【转帖】multithreaded achievement of sw api
 

multithreaded achievement of sw api
hi!
i have a quad core computer. if i use the conventional sw connetion method, only 1 processor working.
i would like to push the advantage of the four processors, and i like to cut my job for 4 thread, after the threads run in paralel...)
i like create more instance of sw api, afterwards these the instance to separate threads to order.
it is possible? (i use c++ and com)
hresult hcomres = coinitializeex(null, coinit_multithreaded);
if (hcomres != s_ok)
{
cout << "error under initializing com. exiting..." << endl;
return 1;
}
ccomptr swapp;
ccomptr swapp2;
hresult hres1 = swapp.cocreateinstance(__uuidof(sldworks), null, clsctx_local_server);
hresult hres2 = swapp2.cocreateinstance(__uuidof(sldworks), null, clsctx_local_server);
this code is bad, bacause the pointers swapp and swapp2 is equal.
thanks!
regards:
zszs.
you need to start a new instance of sw, get its pid (process id), then call
i say thank you for your answer, i will try it.
did i understand well?
the 1. initialize the com port ( coinitializeex(null, coinit_multithreaded) ) ,
the 2. i create 4 threads,
the 3. in all threads a sw i create an object instance ( swapp.cocreateinstance(__uuidof(sldworks), null, clsctx_local_server) ) ,
the 4. i call for all threads the setthreadaffinitymask() function.
regards:
zszs.
thats basically it yes. it is a theory i have thought of and presume will work but have not tested anything so let me know your results.
is disappearing in that manner works!
i opened it only temporarily and i closed it two different documentumot on the two threads.
my sample-code:
--------------------
#include "sldworks_api_session.h"
#include "thread.h"
#include "util.h"
using namespace std;
struct parthread
{
ccomptr{isldworks} swapp;
string docname;
};
std::vector{parthread} vecthreadparams;
dword winapi workproc(lpvoid pparam);
int _tmain(int argc, _tchar* argv[])
{
hresult hres = coinitializeex(null, coinit_multithreaded);
if (hres != s_ok)
{
cout << "error under initializing com. exiting..." << endl;
return 1;
}
int par1 = 0, par2 = 1;
parthread pt1, pt2;
pt1.docname = "d:\\x\\labe00_01001\\labe00_01001.sldasm";
pt2.docname = "d:\\x\\labj00_01001\\labj00_01001.sldasm";
vecthreadparams.push_back(pt1);
vecthreadparams.push_back(pt2);
thread* thr1 = new thread(workproc, &par1);
thread* thr2 = new thread(workproc, &par2);
thr1->resume();
thr2->resume();
while( (thr1->getexitcode() == still_active) || (thr2->getexitcode() == still_active) );
delete thr1;
delete thr2;
for(int i=0; i<=vecthreadparams.size()-1; i++)
vecthreadparams.swapp = null;
couninitialize();
return 0;
}
dword winapi workproc(lpvoid pparam)
{
int* paridx = (int*) pparam;
hresult hres = vecthreadparams[*paridx].swapp.cocreateinstance(__uuidof(sldworks), null, clsctx_local_server);
isldworks* papp = vecthreadparams[*paridx].swapp;
string docname = vecthreadparams[*paridx].docname;
ccomptr{imodeldoc2} swdoc;
string outmsg;
long er, wa;
hres = papp->opendoc6(util::str2bstr(docname), swdocassembly, swopendocoptions_silent, _bstr_t(""), &er, &wa, &swdoc);
if( (hres == s_ok) && (swdoc) )
{
outmsg = "thread:" + util::i2s(*paridx) + " opened.";
hres = papp->closedoc(util::str2bstr(docname));
}
else
outmsg = "thread:" + util::i2s(*paridx) + " error.";
cout << outmsg << endl;
swdoc = null;
return 0;
}
-----------------
comments:
1. the system took the words written between the pointed brackets out unfortunately! (pointed brackets template classes we are useful the c in c++) i changed the {} pairs instead of pointed brackets.
2. the "util" and "thread" classes they are my classes.
3. i don't use the setthreadaffinitymask() function. the system put the threads difference processor in default.
i say thank you for your idea!
regards:
zszs.
edited: 10/29/2008 at 04:14 am by zsolt zsupán
glad it worked, others should find this very useful for processor intensive tasks where time is critical