From 3d7a6e41c62883a131df2e291f3565599bfe4292 Mon Sep 17 00:00:00 2001
From: Gregory Burd <greg@basho.com>
Date: Sun, 4 Dec 2011 15:04:55 -0500
Subject: [PATCH] Use a more portable method to determine if PID is alive or
 not.

---
 c_src/bdberl_tpool.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/c_src/bdberl_tpool.c b/c_src/bdberl_tpool.c
index 4411173..1da0487 100644
--- a/c_src/bdberl_tpool.c
+++ b/c_src/bdberl_tpool.c
@@ -33,11 +33,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <pthread.h>
 #include <signal.h>
 #include <errno.h>
-#include <sys/stat.h>
-#include <sys/types.h>
+#include <pthread.h>
 
 static void* bdberl_tpool_main(void* tpool);
 static TPoolJob* next_job(TPool* tpool);
@@ -390,12 +388,9 @@ char *bdberl_tpool_thread_id_string(DB_ENV *dbenv, pid_t pid, db_threadid_t tid,
 // alive, ignore the thread ID.
 int bdberl_tpool_thread_is_alive(DB_ENV *dbenv, pid_t pid, db_threadid_t tid, u_int32_t flags)
 {
-    static char path[200];
-    static struct stat sb;
     int alive = 0;
 
-    snprintf(path, 200, "/dev/%d/status", pid);
-    if (stat(path, &sb))
+    if (kill(pid, 0) != ESRCH)
     {
         if (flags & DB_MUTEX_PROCESS_ONLY)
             alive = 1;