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8184808: (process) isAlive should use pid for validity, not /proc/pid

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Reviewed-by: stuefe, xiaofeya
This commit is contained in:
Roger Riggs 2017-07-19 16:24:38 -04:00
parent 9d44112c17
commit 5165b80762
1 changed files with 5 additions and 0 deletions
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5
jdk/src/java.base/unix/native/libjava/ProcessHandleImpl_unix.c
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@ -662,6 +662,11 @@ pid_t unix_getParentPidAndTimings(JNIEnv *env, pid_t pid,
return -1;
}
// Validate the pid before returning the info in case /proc/pid is racy
if (kill(pid, 0) < 0) {
return -1;
}
*totalTime = psinfo.pr_time.tv_sec * 1000000000L + psinfo.pr_time.tv_nsec;
*startTime = psinfo.pr_start.tv_sec * (jlong)1000 +