[Olena-patches] r2925: Clean and Fix tiled_image2d

URL: https://svn.lrde.epita.fr/svn/oln/trunk/milena/sandbox ChangeLog: 2008-11-19 Matthieu Garrigues &lt;garrigues(a)lrde.epita.fr&gt; Clean and Fix tiled_image2d. * garrigues/tiled_image2d/backend/mmap.hh, * garrigues/tiled_image2d/tiled_image2d.cc, * garrigues/tiled_image2d/tiled_image2d.hh: Use a lru cache of size 10 instead of 1500. --- backend/mmap.hh | 7 +++++-- tiled_image2d.cc | 6 +++--- tiled_image2d.hh | 16 ++++++++++------ 3 files changed, 18 insertions(+), 11 deletions(-) Index: trunk/milena/sandbox/garrigues/tiled_image2d/backend/mmap.hh =================================================================== --- trunk/milena/sandbox/garrigues/tiled_image2d/backend/mmap.hh (revision 2924) +++ trunk/milena/sandbox/garrigues/tiled_image2d/backend/mmap.hh (revision 2925) @@ -42,8 +42,8 @@ typedef Block block_type; mmap_backend(int fd, unsigned n_blocks) - : fd_(fd), size_(n_blocks) { - + : fd_(fd), size_(n_blocks), n_loaded_(0) { + std::cout << "size: " << size_ << "blocks." << std::endl; assert(Block::nbytes % getpagesize() == 0); if (fd == -1) { perror("open"); exit(1); } assert(fd_ != -1); @@ -97,6 +97,7 @@ assert(n < size_); Block *b = loaded_[n]; loaded_[n] = 0; + n_loaded_--; if (munmap(b->bytes, Block::nbytes) == -1) perror("munmap"); } @@ -105,6 +106,7 @@ assert(n < size_); Block *b = loaded_[n]; if (!b) { + n_loaded_++; b = (Block*) mmap(0, Block::nbytes, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED, fd_, n * Block::nbytes); if (b == (void*)-1) perror("mmap"); @@ -117,6 +119,7 @@ Block** loaded_; int fd_; unsigned size_; + int n_loaded_; }; Index: trunk/milena/sandbox/garrigues/tiled_image2d/tiled_image2d.hh =================================================================== --- trunk/milena/sandbox/garrigues/tiled_image2d/tiled_image2d.hh (revision 2924) +++ trunk/milena/sandbox/garrigues/tiled_image2d/tiled_image2d.hh (revision 2925) @@ -72,10 +72,10 @@ template <typename T> struct data_< tiled_image2d<T> > { - typedef block<T, BLOCK_SIZE> block; - typedef mmap_backend<block> backend; - typedef lru_support<backend> support; - typedef layout2d<BLOCK_SIDE, BLOCK_SIDE> layout; + typedef typename tiled_image2d<T>::block block; + typedef typename tiled_image2d<T>::backend backend; + typedef typename tiled_image2d<T>::support support; + typedef typename tiled_image2d<T>::layout layout; data_(const box2d& b); ~data_(); @@ -154,9 +154,13 @@ /// Block type. typedef block<T, BLOCK_SIZE> block; + //typedef block<T, 10> block; + + /// Backend type. + typedef mmap_backend<block> backend; /// Support type. - typedef lru_support<mmap_backend<block> > support; + typedef lru_support<backend> support; /// Layout type typedef layout2d<BLOCK_SIDE, BLOCK_SIDE> layout; /// Page type @@ -245,7 +249,7 @@ support_(*new support( *new backend( open("/tmp/milena_tiled.image", O_RDWR | O_CREAT | O_TRUNC, 0664), layout::image_layout::size(geom::nrows(b), geom::ncols(b))), - 1500 // Fixme : size of lru cache. + 10 // Fixme : size of lru cache. ) ) { Index: trunk/milena/sandbox/garrigues/tiled_image2d/tiled_image2d.cc =================================================================== --- trunk/milena/sandbox/garrigues/tiled_image2d/tiled_image2d.cc (revision 2924) +++ trunk/milena/sandbox/garrigues/tiled_image2d/tiled_image2d.cc (revision 2925) @@ -45,10 +45,10 @@ using namespace mln; std::cout << "allocate the image." << std::endl; - tiled_image2d<value::int_u8> ima(1024 * 1024, 1024 * 1.5); + tiled_image2d<value::int_u8> ima(30000, 30024); std::cout << "fill the image." << std::endl; debug::iota(ima); - std::cout << "save the image." << std::endl; - io::pgm::save(ima, "test.pgm"); + //std::cout << "save the image." << std::endl; + //io::pgm::save(ima, "/tmp/test.pgm"); }