85             VLOG("poll failed: %s", strerror(errno));  in read()
86             return -errno;  in read()
89                 VLOG("return event has error %s", strerror(errno));  in read()
90                 return errno != 0 ? -errno : UNKNOWN_ERROR;  in read()
95                     if (errno == EAGAIN || errno == EWOULDBLOCK) {  in read()
98                         VLOG("Fail to read %d: %s", fd, strerror(errno));  in read()
99                         return -errno;  in read()
131             VLOG("Fail to read %d: %s", fd, strerror(errno));  in readFully()
132             return -errno;  in readFully()
191             VLOG("Fail to poll: %s", strerror(errno));  in readProcessedDataInStream()
192             return -errno;  in readProcessedDataInStream()
202                 VLOG("fd[%d]=%d returns error events: %s", i, fd, strerror(errno));  in readProcessedDataInStream()
203                 return errno != 0 ? -errno : UNKNOWN_ERROR;  in readProcessedDataInStream()
216                 if (!(errno == EAGAIN || errno == EWOULDBLOCK)) {  in readProcessedDataInStream()
217                     VLOG("Fail to read fd %d: %s", fd, strerror(errno));  in readProcessedDataInStream()
218                     return -errno;  in readProcessedDataInStream()
238                 if (!(errno == EAGAIN || errno == EWOULDBLOCK)) {  in readProcessedDataInStream()
239                     VLOG("Fail to write toFd %d: %s", toFd.get(), strerror(errno));  in readProcessedDataInStream()
240                     return -errno;  in readProcessedDataInStream()
267             if (!(errno == EAGAIN || errno == EWOULDBLOCK)) {  in readProcessedDataInStream()
268                 VLOG("Fail to read fromFd %d: %s", fromFd.get(), strerror(errno));  in readProcessedDataInStream()
269                 return -errno;  in readProcessedDataInStream()