Du kan inte välja fler än 25 ämnen
Ämnen måste starta med en bokstav eller siffra, kan innehålla bindestreck ('-') och vara max 35 tecken långa.
104 rader
2.6 KiB
104 rader
2.6 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.
|
|
//
|
|
// See port_example.h for documentation for the following types/functions.
|
|
|
|
#ifndef STORAGE_LEVELDB_PORT_PORT_CHROMIUM_H_
|
|
#define STORAGE_LEVELDB_PORT_PORT_CHROMIUM_H_
|
|
|
|
#include <stdint.h>
|
|
#include <string>
|
|
#include <cstring>
|
|
#include "base/atomicops.h"
|
|
#include "base/basictypes.h"
|
|
#include "base/logging.h"
|
|
#include "base/sha1.h"
|
|
#include "base/synchronization/condition_variable.h"
|
|
#include "base/synchronization/lock.h"
|
|
|
|
// Linux's ThreadIdentifier() needs this.
|
|
#if defined(OS_LINUX)
|
|
# include <linux/unistd.h>
|
|
#endif
|
|
|
|
#if defined(OS_WIN)
|
|
#define snprintf _snprintf
|
|
#define va_copy(a, b) do { (a) = (b); } while (0)
|
|
#endif
|
|
|
|
namespace leveldb {
|
|
namespace port {
|
|
|
|
// Chromium only supports little endian.
|
|
static const bool kLittleEndian = true;
|
|
|
|
class Mutex {
|
|
public:
|
|
Mutex();
|
|
~Mutex();
|
|
void Lock();
|
|
void Unlock();
|
|
void AssertHeld();
|
|
|
|
private:
|
|
base::Lock mu_;
|
|
|
|
friend class CondVar;
|
|
DISALLOW_COPY_AND_ASSIGN(Mutex);
|
|
};
|
|
|
|
class CondVar {
|
|
public:
|
|
explicit CondVar(Mutex* mu);
|
|
~CondVar();
|
|
void Wait();
|
|
void Signal();
|
|
void SignalAll();
|
|
|
|
private:
|
|
base::ConditionVariable cv_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(CondVar);
|
|
};
|
|
|
|
class AtomicPointer {
|
|
private:
|
|
typedef base::subtle::AtomicWord Rep;
|
|
Rep rep_;
|
|
public:
|
|
AtomicPointer() { }
|
|
explicit AtomicPointer(void* p) : rep_(reinterpret_cast<Rep>(p)) {}
|
|
inline void* Acquire_Load() const {
|
|
return reinterpret_cast<void*>(::base::subtle::Acquire_Load(&rep_));
|
|
}
|
|
inline void Release_Store(void* v) {
|
|
::base::subtle::Release_Store(&rep_, reinterpret_cast<Rep>(v));
|
|
}
|
|
inline void* NoBarrier_Load() const {
|
|
return reinterpret_cast<void*>(::base::subtle::NoBarrier_Load(&rep_));
|
|
}
|
|
inline void NoBarrier_Store(void* v) {
|
|
::base::subtle::NoBarrier_Store(&rep_, reinterpret_cast<Rep>(v));
|
|
}
|
|
};
|
|
|
|
inline void SHA1_Hash(const char* data, size_t len, char* hash_array) {
|
|
return ::base::SHA1HashBytes(reinterpret_cast<const unsigned char*>(data),
|
|
len,
|
|
reinterpret_cast<unsigned char*>(hash_array));
|
|
}
|
|
|
|
bool Snappy_Compress(const char* input, size_t input_length,
|
|
std::string* output);
|
|
bool Snappy_Uncompress(const char* input_data, size_t input_length,
|
|
std::string* output);
|
|
|
|
inline bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg) {
|
|
return false;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif // STORAGE_LEVELDB_PORT_PORT_CHROMIUM_H_
|