3party/googletest
0
0
Fork 0
mirror of https://github.com/google/googletest.git synced 2024-12-27 10:11:03 +08:00
Code Issues Projects Releases Wiki Activity

Fix FunctionMocker compilation slowdown in 9d21db9e0a60a1ea61ec19331c9bc0dd33e907b1

Browse Source 
The slowdown appears to be due to an implicit conversion of distinct (yet semantically identical) lambdas to `std::function`. Lifting out the lambdas into functors that don't get re-instantiated reduces compilation times by nearly half.

Fixes #4156

PiperOrigin-RevId: 523447948
Change-Id: Ib0ae0761a54d7b1f2b706b14b2858eedf47e2297
This commit is contained in:
Abseil Team 2023-04-11 10:54:26 -07:00 committed by Copybara-Service
parent 7f6f9c12ad
commit 8fa9461cc2
1 changed files with 55 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
googlemock/include/gmock/gmock-spec-builders.h
View File

@ -204,6 +204,9 @@ class GTEST_API_ UntypedFunctionMockerBase {
using UntypedExpectations = std::vector<std::shared_ptr<ExpectationBase>>;
struct UninterestingCallCleanupHandler;
struct FailureCleanupHandler;
// Returns an Expectation object that references and co-owns exp,
// which must be an expectation on this mock function.
Expectation GetHandleOf(ExpectationBase* exp);
@ -1396,6 +1399,41 @@ class Cleanup final {
std::function<void()> f_;
};
struct UntypedFunctionMockerBase::UninterestingCallCleanupHandler {
CallReaction reaction;
std::stringstream& ss;
~UninterestingCallCleanupHandler() {
ReportUninterestingCall(reaction, ss.str());
}
};
struct UntypedFunctionMockerBase::FailureCleanupHandler {
std::stringstream& ss;
std::stringstream& why;
std::stringstream& loc;
const ExpectationBase* untyped_expectation;
bool found;
bool is_excessive;
~FailureCleanupHandler() {
ss << "\n" << why.str();
if (!found) {
// No expectation matches this call - reports a failure.
Expect(false, nullptr, -1, ss.str());
} else if (is_excessive) {
// We had an upper-bound violation and the failure message is in ss.
Expect(false, untyped_expectation->file(), untyped_expectation->line(),
ss.str());
} else {
// We had an expected call and the matching expectation is
// described in ss.
Log(kInfo, loc.str() + ss.str(), 2);
}
}
};
template <typename F>
class FunctionMocker;
@ -1794,8 +1832,15 @@ R FunctionMocker<R(Args...)>::InvokeWith(ArgumentTuple&& args)
//
// We use RAII to do the latter in case R is void or a non-moveable type. In
// either case we can't assign it to a local variable.
const Cleanup report_uninteresting_call(
[&] { ReportUninterestingCall(reaction, ss.str()); });
//
// Note that std::bind() is essential here.
// We *don't* use any local callback types (like lambdas).
// Doing so slows down compilation dramatically because the *constructor* of
// std::function<T> is re-instantiated with different template
// parameters each time.
const UninterestingCallCleanupHandler report_uninteresting_call = {
reaction, ss
};
return PerformActionAndPrintResult(nullptr, std::move(args), ss.str(), ss);
}
@ -1839,22 +1884,14 @@ R FunctionMocker<R(Args...)>::InvokeWith(ArgumentTuple&& args)
//
// We use RAII to do the latter in case R is void or a non-moveable type. In
// either case we can't assign it to a local variable.
const Cleanup handle_failures([&] {
ss << "\n" << why.str();
if (!found) {
// No expectation matches this call - reports a failure.
Expect(false, nullptr, -1, ss.str());
} else if (is_excessive) {
// We had an upper-bound violation and the failure message is in ss.
Expect(false, untyped_expectation->file(), untyped_expectation->line(),
ss.str());
} else {
// We had an expected call and the matching expectation is
// described in ss.
Log(kInfo, loc.str() + ss.str(), 2);
}
});
//
// Note that we *don't* use any local callback types (like lambdas) here.
// Doing so slows down compilation dramatically because the *constructor* of
// std::function<T> is re-instantiated with different template
// parameters each time.
const FailureCleanupHandler handle_failures = {
ss, why, loc, untyped_expectation, found, is_excessive
};
return PerformActionAndPrintResult(untyped_action, std::move(args), ss.str(),
ss);