This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGc468635b7dfc: [clangd] Speed up a slow sleeping testcase.
(authored by sammccall).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D125103/new/
https://reviews.llvm.org/D125103
Files:
clang-tools-extra/clangd/support/Threading.cpp
clang-tools-extra/clangd/support/Threading.h
clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
Index: clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
===================================================================
--- clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
+++ clang-tools-extra/clangd/unittests/TUSchedulerTests.cpp
@@ -247,28 +247,31 @@
}
TEST_F(TUSchedulerTests, Debounce) {
- std::atomic<int> CallbackCount(0);
- {
- auto Opts = optsForTest();
- Opts.UpdateDebounce = DebouncePolicy::fixed(std::chrono::seconds(1));
- TUScheduler S(CDB, Opts, captureDiags());
- // FIXME: we could probably use timeouts lower than 1 second here.
- auto Path = testPath("foo.cpp");
- updateWithDiags(S, Path, "auto (debounced)", WantDiagnostics::Auto,
- [&](std::vector<Diag>) {
- ADD_FAILURE()
- << "auto should have been debounced and canceled";
- });
- std::this_thread::sleep_for(std::chrono::milliseconds(200));
- updateWithDiags(S, Path, "auto (timed out)", WantDiagnostics::Auto,
- [&](std::vector<Diag>) { ++CallbackCount; });
- std::this_thread::sleep_for(std::chrono::seconds(2));
- updateWithDiags(S, Path, "auto (shut down)", WantDiagnostics::Auto,
- [&](std::vector<Diag>) { ++CallbackCount; });
-
- ASSERT_TRUE(S.blockUntilIdle(timeoutSeconds(10)));
- }
- EXPECT_EQ(2, CallbackCount);
+ auto Opts = optsForTest();
+ Opts.UpdateDebounce = DebouncePolicy::fixed(std::chrono::milliseconds(500));
+ TUScheduler S(CDB, Opts, captureDiags());
+ auto Path = testPath("foo.cpp");
+ // Issue a write that's going to be debounced away.
+ updateWithDiags(S, Path, "auto (debounced)", WantDiagnostics::Auto,
+ [&](std::vector<Diag>) {
+ ADD_FAILURE()
+ << "auto should have been debounced and canceled";
+ });
+ // Sleep a bit to verify that it's really debounce that's holding diagnostics.
+ std::this_thread::sleep_for(std::chrono::milliseconds(50));
+
+ // Issue another write, this time we'll wait for its diagnostics.
+ Notification N;
+ updateWithDiags(S, Path, "auto (timed out)", WantDiagnostics::Auto,
+ [&](std::vector<Diag>) { N.notify(); });
+ EXPECT_TRUE(N.wait(timeoutSeconds(1)));
+
+ // Once we start shutting down the TUScheduler, this one becomes a dead write.
+ updateWithDiags(S, Path, "auto (discarded)", WantDiagnostics::Auto,
+ [&](std::vector<Diag>) {
+ ADD_FAILURE()
+ << "auto should have been discarded (dead write)";
+ });
}
TEST_F(TUSchedulerTests, Cancellation) {
Index: clang-tools-extra/clangd/support/Threading.h
===================================================================
--- clang-tools-extra/clangd/support/Threading.h
+++ clang-tools-extra/clangd/support/Threading.h
@@ -24,20 +24,6 @@
namespace clang {
namespace clangd {
-/// A threadsafe flag that is initially clear.
-class Notification {
-public:
- // Sets the flag. No-op if already set.
- void notify();
- // Blocks until flag is set.
- void wait() const;
-
-private:
- bool Notified = false;
- mutable std::condition_variable CV;
- mutable std::mutex Mu;
-};
-
/// Limits the number of threads that can acquire the lock at the same time.
class Semaphore {
public:
@@ -100,6 +86,21 @@
return true;
}
+/// A threadsafe flag that is initially clear.
+class Notification {
+public:
+ // Sets the flag. No-op if already set.
+ void notify();
+ // Blocks until flag is set.
+ void wait() const { (void)wait(Deadline::infinity()); }
+ LLVM_NODISCARD bool wait(Deadline D) const;
+
+private:
+ bool Notified = false;
+ mutable std::condition_variable CV;
+ mutable std::mutex Mu;
+};
+
/// Runs tasks on separate (detached) threads and wait for all tasks to finish.
/// Objects that need to spawn threads can own an AsyncTaskRunner to ensure they
/// all complete on destruction.
Index: clang-tools-extra/clangd/support/Threading.cpp
===================================================================
--- clang-tools-extra/clangd/support/Threading.cpp
+++ clang-tools-extra/clangd/support/Threading.cpp
@@ -34,9 +34,9 @@
}
}
-void Notification::wait() const {
+bool Notification::wait(Deadline D) const {
std::unique_lock<std::mutex> Lock(Mu);
- CV.wait(Lock, [this] { return Notified; });
+ return clangd::wait(Lock, CV, D, [&] { return Notified; });
}
Semaphore::Semaphore(std::size_t MaxLocks) : FreeSlots(MaxLocks) {}
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