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Commit 007b4fa6 authored by Frederick Mayle's avatar Frederick Mayle Committed by Automerger Merge Worker
Browse files

Merge "libbinder: Don't alloc for RPC_COMMAND_DEC_STRONG" am: 8f52763d am: 7f2538de 

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2122054



Change-Id: If21ccffda69464acefc8bce2365ceae73e992136
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents bcacbdb9 7f2538de

libs/binder/RpcState.cpp

+10 −14
Original line number Diff line number Diff line
@@ -964,23 +964,19 @@ status_t RpcState::processDecStrong(const sp<RpcSession::RpcConnection>& connect 
                                    const sp<RpcSession>& session, const RpcWireHeader& command) {

    LOG_ALWAYS_FATAL_IF(command.command != RPC_COMMAND_DEC_STRONG, "command: %d", command.command);



    CommandData commandData(command.bodySize);

    if (!commandData.valid()) {

        return NO_MEMORY;

    }

    iovec iov{commandData.data(), commandData.size()};

    if (status_t status = rpcRec(connection, session, "dec ref body", &iov, 1); status != OK)

        return status;



    if (command.bodySize != sizeof(RpcDecStrong)) {

        ALOGE("Expecting %zu but got %" PRId32 " bytes for RpcDecStrong. Terminating!",

              sizeof(RpcDecStrong), command.bodySize);

        (void)session->shutdownAndWait(false);

        return BAD_VALUE;

    }

    RpcDecStrong* body = reinterpret_cast<RpcDecStrong*>(commandData.data());



    uint64_t addr = RpcWireAddress::toRaw(body->address);

    RpcDecStrong body;

    iovec iov{&body, sizeof(RpcDecStrong)};

    if (status_t status = rpcRec(connection, session, "dec ref body", &iov, 1); status != OK)

        return status;



    uint64_t addr = RpcWireAddress::toRaw(body.address);

    std::unique_lock<std::mutex> _l(mNodeMutex);

    auto it = mNodeForAddress.find(addr);

    if (it == mNodeForAddress.end()) {
@@ -998,19 +994,19 @@ status_t RpcState::processDecStrong(const sp<RpcSession::RpcConnection>& connect 
        return BAD_VALUE;

    }



    if (it->second.timesSent < body->amount) {

    if (it->second.timesSent < body.amount) {

        ALOGE("Record of sending binder %zu times, but requested decStrong for %" PRIu64 " of %u",

              it->second.timesSent, addr, body->amount);

              it->second.timesSent, addr, body.amount);

        return OK;

    }



    LOG_ALWAYS_FATAL_IF(it->second.sentRef == nullptr, "Inconsistent state, lost ref for %" PRIu64,

                        addr);



    LOG_RPC_DETAIL("Processing dec strong of %" PRIu64 " by %u from %zu", addr, body->amount,

    LOG_RPC_DETAIL("Processing dec strong of %" PRIu64 " by %u from %zu", addr, body.amount,

                   it->second.timesSent);



    it->second.timesSent -= body->amount;

    it->second.timesSent -= body.amount;

    sp<IBinder> tempHold = tryEraseNode(it);

    _l.unlock();

    tempHold = nullptr; // destructor may make binder calls on this session

libs/binder/tests/binderAllocationLimits.cpp

+2 −2
Original line number Diff line number Diff line
@@ -210,8 +210,8 @@ TEST(RpcBinderAllocation, SetupRpcServer) { 
        });

        CHECK_EQ(OK, remoteBinder->pingBinder());

    }

    EXPECT_EQ(mallocs, 2);

    EXPECT_EQ(totalBytes, 56);

    EXPECT_EQ(mallocs, 1);

    EXPECT_EQ(totalBytes, 40);

}



int main(int argc, char** argv) {