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Check if entry is valid when removing. Not part of default build.

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This commit is contained in:
pedemont%us.ibm.com 2004-10-07 18:35:43 +00:00
parent c52fe66842
commit 80d3ab5ea9
1 changed files with 29 additions and 17 deletions
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46
extensions/java/xpcom/nsJavaXPCOMBindingUtils.cpp
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@ -170,45 +170,57 @@ AddJavaXPCOMBinding(JNIEnv* env, jobject aJavaObject, void* aXPCOMObject)
PL_DHASH_ADD));
entry->mJavaObject = java_ref;
LOG("+ Adding Java<->XPCOM binding (Java=0x%08x] | XPCOM=0x%08x)\n",
(PRUint32) java_ref, (int) aXPCOMObject);
LOG("+ Adding Java<->XPCOM binding (Java=0x%08x | XPCOM=0x%08x) weakref=0x%08x\n",
hash, (int) aXPCOMObject, (PRUint32) java_ref);
}
void
RemoveJavaXPCOMBinding(JNIEnv* env, jobject aJavaObject, void* aXPCOMObject)
{
JavaXPCOMBindingEntry* entry;
// We either get a Java or an XPCOM object. So find the other object.
jint hash = 0;
JavaXPCOMBindingEntry* entry = nsnull;
if (aJavaObject) {
hash = env->CallIntMethod(aJavaObject, hashCodeMID);
entry =
JavaXPCOMBindingEntry* e =
NS_STATIC_CAST(JavaXPCOMBindingEntry*,
PL_DHashTableOperate(gJAVAtoXPCOMBindings,
NS_INT32_TO_PTR(hash),
PL_DHASH_LOOKUP));
if (PL_DHASH_ENTRY_IS_BUSY(e))
entry = e;
} else {
entry =
JavaXPCOMBindingEntry* e =
NS_STATIC_CAST(JavaXPCOMBindingEntry*,
PL_DHashTableOperate(gXPCOMtoJAVABindings, aXPCOMObject,
PL_DHASH_LOOKUP));
if (PL_DHASH_ENTRY_IS_BUSY(e))
entry = e;
}
NS_ASSERTION(entry != nsnull, "Failed to find matching entry");
jobject jweakref = entry->mJavaObject;
void* xpcom_obj = entry->mXPCOMInstance;
if (hash == 0)
hash = env->CallIntMethod(jweakref, hashCodeMID);
if (entry) {
jobject jweakref = entry->mJavaObject;
void* xpcom_obj = entry->mXPCOMInstance;
if (hash == 0)
hash = env->CallIntMethod(jweakref, hashCodeMID);
// Remove both instances from stores
PL_DHashTableOperate(gJAVAtoXPCOMBindings, NS_INT32_TO_PTR(hash),
PL_DHASH_REMOVE);
PL_DHashTableOperate(gXPCOMtoJAVABindings, xpcom_obj, PL_DHASH_REMOVE);
NS_ASSERTION(env->IsSameObject(jweakref, aJavaObject),
"Weakref does not point to expected Java object");
NS_ASSERTION(!env->IsSameObject(jweakref, NULL),
"Weakref refers to garbage collected Java object. No longer valid");
LOG("- Removing Java<->XPCOM binding (Java=0x%08x | XPCOM=0x%08x)\n",
hash, (int) xpcom_obj);
// Remove both instances from stores
PL_DHashTableOperate(gJAVAtoXPCOMBindings, NS_INT32_TO_PTR(hash),
PL_DHASH_REMOVE);
PL_DHashTableOperate(gXPCOMtoJAVABindings, xpcom_obj, PL_DHASH_REMOVE);
env->DeleteWeakGlobalRef(NS_STATIC_CAST(jweak, jweakref));
LOG("- Removing Java<->XPCOM binding (Java=0x%08x | XPCOM=0x%08x) weakref=0x%08x\n",
hash, (int) xpcom_obj, (PRUint32) jweakref);
env->DeleteWeakGlobalRef(NS_STATIC_CAST(jweak, jweakref));
}
}
void*