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Try again when wl_display.flush() returns EAGAIN

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This was causing us to exist when we probably shouldn't have been.
I think the main issue was all the syncNextCommit calls for the bar.

These changes have seeminglly fixed my crash
This commit is contained in:
Ben Buhse 2026-02-27 13:39:08 -06:00
commit f10eecffc4
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2 changed files with 10 additions and 5 deletions
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13
src/main.zig
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@ -124,9 +124,16 @@ fn run(wl_display: *wl.Display, context: *Context) !void {
};
while (true) {
const errno = wl_display.flush();
if (errno != .SUCCESS) {
fatal("wl_display flush failed: E{s}", .{@tagName(errno)});
const flush_errno = wl_display.flush();
if (flush_errno == .AGAIN) {
// Send buffer is full; ask poll to wake us when the socket is writable
// again so we can retry the flush at the top of the next iteration.
pollfds[poll_wayland].events = posix.POLL.IN | posix.POLL.OUT;
} else if (flush_errno != .SUCCESS) {
fatal("wl_display flush failed: E{s}", .{@tagName(flush_errno)});
} else {
// Flush succeeded; stop polling for writability.
pollfds[poll_wayland].events = posix.POLL.IN;
}
// Get the number of milliseconds to the top of the next second