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Inject hangup event in owning thread

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When a hangup event needs to be inserted into all DCBs referring
to a particular server, it is done in the worker thread that owns
the DCB.
This commit is contained in:
Johan Wikman
2017-02-16 16:25:16 +02:00
parent 7844680c7d
commit 6c3c96cb7e
3 changed files with 55 additions and 17 deletions
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33
server/core/dcb.cc
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@ -98,6 +98,7 @@
#include "maxscale/session.h"
#include "maxscale/modules.h"
#include "maxscale/queuemanager.h"
#include "maxscale/worker.h"
/* A DCB with null values, used for initialization */
static DCB dcb_initialized;
@ -2243,6 +2244,18 @@ dcb_isvalid(DCB *dcb)
return dcb && !dcb->dcb_is_zombie;
}
static void dcb_hangup_foreach_worker(int thread_id, struct server* server)
{
for (DCB *dcb = all_dcbs[thread_id]; dcb; dcb = dcb->thread.next)
{
if (dcb->state == DCB_STATE_POLLING && dcb->server &&
dcb->server == server)
{
poll_fake_hangup_event(dcb);
}
}
}
/**
* Call all the callbacks on all DCB's that match the server and the reason given
*
@ -2251,24 +2264,10 @@ dcb_isvalid(DCB *dcb)
void
dcb_hangup_foreach(struct server* server)
{
int nthr = config_threadcount();
intptr_t arg1 = (intptr_t)dcb_hangup_foreach_worker;
intptr_t arg2 = (intptr_t)server;
for (int i = 0; i < nthr; i++)
{
spinlock_acquire(&all_dcbs_lock[i]);
for (DCB *dcb = all_dcbs[i]; dcb; dcb = dcb->thread.next)
{
if (dcb->state == DCB_STATE_POLLING && dcb->server &&
dcb->server == server)
{
poll_fake_hangup_event(dcb);
}
}
spinlock_release(&all_dcbs_lock[i]);
}
mxs_worker_broadcast_message(MXS_WORKER_MSG_CALL, arg1, arg2);
}
/**