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//===- Caching.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 "llvm/Support/Caching.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
#define ASSERT_NO_ERROR(x) \
if (std::error_code ASSERT_NO_ERROR_ec = x) { \
SmallString<128> MessageStorage; \
raw_svector_ostream Message(MessageStorage); \
Message << #x ": did not return errc::success.\n" \
<< "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
<< "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \
} else { \
}
char data[] = "some data";
TEST(Caching, Normal) {
SmallString<256> CacheDir;
sys::fs::createUniquePath("llvm_test_cache-%%%%%%", CacheDir, true);
sys::fs::remove_directories(CacheDir.str());
std::unique_ptr<MemoryBuffer> CachedBuffer;
auto AddBuffer = [&CachedBuffer](unsigned Task, const Twine &ModuleName,
std::unique_ptr<MemoryBuffer> M) {
CachedBuffer = std::move(M);
};
auto CacheOrErr =
localCache("LLVMTestCache", "LLVMTest", CacheDir, AddBuffer);
ASSERT_TRUE(bool(CacheOrErr));
FileCache &Cache = *CacheOrErr;
{
auto AddStreamOrErr = Cache(1, "foo", "");
ASSERT_TRUE(bool(AddStreamOrErr));
AddStreamFn &AddStream = *AddStreamOrErr;
ASSERT_TRUE(AddStream);
auto FileOrErr = AddStream(1, "");
ASSERT_TRUE(bool(FileOrErr));
CachedFileStream *CFS = FileOrErr->get();
(*CFS->OS).write(data, sizeof(data));
ASSERT_THAT_ERROR(CFS->commit(), Succeeded());
}
{
auto AddStreamOrErr = Cache(1, "foo", "");
ASSERT_TRUE(bool(AddStreamOrErr));
AddStreamFn &AddStream = *AddStreamOrErr;
ASSERT_FALSE(AddStream);
ASSERT_TRUE(CachedBuffer->getBufferSize() == sizeof(data));
StringRef readData = CachedBuffer->getBuffer();
ASSERT_TRUE(memcmp(data, readData.data(), sizeof(data)) == 0);
}
ASSERT_NO_ERROR(sys::fs::remove_directories(CacheDir.str()));
}
TEST(Caching, WriteAfterCommit) {
SmallString<256> CacheDir;
sys::fs::createUniquePath("llvm_test_cache-%%%%%%", CacheDir, true);
sys::fs::remove_directories(CacheDir.str());
std::unique_ptr<MemoryBuffer> CachedBuffer;
auto AddBuffer = [&CachedBuffer](unsigned Task, const Twine &ModuleName,
std::unique_ptr<MemoryBuffer> M) {
CachedBuffer = std::move(M);
};
auto CacheOrErr =
localCache("LLVMTestCache", "LLVMTest", CacheDir, AddBuffer);
ASSERT_TRUE(bool(CacheOrErr));
FileCache &Cache = *CacheOrErr;
auto AddStreamOrErr = Cache(1, "foo", "");
ASSERT_TRUE(bool(AddStreamOrErr));
AddStreamFn &AddStream = *AddStreamOrErr;
ASSERT_TRUE(AddStream);
auto FileOrErr = AddStream(1, "");
ASSERT_TRUE(bool(FileOrErr));
CachedFileStream *CFS = FileOrErr->get();
(*CFS->OS).write(data, sizeof(data));
ASSERT_THAT_ERROR(CFS->commit(), Succeeded());
EXPECT_DEATH(
{ (*CFS->OS).write(data, sizeof(data)); }, "")
<< "Write after commit did not cause abort";
ASSERT_NO_ERROR(sys::fs::remove_directories(CacheDir.str()));
}
TEST(Caching, NoCommit) {
SmallString<256> CacheDir;
sys::fs::createUniquePath("llvm_test_cache-%%%%%%", CacheDir, true);
sys::fs::remove_directories(CacheDir.str());
std::unique_ptr<MemoryBuffer> CachedBuffer;
auto AddBuffer = [&CachedBuffer](unsigned Task, const Twine &ModuleName,
std::unique_ptr<MemoryBuffer> M) {
CachedBuffer = std::move(M);
};
auto CacheOrErr =
localCache("LLVMTestCache", "LLVMTest", CacheDir, AddBuffer);
ASSERT_TRUE(bool(CacheOrErr));
FileCache &Cache = *CacheOrErr;
auto AddStreamOrErr = Cache(1, "foo", "");
ASSERT_TRUE(bool(AddStreamOrErr));
AddStreamFn &AddStream = *AddStreamOrErr;
ASSERT_TRUE(AddStream);
auto FileOrErr = AddStream(1, "");
ASSERT_TRUE(bool(FileOrErr));
CachedFileStream *CFS = FileOrErr->get();
(*CFS->OS).write(data, sizeof(data));
ASSERT_THAT_ERROR(CFS->commit(), Succeeded());
EXPECT_DEATH(
{
auto FileOrErr = AddStream(1, "");
ASSERT_TRUE(bool(FileOrErr));
CachedFileStream *CFS = FileOrErr->get();
(*CFS->OS).write(data, sizeof(data));
},
"")
<< "destruction without commit did not cause error";
ASSERT_NO_ERROR(sys::fs::remove_directories(CacheDir.str()));
}
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