From b736f477f5324f79af30fc0f941ba0714a34ccda Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Fri, 10 Oct 2008 16:33:24 -0400 Subject: [PATCH] mieq: Backtrace when the queue overflows. Since we're probably stuck down in a driver somewhere, let's at least try to point out where. This will need to be rethought when the input thread work lands though. --- mi/mieq.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/mi/mieq.c b/mi/mieq.c index 0a1b740..062dede 100644 --- a/mi/mieq.c +++ b/mi/mieq.c @@ -169,6 +169,7 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e) oldtail = (oldtail - 1) % QUEUE_SIZE; } else { + static int stuck = 0; newtail = (oldtail + 1) % QUEUE_SIZE; /* Toss events which come in late. Usually this means your server's * stuck in an infinite loop somewhere, but SIGIO is still getting @@ -176,8 +177,13 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e) if (newtail == miEventQueue.head) { ErrorF("[mi] EQ overflowing. The server is probably stuck " "in an infinite loop.\n"); + if (!stuck) { + xorg_backtrace(); + stuck = 1; + } return; } + stuck = 0; miEventQueue.tail = newtail; } -- 1.6.0.1