Source code
Revision control
Copy as Markdown
Other Tools
/* Any copyright is dedicated to the Public Domain.
*/
#include "TelemetryFixture.h"
#include "TelemetryTestHelpers.h"
#include "other/CombinedStacks.h"
#include "other/ProcessedStack.h"
#include "nsPrintfCString.h"
using namespace mozilla::Telemetry;
using namespace TelemetryTestHelpers;
TEST_F(TelemetryTestFixture, CombinedStacks) {
const size_t kMaxStacksKept = 10;
CombinedStacks stacks(kMaxStacksKept);
size_t iterations = kMaxStacksKept * 2;
for (size_t i = 0; i < iterations; ++i) {
ProcessedStack stack;
ProcessedStack::Frame frame = {static_cast<uint16_t>(i)};
const nsAutoString& name =
NS_ConvertUTF8toUTF16(nsPrintfCString("test%zu", i));
ProcessedStack::Module module = {name};
stack.AddFrame(frame);
stack.AddModule(module);
stacks.AddStack(stack);
}
ASSERT_EQ(stacks.GetStackCount(), kMaxStacksKept) << "Wrong number of stacks";
ASSERT_EQ(stacks.GetModuleCount(), kMaxStacksKept * 2)
<< "Wrong number of modules";
for (size_t i = 0; i < kMaxStacksKept; ++i) {
ProcessedStack::Frame frame = stacks.GetStack(i)[0];
ASSERT_EQ(frame.mOffset, kMaxStacksKept + i)
<< "Frame is not returning expected value";
ProcessedStack::Module module = stacks.GetModule(frame.mModIndex);
nsPrintfCString moduleName("test%hu", frame.mModIndex);
ASSERT_TRUE(module.mName.Equals(NS_ConvertUTF8toUTF16(moduleName)))
<< "Module should have expected name";
}
for (size_t i = 0; i < kMaxStacksKept; ++i) {
stacks.RemoveStack(kMaxStacksKept - i - 1);
ASSERT_EQ(stacks.GetStackCount(), kMaxStacksKept - i - 1)
<< "Stack should be removed";
}
}
template <int N>
ProcessedStack MakeStack(const nsLiteralString (&aModules)[N],
const uintptr_t (&aOffsets)[N]) {
ProcessedStack stack;
for (int i = 0; i < N; ++i) {
ProcessedStack::Frame frame = {aOffsets[i]};
if (aModules[i].IsEmpty()) {
frame.mModIndex = std::numeric_limits<uint16_t>::max();
} else {
frame.mModIndex = stack.GetNumModules();
stack.AddModule(ProcessedStack::Module{aModules[i]});
}
stack.AddFrame(frame);
}
return stack;
}
TEST(CombinedStacks, Combine)
{
const nsLiteralString moduleSet1[] = {u"mod1"_ns, u"mod2"_ns, u"base"_ns};
const nsLiteralString moduleSet2[] = {u"modX"_ns, u""_ns, u"modZ"_ns,
u"base"_ns};
// [0] 00 mod1+100
// 01 mod2+200
// 02 base+300
// [1] 00 mod1+1000
// 01 mod2+2000
// 02 base+3000
// [2] 00 modX+100
// 01 <no module>+200
// 02 modZ+300
// 03 base+400
// [3] 00 modX+1000
// 01 <no module>+3000
// 02 modZ+2000
// 03 base+4000
const ProcessedStack testStacks[] = {
MakeStack(moduleSet1, {100ul, 200ul, 300ul}),
MakeStack(moduleSet1, {1000ul, 2000ul, 3000ul}),
MakeStack(moduleSet2, {100ul, 200ul, 300ul, 400ul}),
MakeStack(moduleSet2, {1000ul, 2000ul, 3000ul, 4000ul}),
};
// combined1 <-- testStacks[0] + testStacks[1]
// combined2 <-- testStacks[2] + testStacks[3]
CombinedStacks combined1, combined2;
combined1.AddStack(testStacks[0]);
combined1.AddStack(testStacks[1]);
combined2.AddStack(testStacks[2]);
combined2.AddStack(testStacks[3]);
EXPECT_EQ(combined1.GetModuleCount(), mozilla::ArrayLength(moduleSet1));
EXPECT_EQ(combined1.GetStackCount(), 2u);
EXPECT_EQ(combined2.GetModuleCount(), mozilla::ArrayLength(moduleSet2) - 1);
EXPECT_EQ(combined2.GetStackCount(), 2u);
// combined1 <-- combined1 + combined2
combined1.AddStacks(combined2);
EXPECT_EQ(combined1.GetModuleCount(), 5u); // {mod1, mod2, modX, modZ, base}
EXPECT_EQ(combined1.GetStackCount(), mozilla::ArrayLength(testStacks));
for (size_t i = 0; i < combined1.GetStackCount(); ++i) {
const auto& expectedStack = testStacks[i];
const auto& actualStack = combined1.GetStack(i);
EXPECT_EQ(actualStack.size(), expectedStack.GetStackSize());
if (actualStack.size() != expectedStack.GetStackSize()) {
continue;
}
for (size_t j = 0; j < actualStack.size(); ++j) {
const auto& expectedFrame = expectedStack.GetFrame(j);
const auto& actualFrame = actualStack[j];
EXPECT_EQ(actualFrame.mOffset, expectedFrame.mOffset);
if (expectedFrame.mModIndex == std::numeric_limits<uint16_t>::max()) {
EXPECT_EQ(actualFrame.mModIndex, std::numeric_limits<uint16_t>::max());
} else {
EXPECT_EQ(combined1.GetModule(actualFrame.mModIndex),
expectedStack.GetModule(expectedFrame.mModIndex));
}
}
}
// Only testStacks[3] will be stored into oneStack
CombinedStacks oneStack(1);
oneStack.AddStacks(combined1);
EXPECT_EQ(oneStack.GetStackCount(), 1u);
EXPECT_EQ(oneStack.GetStack(0).size(), testStacks[3].GetStackSize());
for (size_t i = 0; i < oneStack.GetStack(0).size(); ++i) {
const auto& expectedFrame = testStacks[3].GetFrame(i);
const auto& actualFrame = oneStack.GetStack(0)[i];
EXPECT_EQ(actualFrame.mOffset, expectedFrame.mOffset);
if (expectedFrame.mModIndex == std::numeric_limits<uint16_t>::max()) {
EXPECT_EQ(actualFrame.mModIndex, std::numeric_limits<uint16_t>::max());
} else {
EXPECT_EQ(oneStack.GetModule(actualFrame.mModIndex),
testStacks[3].GetModule(expectedFrame.mModIndex));
}
}
}