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authorAnel Husakovic <anel@mariadb.org>2020-10-06 17:43:13 +0200
committerAnel Husakovic <anel@mariadb.org>2020-10-17 13:07:57 +0200
commit95bb3cb886cb64be3ee5ace660bb78618dd4c1d0 (patch)
treecf7980853bee57da000fb91fc4a3f1b95f333595 /scripts
parentdb02c458c9db93e754b8ae259d8c276fa3bb44f1 (diff)
downloadmariadb-git-95bb3cb886cb64be3ee5ace660bb78618dd4c1d0.tar.gz
MDEV-16676 Using malloc-lib=jemalloc in MariaDB 10.2 causes non-critical error about missing mysql_config on startup
- This commit is based on patch 84fe9720a4d2483ff67b6a and suggestion of Jean Weisbuch to use `ldconfig -p` - Format of ldconfig output: "libjemalloc.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libjemalloc.so.1" ``` $ ./scripts/mysqld_safe 201013 13:36:50 mysqld_safe Adding '/usr/lib/x86_64-linux-gnu/libjemalloc.so.1' to LD_PRELOAD for mysqld 201013 13:36:50 mysqld_safe Logging to '/home/anel/builds/data-10.5/mysqld_safe_anel.err'. 201013 13:36:50 mysqld_safe Starting mysqld daemon with databases from /home/anel/builds/data-10.5 ``` Reviewed by: Daniel Black, Faustin Lammler
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mysqld_safe.sh54
1 files changed, 19 insertions, 35 deletions
diff --git a/scripts/mysqld_safe.sh b/scripts/mysqld_safe.sh
index 07fa304a4cf..0110653be90 100644
--- a/scripts/mysqld_safe.sh
+++ b/scripts/mysqld_safe.sh
@@ -456,25 +456,10 @@ mysqld_ld_preload_text() {
echo "$text"
}
-
-mysql_config=
-get_mysql_config() {
- if [ -z "$mysql_config" ]; then
- mysql_config=`echo "$0" | sed 's,/[^/][^/]*$,/mysql_config,'`
- if [ ! -x "$mysql_config" ]; then
- log_error "Can not run mysql_config $@ from '$mysql_config'"
- exit 1
- fi
- fi
-
- "$mysql_config" "$@"
-}
-
-
# set_malloc_lib LIB
# - If LIB is empty, do nothing and return
-# - If LIB starts with 'tcmalloc' or 'jemalloc', look for the shared library in
-# /usr/lib, /usr/lib64 and then pkglibdir.
+# - If LIB starts with 'tcmalloc' or 'jemalloc', look for the shared library
+# using `ldconfig`.
# tcmalloc is part of the Google perftools project.
# - If LIB is an absolute path, assume it is a malloc shared library
#
@@ -482,28 +467,28 @@ get_mysql_config() {
# running mysqld. See ld.so for details.
set_malloc_lib() {
malloc_lib="$1"
-
if expr "$malloc_lib" : "\(tcmalloc\|jemalloc\)" > /dev/null ; then
- pkglibdir=`get_mysql_config --variable=pkglibdir`
- where=''
- # This list is kept intentionally simple. Simply set --malloc-lib
- # to a full path if another location is desired.
- for libdir in /usr/lib /usr/lib64 "$pkglibdir" "$pkglibdir/mysql"; do
- tmp=`echo "$libdir/lib$malloc_lib.so".[0-9]`
- where="$where $libdir"
- # log_notice "DEBUG: Checking for malloc lib '$tmp'"
- [ -r "$tmp" ] || continue
- malloc_lib="$tmp"
- where=''
- break
- done
+ if ! my_which ldconfig > /dev/null 2>&1
+ then
+ log_error "ldconfig command not found, required for ldconfig -p"
+ exit 1
+ fi
+ # format from ldconfig:
+ # "libjemalloc.so.1 (libc6,x86-64) => /usr/lib/x86_64-linux-gnu/libjemalloc.so.1"
+ libmalloc_path="$(ldconfig -p | sed -n "/lib${malloc_lib}/p" | cut -d '>' -f2)"
- if [ -n "$where" ]; then
- log_error "no shared library for lib$malloc_lib.so.[0-9] found in$where"
+ if [ -z "$libmalloc_path" ]; then
+ log_error "no shared library for lib$malloc_lib.so.[0-9] found."
exit 1
fi
- fi
+ for f in $libmalloc_path; do
+ if [ -f "$f" ]; then
+ malloc_lib=$f # get the first path if many
+ break
+ fi
+ done
+ fi
# Allow --malloc-lib='' to override other settings
[ -z "$malloc_lib" ] && return
@@ -520,7 +505,6 @@ set_malloc_lib() {
exit 1
;;
esac
-
add_mysqld_ld_preload "$malloc_lib"
}