context_prototypes.h

// Start of context_prototypes.h
//
// Prototypes for the functions in context.h, or that will be called
// from those functions, that need to be available very early.

struct futhark_context_config;
struct futhark_context;

static void set_error(struct futhark_context* ctx, char *error);

// These are called in context/config new/free functions and contain
// shared setup.  They are generated by the compiler itself.
static int init_constants(struct futhark_context*);
static int free_constants(struct futhark_context*);
static void setup_program(struct futhark_context* ctx);
static void teardown_program(struct futhark_context *ctx);

// Allocate host memory.  Must be freed with host_free().
static void host_alloc(struct futhark_context* ctx, size_t size, const char* tag, size_t* size_out, void** mem_out);
// Allocate memory allocated with host_alloc().
static void host_free(struct futhark_context* ctx, size_t size, const char* tag, void* mem);

// Log that a copy has occurred.
static void log_copy(struct futhark_context* ctx,
                     const char *kind, int r,
                     int64_t dst_offset, int64_t dst_strides[r],
                     int64_t src_offset, int64_t src_strides[r],
                     int64_t shape[r]);

static void log_transpose(struct futhark_context* ctx,
                          int64_t k, int64_t m, int64_t n);

static bool lmad_map_tr(int64_t *num_arrays_out, int64_t *n_out, int64_t *m_out,
                        int r,
                        const int64_t dst_strides[r],
                        const int64_t src_strides[r],
                        const int64_t shape[r]);

static bool lmad_contiguous(int r, int64_t strides[r], int64_t shape[r]);

static bool lmad_memcpyable(int r,
                            int64_t dst_strides[r], int64_t src_strides[r], int64_t shape[r]);

// Functions that must be defined by the backend.
static void backend_context_config_setup(struct futhark_context_config* cfg);
static void backend_context_config_teardown(struct futhark_context_config* cfg);
static int backend_context_setup(struct futhark_context *ctx);
static void backend_context_teardown(struct futhark_context *ctx);

// End of of context_prototypes.h