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//===- unittests/TimeProfilerTest.cpp - TimeProfiler tests ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// These are bare-minimum 'smoke' tests of the time profiler. Not tested:
// - multi-threading
// - 'Total' entries
// - elision of short or ill-formed entries
// - detail callback
// - no calls to now() if profiling is disabled
// - suppression of contributions to total entries for nested entries
//===----------------------------------------------------------------------===//
#include "llvm/Support/TimeProfiler.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
void setupProfiler() {
timeTraceProfilerInitialize(/*TimeTraceGranularity=*/0, "test");
}
std::string teardownProfiler() {
SmallVector<char, 1024> smallVector;
raw_svector_ostream os(smallVector);
timeTraceProfilerWrite(os);
timeTraceProfilerCleanup();
return os.str().str();
}
TEST(TimeProfiler, Scope_Smoke) {
setupProfiler();
{ TimeTraceScope scope("event", "detail"); }
std::string json = teardownProfiler();
ASSERT_TRUE(json.find(R"("name":"event")") != std::string::npos);
ASSERT_TRUE(json.find(R"("detail":"detail")") != std::string::npos);
}
TEST(TimeProfiler, Begin_End_Smoke) {
setupProfiler();
timeTraceProfilerBegin("event", "detail");
timeTraceProfilerEnd();
std::string json = teardownProfiler();
ASSERT_TRUE(json.find(R"("name":"event")") != std::string::npos);
ASSERT_TRUE(json.find(R"("detail":"detail")") != std::string::npos);
}
TEST(TimeProfiler, Async_Begin_End_Smoke) {
setupProfiler();
auto *Profiler = timeTraceAsyncProfilerBegin("event", "detail");
timeTraceProfilerEnd(Profiler);
std::string json = teardownProfiler();
ASSERT_TRUE(json.find(R"("name":"event")") != std::string::npos);
ASSERT_TRUE(json.find(R"("detail":"detail")") != std::string::npos);
}
TEST(TimeProfiler, Begin_End_Disabled) {
// Nothing should be observable here. The test is really just making sure
// we've not got a stray nullptr deref.
timeTraceProfilerBegin("event", "detail");
timeTraceProfilerEnd();
}
TEST(TimeProfiler, Instant_Add_Smoke) {
setupProfiler();
timeTraceProfilerBegin("sync event", "sync detail");
timeTraceAddInstantEvent("instant event", [&] { return "instant detail"; });
timeTraceProfilerEnd();
std::string json = teardownProfiler();
ASSERT_TRUE(json.find(R"("name":"sync event")") != std::string::npos);
ASSERT_TRUE(json.find(R"("detail":"sync detail")") != std::string::npos);
ASSERT_TRUE(json.find(R"("name":"instant event")") != std::string::npos);
ASSERT_TRUE(json.find(R"("detail":"instant detail")") != std::string::npos);
}
TEST(TimeProfiler, Instant_Not_Added_Smoke) {
setupProfiler();
timeTraceAddInstantEvent("instant event", [&] { return "instant detail"; });
std::string json = teardownProfiler();
ASSERT_TRUE(json.find(R"("name":"instant event")") == std::string::npos);
ASSERT_TRUE(json.find(R"("detail":"instant detail")") == std::string::npos);
}
} // namespace
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