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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
Download Patch File Download Diff File Expand all files Collapse all files

10
cmd-rename-session.c
View File

@ -26,7 +26,7 @@
* Change session name.
*/
enum cmd_retval cmd_rename_session_exec(struct cmd *, struct cmd_ctx *);
enum cmd_retval cmd_rename_session_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_rename_session_entry = {
"rename-session", "rename",
@ -39,7 +39,7 @@ const struct cmd_entry cmd_rename_session_entry = {
};
enum cmd_retval
cmd_rename_session_exec(struct cmd *self, struct cmd_ctx *ctx)
cmd_rename_session_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct session *s;
@ -47,15 +47,15 @@ cmd_rename_session_exec(struct cmd *self, struct cmd_ctx *ctx)
newname = args->argv[0];
if (!session_check_name(newname)) {
ctx->error(ctx, "bad session name: %s", newname);
cmdq_error(cmdq, "bad session name: %s", newname);
return (CMD_RETURN_ERROR);
}
if (session_find(newname) != NULL) {
ctx->error(ctx, "duplicate session: %s", newname);
cmdq_error(cmdq, "duplicate session: %s", newname);
return (CMD_RETURN_ERROR);
}
if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
return (CMD_RETURN_ERROR);
RB_REMOVE(sessions, &sessions, s);