Adding DCHECKs and constness to DtlsIdentityStore.
R=hbos@webrtc.org, hbos
BUG=
Review URL: https://codereview.webrtc.org/1171893003.
Cr-Commit-Position: refs/heads/master@{#9402}
diff --git a/talk/app/webrtc/dtlsidentitystore.cc b/talk/app/webrtc/dtlsidentitystore.cc
index dd9bc5d..abd35e1 100644
--- a/talk/app/webrtc/dtlsidentitystore.cc
+++ b/talk/app/webrtc/dtlsidentitystore.cc
@@ -57,13 +57,14 @@
explicit WorkerTask(DtlsIdentityStore* store)
: signaling_thread_(rtc::Thread::Current()), store_(store) {
store_->SignalDestroyed.connect(this, &WorkerTask::OnStoreDestroyed);
- };
+ }
virtual ~WorkerTask() { DCHECK(rtc::Thread::Current() == signaling_thread_); }
- void GenerateIdentity() {
+ private:
+ void GenerateIdentity_w() {
rtc::scoped_ptr<rtc::SSLIdentity> identity(
- rtc::SSLIdentity::Generate(DtlsIdentityStore::kIdentityName));
+ rtc::SSLIdentity::Generate(DtlsIdentityStore::kIdentityName));
{
rtc::CritScope cs(&cs_);
@@ -76,27 +77,29 @@
void OnMessage(rtc::Message* msg) override {
switch (msg->message_id) {
case MSG_GENERATE_IDENTITY:
- GenerateIdentity();
+ // This message always runs on the worker thread.
+ GenerateIdentity_w();
// Must delete |this|, owned by msg->pdata, on the signaling thread to
// avoid races on disconnecting the signal.
signaling_thread_->Post(this, MSG_DESTROY, msg->pdata);
break;
case MSG_DESTROY:
+ DCHECK(rtc::Thread::Current() == signaling_thread_);
delete msg->pdata;
+ // |this| has now been deleted. Don't touch member variables.
break;
default:
CHECK(false) << "Unexpected message type";
}
}
- private:
void OnStoreDestroyed() {
rtc::CritScope cs(&cs_);
store_ = NULL;
}
- rtc::Thread* signaling_thread_;
+ rtc::Thread* const signaling_thread_;
rtc::CriticalSection cs_;
DtlsIdentityStore* store_;
};
@@ -116,6 +119,7 @@
}
void DtlsIdentityStore::Initialize() {
+ DCHECK(rtc::Thread::Current() == signaling_thread_);
// Do not aggressively generate the free identity if the worker thread and the
// signaling thread are the same.
if (worker_thread_ != signaling_thread_) {
@@ -139,6 +143,7 @@
}
void DtlsIdentityStore::OnMessage(rtc::Message* msg) {
+ DCHECK(rtc::Thread::Current() == signaling_thread_);
switch (msg->message_id) {
case MSG_GENERATE_IDENTITY_RESULT: {
rtc::scoped_ptr<IdentityResultMessageData> pdata(
@@ -156,10 +161,12 @@
}
bool DtlsIdentityStore::HasFreeIdentityForTesting() const {
- return free_identity_.get();
+ DCHECK(rtc::Thread::Current() == signaling_thread_);
+ return free_identity_.get() != nullptr;
}
void DtlsIdentityStore::GenerateIdentity() {
+ DCHECK(rtc::Thread::Current() == signaling_thread_);
pending_jobs_++;
LOG(LS_VERBOSE) << "New DTLS identity generation is posted, "
<< "pending_identities=" << pending_jobs_;
@@ -191,6 +198,7 @@
void DtlsIdentityStore::ReturnIdentity(
rtc::scoped_ptr<rtc::SSLIdentity> identity) {
+ DCHECK(rtc::Thread::Current() == signaling_thread_);
DCHECK(!free_identity_.get());
DCHECK(!pending_observers_.empty());
@@ -211,8 +219,8 @@
if (worker_thread_ != signaling_thread_ &&
pending_observers_.empty() &&
pending_jobs_ == 0) {
- // Generate a free identity in the background.
- GenerateIdentity();
+ // Generate a free identity in the background.
+ GenerateIdentity();
}
}
diff --git a/talk/app/webrtc/dtlsidentitystore.h b/talk/app/webrtc/dtlsidentitystore.h
index 1ceaa82..b2a7974 100644
--- a/talk/app/webrtc/dtlsidentitystore.h
+++ b/talk/app/webrtc/dtlsidentitystore.h
@@ -79,8 +79,8 @@
void PostGenerateIdentityResult_w(rtc::scoped_ptr<rtc::SSLIdentity> identity);
- rtc::Thread* signaling_thread_;
- rtc::Thread* worker_thread_;
+ rtc::Thread* const signaling_thread_;
+ rtc::Thread* const worker_thread_;
// These members should be accessed on the signaling thread only.
int pending_jobs_;