124             return -errno;  in readFully()
183             VLOG("Fail to poll: %s", strerror(errno));  in readProcessedDataInStream()
184             return -errno;  in readProcessedDataInStream()
194                 VLOG("fd[%d]=%d returns error events: %s", i, fd, strerror(errno));  in readProcessedDataInStream()
195                 return errno != 0 ? -errno : UNKNOWN_ERROR;  in readProcessedDataInStream()
208                 if (!(errno == EAGAIN || errno == EWOULDBLOCK)) {  in readProcessedDataInStream()
209                     VLOG("Fail to read fd %d: %s", fd, strerror(errno));  in readProcessedDataInStream()
210                     return -errno;  in readProcessedDataInStream()
230                 if (!(errno == EAGAIN || errno == EWOULDBLOCK)) {  in readProcessedDataInStream()
231                     VLOG("Fail to write toFd %d: %s", toFd.get(), strerror(errno));  in readProcessedDataInStream()
232                     return -errno;  in readProcessedDataInStream()
259             if (!(errno == EAGAIN || errno == EWOULDBLOCK)) {  in readProcessedDataInStream()
260                 VLOG("Fail to read fromFd %d: %s", fromFd.get(), strerror(errno));  in readProcessedDataInStream()
261                 return -errno;  in readProcessedDataInStream()