--- a/src/hotspot/os/linux/os_linux.cpp Fri Oct 12 10:58:06 2018 +0200
+++ b/src/hotspot/os/linux/os_linux.cpp Tue Oct 09 16:08:07 2018 +0530
@@ -5676,10 +5676,16 @@
// or -1 on failure (e.g. can't fork a new process).
// Unlike system(), this function can be called from signal handler. It
// doesn't block SIGINT et al.
-int os::fork_and_exec(char* cmd) {
+int os::fork_and_exec(char* cmd, bool use_vfork_if_available) {
const char * argv[4] = {"sh", "-c", cmd, NULL};
- pid_t pid = fork();
+ pid_t pid ;
+
+ if (use_vfork_if_available) {
+ pid = vfork();
+ } else {
+ pid = fork();
+ }
if (pid < 0) {
// fork failed