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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/trace_event/process_memory_dump.h"
#include "base/memory/scoped_ptr.h"
#include "base/trace_event/memory_allocator_dump_guid.h"
#include "base/trace_event/trace_event_argument.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace trace_event {
TEST(ProcessMemoryDumpTest, Clear) {
scoped_ptr<ProcessMemoryDump> pmd1(new ProcessMemoryDump(nullptr));
pmd1->CreateAllocatorDump("mad1");
pmd1->CreateAllocatorDump("mad2");
ASSERT_FALSE(pmd1->allocator_dumps().empty());
pmd1->process_totals()->set_resident_set_bytes(42);
pmd1->set_has_process_totals();
pmd1->process_mmaps()->AddVMRegion(ProcessMemoryMaps::VMRegion());
pmd1->set_has_process_mmaps();
pmd1->AddOwnershipEdge(MemoryAllocatorDumpGuid(42),
MemoryAllocatorDumpGuid(4242));
MemoryAllocatorDumpGuid shared_mad_guid(1);
pmd1->CreateSharedGlobalAllocatorDump(shared_mad_guid);
pmd1->Clear();
ASSERT_TRUE(pmd1->allocator_dumps().empty());
ASSERT_TRUE(pmd1->allocator_dumps_edges().empty());
ASSERT_EQ(nullptr, pmd1->GetAllocatorDump("mad1"));
ASSERT_EQ(nullptr, pmd1->GetAllocatorDump("mad2"));
ASSERT_FALSE(pmd1->has_process_totals());
ASSERT_FALSE(pmd1->has_process_mmaps());
ASSERT_TRUE(pmd1->process_mmaps()->vm_regions().empty());
ASSERT_EQ(nullptr, pmd1->GetSharedGlobalAllocatorDump(shared_mad_guid));
// Check that calling AsValueInto() doesn't cause a crash.
scoped_refptr<TracedValue> traced_value(new TracedValue());
pmd1->AsValueInto(traced_value.get());
// Check that the pmd can be reused and behaves as expected.
auto mad1 = pmd1->CreateAllocatorDump("mad1");
auto mad3 = pmd1->CreateAllocatorDump("mad3");
auto shared_mad = pmd1->CreateSharedGlobalAllocatorDump(shared_mad_guid);
ASSERT_EQ(3u, pmd1->allocator_dumps().size());
ASSERT_EQ(mad1, pmd1->GetAllocatorDump("mad1"));
ASSERT_EQ(nullptr, pmd1->GetAllocatorDump("mad2"));
ASSERT_EQ(mad3, pmd1->GetAllocatorDump("mad3"));
ASSERT_EQ(shared_mad, pmd1->GetSharedGlobalAllocatorDump(shared_mad_guid));
traced_value = new TracedValue();
pmd1->AsValueInto(traced_value.get());
pmd1.reset();
}
TEST(ProcessMemoryDumpTest, TakeAllDumpsFrom) {
scoped_refptr<TracedValue> traced_value(new TracedValue());
scoped_ptr<ProcessMemoryDump> pmd1(new ProcessMemoryDump(nullptr));
auto mad1_1 = pmd1->CreateAllocatorDump("pmd1/mad1");
auto mad1_2 = pmd1->CreateAllocatorDump("pmd1/mad2");
pmd1->AddOwnershipEdge(mad1_1->guid(), mad1_2->guid());
scoped_ptr<ProcessMemoryDump> pmd2(new ProcessMemoryDump(nullptr));
auto mad2_1 = pmd2->CreateAllocatorDump("pmd2/mad1");
auto mad2_2 = pmd2->CreateAllocatorDump("pmd2/mad2");
pmd1->AddOwnershipEdge(mad2_1->guid(), mad2_2->guid());
MemoryAllocatorDumpGuid shared_mad_guid(1);
auto shared_mad = pmd2->CreateSharedGlobalAllocatorDump(shared_mad_guid);
pmd1->TakeAllDumpsFrom(pmd2.get());
// Make sure that pmd2 is empty but still usable after it has been emptied.
ASSERT_TRUE(pmd2->allocator_dumps().empty());
ASSERT_TRUE(pmd2->allocator_dumps_edges().empty());
pmd2->CreateAllocatorDump("pmd2/this_mad_stays_with_pmd2");
ASSERT_EQ(1u, pmd2->allocator_dumps().size());
ASSERT_EQ(1u, pmd2->allocator_dumps().count("pmd2/this_mad_stays_with_pmd2"));
pmd2->AddOwnershipEdge(MemoryAllocatorDumpGuid(42),
MemoryAllocatorDumpGuid(4242));
// Check that calling AsValueInto() doesn't cause a crash.
pmd2->AsValueInto(traced_value.get());
// Free the |pmd2| to check that the memory ownership of the two MAD(s)
// has been transferred to |pmd1|.
pmd2.reset();
// Now check that |pmd1| has been effectively merged.
ASSERT_EQ(5u, pmd1->allocator_dumps().size());
ASSERT_EQ(1u, pmd1->allocator_dumps().count("pmd1/mad1"));
ASSERT_EQ(1u, pmd1->allocator_dumps().count("pmd1/mad2"));
ASSERT_EQ(1u, pmd1->allocator_dumps().count("pmd2/mad1"));
ASSERT_EQ(1u, pmd1->allocator_dumps().count("pmd1/mad2"));
ASSERT_EQ(2u, pmd1->allocator_dumps_edges().size());
ASSERT_EQ(shared_mad, pmd1->GetSharedGlobalAllocatorDump(shared_mad_guid));
// Check that calling AsValueInto() doesn't cause a crash.
traced_value = new TracedValue();
pmd1->AsValueInto(traced_value.get());
pmd1.reset();
}
TEST(ProcessMemoryDumpTest, Suballocations) {
scoped_ptr<ProcessMemoryDump> pmd(new ProcessMemoryDump(nullptr));
const std::string allocator_dump_name = "fakealloc/allocated_objects";
pmd->CreateAllocatorDump(allocator_dump_name);
// Create one allocation with an auto-assigned guid and mark it as a
// suballocation of "fakealloc/allocated_objects".
auto pic1_dump = pmd->CreateAllocatorDump("picturemanager/picture1");
pmd->AddSuballocation(pic1_dump->guid(), allocator_dump_name);
// Same here, but this time create an allocation with an explicit guid.
auto pic2_dump = pmd->CreateAllocatorDump("picturemanager/picture2",
MemoryAllocatorDumpGuid(0x42));
pmd->AddSuballocation(pic2_dump->guid(), allocator_dump_name);
// Now check that AddSuballocation() has created anonymous child dumps under
// "fakealloc/allocated_objects".
auto anon_node_1_it = pmd->allocator_dumps().find(
allocator_dump_name + "/__" + pic1_dump->guid().ToString());
ASSERT_NE(pmd->allocator_dumps().end(), anon_node_1_it);
auto anon_node_2_it =
pmd->allocator_dumps().find(allocator_dump_name + "/__42");
ASSERT_NE(pmd->allocator_dumps().end(), anon_node_2_it);
// Finally check that AddSuballocation() has created also the
// edges between the pictures and the anonymous allocator child dumps.
bool found_edge[2]{false, false};
for (const auto& e : pmd->allocator_dumps_edges()) {
found_edge[0] |= (e.source == pic1_dump->guid() &&
e.target == anon_node_1_it->second->guid());
found_edge[1] |= (e.source == pic2_dump->guid() &&
e.target == anon_node_2_it->second->guid());
}
ASSERT_TRUE(found_edge[0]);
ASSERT_TRUE(found_edge[1]);
// Check that calling AsValueInto() doesn't cause a crash.
scoped_refptr<TracedValue> traced_value(new TracedValue());
pmd->AsValueInto(traced_value.get());
pmd.reset();
}
} // namespace trace_event
} // namespace base
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