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8027434: "-XX:OnOutOfMemoryError" uses fork instead of vfork

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Reviewed-by: dholmes, iklam
This commit is contained in:
Muthusamy Chinnathambi 2018-10-09 16:08:07 +05:30
parent cfb6fb66c2
commit cbe11130f5
7 changed files with 14 additions and 8 deletions
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10
src/hotspot/os/linux/os_linux.cpp
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@ -5676,10 +5676,16 @@ extern char** environ;
// 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