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Add a command queue to standardize and simplify commands that call other

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commands and allow a command to block execution of subsequent
commands. This allows run-shell and if-shell to be synchronous which has
been much requested.

Each client has a default command queue and commands are consumed one at
a time from it. A command may suspend execution from the queue by
returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() -
for example run-shell does this from the callback that is fired after
the job is freed.

When the command queue becomes empty, command clients are automatically
exited (unless attaching). A callback is also fired - this is used for
nested commands in, for example, if-shell which can block execution of
the client's cmdq until a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the
old curclient/cmdclient distinction - a cmdq is bound to one client (or
none if in the configuration file), this is a command client if
c->session is NULL otherwise an attached client.
This commit is contained in:
Nicholas Marriott
2013-03-24 09:54:10 +00:00
parent 66edb3392b
commit 20636d956d
84 changed files with 1240 additions and 1187 deletions
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6
cmd-has-session.c
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@ -24,7 +24,7 @@
* Cause client to report an error and exit with 1 if session doesn't exist.
*/
enum cmd_retval cmd_has_session_exec(struct cmd *, struct cmd_ctx *);
enum cmd_retval cmd_has_session_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_has_session_entry = {
"has-session", "has",
@ -37,11 +37,11 @@ const struct cmd_entry cmd_has_session_entry = {
};
enum cmd_retval
cmd_has_session_exec(struct cmd *self, struct cmd_ctx *ctx)
cmd_has_session_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
if (cmd_find_session(ctx, args_get(args, 't'), 0) == NULL)
if (cmd_find_session(cmdq, args_get(args, 't'), 0) == NULL)
return (CMD_RETURN_ERROR);
return (CMD_RETURN_NORMAL);