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libplugin: make timers have a "command" context.

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This is cleaner: everything can now be associated with a command
context.

You're supposed to eventually dispose of it using timer_complete().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2024-11-06 21:22:36 +10:30
parent 45f56f8e5d
commit 7ce30e2873
8 changed files with 136 additions and 83 deletions
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39
plugins/libplugin.h
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@@ -433,27 +433,42 @@ struct command_result *forward_result(struct command *cmd,
/* Callback for timer where we expect a 'command_result'. All timers
* must return this eventually, though they may do so via a convoluted
* send_req() path. */
struct command_result *timer_complete(struct plugin *p);
struct command_result *timer_complete(struct command *cmd);
/* Signals that we've completed a command. Useful for when
* there's no `cmd` present */
* there's no `cmd` present. Deprecated! */
struct command_result *command_done(void);
/* Access timer infrastructure to add a timer.
/* Access timer infrastructure to add a global timer for the plugin.
*
* Freeing this releases the timer, otherwise it's freed after @cb
* if it hasn't been freed already.
* This is a timer with the same lifetime as the plugin.
*/
struct plugin_timer *plugin_timer_(struct plugin *p,
struct plugin_timer *global_timer_(struct plugin *p,
struct timerel t,
void (*cb)(void *cb_arg),
struct command_result *(*cb)(struct command *cmd, void *cb_arg),
void *cb_arg);
#define plugin_timer(plugin, time, cb, cb_arg) \
plugin_timer_((plugin), (time), \
typesafe_cb(void, void *, \
(cb), (cb_arg)), \
(cb_arg)) \
#define global_timer(plugin, time, cb, cb_arg) \
global_timer_((plugin), (time), \
typesafe_cb_preargs(struct command_result *, \
void *, \
(cb), (cb_arg), \
struct command *), \
(cb_arg)) \
/* Timer based off specific cmd */
struct plugin_timer *command_timer_(struct command *cmd,
struct timerel t,
struct command_result *(*cb)(struct command *cmd, void *cb_arg),
void *cb_arg);
#define command_timer(cmd, time, cb, cb_arg) \
command_timer_((cmd), (time), \
typesafe_cb_preargs(struct command_result *, \
void *, \
(cb), (cb_arg), \
struct command *), \
(cb_arg)) \
/* Log something */
void plugin_log(struct plugin *p, enum log_level l, const char *fmt, ...) PRINTF_FMT(3, 4);