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.
223 lignes
6.2 KiB
223 lignes
6.2 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 "port/port.h"
|
|
#include "util/testharness.h"
|
|
#include "util/testutil.h"
|
|
|
|
namespace leveldb {
|
|
|
|
static const int kDelayMicros = 100000;
|
|
static const int kReadOnlyFileLimit = 4;
|
|
static const int kMMapLimit = 4;
|
|
|
|
class EnvTest {
|
|
private:
|
|
port::Mutex mu_;
|
|
std::string events_;
|
|
|
|
public:
|
|
Env* env_;
|
|
EnvTest() : env_(Env::Default()) { }
|
|
};
|
|
|
|
static void SetBool(void* ptr) {
|
|
reinterpret_cast<port::AtomicPointer*>(ptr)->NoBarrier_Store(ptr);
|
|
}
|
|
|
|
|
|
TEST(EnvTest, ReadWrite) {
|
|
Random rnd(test::RandomSeed());
|
|
|
|
// Get file to use for testing.
|
|
std::string test_dir;
|
|
ASSERT_OK(env_->GetTestDirectory(&test_dir));
|
|
std::string test_file_name = test_dir + "/open_on_read.txt";
|
|
WritableFile* writable_file;
|
|
ASSERT_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_OK(writable_file->Append(r));
|
|
data += r;
|
|
if (rnd.OneIn(10)) {
|
|
ASSERT_OK(writable_file->Flush());
|
|
}
|
|
}
|
|
ASSERT_OK(writable_file->Sync());
|
|
ASSERT_OK(writable_file->Close());
|
|
delete writable_file;
|
|
|
|
// Read all data using a sequence of randomly sized reads.
|
|
SequentialFile* sequential_file;
|
|
ASSERT_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_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(EnvTest, RunImmediately) {
|
|
port::AtomicPointer called (NULL);
|
|
env_->Schedule(&SetBool, &called);
|
|
env_->SleepForMicroseconds(kDelayMicros);
|
|
ASSERT_TRUE(called.NoBarrier_Load() != NULL);
|
|
}
|
|
|
|
TEST(EnvTest, RunMany) {
|
|
port::AtomicPointer last_id (NULL);
|
|
|
|
struct CB {
|
|
port::AtomicPointer* last_id_ptr; // Pointer to shared slot
|
|
uintptr_t id; // Order# for the execution of this callback
|
|
|
|
CB(port::AtomicPointer* p, int i) : last_id_ptr(p), id(i) { }
|
|
|
|
static void Run(void* v) {
|
|
CB* cb = reinterpret_cast<CB*>(v);
|
|
void* cur = cb->last_id_ptr->NoBarrier_Load();
|
|
ASSERT_EQ(cb->id-1, reinterpret_cast<uintptr_t>(cur));
|
|
cb->last_id_ptr->Release_Store(reinterpret_cast<void*>(cb->id));
|
|
}
|
|
};
|
|
|
|
// Schedule in different order than start time
|
|
CB cb1(&last_id, 1);
|
|
CB cb2(&last_id, 2);
|
|
CB cb3(&last_id, 3);
|
|
CB cb4(&last_id, 4);
|
|
env_->Schedule(&CB::Run, &cb1);
|
|
env_->Schedule(&CB::Run, &cb2);
|
|
env_->Schedule(&CB::Run, &cb3);
|
|
env_->Schedule(&CB::Run, &cb4);
|
|
|
|
env_->SleepForMicroseconds(kDelayMicros);
|
|
void* cur = last_id.Acquire_Load();
|
|
ASSERT_EQ(4, reinterpret_cast<uintptr_t>(cur));
|
|
}
|
|
|
|
struct State {
|
|
port::Mutex mu;
|
|
int val;
|
|
int num_running;
|
|
};
|
|
|
|
static void ThreadBody(void* arg) {
|
|
State* s = reinterpret_cast<State*>(arg);
|
|
s->mu.Lock();
|
|
s->val += 1;
|
|
s->num_running -= 1;
|
|
s->mu.Unlock();
|
|
}
|
|
|
|
TEST(EnvTest, StartThread) {
|
|
State state;
|
|
state.val = 0;
|
|
state.num_running = 3;
|
|
for (int i = 0; i < 3; i++) {
|
|
env_->StartThread(&ThreadBody, &state);
|
|
}
|
|
while (true) {
|
|
state.mu.Lock();
|
|
int num = state.num_running;
|
|
state.mu.Unlock();
|
|
if (num == 0) {
|
|
break;
|
|
}
|
|
env_->SleepForMicroseconds(kDelayMicros);
|
|
}
|
|
ASSERT_EQ(state.val, 3);
|
|
}
|
|
|
|
TEST(EnvTest, TestOpenNonExistentFile) {
|
|
// Write some test data to a single file that will be opened |n| times.
|
|
std::string test_dir;
|
|
ASSERT_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);
|
|
ASSERT_TRUE(status.IsNotFound());
|
|
|
|
SequentialFile* sequential_file;
|
|
status = env_->NewSequentialFile(non_existent_file, &sequential_file);
|
|
ASSERT_TRUE(status.IsNotFound());
|
|
}
|
|
|
|
TEST(EnvTest, ReopenWritableFile) {
|
|
std::string test_dir;
|
|
ASSERT_OK(env_->GetTestDirectory(&test_dir));
|
|
std::string test_file_name = test_dir + "/reopen_writable_file.txt";
|
|
env_->DeleteFile(test_file_name);
|
|
|
|
WritableFile* writable_file;
|
|
ASSERT_OK(env_->NewWritableFile(test_file_name, &writable_file));
|
|
std::string data("hello world!");
|
|
ASSERT_OK(writable_file->Append(data));
|
|
ASSERT_OK(writable_file->Close());
|
|
delete writable_file;
|
|
|
|
ASSERT_OK(env_->NewWritableFile(test_file_name, &writable_file));
|
|
data = "42";
|
|
ASSERT_OK(writable_file->Append(data));
|
|
ASSERT_OK(writable_file->Close());
|
|
delete writable_file;
|
|
|
|
ASSERT_OK(ReadFileToString(env_, test_file_name, &data));
|
|
ASSERT_EQ(std::string("42"), data);
|
|
env_->DeleteFile(test_file_name);
|
|
}
|
|
|
|
TEST(EnvTest, ReopenAppendableFile) {
|
|
std::string test_dir;
|
|
ASSERT_OK(env_->GetTestDirectory(&test_dir));
|
|
std::string test_file_name = test_dir + "/reopen_appendable_file.txt";
|
|
env_->DeleteFile(test_file_name);
|
|
|
|
WritableFile* appendable_file;
|
|
ASSERT_OK(env_->NewAppendableFile(test_file_name, &appendable_file));
|
|
std::string data("hello world!");
|
|
ASSERT_OK(appendable_file->Append(data));
|
|
ASSERT_OK(appendable_file->Close());
|
|
delete appendable_file;
|
|
|
|
ASSERT_OK(env_->NewAppendableFile(test_file_name, &appendable_file));
|
|
data = "42";
|
|
ASSERT_OK(appendable_file->Append(data));
|
|
ASSERT_OK(appendable_file->Close());
|
|
delete appendable_file;
|
|
|
|
ASSERT_OK(ReadFileToString(env_, test_file_name, &data));
|
|
ASSERT_EQ(std::string("hello world!42"), data);
|
|
env_->DeleteFile(test_file_name);
|
|
}
|
|
|
|
} // namespace leveldb
|
|
|
|
int main(int argc, char** argv) {
|
|
return leveldb::test::RunAllTests();
|
|
}
|