remove target_acknowledge_created_inferior

This target_ops routine appears to be unused in practice, so this patch
removes it.

gdb/ChangeLog:

        * inf-child.c (inf_child_acknowledge_created_inferior): Delete.
        (inf_child_target): Do not set t->to_acknowledge_created_inferior.
        * inf-ptrace.c (inf_ptrace_create_inferior): Remove call to
        target_acknowledge_created_inferior.
        * inf-ttrace.c (inf_ttrace_him): Likewise.
        * target.h (struct target_ops): Delete to_acknowledge_created_inferior
        field.
        (target_acknowledge_created_inferior): Delete.
        * target.c (update_current_target): Remove setting of
        to_acknowledge_created_inferior field. Do default value for that
        field either.
        (debug_to_acknowledge_created_inferior): Delete.
        (setup_target_debug): Remove setting of
        current_target.to_acknowledge_created_inferior.

1 files changed, 0 insertions, 7 deletions

diff --git a/gdb/inf-ptrace.c b/gdb/inf-ptrace.c
index 440f2ed7e7f..d64c5195fc3 100644
--- a/gdb/inf-ptrace.c
+++ b/gdb/inf-ptrace.c
@@ -139,13 +139,6 @@ inf_ptrace_create_inferior (struct target_ops *ops,
   if (! ops_already_pushed)
     discard_cleanups (back_to);
 
-  /* On some targets, there must be some explicit synchronization
-     between the parent and child processes after the debugger
-     forks, and before the child execs the debuggee program.  This
-     call basically gives permission for the child to exec.  */
-
-  target_acknowledge_created_inferior (pid);
-
   /* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h, and will
      be 1 or 2 depending on whether we're starting without or with a
      shell.  */