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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-02-20 00:44:45 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-02-20 00:44:45 +0100 |
| commit | 604efaa3acb8cec0c4f8014cfadffdb5481df8f3 (patch) | |
| tree | 4579ef6c27083b83172dd8d0bc8b68ce843fd71a /hurd/hurdselect.c | |
| parent | 771f49d2ccbe999060fdd7121c5a16439d0c9d94 (diff) | |
Add comments and changelog
Diffstat (limited to 'hurd/hurdselect.c')
| -rw-r--r-- | hurd/hurdselect.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hurd/hurdselect.c b/hurd/hurdselect.c index d0214cb6df..58ded4e7a8 100644 --- a/hurd/hurdselect.c +++ b/hurd/hurdselect.c @@ -305,6 +305,8 @@ _hurd_select (int nfds, } } + /* GOT is the number of replies (or errors), while READY is the number of + replies with at least one type bit set. */ ready = 0; /* Now wait for reply messages. */ @@ -351,6 +353,8 @@ _hurd_select (int nfds, mach_msg_option_t options; error_t msgerr; + /* We rely on servers to implement the timeout, but when there are none, + do it on the client side. */ if (timeout != NULL && firstfd == -1) { options = MACH_RCV_TIMEOUT; @@ -392,6 +396,8 @@ _hurd_select (int nfds, err = EINTR; goto poll; } + /* Keep in mind msg.success.result can be 0 if a timeout + occurred. */ if (msg.error.err || #ifdef MACH_MSG_TYPE_BIT msg.success.result_type.word != inttype.word || |