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A weak reference implementation. Not part of default build.

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This commit is contained in:
pedemont@us.ibm.com
2004-09-15 21:50:41 +00:00
parent f8195d0e99
commit e5ce0882c5
6 changed files with 227 additions and 72 deletions
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53
extensions/java/xpcom/nsJavaWrapper.cpp
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@@ -320,19 +320,22 @@ SetupParams(JNIEnv *env, const jobject aParam,
// Check if we already have a corresponding XPCOM object
void* inst = GetMatchingXPCOMObject(env, data);
if (inst == nsnull) {
// Get IID for this param
nsID iid;
rv = GetIIDForMethodParam(aIInfo, aMethodInfo, aParamInfo,
aMethodIndex, aDispatchParams, PR_TRUE,
iid);
if (NS_FAILED(rv))
return rv;
PRBool isWeakRef = iid.Equals(NS_GET_IID(nsIWeakReference));
if (inst == nsnull && !isWeakRef) {
// If there is not corresponding XPCOM object, then that means that the
// parameter is non-generated class (that is, it is not one of our
// Java stubs that represent an exising XPCOM object). So we need to
// create an XPCOM stub, that can route any method calls to the class.
// Get IID for this param
nsID iid;
rv = GetIIDForMethodParam(aIInfo, aMethodInfo, aParamInfo,
aMethodIndex, aDispatchParams, PR_TRUE, iid);
if (NS_FAILED(rv))
return rv;
// Get interface info for class
nsCOMPtr<nsIInterfaceInfoManager> iim = XPTI_GetInterfaceInfoManager();
nsCOMPtr<nsIInterfaceInfo> iinfo;
@@ -343,34 +346,14 @@ SetupParams(JNIEnv *env, const jobject aParam,
inst = SetAsXPTCStub(xpcomStub);
AddJavaXPCOMBinding(env, data, inst);
}
#if 1
// XXX This code is here to make sure that the nsJavaXPTCStub that is
// used has the correct (asked for) interface info. For example, in
// the Java code, the nsIWeakReference functions return the current
// Java object ('this'); so when we call GetMatchingXPCOMObject on
// that Java object, we get back a nsJavaXPTCStub that has the interface
// info for something other than nsIWeakReference. This will cause
// problems later when we try to call one of the nsIWeakReference
// functions on that Java object, but the nsJavaXPTCStub object doesn't
// know anything about nsIWeakReference.
else {
if (IsXPTCStub(inst)) {
// Get IID for this param
nsID iid;
rv = GetIIDForMethodParam(aIInfo, aMethodInfo, aParamInfo,
aMethodIndex, aDispatchParams, PR_TRUE, iid);
if (NS_FAILED(rv))
return rv;
void* temp;
rv = GetXPTCStubAddr(inst)->QueryInterface(iid, &temp);
if (NS_SUCCEEDED(rv) && temp != GetXPTCStubAddr(inst))
inst = SetAsXPTCStub((nsJavaXPTCStub*) temp);
}
}
#endif
if (IsXPTCStub(inst)) {
if (isWeakRef) {
// If the function expects an weak reference, then we need to
// create it here.
nsJavaXPTCStubWeakRef* weakref = new nsJavaXPTCStubWeakRef(env, data);
NS_ADDREF(weakref);
aVariant.val.p = aVariant.ptr = (void*) weakref;
} else if (IsXPTCStub(inst)) {
nsJavaXPTCStub* xpcomStub = GetXPTCStubAddr(inst);
NS_ADDREF(xpcomStub);
aVariant.val.p = aVariant.ptr = (void*) xpcomStub;