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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
2013-02-23 22:25:58 +00:00
parent 357da035b9
commit 3964309c67
86 changed files with 1218 additions and 1219 deletions
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18
cmd-switch-client.c
View File

@@ -28,7 +28,7 @@
*/
void cmd_switch_client_key_binding(struct cmd *, int);
enum cmd_retval cmd_switch_client_exec(struct cmd *, struct cmd_ctx *);
enum cmd_retval cmd_switch_client_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_switch_client_entry = {
"switch-client", "switchc",
@@ -58,45 +58,45 @@ cmd_switch_client_key_binding(struct cmd *self, int key)
}
enum cmd_retval
cmd_switch_client_exec(struct cmd *self, struct cmd_ctx *ctx)
cmd_switch_client_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct client *c;
struct session *s;
if ((c = cmd_find_client(ctx, args_get(args, 'c'), 0)) == NULL)
if ((c = cmd_find_client(cmdq, args_get(args, 'c'), 0)) == NULL)
return (CMD_RETURN_ERROR);
if (args_has(args, 'r')) {
if (c->flags & CLIENT_READONLY) {
c->flags &= ~CLIENT_READONLY;
ctx->info(ctx, "made client writable");
cmdq_info(cmdq, "made client writable");
} else {
c->flags |= CLIENT_READONLY;
ctx->info(ctx, "made client read-only");
cmdq_info(cmdq, "made client read-only");
}
}
s = NULL;
if (args_has(args, 'n')) {
if ((s = session_next_session(c->session)) == NULL) {
ctx->error(ctx, "can't find next session");
cmdq_error(cmdq, "can't find next session");
return (CMD_RETURN_ERROR);
}
} else if (args_has(args, 'p')) {
if ((s = session_previous_session(c->session)) == NULL) {
ctx->error(ctx, "can't find previous session");
cmdq_error(cmdq, "can't find previous session");
return (CMD_RETURN_ERROR);
}
} else if (args_has(args, 'l')) {
if (c->last_session != NULL && session_alive(c->last_session))
s = c->last_session;
if (s == NULL) {
ctx->error(ctx, "can't find last session");
cmdq_error(cmdq, "can't find last session");
return (CMD_RETURN_ERROR);
}
} else
s = cmd_find_session(ctx, args_get(args, 't'), 0);
s = cmd_find_session(cmdq, args_get(args, 't'), 0);
if (s == NULL)
return (CMD_RETURN_ERROR);