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v8/test/unittests/wasm/wasm-code-manager-unittest.cc
Bill Budge a449f09fad [Memory] Create memory management API in v8::internal. 
- Creates a memory management API in v8::internal, which corresponds
  to the existing one in base::OS.
- Implements the new API in terms of the old one.
- Changes all usage of the base::OS API to the one in v8::internal. This
  includes all tests, except platform and OS tests.
- Makes OS:: methods private.
- Moves all LSAN calls into the v8::internal functions.

Bug: chromium:756050
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: Iaa3f022e3e12fdebf937f3c76b6c6455014beb8a
Reviewed-on: https://chromium-review.googlesource.com/794856
Commit-Queue: Bill Budge <bbudge@chromium.org>
Reviewed-by: Eric Holk <eholk@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50139}
2017-12-15 18:49:47 +00:00

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// Copyright 2017 the V8 project 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 "test/unittests/test-utils.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "src/wasm/wasm-code-manager.h"
namespace v8 {
namespace internal {
namespace wasm {
namespace wasm_heap_unittest {
class DisjointAllocationPoolTest : public ::testing::Test {
public:
Address A(size_t n) { return reinterpret_cast<Address>(n); }
void CheckLooksLike(const DisjointAllocationPool& mem,
std::vector<std::pair<size_t, size_t>> expectation);
DisjointAllocationPool Make(std::vector<std::pair<size_t, size_t>> model);
};
void DisjointAllocationPoolTest::CheckLooksLike(
const DisjointAllocationPool& mem,
std::vector<std::pair<size_t, size_t>> expectation) {
const auto& ranges = mem.ranges();
CHECK_EQ(ranges.size(), expectation.size());
auto iter = expectation.begin();
for (auto it = ranges.begin(), e = ranges.end(); it != e; ++it, ++iter) {
CHECK_EQ(it->first, A(iter->first));
CHECK_EQ(it->second, A(iter->second));
}
}
DisjointAllocationPool DisjointAllocationPoolTest::Make(
std::vector<std::pair<size_t, size_t>> model) {
DisjointAllocationPool ret;
for (auto& pair : model) {
ret.Merge(DisjointAllocationPool(A(pair.first), A(pair.second)));
}
return ret;
}
TEST_F(DisjointAllocationPoolTest, Construct) {
DisjointAllocationPool a;
CHECK(a.IsEmpty());
CHECK_EQ(a.ranges().size(), 0);
DisjointAllocationPool b = Make({{1, 5}});
CHECK(!b.IsEmpty());
CHECK_EQ(b.ranges().size(), 1);
a.Merge(std::move(b));
CheckLooksLike(a, {{1, 5}});
DisjointAllocationPool c;
a.Merge(std::move(c));
CheckLooksLike(a, {{1, 5}});
DisjointAllocationPool e, f;
e.Merge(std::move(f));
CHECK(e.IsEmpty());
}
TEST_F(DisjointAllocationPoolTest, SimpleExtract) {
DisjointAllocationPool a = Make({{1, 5}});
DisjointAllocationPool b = a.AllocatePool(2);
CheckLooksLike(a, {{3, 5}});
CheckLooksLike(b, {{1, 3}});
a.Merge(std::move(b));
CheckLooksLike(a, {{1, 5}});
CHECK_EQ(a.ranges().size(), 1);
CHECK_EQ(a.ranges().front().first, A(1));
CHECK_EQ(a.ranges().front().second, A(5));
}
TEST_F(DisjointAllocationPoolTest, ExtractAll) {
DisjointAllocationPool a(A(1), A(5));
DisjointAllocationPool b = a.AllocatePool(4);
CheckLooksLike(b, {{1, 5}});
CHECK(a.IsEmpty());
a.Merge(std::move(b));
CheckLooksLike(a, {{1, 5}});
}
TEST_F(DisjointAllocationPoolTest, ExtractAccross) {
DisjointAllocationPool a = Make({{1, 5}, {10, 20}});
DisjointAllocationPool b = a.AllocatePool(5);
CheckLooksLike(a, {{11, 20}});
CheckLooksLike(b, {{1, 5}, {10, 11}});
a.Merge(std::move(b));
CheckLooksLike(a, {{1, 5}, {10, 20}});
}
TEST_F(DisjointAllocationPoolTest, ReassembleOutOfOrder) {
DisjointAllocationPool a = Make({{1, 5}, {10, 15}});
DisjointAllocationPool b = Make({{7, 8}, {20, 22}});
a.Merge(std::move(b));
CheckLooksLike(a, {{1, 5}, {7, 8}, {10, 15}, {20, 22}});
DisjointAllocationPool c = Make({{1, 5}, {10, 15}});
DisjointAllocationPool d = Make({{7, 8}, {20, 22}});
d.Merge(std::move(c));
CheckLooksLike(d, {{1, 5}, {7, 8}, {10, 15}, {20, 22}});
}
TEST_F(DisjointAllocationPoolTest, FailToExtract) {
DisjointAllocationPool a = Make({{1, 5}});
DisjointAllocationPool b = a.AllocatePool(5);
CheckLooksLike(a, {{1, 5}});
CHECK(b.IsEmpty());
}
TEST_F(DisjointAllocationPoolTest, FailToExtractExact) {
DisjointAllocationPool a = Make({{1, 5}, {10, 14}});
DisjointAllocationPool b = a.Allocate(5);
CheckLooksLike(a, {{1, 5}, {10, 14}});
CHECK(b.IsEmpty());
}
TEST_F(DisjointAllocationPoolTest, ExtractExact) {
DisjointAllocationPool a = Make({{1, 5}, {10, 15}});
DisjointAllocationPool b = a.Allocate(5);
CheckLooksLike(a, {{1, 5}});
CheckLooksLike(b, {{10, 15}});
}
TEST_F(DisjointAllocationPoolTest, Merging) {
DisjointAllocationPool a = Make({{10, 15}, {20, 25}});
a.Merge(Make({{15, 20}}));
CheckLooksLike(a, {{10, 25}});
}
TEST_F(DisjointAllocationPoolTest, MergingMore) {
DisjointAllocationPool a = Make({{10, 15}, {20, 25}, {30, 35}});
a.Merge(Make({{15, 20}, {25, 30}}));
CheckLooksLike(a, {{10, 35}});
}
TEST_F(DisjointAllocationPoolTest, MergingSkip) {
DisjointAllocationPool a = Make({{10, 15}, {20, 25}, {30, 35}});
a.Merge(Make({{25, 30}}));
CheckLooksLike(a, {{10, 15}, {20, 35}});
}
TEST_F(DisjointAllocationPoolTest, MergingSkipLargerSrc) {
DisjointAllocationPool a = Make({{10, 15}, {20, 25}, {30, 35}});
a.Merge(Make({{25, 30}, {35, 40}}));
CheckLooksLike(a, {{10, 15}, {20, 40}});
}
TEST_F(DisjointAllocationPoolTest, MergingSkipLargerSrcWithGap) {
DisjointAllocationPool a = Make({{10, 15}, {20, 25}, {30, 35}});
a.Merge(Make({{25, 30}, {36, 40}}));
CheckLooksLike(a, {{10, 15}, {20, 35}, {36, 40}});
}
class WasmCodeManagerTest : public TestWithIsolate {
public:
using NativeModulePtr = std::unique_ptr<NativeModule>;
enum ModuleStyle : int { Fixed = 0, Growable = 1 };
const std::vector<ModuleStyle> styles() const {
return std::vector<ModuleStyle>({Fixed, Growable});
}
// We pretend all our modules have 10 functions and no imports, just so
// we can size up the code_table.
NativeModulePtr AllocFixedModule(WasmCodeManager* manager, size_t size) {
return manager->NewNativeModule(size, 10, 0, false);
}
NativeModulePtr AllocGrowableModule(WasmCodeManager* manager, size_t size) {
return manager->NewNativeModule(size, 10, 0, true);
}
NativeModulePtr AllocModule(WasmCodeManager* manager, size_t size,
ModuleStyle style) {
switch (style) {
case Fixed:
return AllocFixedModule(manager, size);
case Growable:
return AllocGrowableModule(manager, size);
default:
UNREACHABLE();
}
}
WasmCode* AddCode(NativeModule* native_module, uint32_t index, size_t size) {
CodeDesc desc;
memset(reinterpret_cast<void*>(&desc), 0, sizeof(CodeDesc));
std::unique_ptr<byte[]> exec_buff(new byte[size]);
desc.buffer = exec_buff.get();
desc.instr_size = static_cast<int>(size);
return native_module->AddCode(desc, 0, index, 0, {}, false);
}
size_t page() const { return AllocatePageSize(); }
v8::Isolate* v8_isolate() const {
return reinterpret_cast<v8::Isolate*>(isolate());
}
};
TEST_F(WasmCodeManagerTest, EmptyCase) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 0 * page());
CHECK_EQ(0, manager.remaining_uncommitted());
NativeModulePtr native_module = AllocModule(&manager, 1 * page(), style);
CHECK(native_module);
WasmCode* code = AddCode(native_module.get(), 0, 10);
CHECK_NULL(code);
CHECK_EQ(0, manager.remaining_uncommitted());
native_module.reset();
CHECK_EQ(0, manager.remaining_uncommitted());
}
}
TEST_F(WasmCodeManagerTest, AllocateAndGoOverLimit) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 1 * page());
CHECK_EQ(1 * page(), manager.remaining_uncommitted());
NativeModulePtr native_module = AllocModule(&manager, 1 * page(), style);
CHECK(native_module);
CHECK_EQ(1 * page(), manager.remaining_uncommitted());
uint32_t index = 0;
WasmCode* code = AddCode(native_module.get(), index++, 1 * kCodeAlignment);
CHECK_NOT_NULL(code);
CHECK_EQ(0, manager.remaining_uncommitted());
code = AddCode(native_module.get(), index++, 3 * kCodeAlignment);
CHECK_NOT_NULL(code);
CHECK_EQ(0, manager.remaining_uncommitted());
code = AddCode(native_module.get(), index++, page() - 4 * kCodeAlignment);
CHECK_NOT_NULL(code);
CHECK_EQ(0, manager.remaining_uncommitted());
code = AddCode(native_module.get(), index++, 1 * kCodeAlignment);
CHECK_NULL(code);
CHECK_EQ(0, manager.remaining_uncommitted());
native_module.reset();
CHECK_EQ(1 * page(), manager.remaining_uncommitted());
}
}
TEST_F(WasmCodeManagerTest, TotalLimitIrrespectiveOfModuleCount) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 1 * page());
NativeModulePtr nm1 = AllocModule(&manager, 1 * page(), style);
NativeModulePtr nm2 = AllocModule(&manager, 1 * page(), style);
CHECK(nm1);
CHECK(nm2);
WasmCode* code = AddCode(nm1.get(), 0, 1 * page());
CHECK_NOT_NULL(code);
code = AddCode(nm2.get(), 0, 1 * page());
CHECK_NULL(code);
}
}
TEST_F(WasmCodeManagerTest, DifferentHeapsApplyLimitsIndependently) {
for (auto style : styles()) {
WasmCodeManager manager1(v8_isolate(), 1 * page());
WasmCodeManager manager2(v8_isolate(), 2 * page());
NativeModulePtr nm1 = AllocModule(&manager1, 1 * page(), style);
NativeModulePtr nm2 = AllocModule(&manager2, 1 * page(), style);
CHECK(nm1);
CHECK(nm2);
WasmCode* code = AddCode(nm1.get(), 0, 1 * page());
CHECK_NOT_NULL(code);
CHECK_EQ(0, manager1.remaining_uncommitted());
code = AddCode(nm2.get(), 0, 1 * page());
CHECK_NOT_NULL(code);
}
}
TEST_F(WasmCodeManagerTest, GrowingVsFixedModule) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 3 * page());
NativeModulePtr nm = AllocModule(&manager, 1 * page(), style);
WasmCode* code = AddCode(nm.get(), 0, 1 * page() + kCodeAlignment);
if (style == Fixed) {
CHECK_NULL(code);
CHECK_EQ(manager.remaining_uncommitted(), 3 * page());
} else {
CHECK_NOT_NULL(code);
CHECK_EQ(manager.remaining_uncommitted(), 1 * page());
}
}
}
TEST_F(WasmCodeManagerTest, CommitIncrements) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 10 * page());
NativeModulePtr nm = AllocModule(&manager, 3 * page(), style);
WasmCode* code = AddCode(nm.get(), 0, kCodeAlignment);
CHECK_NOT_NULL(code);
CHECK_EQ(manager.remaining_uncommitted(), 9 * page());
code = AddCode(nm.get(), 1, 2 * page());
CHECK_NOT_NULL(code);
CHECK_EQ(manager.remaining_uncommitted(), 7 * page());
code = AddCode(nm.get(), 2, page() - kCodeAlignment);
CHECK_NOT_NULL(code);
CHECK_EQ(manager.remaining_uncommitted(), 7 * page());
}
}
TEST_F(WasmCodeManagerTest, Lookup) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 2 * page());
NativeModulePtr nm1 = AllocModule(&manager, 1 * page(), style);
NativeModulePtr nm2 = AllocModule(&manager, 1 * page(), style);
WasmCode* code1_0 = AddCode(nm1.get(), 0, kCodeAlignment);
CHECK_EQ(nm1.get(), code1_0->owner());
WasmCode* code1_1 = AddCode(nm1.get(), 1, kCodeAlignment);
WasmCode* code2_0 = AddCode(nm2.get(), 0, kCodeAlignment);
WasmCode* code2_1 = AddCode(nm2.get(), 1, kCodeAlignment);
CHECK_EQ(nm2.get(), code2_1->owner());
CHECK_EQ(0, code1_0->index());
CHECK_EQ(1, code1_1->index());
CHECK_EQ(0, code2_0->index());
CHECK_EQ(1, code2_1->index());
// we know the manager object is allocated here, so we shouldn't
// find any WasmCode* associated with that ptr.
WasmCode* not_found =
manager.LookupCode(reinterpret_cast<Address>(&manager));
CHECK_NULL(not_found);
WasmCode* found = manager.LookupCode(code1_0->instructions().start());
CHECK_EQ(found, code1_0);
found = manager.LookupCode(code2_1->instructions().start() +
(code2_1->instructions().size() / 2));
CHECK_EQ(found, code2_1);
found = manager.LookupCode(code2_1->instructions().start() +
code2_1->instructions().size() - 1);
CHECK_EQ(found, code2_1);
found = manager.LookupCode(code2_1->instructions().start() +
code2_1->instructions().size());
CHECK_NULL(found);
Address mid_code1_1 =
code1_1->instructions().start() + (code1_1->instructions().size() / 2);
CHECK_EQ(code1_1, manager.LookupCode(mid_code1_1));
nm1.reset();
CHECK_NULL(manager.LookupCode(mid_code1_1));
}
}
TEST_F(WasmCodeManagerTest, MultiManagerLookup) {
for (auto style : styles()) {
WasmCodeManager manager1(v8_isolate(), 2 * page());
WasmCodeManager manager2(v8_isolate(), 2 * page());
NativeModulePtr nm1 = AllocModule(&manager1, 1 * page(), style);
NativeModulePtr nm2 = AllocModule(&manager2, 1 * page(), style);
WasmCode* code1_0 = AddCode(nm1.get(), 0, kCodeAlignment);
CHECK_EQ(nm1.get(), code1_0->owner());
WasmCode* code1_1 = AddCode(nm1.get(), 1, kCodeAlignment);
WasmCode* code2_0 = AddCode(nm2.get(), 0, kCodeAlignment);
WasmCode* code2_1 = AddCode(nm2.get(), 1, kCodeAlignment);
CHECK_EQ(nm2.get(), code2_1->owner());
CHECK_EQ(0, code1_0->index());
CHECK_EQ(1, code1_1->index());
CHECK_EQ(0, code2_0->index());
CHECK_EQ(1, code2_1->index());
CHECK_EQ(code1_0, manager1.LookupCode(code1_0->instructions().start()));
CHECK_NULL(manager2.LookupCode(code1_0->instructions().start()));
}
}
TEST_F(WasmCodeManagerTest, LookupWorksAfterRewrite) {
for (auto style : styles()) {
WasmCodeManager manager(v8_isolate(), 2 * page());
NativeModulePtr nm1 = AllocModule(&manager, 1 * page(), style);
WasmCode* code0 = AddCode(nm1.get(), 0, kCodeAlignment);
WasmCode* code1 = AddCode(nm1.get(), 1, kCodeAlignment);
CHECK_EQ(0, code0->index());
CHECK_EQ(1, code1->index());
CHECK_EQ(code1, manager.LookupCode(code1->instructions().start()));
WasmCode* code1_1 = AddCode(nm1.get(), 1, kCodeAlignment);
CHECK_EQ(1, code1_1->index());
CHECK_EQ(code1, manager.LookupCode(code1->instructions().start()));
CHECK_EQ(code1_1, manager.LookupCode(code1_1->instructions().start()));
}
}
} // namespace wasm_heap_unittest
} // namespace wasm
} // namespace internal
} // namespace v8
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