Vous ne pouvez pas sélectionner plus de 25 sujets
Les noms de sujets doivent commencer par une lettre ou un nombre, peuvent contenir des tirets ('-') et peuvent comporter jusqu'à 35 caractères.
248 lignes
7.0 KiB
248 lignes
7.0 KiB
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
|
|
#include "leveldb/env.h"
|
|
|
|
#include <algorithm>
|
|
|
|
#include "gtest/gtest.h"
|
|
#include "port/port.h"
|
|
#include "port/thread_annotations.h"
|
|
#include "util/mutexlock.h"
|
|
#include "util/testutil.h"
|
|
|
|
namespace leveldb {
|
|
|
|
class EnvTest : public testing::Test {
|
|
public:
|
|
EnvTest() : env_(Env::Default()) {}
|
|
|
|
Env* env_;
|
|
};
|
|
|
|
TEST_F(EnvTest, ReadWrite) {
|
|
Random rnd(test::RandomSeed());
|
|
|
|
// Get file to use for testing.
|
|
std::string test_dir;
|
|
ASSERT_LEVELDB_OK(env_->GetTestDirectory(&test_dir));
|
|
std::string test_file_name = test_dir + "/open_on_read.txt";
|
|
WritableFile* writable_file;
|
|
ASSERT_LEVELDB_OK(env_->NewWritableFile(test_file_name, &writable_file));
|
|
|
|
// Fill a file with data generated via a sequence of randomly sized writes.
|
|
static const size_t kDataSize = 10 * 1048576;
|
|
std::string data;
|
|
while (data.size() < kDataSize) {
|
|
int len = rnd.Skewed(18); // Up to 2^18 - 1, but typically much smaller
|
|
std::string r;
|
|
test::RandomString(&rnd, len, &r);
|
|
ASSERT_LEVELDB_OK(writable_file->Append(r));
|
|
data += r;
|
|
if (rnd.OneIn(10)) {
|
|
ASSERT_LEVELDB_OK(writable_file->Flush());
|
|
}
|
|
}
|
|
ASSERT_LEVELDB_OK(writable_file->Sync());
|
|
ASSERT_LEVELDB_OK(writable_file->Close());
|
|
delete writable_file;
|
|
|
|
// Read all data using a sequence of randomly sized reads.
|
|
SequentialFile* sequential_file;
|
|
ASSERT_LEVELDB_OK(env_->NewSequentialFile(test_file_name, &sequential_file));
|
|
std::string read_result;
|
|
std::string scratch;
|
|
while (read_result.size() < data.size()) {
|
|
int len = std::min<int>(rnd.Skewed(18), data.size() - read_result.size());
|
|
scratch.resize(std::max(len, 1)); // at least 1 so &scratch[0] is legal
|
|
Slice read;
|
|
ASSERT_LEVELDB_OK(sequential_file->Read(len, &read, &scratch[0]));
|
|
if (len > 0) {
|
|
ASSERT_GT(read.size(), 0);
|
|
}
|
|
ASSERT_LE(read.size(), len);
|
|
read_result.append(read.data(), read.size());
|
|
}
|
|
ASSERT_EQ(read_result, data);
|
|
delete sequential_file;
|
|
}
|
|
|
|
TEST_F(EnvTest, RunImmediately) {
|
|
struct RunState {
|
|
port::Mutex mu;
|
|
port::CondVar cvar{&mu};
|
|
bool called = false;
|
|
|
|
static void Run(void* arg) {
|
|
RunState* state = reinterpret_cast<RunState*>(arg);
|
|
MutexLock l(&state->mu);
|
|
ASSERT_EQ(state->called, false);
|
|
state->called = true;
|
|
state->cvar.Signal();
|
|
}
|
|
};
|
|
|
|
RunState state;
|
|
env_->Schedule(&RunState::Run, &state);
|
|
|
|
MutexLock l(&state.mu);
|
|
while (!state.called) {
|
|
state.cvar.Wait();
|
|
}
|
|
}
|
|
|
|
TEST_F(EnvTest, RunMany) {
|
|
struct RunState {
|
|
port::Mutex mu;
|
|
port::CondVar cvar{&mu};
|
|
int run_count = 0;
|
|
};
|
|
|
|
struct Callback {
|
|
RunState* const state_; // Pointer to shared state.
|
|
bool run = false;
|
|
|
|
Callback(RunState* s) : state_(s) {}
|
|
|
|
static void Run(void* arg) {
|
|
Callback* callback = reinterpret_cast<Callback*>(arg);
|
|
RunState* state = callback->state_;
|
|
|
|
MutexLock l(&state->mu);
|
|
state->run_count++;
|
|
callback->run = true;
|
|
state->cvar.Signal();
|
|
}
|
|
};
|
|
|
|
RunState state;
|
|
Callback callback1(&state);
|
|
Callback callback2(&state);
|
|
Callback callback3(&state);
|
|
Callback callback4(&state);
|
|
env_->Schedule(&Callback::Run, &callback1);
|
|
env_->Schedule(&Callback::Run, &callback2);
|
|
env_->Schedule(&Callback::Run, &callback3);
|
|
env_->Schedule(&Callback::Run, &callback4);
|
|
|
|
MutexLock l(&state.mu);
|
|
while (state.run_count != 4) {
|
|
state.cvar.Wait();
|
|
}
|
|
|
|
ASSERT_TRUE(callback1.run);
|
|
ASSERT_TRUE(callback2.run);
|
|
ASSERT_TRUE(callback3.run);
|
|
ASSERT_TRUE(callback4.run);
|
|
}
|
|
|
|
struct State {
|
|
port::Mutex mu;
|
|
port::CondVar cvar{&mu};
|
|
|
|
int val GUARDED_BY(mu);
|
|
int num_running GUARDED_BY(mu);
|
|
|
|
State(int val, int num_running) : val(val), num_running(num_running) {}
|
|
};
|
|
|
|
static void ThreadBody(void* arg) {
|
|
State* s = reinterpret_cast<State*>(arg);
|
|
s->mu.Lock();
|
|
s->val += 1;
|
|
s->num_running -= 1;
|
|
s->cvar.Signal();
|
|
s->mu.Unlock();
|
|
}
|
|
|
|
TEST_F(EnvTest, StartThread) {
|
|
State state(0, 3);
|
|
for (int i = 0; i < 3; i++) {
|
|
env_->StartThread(&ThreadBody, &state);
|
|
}
|
|
|
|
MutexLock l(&state.mu);
|
|
while (state.num_running != 0) {
|
|
state.cvar.Wait();
|
|
}
|
|
ASSERT_EQ(state.val, 3);
|
|
}
|
|
|
|
TEST_F(EnvTest, TestOpenNonExistentFile) {
|
|
// Write some test data to a single file that will be opened |n| times.
|
|
std::string test_dir;
|
|
ASSERT_LEVELDB_OK(env_->GetTestDirectory(&test_dir));
|
|
|
|
std::string non_existent_file = test_dir + "/non_existent_file";
|
|
ASSERT_TRUE(!env_->FileExists(non_existent_file));
|
|
|
|
RandomAccessFile* random_access_file;
|
|
Status status =
|
|
env_->NewRandomAccessFile(non_existent_file, &random_access_file);
|
|
#if defined(LEVELDB_PLATFORM_CHROMIUM)
|
|
// TODO(crbug.com/760362): See comment in MakeIOError() from env_chromium.cc.
|
|
ASSERT_TRUE(status.IsIOError());
|
|
#else
|
|
ASSERT_TRUE(status.IsNotFound());
|
|
#endif // defined(LEVELDB_PLATFORM_CHROMIUM)
|
|
|
|
SequentialFile* sequential_file;
|
|
status = env_->NewSequentialFile(non_existent_file, &sequential_file);
|
|
#if defined(LEVELDB_PLATFORM_CHROMIUM)
|
|
// TODO(crbug.com/760362): See comment in MakeIOError() from env_chromium.cc.
|
|
ASSERT_TRUE(status.IsIOError());
|
|
#else
|
|
ASSERT_TRUE(status.IsNotFound());
|
|
#endif // defined(LEVELDB_PLATFORM_CHROMIUM)
|
|
}
|
|
|
|
TEST_F(EnvTest, ReopenWritableFile) {
|
|
std::string test_dir;
|
|
ASSERT_LEVELDB_OK(env_->GetTestDirectory(&test_dir));
|
|
std::string test_file_name = test_dir + "/reopen_writable_file.txt";
|
|
env_->RemoveFile(test_file_name);
|
|
|
|
WritableFile* writable_file;
|
|
ASSERT_LEVELDB_OK(env_->NewWritableFile(test_file_name, &writable_file));
|
|
std::string data("hello world!");
|
|
ASSERT_LEVELDB_OK(writable_file->Append(data));
|
|
ASSERT_LEVELDB_OK(writable_file->Close());
|
|
delete writable_file;
|
|
|
|
ASSERT_LEVELDB_OK(env_->NewWritableFile(test_file_name, &writable_file));
|
|
data = "42";
|
|
ASSERT_LEVELDB_OK(writable_file->Append(data));
|
|
ASSERT_LEVELDB_OK(writable_file->Close());
|
|
delete writable_file;
|
|
|
|
ASSERT_LEVELDB_OK(ReadFileToString(env_, test_file_name, &data));
|
|
ASSERT_EQ(std::string("42"), data);
|
|
env_->RemoveFile(test_file_name);
|
|
}
|
|
|
|
TEST_F(EnvTest, ReopenAppendableFile) {
|
|
std::string test_dir;
|
|
ASSERT_LEVELDB_OK(env_->GetTestDirectory(&test_dir));
|
|
std::string test_file_name = test_dir + "/reopen_appendable_file.txt";
|
|
env_->RemoveFile(test_file_name);
|
|
|
|
WritableFile* appendable_file;
|
|
ASSERT_LEVELDB_OK(env_->NewAppendableFile(test_file_name, &appendable_file));
|
|
std::string data("hello world!");
|
|
ASSERT_LEVELDB_OK(appendable_file->Append(data));
|
|
ASSERT_LEVELDB_OK(appendable_file->Close());
|
|
delete appendable_file;
|
|
|
|
ASSERT_LEVELDB_OK(env_->NewAppendableFile(test_file_name, &appendable_file));
|
|
data = "42";
|
|
ASSERT_LEVELDB_OK(appendable_file->Append(data));
|
|
ASSERT_LEVELDB_OK(appendable_file->Close());
|
|
delete appendable_file;
|
|
|
|
ASSERT_LEVELDB_OK(ReadFileToString(env_, test_file_name, &data));
|
|
ASSERT_EQ(std::string("hello world!42"), data);
|
|
env_->RemoveFile(test_file_name);
|
|
}
|
|
|
|
} // namespace leveldb
|