From 6f9976598dbdda23c229633bca5622326b556ea3 Mon Sep 17 00:00:00 2001
From: Yifan Gao <git@yfgao.com>
Date: Tue, 23 Jun 2020 00:14:13 +0800
Subject: [PATCH] exit with non-zero child thread status code

---
 common.sh   | 15 ++++++++++++++-
 generate.sh |  2 +-
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/common.sh b/common.sh
index ef00ea22..ac1ccf39 100755
--- a/common.sh
+++ b/common.sh
@@ -38,5 +38,18 @@ prepare_data(){
     curl -sSL https://bgp.potaroo.net/cidr/autnums.html | awk '-F[<>]' '{print $3,$5}' | grep '^AS' > asnames.txt &
     prepare_data_v4 &
     prepare_data_v6 &
-    wait
+    wait_exit
+}
+
+wait_exit(){
+    local oldstate=$(set +o)
+    set +e
+    local s=0
+    while [[ $s -ne 127 ]]; do
+        [[ $s -ne 0 ]] && exit $s
+        wait -n
+        s=$?
+    done
+    eval "$oldstate"
+    return 0
 }
diff --git a/generate.sh b/generate.sh
index ec5ba2ad..ad6be640 100755
--- a/generate.sh
+++ b/generate.sh
@@ -13,4 +13,4 @@ for file in operator/*.conf; do
 	get_asn $file | xargs bgptools -b rib6.txt | cidr-merger -s > result/${operator}6.txt &
 done
 
-wait
+wait_exit