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MXS-1848 Change prototype of startMonitor

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StartMonitor() now takes a MXS_MONITOR_INSTANCE and returns
true, if the monitor could be started and false otherwise.
So, the setup is such that in createInstance(), the instance
data is created and then using startMonitor() and stopMonitor()
the monitor is started/stopped. Finally in destroyInstance(),
the actual instance data is deleted.
This commit is contained in:
Johan Wikman
2018-05-07 11:31:27 +03:00
parent 5c1083c4aa
commit 44fa2a4be2
10 changed files with 208 additions and 243 deletions
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34
server/modules/monitor/grmon/grmon.cc
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@ -75,27 +75,6 @@ GRMon* GRMon::create(MXS_MONITOR* monitor)
return mon;
}
GRMon* GRMon::create_and_start(MXS_MONITOR* monitor, const MXS_CONFIG_PARAMETER* params)
{
GRMon* instance = static_cast<GRMon*>(monitor->instance);
if (!instance)
{
instance = create(monitor);
}
if (instance)
{
if (!instance->start(params))
{
delete instance;
instance = NULL;
}
}
return instance;
}
bool GRMon::start(const MXS_CONFIG_PARAMETER* params)
{
bool started = false;
@ -122,8 +101,12 @@ void GRMon::main(void* data)
void GRMon::stop()
{
ss_dassert(m_thread);
atomic_store_int32(&m_shutdown, 1);
thread_wait(m_thread);
m_thread = 0;
m_shutdown = 0;
}
static MXS_MONITOR_INSTANCE* createInstance(MXS_MONITOR *mon)
@ -144,10 +127,9 @@ static void destroyInstance(MXS_MONITOR_INSTANCE* mon)
*
* @return A handle to use when interacting with the monitor
*/
static MXS_MONITOR_INSTANCE *
startMonitor(MXS_MONITOR *mon, const MXS_CONFIG_PARAMETER *params)
static bool startMonitor(MXS_MONITOR_INSTANCE *mon, const MXS_CONFIG_PARAMETER *params)
{
return GRMon::create_and_start(mon, params);
return static_cast<GRMon*>(mon)->start(params);
}
/**
@ -158,9 +140,7 @@ startMonitor(MXS_MONITOR *mon, const MXS_CONFIG_PARAMETER *params)
static void
stopMonitor(MXS_MONITOR_INSTANCE *mon)
{
GRMon *handle = static_cast<GRMon*>(mon);
handle->stop();
delete handle;
static_cast<GRMon*>(mon)->stop();
}
/**