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| author | Michael Brown | 2010-09-02 04:34:04 +0200 |
|---|---|---|
| committer | Michael Brown | 2010-09-03 22:28:43 +0200 |
| commit | 28934eef81b3c7a494b12cb87804098041d64659 (patch) | |
| tree | da46f478f9977bca4c06f5e71dc37a0066948237 /src/include/ipxe | |
| parent | [process] Add process_running() (diff) | |
| download | ipxe-28934eef81b3c7a494b12cb87804098041d64659.tar.gz ipxe-28934eef81b3c7a494b12cb87804098041d64659.tar.xz ipxe-28934eef81b3c7a494b12cb87804098041d64659.zip | |
[retry] Hold reference while timer is running and during expiry callback
Guarantee that a retry timer cannot go out of scope while the timer is
running, and provide a guarantee to the expiry callback that the timer
will remain in scope during the entire callback (similar to the
guarantee provided to interface methods).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ipxe')
| -rw-r--r-- | src/include/ipxe/retry.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/include/ipxe/retry.h b/src/include/ipxe/retry.h index ff26de252..d2ea27fb2 100644 --- a/src/include/ipxe/retry.h +++ b/src/include/ipxe/retry.h @@ -49,6 +49,12 @@ struct retry_timer { * timeout has already exceeded @c MAX_TIMEOUT. */ void ( * expired ) ( struct retry_timer *timer, int over ); + /** Reference counter + * + * If this interface is not part of a reference-counted + * object, this field may be NULL. + */ + struct refcnt *refcnt; }; /** @@ -56,11 +62,14 @@ struct retry_timer { * * @v timer Retry timer * @v expired Timer expired callback + * @v refcnt Reference counter, or NULL */ static inline __attribute__ (( always_inline )) void timer_init ( struct retry_timer *timer, - void ( * expired ) ( struct retry_timer *timer, int over ) ) { + void ( * expired ) ( struct retry_timer *timer, int over ), + struct refcnt *refcnt ) { timer->expired = expired; + timer->refcnt = refcnt; } extern void start_timer ( struct retry_timer *timer ); |