LCOV - code coverage report
Current view: top level - src/leveldb/port - port_posix.h (source / functions) Hit Total Coverage
Test: total_coverage.info Lines: 0 7 0.0 %
Date: 2015-10-12 22:39:14 Functions: 0 4 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file. See the AUTHORS file for names of contributors.
       4             : //
       5             : // See port_example.h for documentation for the following types/functions.
       6             : 
       7             : #ifndef STORAGE_LEVELDB_PORT_PORT_POSIX_H_
       8             : #define STORAGE_LEVELDB_PORT_PORT_POSIX_H_
       9             : 
      10             : #undef PLATFORM_IS_LITTLE_ENDIAN
      11             : #if defined(OS_MACOSX)
      12             :   #include <machine/endian.h>
      13             :   #if defined(__DARWIN_LITTLE_ENDIAN) && defined(__DARWIN_BYTE_ORDER)
      14             :     #define PLATFORM_IS_LITTLE_ENDIAN \
      15             :         (__DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN)
      16             :   #endif
      17             : #elif defined(OS_SOLARIS)
      18             :   #include <sys/isa_defs.h>
      19             :   #ifdef _LITTLE_ENDIAN
      20             :     #define PLATFORM_IS_LITTLE_ENDIAN true
      21             :   #else
      22             :     #define PLATFORM_IS_LITTLE_ENDIAN false
      23             :   #endif
      24             : #elif defined(OS_FREEBSD) || defined(OS_OPENBSD) ||\
      25             :       defined(OS_NETBSD) || defined(OS_DRAGONFLYBSD)
      26             :   #include <sys/types.h>
      27             :   #include <sys/endian.h>
      28             :   #define PLATFORM_IS_LITTLE_ENDIAN (_BYTE_ORDER == _LITTLE_ENDIAN)
      29             : #elif defined(OS_HPUX)
      30             :   #define PLATFORM_IS_LITTLE_ENDIAN false
      31             : #elif defined(OS_ANDROID)
      32             :   // Due to a bug in the NDK x86 <sys/endian.h> definition,
      33             :   // _BYTE_ORDER must be used instead of __BYTE_ORDER on Android.
      34             :   // See http://code.google.com/p/android/issues/detail?id=39824
      35             :   #include <endian.h>
      36             :   #define PLATFORM_IS_LITTLE_ENDIAN  (_BYTE_ORDER == _LITTLE_ENDIAN)
      37             : #else
      38             :   #include <endian.h>
      39             : #endif
      40             : 
      41             : #include <pthread.h>
      42             : #ifdef SNAPPY
      43             : #include <snappy.h>
      44             : #endif
      45             : #include <stdint.h>
      46             : #include <string>
      47             : #include "port/atomic_pointer.h"
      48             : 
      49             : #ifndef PLATFORM_IS_LITTLE_ENDIAN
      50             : #define PLATFORM_IS_LITTLE_ENDIAN (__BYTE_ORDER == __LITTLE_ENDIAN)
      51             : #endif
      52             : 
      53             : #if defined(OS_MACOSX) || defined(OS_SOLARIS) || defined(OS_FREEBSD) ||\
      54             :     defined(OS_NETBSD) || defined(OS_OPENBSD) || defined(OS_DRAGONFLYBSD) ||\
      55             :     defined(OS_ANDROID) || defined(OS_HPUX) || defined(CYGWIN)
      56             : // Use fread/fwrite/fflush on platforms without _unlocked variants
      57             : #define fread_unlocked fread
      58             : #define fwrite_unlocked fwrite
      59             : #define fflush_unlocked fflush
      60             : #endif
      61             : 
      62             : #if defined(OS_FREEBSD) ||\
      63             :     defined(OS_OPENBSD) || defined(OS_DRAGONFLYBSD)
      64             : // Use fsync() on platforms without fdatasync()
      65             : #define fdatasync fsync
      66             : #endif
      67             : 
      68             : #if defined(OS_MACOSX)
      69             : #define fdatasync(fd) fcntl(fd, F_FULLFSYNC, 0)
      70             : #endif
      71             : 
      72             : #if defined(OS_ANDROID) && __ANDROID_API__ < 9
      73             : // fdatasync() was only introduced in API level 9 on Android. Use fsync()
      74             : // when targetting older platforms.
      75             : #define fdatasync fsync
      76             : #endif
      77             : 
      78             : namespace leveldb {
      79             : namespace port {
      80             : 
      81             : static const bool kLittleEndian = PLATFORM_IS_LITTLE_ENDIAN;
      82             : #undef PLATFORM_IS_LITTLE_ENDIAN
      83             : 
      84             : class CondVar;
      85             : 
      86             : class Mutex {
      87             :  public:
      88             :   Mutex();
      89             :   ~Mutex();
      90             : 
      91             :   void Lock();
      92             :   void Unlock();
      93           0 :   void AssertHeld() { }
      94             : 
      95             :  private:
      96             :   friend class CondVar;
      97             :   pthread_mutex_t mu_;
      98             : 
      99             :   // No copying
     100             :   Mutex(const Mutex&);
     101             :   void operator=(const Mutex&);
     102             : };
     103             : 
     104             : class CondVar {
     105             :  public:
     106             :   explicit CondVar(Mutex* mu);
     107             :   ~CondVar();
     108             :   void Wait();
     109             :   void Signal();
     110             :   void SignalAll();
     111             :  private:
     112             :   pthread_cond_t cv_;
     113             :   Mutex* mu_;
     114             : };
     115             : 
     116             : typedef pthread_once_t OnceType;
     117             : #define LEVELDB_ONCE_INIT PTHREAD_ONCE_INIT
     118             : extern void InitOnce(OnceType* once, void (*initializer)());
     119             : 
     120           0 : inline bool Snappy_Compress(const char* input, size_t length,
     121             :                             ::std::string* output) {
     122             : #ifdef SNAPPY
     123             :   output->resize(snappy::MaxCompressedLength(length));
     124             :   size_t outlen;
     125             :   snappy::RawCompress(input, length, &(*output)[0], &outlen);
     126             :   output->resize(outlen);
     127             :   return true;
     128             : #endif
     129             : 
     130           0 :   return false;
     131             : }
     132             : 
     133           0 : inline bool Snappy_GetUncompressedLength(const char* input, size_t length,
     134             :                                          size_t* result) {
     135             : #ifdef SNAPPY
     136             :   return snappy::GetUncompressedLength(input, length, result);
     137             : #else
     138           0 :   return false;
     139             : #endif
     140             : }
     141             : 
     142           0 : inline bool Snappy_Uncompress(const char* input, size_t length,
     143             :                               char* output) {
     144             : #ifdef SNAPPY
     145             :   return snappy::RawUncompress(input, length, output);
     146             : #else
     147           0 :   return false;
     148             : #endif
     149             : }
     150             : 
     151             : inline bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg) {
     152             :   return false;
     153             : }
     154             : 
     155             : } // namespace port
     156             : } // namespace leveldb
     157             : 
     158             : #endif  // STORAGE_LEVELDB_PORT_PORT_POSIX_H_

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