This could be a PHP or COM question... not sure.
I am calling a custom COM object from php. I am seeing a memory leak happen
when I build my variant in C++ and then return it out to the PHP calling
into the COM.
I am using the following piece of code to take a simple C++ array of strings
and load it into a Variant:
void ComUtils::CreateCOMStrArray(VARIANT* pOut, BSTR* bsArray, int iLen)
{
SAFEARRAYBOUND bounds = { iLen , 0 } ;
SAFEARRAY* pSA = SafeArrayCreate (VT_VARIANT , 1 ,
&bounds);
VARIANT* pVarArray;
// lock the array
SafeArrayAccessData(pSA , (void **)&pVarArray);
// put all strings into variants
for (int i=0;i<iLen;i++) {
VARIANT vTmp;
VariantInit(&vTmp);
vTmp.vt = VT_BSTR;
vTmp.bstrVal = bsArray[i]; // DANGER DANGER DANGER!!!!
VariantCopy(&pVarArray[i], &vTmp);
vTmp.bstrVal = NULL; vTmp.vt = VT_EMPTY; // give up string ownership
VariantClear(&vTmp);
}
// unlock the array
SafeArrayUnaccessData(pSA);
VariantInit(pOut);
V_VT(pOut) = VT_ARRAY | VT_VARIANT;
// put the array in the output variant
V_ARRAY(pOut) = pSA;
}
Unfortunately, I don't have any COM books, and the VC++ help files don't
seem to have what I am looking for (or at least I am looking in the wrong
spot).
Its pretty obvious to me that the assignment, "vTmp.bstrVal = bsArray[i];"
is not the way I shoudl be doing this. PHP doesn't seem to know to free
this memory since it was alloc'd outside its realm.
So... Is there a PHP fix for this, or is this a COM thing? If it is COM, (I
know this is not a COM list) could someone point me in the right direction
there?
Thanks.
// Mike Eynon
// www.MikeEynon.com
// 1366 Bulb Ave.
// Santa Cruz, CA 95062
// [EMAIL PROTECTED]
// 831.588.2388
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