[hackers] [sbase] Factor out waiting for children into a separate function || sin

[git]

commit 20c0a0b1e759d2bc171694c8e290146c60c61e31
Author: sin <s...@2f30.org>
Date:   Tue Jan 7 14:50:59 2014 +0000

    Factor out waiting for children into a separate function

diff --git a/xargs.c b/xargs.c
index b77c90f..77da254 100644
--- a/xargs.c
+++ b/xargs.c
@@ -20,6 +20,7 @@ static int parsequote(int);
 static int parseescape(void);
 static char *poparg(void);
 static void pusharg(char *);
+static void waitchld(void);
 static void runcmd(void);
 
 static char **cmd;
@@ -232,20 +233,10 @@ pusharg(char *arg)
 }
 
 static void
-runcmd(void)
+waitchld(void)
 {
-       pid_t pid;
-       int status, saved_errno;
+       int status;
 
-       pid = fork();
-       if (pid < 0)
-               eprintf("fork:");
-       if (pid == 0) {
-               execvp(*cmd, cmd);
-               saved_errno = errno;
-               weprintf("execvp %s:", *cmd);
-               _exit(saved_errno == ENOENT ? 127 : 126);
-       }
        wait(&status);
        if (WIFEXITED(status)) {
                if (WEXITSTATUS(status) == 255)
@@ -259,3 +250,21 @@ runcmd(void)
        if (WIFSIGNALED(status))
                exit(125);
 }
+
+static void
+runcmd(void)
+{
+       pid_t pid;
+       int saved_errno;
+
+       pid = fork();
+       if (pid < 0)
+               eprintf("fork:");
+       if (pid == 0) {
+               execvp(*cmd, cmd);
+               saved_errno = errno;
+               weprintf("execvp %s:", *cmd);
+               _exit(saved_errno == ENOENT ? 127 : 126);
+       }
+       waitchld();
+}