sp<IBinder> ProcessState::getContextObject(const String16& name, const sp<IBinder>& caller)
{
mLock.lock();
sp<IBinder> object(
mContexts.indexOfKey(name) >= 0 ? mContexts.valueFor(name) : NULL);
mLock.unlock();
//printf("Getting context object %s for %p\n", String8(name).string(), caller.get());
if (object != NULL) return object;
// Don't attempt to retrieve contexts if we manage them
if (mManagesContexts) {
ALOGE("getContextObject(%s) failed, but we manage the contexts!\n",
String8(name).string());
return NULL;
}
IPCThreadState* ipc = IPCThreadState::self();
{
Parcel data, reply;
// no interface token on this magic transaction
data.writeString16(name);
data.writeStrongBinder(caller);
status_t result = ipc->transact(0 /*magic*/, 0, data, &reply, 0);
if (result == NO_ERROR) {
object = reply.readStrongBinder();
}
}
ipc->flushCommands();
if (object != NULL) setContextObject(object, name);
return object;
}
status_t BpBinder::unlinkToDeath(
const wp<DeathRecipient>& recipient, void* cookie, uint32_t flags,
wp<DeathRecipient>* outRecipient)
{
AutoMutex _l(mLock);
if (mObitsSent) {
return DEAD_OBJECT;
}
const size_t N = mObituaries ? mObituaries->size() : 0;
for (size_t i=0; i<N; i++) {
const Obituary& obit = mObituaries->itemAt(i);
if ((obit.recipient == recipient
|| (recipient == NULL && obit.cookie == cookie))
&& obit.flags == flags) {
const uint32_t allFlags = obit.flags|flags;
if (outRecipient != NULL) {
*outRecipient = mObituaries->itemAt(i).recipient;
}
mObituaries->removeAt(i);
if (mObituaries->size() == 0) {
ALOGV("Clearing death notification: %p handle %d\n", this, mHandle);
IPCThreadState* self = IPCThreadState::self();
self->clearDeathNotification(mHandle, this);
self->flushCommands();
delete mObituaries;
mObituaries = NULL;
}
return NO_ERROR;
}
}
return NAME_NOT_FOUND;
}
void BpBinder::sendObituary()
{
ALOGV("Sending obituary for proxy %p handle %d, mObitsSent=%s\n",
this, mHandle, mObitsSent ? "true" : "false");
mAlive = 0;
if (mObitsSent) return;
mLock.lock();
Vector<Obituary>* obits = mObituaries;
if(obits != NULL) {
ALOGV("Clearing sent death notification: %p handle %d\n", this, mHandle);
IPCThreadState* self = IPCThreadState::self();
self->clearDeathNotification(mHandle, this);
self->flushCommands();
mObituaries = NULL;
}
mObitsSent = 1;
mLock.unlock();
ALOGV("Reporting death of proxy %p for %d recipients\n",
this, obits ? obits->size() : 0);
if (obits != NULL) {
const size_t N = obits->size();
for (size_t i=0; i<N; i++) {
reportOneDeath(obits->itemAt(i));
}
delete obits;
}
}
status_t BpBinder::linkToDeath(
const sp<DeathRecipient>& recipient, void* cookie, uint32_t flags)
{
Obituary ob;
ob.recipient = recipient;
ob.cookie = cookie;
ob.flags = flags;
LOG_ALWAYS_FATAL_IF(recipient == NULL,
"linkToDeath(): recipient must be non-NULL");
{
AutoMutex _l(mLock);
if (!mObitsSent) {
if (!mObituaries) {
mObituaries = new Vector<Obituary>;
if (!mObituaries) {
return NO_MEMORY;
}
ALOGV("Requesting death notification: %p handle %d\n", this, mHandle);
getWeakRefs()->incWeak(this);
IPCThreadState* self = IPCThreadState::self();
self->requestDeathNotification(mHandle, this);
self->flushCommands();
}
ssize_t res = mObituaries->add(ob);
return res >= (ssize_t)NO_ERROR ? (status_t)NO_ERROR : res;
}
}
return DEAD_OBJECT;
}