mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-11-02 07:28:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

pipefs: make poll better

Browse Source
This commit is contained in:
Matheus
2024-06-23 18:13:16 -03:00
parent 017948a1aa
commit ad06298ab8
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/fs/pipefs.c
+3 -1
View File
@@ -73,7 +73,9 @@ static int internalpoll(vnode_t *node, polldata_t *data, int events) {
events |= POLLERR; events |= POLLERR;
if (pipenode->readers == 0) if (pipenode->readers == 0)
revents |= POLLERR; revents |= POLLERR;
else if (RINGBUFFER_DATACOUNT(&pipenode->data) < BUFFER_SIZE) // poll will only return POLLOUT if an atomic write can be done without blocking
// this is undocumented in POSIX but many unices implement it like this
else if (RINGBUFFER_DATACOUNT(&pipenode->data) < BUFFER_SIZE - PIPE_ATOMIC_SIZE)
revents |= POLLOUT; revents |= POLLOUT;
} }