diff options
Diffstat (limited to 'erts/emulator/drivers/unix/unix_efile.c')
| -rw-r--r-- | erts/emulator/drivers/unix/unix_efile.c | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/erts/emulator/drivers/unix/unix_efile.c b/erts/emulator/drivers/unix/unix_efile.c index 05c2f1fce9..3a966757d9 100644 --- a/erts/emulator/drivers/unix/unix_efile.c +++ b/erts/emulator/drivers/unix/unix_efile.c @@ -1469,31 +1469,27 @@ efile_fadvise(Efile_error* errInfo, int fd, Sint64 offset, } #ifdef HAVE_SENDFILE +#define SENDFILE_CHUNK_SIZE ((1 << 30) - 1) int efile_sendfile(Efile_error* errInfo, int in_fd, int out_fd, - off_t offset, size_t *nbytes) + off_t *offset, size_t *nbytes) { #if defined(__linux__) || (defined(__sun) && defined(__SVR4)) - ssize_t retval, nbytes_sent = 0; + ssize_t retval, written = 0; + // printf("sendfile(%d,%d,%d,%d)\r\n",out_fd,in_fd,*offset,*nbytes); if (*nbytes == 0) { - *nbytes = (1 << 20) - 1; do { - retval = sendfile(out_fd, in_fd, &offset, *nbytes); - nbytes_sent += retval; - printf("retval: %d, errno: %d, offset: %d, nbytes: %d\r\n", retval, errno, offset,*nbytes); - } while ((retval == -1 && errno == EINTR) - || (retval > 0 && errno == EAGAIN)); + *nbytes = SENDFILE_CHUNK_SIZE; // chunk size + retval = sendfile(out_fd, in_fd, offset, *nbytes); + if (retval > 0) + written += retval; + } while (retval == SENDFILE_CHUNK_SIZE); } else { - do { - retval = sendfile(out_fd, in_fd, &offset, *nbytes); - if (retval > 0) { - nbytes_sent += retval; - *nbytes -= retval; - } - } while ((retval == -1 && errno == EINTR) - || (*nbytes > 0 && errno == EAGAIN)); + retval = sendfile(out_fd, in_fd, offset, *nbytes); + if (retval > 0) + written = retval; } - *nbytes = nbytes_sent; + *nbytes = written; return check_error(retval == -1 ? -1 : 0, errInfo); #elif defined(DARWIN) off_t len = *nbytes; |