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*: introduce and use xfork()

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function                                             old     new   delta
xfork                                                  -      20     +20
msh_main                                            1377    1380      +3
mod_process                                          455     446      -9
forkexit_or_rexec                                     30      17     -13
expand_variables                                    1434    1421     -13
open_transformer                                      91      76     -15
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/4 up/down: 23/-50)            Total: -27 bytes
This commit is contained in:
Denis Vlasenko
2008-07-01 11:11:24 +00:00
parent 49b5c516b5
commit 58d60c3333
7 changed files with 19 additions and 18 deletions
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8
shell/hush.c
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@@ -1902,7 +1902,7 @@ static int run_pipe(struct pipe *pi)
#endif
if (child->pid < 0) { /* [v]fork failed */
/* Clearly indicate, was it fork or vfork */
bb_perror_msg(BB_MMU ? "fork" : "vfork");
bb_perror_msg(BB_MMU ? "vfork" + 1 : "vfork");
} else {
pi->alive_progs++;
#if ENABLE_HUSH_JOB
@@ -3096,11 +3096,7 @@ static FILE *generate_stream_from_list(struct pipe *head)
* huge=`cat TESTFILE` # will block here forever
* echo OK
*/
pid = BB_MMU ? fork() : xvfork();
#if BB_MMU
if (pid < 0)
bb_perror_msg_and_die("fork");
#endif
pid = BB_MMU ? xfork() : xvfork();
if (pid == 0) { /* child */
if (ENABLE_HUSH_JOB)
die_sleep = 0; /* let nofork's xfuncs die */