diff options
| author | elupus <elupus@xbmc.org> | 2011-03-24 23:33:29 +0100 |
|---|---|---|
| committer | elupus <elupus@xbmc.org> | 2011-03-25 20:04:27 +0100 |
| commit | 93e3ecf95be0d2eeea6254e0f98a7f47e4efc691 (patch) | |
| tree | 126ad2f8da4b2dbb0fb01f3acb9974b6d04ae9f3 | |
| parent | 580387f0eb9541246e20d236adf0e0c5348f5bc1 (diff) | |
added: allocate the file cache buffer as a memory mapped file in system page file
This allows allocation of quite large buffers for for the CFileCache without physically using that much system memory. The cached data will be paged out on need.
| -rw-r--r-- | xbmc/filesystem/CacheCircular.cpp | 18 | ||||
| -rw-r--r-- | xbmc/filesystem/CacheCircular.h | 3 |
2 files changed, 21 insertions, 0 deletions
diff --git a/xbmc/filesystem/CacheCircular.cpp b/xbmc/filesystem/CacheCircular.cpp index 6f656e335c..3e446963c0 100644 --- a/xbmc/filesystem/CacheCircular.cpp +++ b/xbmc/filesystem/CacheCircular.cpp @@ -35,6 +35,9 @@ CCacheCircular::CCacheCircular(size_t front, size_t back) , m_buf(NULL) , m_size(front + back) , m_size_back(back) +#ifdef _WIN32 + , m_handle(INVALID_HANDLE_VALUE) +#endif { } @@ -45,7 +48,16 @@ CCacheCircular::~CCacheCircular() int CCacheCircular::Open() { +#ifdef _WIN32 + m_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, m_size, NULL); + if(m_handle == INVALID_HANDLE_VALUE) + return CACHE_RC_ERROR; + m_buf = (uint8_t*)MapViewOfFile(m_handle, FILE_MAP_ALL_ACCESS, 0, 0, 0); +#else m_buf = new uint8_t[m_size]; +#endif + if(m_buf == 0) + return CACHE_RC_ERROR; m_beg = 0; m_end = 0; m_cur = 0; @@ -54,7 +66,13 @@ int CCacheCircular::Open() int CCacheCircular::Close() { +#ifdef _WIN32 + UnmapViewOfFile(m_buf); + CloseHandle(m_handle); + m_handle = INVALID_HANDLE_VALUE; +#else delete[] m_buf; +#endif m_buf = NULL; return CACHE_RC_OK; } diff --git a/xbmc/filesystem/CacheCircular.h b/xbmc/filesystem/CacheCircular.h index c841552828..b27db704a9 100644 --- a/xbmc/filesystem/CacheCircular.h +++ b/xbmc/filesystem/CacheCircular.h @@ -53,6 +53,9 @@ protected: size_t m_size_back; CCriticalSection m_sync; CEvent m_written; +#ifdef _WIN32 + HANDLE m_handle; +#endif }; } // namespace XFILE |