taeguk

git filter-branch --env-filter 'export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"'

taeguk

Process Context : context of kernel flow through system call of user process
Interrupt Context : context of kernel flow through interrupt by I/O devices.

Kernel Control Flow
 - Process Context (by system call)
 - Interrupt Context (by interrupt)
 
 kmalloc GFP_KERNEL
 sleep 
 

taeguk

hpx::future<std::uint64_t> fibonacci(std::uint64_t n, std::string prefix)
{
    if (n < 2) return hpx::make_ready_future(n);
    if (n < threshold) return hpx::make_ready_future(fibonacci_serial(n));

	auto new_prefix = prefix + "->" + std::to_string(n);
	std::cout << "[Debug] " << new_prefix << std::endl;

    hpx::future<std::uint64_t> lhs_future = hpx::async(&fibonacci, n-1, new_prefix);
	hpx::future<std::uint64_t> rhs_future = fibonacci(n - 2, new_prefix);

taeguk

hpx::future<std::uint64_t> fibonacci(std::uint64_t n, std::string prefix)
{
    if (n < 2) return hpx::make_ready_future(n);
    if (n < threshold) return hpx::make_ready_future(fibonacci_serial(n));

	auto new_prefix = prefix + "->" + std::to_string(n);
	std::cout << "[Debug] " << new_prefix << std::endl;

    hpx::future<std::uint64_t> lhs_future = hpx::async(&fibonacci, n-1, new_prefix);
	for (int i = 0; i < 1000000000; ++i) int j = i*i;

taeguk

[tkwon@bob1 hpx_build]$ make clean

[tkwon@bob1 hpx_build]$ 
[tkwon@bob1 hpx_build]$ make -j8 examples.quickstart.fibonacci_futures
[  0%] Building CXX object src/CMakeFiles/hpx_init.dir/hpx_main.cpp.o
[  0%] Building CXX object src/CMakeFiles/hpx_init.dir/hpx_main_argc_argv.cpp.o
[  0%] Building CXX object src/CMakeFiles/hpx_init.dir/hpx_main_winsocket.cpp.o
[  0%] Building CXX object src/CMakeFiles/hpx_init.dir/hpx_main_variables_map.cpp.o
[  0%] Building CXX object src/CMakeFiles/hpx_init.dir/hpx_user_main.cpp.o
[  0%] Building CXX object src/CMakeFiles/hpx_init.dir/hpx_user_main_argc_argv.cpp.o

taeguk

[tkwon@bob1 hpx_build]$ time ctest -R tests.unit.parallel
Test project /home/tkwon/hpx_build
        Start 317: tests.unit.parallel.spmd_block
  1/178 Test #317: tests.unit.parallel.spmd_block ..........................***Failed    0.04 sec
        Start 318: tests.unit.parallel.task_block
  2/178 Test #318: tests.unit.parallel.task_block ..........................***Failed    0.04 sec
        Start 319: tests.unit.parallel.task_block_executor
  3/178 Test #319: tests.unit.parallel.task_block_executor .................***Failed    0.06 sec
        Start 320: tests.unit.parallel.task_block_par
  4/178 Test #320: tests.unit.parallel.task_block_par ......................***Failed    0.06 sec

taeguk

Check Box
---------------
 - [x] implementation of is_heap.
 - [x] unit tests for is_heap.
 - [x] implementation of is_heap_until.
 - [x] unit tests for is_heap_until.
 - [ ] benchmark codes for is_heap.
 - [ ] benchmark codes for is_heap_until.
 - [ ] benchmark for is_heap_until.

taeguk

// Added by taeguk.
static void fb_fake_for_taeguk(private_handle_t const* hnd, private_module_t* m)
{
    static int called_cnt = 0;
    int width  = m->info.xres;  
    int height = m->info.yres;  
    int bpp = m->info.bits_per_pixel / 8;  
    int xoffset = m->info.xoffset;  
    int yoffset = m->info.yoffset;

taeguk

// Added by taeguk.
static void fb_fake_for_taeguk(private_handle_t const* hnd, private_module_t* m)
{
    static int called_cnt = 0;
    int width  = m->info.xres;  
    int height = m->info.yres;  
    int bpp = m->info.bits_per_pixel / 8;  
    int xoffset = m->info.xoffset;  
    int yoffset = m->info.yoffset;

taeguk

static volatile int taeguk = 0;

// Added by taeguk.
static void fb_fake_for_taeguk(char* fb_ptr/*private_handle_t const* hnd*/, private_module_t* m)
{
    static int called_cnt = 0;
    int width  = m->info.xres;  
    int height = m->info.yres;  
    int bpp = m->info.bits_per_pixel / 8;