diff options
Diffstat (limited to 'src/core/aio.h')
| -rw-r--r-- | src/core/aio.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/core/aio.h b/src/core/aio.h index 09923d7f..4f190aa1 100644 --- a/src/core/aio.h +++ b/src/core/aio.h @@ -104,8 +104,12 @@ extern int nni_aio_list_active(nni_aio *); // nni_aio_finish is called by the provider when an operation is complete. // The provider gives the result code (0 for success, an NNG errno otherwise), -// and the amount of data transferred (if any). -extern void nni_aio_finish(nni_aio *, int, size_t); +// and the amount of data transferred (if any). If the return code is +// non-zero, it indicates that the operation failed (usually because the aio +// was already canceled.) This is important for providers that need to +// prevent resources (new pipes for example) from accidentally leaking +// during close operations. +extern int nni_aio_finish(nni_aio *, int, size_t); // nni_aio_cancel is used to cancel an operation. Any pending I/O or // timeouts are canceled if possible, and the callback will be returned |