void shm_destroy_context(shm_context_t *context)
{
iterator_t it = iterator_create(context->phys_pages);
list_set_first(&it);
while( ! list_is_last(&it) )
{
void *addr = list_get_current(&it);
pmm_mark_page_as_free(addr);
list_next(&it);
}
free(context);
}
void *shm_attach(vmm_context_t *vmm_context, shm_context_t *shm_context, uintptr_t offset)
{
if(offset >= shm_context->size)
return -1;
uintptr_t base = 0xB0000000; /* TODO */
uintptr_t start = (base + offset) & PAGE_MASK;
iterator_t it = iterator_create(shm_context->phys_pages);
list_set_first(&it);
int i = 0;
while( ! list_is_last(&it) )
{
vaddr_t vaddr = start + i * PAGE_SIZE;
paddr_t paddr = list_get_current(&it);
vmm_map(vmm_context, paddr, vaddr, VMM_PRESENT | VMM_WRITABLE | VMM_USER);
i++;
}
return start;
}
iterator_t mpi_file_ntriples_node_iterator_create(MPI_File file, MPI_Offset start, MPI_Offset amount, size_t bufsize, MPI_Comm comm) {
_mpi_file_ntriples_node_iterator_state_t state = malloc(sizeof(_mpi_file_ntriples_node_iterator_state_type));
if(state == NULL) {
fprintf(stderr, "%s:%u: Error in mpi_file_ntriples_node_iterator_create; unable to allocate %u bytes for internal state.\n", __FILE__, __LINE__, sizeof(_mpi_file_ntriples_node_iterator_state_type));
return NULL;
}
state->ntriple = NULL;
state->mark = NULL;
state->part = _MPI_FILE_NTRIPLES_NODE_ITERATOR_SUBJECT;
state->iter = mpi_file_ntriples_iterator_create(file, start, amount, bufsize, comm);
if(state->iter == NULL) {
fprintf(stderr, "%s:%u: Error in mpi_file_ntriples_node_iterator_create; unable to allocate underlying iterator.\n", __FILE__, __LINE__);
free(state);
return NULL;
}
iterator_t iter = iterator_create(&_mpi_file_ntriples_node_iterator_has_next, &_mpi_file_ntriples_node_iterator_next, &_mpi_file_ntriples_node_iterator_destroy, state);
if(iter == NULL) {
fprintf(stderr, "%s:%u: Error in mpi_file_ntriples_node_iterator_create; unable to allocate iterator.\n", __FILE__, __LINE__);
iterator_destroy(state->iter);
free(state);
}
return iter;
}
iterator_t *array_iterator(array_t *array)
{
iterator_t *iterator = iterator_create(array_iteratorNextObject, array);
return iterator;
}
