--- libaitio/src/exec.c	2013/12/08 21:11:54	1.1.2.16
+++ libaitio/src/exec.c	2013/12/12 21:17:53	1.1.2.18
@@ -173,11 +173,64 @@ io_progCloseAt(prog_t * __restrict prg, u_int idx)
 }
 
 /*
+ * io_progOpen2() - Start program from pool on first unused slot
+ *
+ * @prg = program pool
+ * return: -1 error, >-1 reside at slot
+ */
+int
+io_progOpen2(prog_t * __restrict prg)
+{
+#ifdef POPEN_STREAM
+	FILE *f = NULL;
+#else
+	int f = -1;
+#endif
+	int stat, ret = -1;
+	register int i;
+	pid_t pid;
+
+	if (!prg)
+		return -1;
+	if (prg->prog_cnum + 1 > prg->prog_maxn) {
+		io_SetErr(EINVAL, "Requested number for program execution is over pool's limit");
+		return -1;
+	}
+
+	pthread_mutex_lock(&prg->prog_mtx);
+	for (i = 0; i < array_Size(prg->prog_fds); i++)
+		if (!array_Get(prg->prog_fds, i)) {
+			f = e_popen(prg->prog_name, "r+", &pid);
+#ifdef POPEN_STREAM
+			if (!f) {
+#else
+			if (f == -1) {
+#endif
+				LOGERR;
+				break;
+			} else if (waitpid(pid, &stat, WNOHANG)) {
+				io_SetErr(ECHILD, "Program with pid=%d exit with status %d", 
+						pid, WIFEXITED(stat) ? WEXITSTATUS(stat) : -1);
+				e_pclose(f);
+				break;
+			} else
+				array_Set(prg->prog_fds, i, f);
+			clrbit(prg->prog_used, i);
+			prg->prog_cnum++;
+			ret = i;
+			break;
+		}
+	pthread_mutex_unlock(&prg->prog_mtx);
+
+	return ret;
+}
+
+/*
  * io_progOpen() - Execute number of program(s)
  *
  * @prg = program pool
  * @execNum = execute program(s) (0 max)
- * return: 0 error, >0 executed programs and abs(<0) executed programs with logged error
+ * return: -1 error, >0 executed programs
  */
 int
 io_progOpen(prog_t * __restrict prg, u_int execNum)
@@ -192,10 +245,10 @@ io_progOpen(prog_t * __restrict prg, u_int execNum)
 	pid_t pid;
 
 	if (!prg)
-		return 0;
+		return -1;
 	if (prg->prog_cnum + execNum > prg->prog_maxn) {
 		io_SetErr(EINVAL, "Requested number for program execution is over pool's limit");
-		return 0;
+		return -1;
 	}
 
 	pthread_mutex_lock(&prg->prog_mtx);
@@ -213,6 +266,7 @@ io_progOpen(prog_t * __restrict prg, u_int execNum)
 			} else if (waitpid(pid, &stat, WNOHANG)) {
 				io_SetErr(ECHILD, "Program with pid=%d exit with status %d", 
 						pid, WIFEXITED(stat) ? WEXITSTATUS(stat) : -1);
+				e_pclose(f);
 				ret = -1;
 				break;
 			} else
@@ -231,7 +285,8 @@ io_progOpen(prog_t * __restrict prg, u_int execNum)
  *
  * @prg = program pool
  * @toNum = execute to number of programs (0 max)
- * return: 0 error, >0 executed programs and abs(<0) executed programs with logged error
+ * return: 0 error or nothing to do, 
+ * 	>0 executed programs and abs(<0) executed programs with logged error
  */
 int
 io_progGrow(prog_t * __restrict prg, u_int toNum)
@@ -244,7 +299,12 @@ io_progGrow(prog_t * __restrict prg, u_int toNum)
 	}
 	if (!toNum)
 		toNum = prg->prog_maxn;
+	if (toNum < prg->prog_inin)
+		toNum = prg->prog_inin;
 
+	if ((toNum - prg->prog_cnum) < 1)
+		return 0;
+
 	return io_progOpen(prg, toNum - prg->prog_cnum);
 }
 
@@ -302,7 +362,7 @@ io_progVacuum(prog_t * __restrict prg, u_int toNum)
  * io_progCheck() - Check exit status of program pool
  *
  * @prg = program pool
- * @re = resurrect program
+ * @re = resurrect program to init number
  * return: -1 error or >-1 exited programs
  */
 int
@@ -336,9 +396,9 @@ io_progCheck(prog_t * __restrict prg, int re)
 			}
 	pthread_mutex_unlock(&prg->prog_mtx);
 
-	/* resurrect */
-	if (re && ret > 0)
-		io_progOpen(prg, ret);
+	/* resurrect to init number */
+	if (re && prg->prog_inin - prg->prog_cnum)
+		io_progOpen(prg, prg->prog_inin - prg->prog_cnum);
 
 	return ret;
 }
@@ -383,6 +443,15 @@ io_progAttach(prog_t * __restrict prg, int newOne)
 			break;
 		}
 	pthread_mutex_unlock(&prg->prog_mtx);
+
+	/* not found free prog */
+	if (!f && (i = io_progOpen2(prg)) > 0) {
+#ifdef POPEN_STREAM
+		f = array(prg->prog_fds, i, FILE*);
+#else
+		f = array(prg->prog_fds, i, intptr_t);
+#endif
+	}
 
 	/* execute new one program */
 	if (newOne && f)