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librados: add rados_aio_create_completion2()

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rados_aio_create_completion2() is almost identical to
rados_aio_create_completion(). the only difference is that the former
does not accept the `safe` callback. as it's an alias of `complete`
callback since af01db76f6

Signed-off-by: Kefu Chai <kchai@redhat.com>
This commit is contained in:
Kefu Chai 2019-10-22 14:15:58 +08:00
parent 46fa68eb10
commit c2d6788aaa
3 changed files with 52 additions and 1 deletions
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19
src/include/rados/librados.h
View File

@ -1857,7 +1857,7 @@ typedef void (*rados_callback_t)(rados_completion_t cb, void *arg);
*
* @param cb_arg application-defined data passed to the callback functions
* @param cb_complete the function to be called when the operation is
* in memory on all relpicas
* in memory on all replicas
* @param cb_safe the function to be called when the operation is on
* stable storage on all replicas
* @param pc where to store the completion
@ -1868,6 +1868,23 @@ CEPH_RADOS_API int rados_aio_create_completion(void *cb_arg,
rados_callback_t cb_safe,
rados_completion_t *pc);
/**
* Constructs a completion to use with asynchronous operations
*
* The complete callback corresponds to operation being acked.
*
* @note BUG: this should check for ENOMEM instead of throwing an exception
*
* @param cb_arg application-defined data passed to the callback functions
* @param cb_complete the function to be called when the operation is committed
* on all replicas
* @param pc where to store the completion
* @returns 0
*/
CEPH_RADOS_API int rados_aio_create_completion2(void *cb_arg,
rados_callback_t cb_complete,
rados_completion_t *pc);
/**
* Block until an operation completes
*

14
src/librados/librados_c.cc
View File

@ -2240,6 +2240,20 @@ extern "C" int _rados_aio_create_completion(void *cb_arg,
}
LIBRADOS_C_API_BASE_DEFAULT(rados_aio_create_completion);
extern "C" int _rados_aio_create_completion2(void *cb_arg,
rados_callback_t cb_complete,
rados_completion_t *pc)
{
tracepoint(librados, rados_aio_create_completion2_enter, cb_arg, cb_complete);
librados::AioCompletionImpl *c = new librados::AioCompletionImpl;
if (cb_complete)
c->set_complete_callback(cb_arg, cb_complete);
*pc = c;
tracepoint(librados, rados_aio_create_completion2_exit, 0, *pc);
return 0;
}
LIBRADOS_C_API_BASE_DEFAULT(rados_aio_create_completion2);
extern "C" int _rados_aio_wait_for_complete(rados_completion_t c)
{
tracepoint(librados, rados_aio_wait_for_complete_enter, c);

20
src/tracing/librados.tp
View File

@ -1991,6 +1991,26 @@ TRACEPOINT_EVENT(librados, rados_aio_create_completion_exit,
)
)
TRACEPOINT_EVENT(librados, rados_aio_create_completion2_enter,
TP_ARGS(
void*, cb_arg,
rados_callback_t, cb_complete),
TP_FIELDS(
ctf_integer_hex(void*, cb_arg, cb_arg)
ctf_integer_hex(rados_callback_t, cb_complete, cb_complete)
)
)
TRACEPOINT_EVENT(librados, rados_aio_create_completion2_exit,
TP_ARGS(
int, retval,
rados_completion_t, completion),
TP_FIELDS(
ctf_integer(int, retval, retval)
ctf_integer_hex(rados_completion_t, completion, completion)
)
)
TRACEPOINT_EVENT(librados, rados_aio_wait_for_complete_enter,
TP_ARGS(
rados_completion_t, completion),