Merge changes I9b5b2876,I3b93e0a9
* changes:
libbinder: RPC fixup retry logic
libbinder: vsock compiles on host
diff --git a/libs/binder/RpcServer.cpp b/libs/binder/RpcServer.cpp
index cc77c27..a6850ff 100644
--- a/libs/binder/RpcServer.cpp
+++ b/libs/binder/RpcServer.cpp
@@ -125,8 +125,8 @@
}
while (true) {
- unique_fd clientFd(
- TEMP_FAILURE_RETRY(accept4(mServer.get(), nullptr, 0 /*length*/, SOCK_CLOEXEC)));
+ unique_fd clientFd(TEMP_FAILURE_RETRY(
+ accept4(mServer.get(), nullptr, nullptr /*length*/, SOCK_CLOEXEC)));
if (clientFd < 0) {
ALOGE("Could not accept4 socket: %s", strerror(errno));
diff --git a/libs/binder/RpcSession.cpp b/libs/binder/RpcSession.cpp
index cb6c787..0471705 100644
--- a/libs/binder/RpcSession.cpp
+++ b/libs/binder/RpcSession.cpp
@@ -49,7 +49,7 @@
LOG_RPC_DETAIL("RpcSession destroyed %p", this);
std::lock_guard<std::mutex> _l(mMutex);
- LOG_ALWAYS_FATAL_IF(mServers.size() != 0,
+ LOG_ALWAYS_FATAL_IF(mServerConnections.size() != 0,
"Should not be able to destroy a session with servers in use.");
}
@@ -190,9 +190,9 @@
bool RpcSession::setupSocketClient(const RpcSocketAddress& addr) {
{
std::lock_guard<std::mutex> _l(mMutex);
- LOG_ALWAYS_FATAL_IF(mClients.size() != 0,
+ LOG_ALWAYS_FATAL_IF(mClientConnections.size() != 0,
"Must only setup session once, but already has %zu clients",
- mClients.size());
+ mClientConnections.size());
}
if (!setupOneSocketClient(addr, RPC_SESSION_ID_NEW)) return false;
@@ -267,7 +267,7 @@
std::lock_guard<std::mutex> _l(mMutex);
sp<RpcConnection> session = sp<RpcConnection>::make();
session->fd = std::move(fd);
- mClients.push_back(session);
+ mClientConnections.push_back(session);
}
void RpcSession::setForServer(const wp<RpcServer>& server, int32_t sessionId) {
@@ -280,16 +280,17 @@
sp<RpcConnection> session = sp<RpcConnection>::make();
session->fd = std::move(fd);
session->exclusiveTid = gettid();
- mServers.push_back(session);
+ mServerConnections.push_back(session);
return session;
}
bool RpcSession::removeServerConnection(const sp<RpcConnection>& connection) {
std::lock_guard<std::mutex> _l(mMutex);
- if (auto it = std::find(mServers.begin(), mServers.end(), connection); it != mServers.end()) {
- mServers.erase(it);
- if (mServers.size() == 0) {
+ if (auto it = std::find(mServerConnections.begin(), mServerConnections.end(), connection);
+ it != mServerConnections.end()) {
+ mServerConnections.erase(it);
+ if (mServerConnections.size() == 0) {
terminateLocked();
}
return true;
@@ -311,10 +312,11 @@
// CHECK FOR DEDICATED CLIENT SOCKET
//
// A server/looper should always use a dedicated session if available
- findConnection(tid, &exclusive, &available, mSession->mClients, mSession->mClientsOffset);
+ findConnection(tid, &exclusive, &available, mSession->mClientConnections,
+ mSession->mClientConnectionsOffset);
// WARNING: this assumes a server cannot request its client to send
- // a transaction, as mServers is excluded below.
+ // a transaction, as mServerConnections is excluded below.
//
// Imagine we have more than one thread in play, and a single thread
// sends a synchronous, then an asynchronous command. Imagine the
@@ -324,7 +326,8 @@
// command. So, we move to considering the second available thread
// for subsequent calls.
if (use == ConnectionUse::CLIENT_ASYNC && (exclusive != nullptr || available != nullptr)) {
- mSession->mClientsOffset = (mSession->mClientsOffset + 1) % mSession->mClients.size();
+ mSession->mClientConnectionsOffset =
+ (mSession->mClientConnectionsOffset + 1) % mSession->mClientConnections.size();
}
// USE SERVING SOCKET (for nested transaction)
@@ -332,7 +335,7 @@
// asynchronous calls cannot be nested
if (use != ConnectionUse::CLIENT_ASYNC) {
// server connections are always assigned to a thread
- findConnection(tid, &exclusive, nullptr /*available*/, mSession->mServers,
+ findConnection(tid, &exclusive, nullptr /*available*/, mSession->mServerConnections,
0 /* index hint */);
}
@@ -348,13 +351,13 @@
}
// in regular binder, this would usually be a deadlock :)
- LOG_ALWAYS_FATAL_IF(mSession->mClients.size() == 0,
+ LOG_ALWAYS_FATAL_IF(mSession->mClientConnections.size() == 0,
"Not a client of any session. You must create a session to an "
"RPC server to make any non-nested (e.g. oneway or on another thread) "
"calls.");
LOG_RPC_DETAIL("No available session (have %zu clients and %zu servers). Waiting...",
- mSession->mClients.size(), mSession->mServers.size());
+ mSession->mClientConnections.size(), mSession->mServerConnections.size());
mSession->mAvailableConnectionCv.wait(_l);
}
mSession->mWaitingThreads--;
diff --git a/libs/binder/include/binder/RpcSession.h b/libs/binder/include/binder/RpcSession.h
index 2b545c4..0b77787 100644
--- a/libs/binder/include/binder/RpcSession.h
+++ b/libs/binder/include/binder/RpcSession.h
@@ -161,13 +161,13 @@
bool mReentrant = false;
};
- // On the other side of a session, for each of mClients here, there should
- // be one of mServers on the other side (and vice versa).
+ // On the other side of a session, for each of mClientConnections here, there should
+ // be one of mServerConnections on the other side (and vice versa).
//
// For the simplest session, a single server with one client, you would
// have:
- // - the server has a single 'mServers' and a thread listening on this
- // - the client has a single 'mClients' and makes calls to this
+ // - the server has a single 'mServerConnections' and a thread listening on this
+ // - the client has a single 'mClientConnections' and makes calls to this
// - here, when the client makes a call, the server can call back into it
// (nested calls), but outside of this, the client will only ever read
// calls from the server when it makes a call itself.
@@ -186,14 +186,15 @@
std::condition_variable mAvailableConnectionCv; // for mWaitingThreads
size_t mWaitingThreads = 0;
- size_t mClientsOffset = 0; // hint index into clients, ++ when sending an async transaction
- std::vector<sp<RpcConnection>> mClients;
- std::vector<sp<RpcConnection>> mServers;
+ // hint index into clients, ++ when sending an async transaction
+ size_t mClientConnectionsOffset = 0;
+ std::vector<sp<RpcConnection>> mClientConnections;
+ std::vector<sp<RpcConnection>> mServerConnections;
// TODO(b/185167543): use for reverse sessions (allow client to also
// serve calls on a session).
// TODO(b/185167543): allow sharing between different sessions in a
- // process? (or combine with mServers)
+ // process? (or combine with mServerConnections)
std::map<std::thread::id, std::thread> mThreads;
bool mTerminated = false;
};