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//===---------------- MapperJITLinkMemoryManagerTest.cpp ------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "OrcTestCommon.h"
#include "llvm/ExecutionEngine/Orc/MapperJITLinkMemoryManager.h"
#include "llvm/ExecutionEngine/Orc/MemoryMapper.h"
#include "llvm/Testing/Support/Error.h"
#include <vector>
using namespace llvm;
using namespace llvm::jitlink;
using namespace llvm::orc;
using namespace llvm::orc::shared;
namespace {
class CounterMapper final : public MemoryMapper {
public:
CounterMapper(std::unique_ptr<MemoryMapper> Mapper)
: Mapper(std::move(Mapper)) {}
unsigned int getPageSize() override { return Mapper->getPageSize(); }
void reserve(size_t NumBytes, OnReservedFunction OnReserved) override {
++ReserveCount;
return Mapper->reserve(NumBytes, std::move(OnReserved));
}
void initialize(AllocInfo &AI, OnInitializedFunction OnInitialized) override {
++InitCount;
return Mapper->initialize(AI, std::move(OnInitialized));
}
char *prepare(ExecutorAddr Addr, size_t ContentSize) override {
return Mapper->prepare(Addr, ContentSize);
}
void deinitialize(ArrayRef<ExecutorAddr> Allocations,
OnDeinitializedFunction OnDeInitialized) override {
++DeinitCount;
return Mapper->deinitialize(Allocations, std::move(OnDeInitialized));
}
void release(ArrayRef<ExecutorAddr> Reservations,
OnReleasedFunction OnRelease) override {
++ReleaseCount;
return Mapper->release(Reservations, std::move(OnRelease));
}
int ReserveCount = 0, InitCount = 0, DeinitCount = 0, ReleaseCount = 0;
private:
std::unique_ptr<MemoryMapper> Mapper;
};
TEST(MapperJITLinkMemoryManagerTest, InProcess) {
auto Mapper = std::make_unique<CounterMapper>(
cantFail(InProcessMemoryMapper::Create()));
auto *Counter = static_cast<CounterMapper *>(Mapper.get());
auto MemMgr = std::make_unique<MapperJITLinkMemoryManager>(16 * 1024 * 1024,
std::move(Mapper));
EXPECT_EQ(Counter->ReserveCount, 0);
EXPECT_EQ(Counter->InitCount, 0);
StringRef Hello = "hello";
auto SSA1 = jitlink::SimpleSegmentAlloc::Create(
*MemMgr, std::make_shared<SymbolStringPool>(),
Triple("x86_64-apple-darwin"), nullptr,
{{MemProt::Read, {Hello.size(), Align(1)}}});
EXPECT_THAT_EXPECTED(SSA1, Succeeded());
EXPECT_EQ(Counter->ReserveCount, 1);
EXPECT_EQ(Counter->InitCount, 0);
auto SegInfo1 = SSA1->getSegInfo(MemProt::Read);
memcpy(SegInfo1.WorkingMem.data(), Hello.data(), Hello.size());
auto FA1 = SSA1->finalize();
EXPECT_THAT_EXPECTED(FA1, Succeeded());
EXPECT_EQ(Counter->ReserveCount, 1);
EXPECT_EQ(Counter->InitCount, 1);
auto SSA2 = jitlink::SimpleSegmentAlloc::Create(
*MemMgr, std::make_shared<SymbolStringPool>(),
Triple("x86_64-apple-darwin"), nullptr,
{{MemProt::Read, {Hello.size(), Align(1)}}});
EXPECT_THAT_EXPECTED(SSA2, Succeeded());
// last reservation should be reused
EXPECT_EQ(Counter->ReserveCount, 1);
EXPECT_EQ(Counter->InitCount, 1);
auto SegInfo2 = SSA2->getSegInfo(MemProt::Read);
memcpy(SegInfo2.WorkingMem.data(), Hello.data(), Hello.size());
auto FA2 = SSA2->finalize();
EXPECT_THAT_EXPECTED(FA2, Succeeded());
EXPECT_EQ(Counter->ReserveCount, 1);
EXPECT_EQ(Counter->InitCount, 2);
ExecutorAddr TargetAddr1(SegInfo1.Addr);
ExecutorAddr TargetAddr2(SegInfo2.Addr);
const char *TargetMem1 = TargetAddr1.toPtr<const char *>();
StringRef TargetHello1(TargetMem1, Hello.size());
EXPECT_EQ(Hello, TargetHello1);
const char *TargetMem2 = TargetAddr2.toPtr<const char *>();
StringRef TargetHello2(TargetMem2, Hello.size());
EXPECT_EQ(Hello, TargetHello2);
EXPECT_EQ(Counter->DeinitCount, 0);
auto Err2 = MemMgr->deallocate(std::move(*FA1));
EXPECT_THAT_ERROR(std::move(Err2), Succeeded());
EXPECT_EQ(Counter->DeinitCount, 1);
auto Err3 = MemMgr->deallocate(std::move(*FA2));
EXPECT_THAT_ERROR(std::move(Err3), Succeeded());
EXPECT_EQ(Counter->DeinitCount, 2);
}
TEST(MapperJITLinkMemoryManagerTest, Coalescing) {
auto Mapper = cantFail(InProcessMemoryMapper::Create());
auto MemMgr = std::make_unique<MapperJITLinkMemoryManager>(16 * 1024 * 1024,
std::move(Mapper));
auto SSP = std::make_shared<SymbolStringPool>();
auto SSA1 = jitlink::SimpleSegmentAlloc::Create(
*MemMgr, SSP, Triple("x86_64-apple-darwin"), nullptr,
{{MemProt::Read, {1024, Align(1)}}});
EXPECT_THAT_EXPECTED(SSA1, Succeeded());
auto SegInfo1 = SSA1->getSegInfo(MemProt::Read);
ExecutorAddr TargetAddr1(SegInfo1.Addr);
auto FA1 = SSA1->finalize();
EXPECT_THAT_EXPECTED(FA1, Succeeded());
auto SSA2 = jitlink::SimpleSegmentAlloc::Create(
*MemMgr, SSP, Triple("x86_64-apple-darwin"), nullptr,
{{MemProt::Read, {1024, Align(1)}}});
EXPECT_THAT_EXPECTED(SSA2, Succeeded());
auto FA2 = SSA2->finalize();
EXPECT_THAT_EXPECTED(FA2, Succeeded());
auto Err2 = MemMgr->deallocate(std::move(*FA1));
EXPECT_THAT_ERROR(std::move(Err2), Succeeded());
auto Err3 = MemMgr->deallocate(std::move(*FA2));
EXPECT_THAT_ERROR(std::move(Err3), Succeeded());
auto SSA3 = jitlink::SimpleSegmentAlloc::Create(
*MemMgr, SSP, Triple("x86_64-apple-darwin"), nullptr,
{{MemProt::Read, {2048, Align(1)}}});
EXPECT_THAT_EXPECTED(SSA3, Succeeded());
auto SegInfo3 = SSA3->getSegInfo(MemProt::Read);
ExecutorAddr TargetAddr3(SegInfo3.Addr);
auto FA3 = SSA3->finalize();
EXPECT_THAT_EXPECTED(FA3, Succeeded());
// previous two freed 1024 blocks should be fused to form a 2048 block
EXPECT_EQ(TargetAddr1, TargetAddr3);
auto Err4 = MemMgr->deallocate(std::move(*FA3));
EXPECT_THAT_ERROR(std::move(Err4), Succeeded());
}
} // namespace
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