YOU must make your project thread-safe...

#include <pmonitor.h>

#include <PhHistogramFactory.hh>

PhHistogramFactory *hf;

PhH1 *h1;

int init_done = 0;

int pinit()

{

if (init_done) return 1;

init_done = 1;

hf = PhHistogramFactory::instance();

if (hf)

{

h1 = hf->CreateH1F("H1", "Channel 0", 101,-49.5,49.5);

return 0;

}

else return -1;

}

void h1delete()

{

if (!h1) return;

delete h1;

h1=0;

}

void h1create()

{

if (h1) return;

h1 = hf->CreateH1F("H1", "Channel 0", 101,-49.5,49.5);

}

Obviously, that’s not thread-safe. You have to put locks in place (and slow us down) or force the processing to be stopped before the routines are called.

int process_event (Event * e)

{

// static int i = 0;

Packet *p = e->getPacket(1003);

if (p)

{

if (h1) h1->Fill (p->iValue(0));

delete p;

}

return 0;

}

Would that work? Always? :-)

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