Files
linuxcncAllWasm/tests/ui-smoke/_lib/crashdump.sh
2026-08-20 06:17:39 +08:00

46 lines
1.9 KiB
Bash

#!/bin/bash
# Native crash capture for the UI smoke launchers. A GUI segfault is the
# failure these tests most need to explain, and it lands in C/C++ (Qt,
# dbus, GL) where PYTHONFAULTHANDLER stops at the event-loop frame. Arm a
# core dump before launch; after the run, if the GUI left a core, print a
# native backtrace into the log so CI shows the faulting frame directly.
# Source with LIB_DIR set; runs only on the failure path, so green runs
# pay nothing.
crashdump_arm() {
CORE_DIR="$(mktemp -d -t ui-smoke-cores.XXXXXX)"
export CORE_DIR
ulimit -c unlimited 2>/dev/null || true
# core_pattern is global; only set it if already root. Never sudo:
# the suite must run unattended. Non-root falls back to a cwd "core".
if [ "$(id -u)" = 0 ]; then
sysctl -w "kernel.core_pattern=$CORE_DIR/core.%e.%p" >/dev/null 2>&1 || true
fi
}
crashdump_report() {
[ -n "${CORE_DIR:-}" ] || return 0
local core
# shellcheck disable=SC2012 # mktemp dir, no odd filenames
core=$(ls -t "$CORE_DIR"/core* ./core* /tmp/core* 2>/dev/null | head -1)
if [ -n "$core" ]; then
echo "=== crash: native backtrace ($core) ==="
# gdb reads the core; pull it in if missing, only when root.
if ! command -v gdb >/dev/null 2>&1 && [ "$(id -u)" = 0 ]; then
apt-get install -y -q gdb >/dev/null 2>&1 || true
fi
if command -v gdb >/dev/null 2>&1; then
# "bt" first: gdb auto-selects the faulting thread on a SIGSEGV
# core. "thread apply all bt" after gives the rest.
gdb -batch -nx \
-ex "bt" \
-ex "echo \n=== all threads ===\n" \
-ex "thread apply all bt" \
"$(command -v python3)" "$core" 2>&1 | head -400
else
echo "(gdb unavailable; core left at $core)"
fi
fi
rm -rf "$CORE_DIR"
}