This source file includes following definitions.
- new_buffer
- new_command_queue
- new_command_buffer
- add_command_buffer_completed_handler
- command_buffer_error
- new_compute_command_encoder
- new_blit_command_encoder
- new_compute_pipeline_state_with_function
- set_compute_pipeline_state
- end_encoding
- did_modify_range
- synchronize_resource
- is_buffer_managed
- end_encoding
- new_library_with_source
- new_function_with_name
- set_input_buffer
- set_threadgroup_memory_length
- commit_command_buffer
- wait_until_completed
- buffer_contents
- halide_metal_acquire_context
- halide_metal_release_context
- save
- restore
- command_buffer_completed_handler_invoke
- halide_metal_device_malloc
- halide_metal_device_free
- halide_metal_initialize_kernels
- halide_metal_device_sync_internal
- halide_metal_device_sync
- halide_metal_device_release
- halide_metal_copy_to_device
- halide_metal_copy_to_host
- halide_metal_run
- halide_metal_device_and_host_malloc
- halide_metal_device_and_host_free
- halide_metal_wrap_buffer
- halide_metal_detach_buffer
- halide_metal_get_buffer
- halide_metal_device_interface
- halide_metal_cleanup
#include "HalideRuntimeMetal.h"
#include "scoped_spin_lock.h"
#include "device_buffer_utils.h"
#include "device_interface.h"
#include "printer.h"
#include "objc_support.h"
#include "metal_objc_platform_dependent.h"
extern "C" {
extern objc_id MTLCreateSystemDefaultDevice();
extern struct ObjectiveCClass _NSConcreteGlobalBlock;
}
namespace Halide { namespace Runtime { namespace Internal { namespace Metal {
typedef halide_metal_device mtl_device;
typedef halide_metal_command_queue mtl_command_queue;
struct mtl_buffer;
struct mtl_command_buffer;
struct mtl_compute_command_encoder;
struct mtl_blit_command_encoder;
struct mtl_compute_pipeline_state;
struct mtl_library;
struct mtl_function;
struct mtl_compile_options;
WEAK mtl_buffer *new_buffer(mtl_device *device, size_t length) {
typedef mtl_buffer *(*new_buffer_method)(objc_id device, objc_sel sel, size_t length, size_t options);
new_buffer_method method = (new_buffer_method)&objc_msgSend;
return (*method)(device, sel_getUid("newBufferWithLength:options:"),
length, 0 );
}
WEAK mtl_command_queue *new_command_queue(mtl_device *device) {
return (mtl_command_queue *)objc_msgSend(device, sel_getUid("newCommandQueue"));
}
WEAK mtl_command_buffer *new_command_buffer(mtl_command_queue *queue) {
return (mtl_command_buffer *)objc_msgSend(queue, sel_getUid("commandBuffer"));
}
WEAK void add_command_buffer_completed_handler(mtl_command_buffer *command_buffer, struct command_buffer_completed_handler_block_literal *handler) {
typedef void (*add_completed_handler_method)(objc_id command_buffer, objc_sel sel, struct command_buffer_completed_handler_block_literal *handler);
add_completed_handler_method method = (add_completed_handler_method)&objc_msgSend;
(*method)(command_buffer, sel_getUid("addCompletedHandler:"), handler);
}
WEAK objc_id command_buffer_error(mtl_command_buffer *buffer) {
return objc_msgSend(buffer, sel_getUid("error"));
}
WEAK mtl_compute_command_encoder *new_compute_command_encoder(mtl_command_buffer *buffer) {
return (mtl_compute_command_encoder *)objc_msgSend(buffer, sel_getUid("computeCommandEncoder"));
}
WEAK mtl_blit_command_encoder *new_blit_command_encoder(mtl_command_buffer *buffer) {
return (mtl_blit_command_encoder *)objc_msgSend(buffer, sel_getUid("blitCommandEncoder"));
}
WEAK mtl_compute_pipeline_state *new_compute_pipeline_state_with_function(mtl_device *device, mtl_function *function) {
objc_id error_return;
typedef mtl_compute_pipeline_state *(*new_compute_pipeline_state_method)(objc_id device, objc_sel sel,
objc_id function, objc_id *error_return);
new_compute_pipeline_state_method method = (new_compute_pipeline_state_method)&objc_msgSend;
mtl_compute_pipeline_state *result = (*method)(device, sel_getUid("newComputePipelineStateWithFunction:error:"),
function, &error_return);
if (result == NULL) {
ns_log_object(error_return);
}
return result;
}
WEAK void set_compute_pipeline_state(mtl_compute_command_encoder *encoder, mtl_compute_pipeline_state *pipeline_state) {
typedef void (*set_compute_pipeline_state_method)(objc_id encoder, objc_sel sel, objc_id pipeline_state);
set_compute_pipeline_state_method method = (set_compute_pipeline_state_method)&objc_msgSend;
(*method)(encoder, sel_getUid("setComputePipelineState:"), pipeline_state);
}
WEAK void end_encoding(mtl_compute_command_encoder *encoder) {
objc_msgSend(encoder, sel_getUid("endEncoding"));
}
struct NSRange {
size_t location;
size_t length;
};
WEAK void did_modify_range(mtl_buffer *buffer, NSRange range) {
typedef void (*did_modify_range_method)(objc_id obj, objc_sel sel, NSRange range);
did_modify_range_method method = (did_modify_range_method)&objc_msgSend;
(*method)(buffer, sel_getUid("didModifyRange:"), range);
}
WEAK void synchronize_resource(mtl_blit_command_encoder *encoder, mtl_buffer *buffer) {
typedef void (*synchronize_resource_method)(objc_id obj, objc_sel sel, mtl_buffer *buffer);
synchronize_resource_method method = (synchronize_resource_method)&objc_msgSend;
(*method)(encoder, sel_getUid("synchronizeResource:"), buffer);
}
WEAK bool is_buffer_managed(mtl_buffer *buffer) {
typedef bool (*responds_to_selector_method)(objc_id obj, objc_sel sel_1, objc_sel sel_2);
responds_to_selector_method method1 = (responds_to_selector_method)&objc_msgSend;
objc_sel storage_mode_sel = sel_getUid("storageMode");
if ((*method1)(buffer, sel_getUid("respondsToSelector:"), storage_mode_sel)) {
typedef int (*storage_mode_method)(objc_id obj, objc_sel sel);
storage_mode_method method = (storage_mode_method)&objc_msgSend;
int storage_mode = (*method)(buffer, storage_mode_sel);
return storage_mode == 1;
}
return false;
}
WEAK void end_encoding(mtl_blit_command_encoder *encoder) {
objc_msgSend(encoder, sel_getUid("endEncoding"));
}
WEAK mtl_library *new_library_with_source(mtl_device *device, const char *source, size_t source_len) {
objc_id error_return;
objc_id source_str = wrap_string_as_ns_string(source, source_len);
objc_id options = objc_msgSend(objc_getClass("MTLCompileOptions"), sel_getUid("alloc"));
options = objc_msgSend(options, sel_getUid("init"));
typedef void (*set_fast_math_method)(objc_id options, objc_sel sel, uint8_t flag);
set_fast_math_method method1 = (set_fast_math_method)&objc_msgSend;
(*method1)(options, sel_getUid("setFastMathEnabled:"), false);
typedef mtl_library *(*new_library_with_source_method)(objc_id device, objc_sel sel, objc_id source, objc_id options, objc_id *error_return);
new_library_with_source_method method2 = (new_library_with_source_method)&objc_msgSend;
mtl_library *result = (*method2)(device, sel_getUid("newLibraryWithSource:options:error:"),
source_str, options, &error_return);
release_ns_object(options);
release_ns_object(source_str);
if (result == NULL) {
ns_log_object(error_return);
}
return result;
}
WEAK mtl_function *new_function_with_name(mtl_library *library, const char *name, size_t name_len) {
objc_id name_str = wrap_string_as_ns_string(name, name_len);
typedef mtl_function *(*new_function_with_name_method)(objc_id library, objc_sel sel, objc_id name);
new_function_with_name_method method = (new_function_with_name_method)&objc_msgSend;
mtl_function *result = (*method)(library, sel_getUid("newFunctionWithName:"), name_str);
release_ns_object(name_str);
return result;
}
WEAK void set_input_buffer(mtl_compute_command_encoder *encoder, mtl_buffer *input_buffer, uint32_t index) {
typedef void (*set_buffer_method)(objc_id encoder, objc_sel sel,
mtl_buffer *input_buffer, size_t offset, size_t index);
set_buffer_method method = (set_buffer_method)&objc_msgSend;
(*method)(encoder, sel_getUid("setBuffer:offset:atIndex:"),
input_buffer, 0, index);
}
WEAK void set_threadgroup_memory_length(mtl_compute_command_encoder *encoder, uint32_t length, uint32_t index) {
typedef void (*set_threadgroup_memory_length_method)(objc_id encoder, objc_sel sel,
size_t length, size_t index);
set_threadgroup_memory_length_method method = (set_threadgroup_memory_length_method)&objc_msgSend;
(*method)(encoder, sel_getUid("setThreadgroupMemoryLength:atIndex:"),
length, index);
}
WEAK void commit_command_buffer(mtl_command_buffer *buffer) {
objc_msgSend(buffer, sel_getUid("commit"));
}
WEAK void wait_until_completed(mtl_command_buffer *buffer) {
objc_msgSend(buffer, sel_getUid("waitUntilCompleted"));
}
WEAK void *buffer_contents(mtl_buffer *buffer) {
return objc_msgSend(buffer, sel_getUid("contents"));
}
extern WEAK halide_device_interface_t metal_device_interface;
volatile int WEAK thread_lock = 0;
WEAK mtl_device *device;
WEAK mtl_command_queue *queue;
struct module_state {
mtl_library *library;
module_state *next;
};
WEAK module_state *state_list = NULL;
}}}}
using namespace Halide::Runtime::Internal;
using namespace Halide::Runtime::Internal::Metal;
extern "C" {
WEAK int halide_metal_acquire_context(void *user_context, mtl_device **device_ret,
mtl_command_queue **queue_ret, bool create) {
halide_assert(user_context, &thread_lock != NULL);
while (__sync_lock_test_and_set(&thread_lock, 1)) { }
#ifdef DEBUG_RUNTIME
halide_start_clock(user_context);
#endif
if (device == 0 && create) {
debug(user_context) << "Metal - Allocating: MTLCreateSystemDefaultDevice\n";
device = (mtl_device *)MTLCreateSystemDefaultDevice();
if (device == 0) {
error(user_context) << "Metal: cannot allocate system default device.\n";
__sync_lock_release(&thread_lock);
return -1;
}
debug(user_context) << "Metal - Allocating: new_command_queue\n";
queue = new_command_queue(device);
if (queue == 0) {
error(user_context) << "Metal: cannot allocate command queue.\n";
release_ns_object(device);
device = 0;
__sync_lock_release(&thread_lock);
return -1;
}
}
halide_assert(user_context, (device == 0) || (queue != 0));
*device_ret = device;
*queue_ret = queue;
return 0;
}
WEAK int halide_metal_release_context(void *user_context) {
__sync_lock_release(&thread_lock);
return 0;
}
}
namespace Halide { namespace Runtime { namespace Internal { namespace Metal {
class MetalContextHolder {
objc_id pool;
void *user_context;
void save(void *user_context, bool create);
void restore();
public:
mtl_device *device;
mtl_command_queue *queue;
int error;
__attribute__((always_inline)) MetalContextHolder(void *user_context, bool create) { save(user_context, create); }
__attribute__((always_inline)) ~MetalContextHolder() { restore(); }
};
WEAK void MetalContextHolder::save(void *user_context_arg, bool create) {
user_context = user_context_arg;
pool = create_autorelease_pool();
error = halide_metal_acquire_context(user_context, &device, &queue, create);
}
WEAK void MetalContextHolder::restore() {
halide_metal_release_context(user_context);
drain_autorelease_pool(pool);
}
struct command_buffer_completed_handler_block_descriptor_1 {
unsigned long reserved;
unsigned long block_size;
};
struct command_buffer_completed_handler_block_literal {
void *isa;
int flags;
int reserved;
void (*invoke)(command_buffer_completed_handler_block_literal *, mtl_command_buffer *buffer);
struct command_buffer_completed_handler_block_descriptor_1 *descriptor;
};
WEAK command_buffer_completed_handler_block_descriptor_1 command_buffer_completed_handler_descriptor = {
0, sizeof(command_buffer_completed_handler_block_literal)
};
WEAK void command_buffer_completed_handler_invoke(command_buffer_completed_handler_block_literal *block, mtl_command_buffer *buffer) {
objc_id buffer_error = command_buffer_error(buffer);
if (buffer_error != NULL) {
ns_log_object(buffer_error);
release_ns_object(buffer_error);
}
}
WEAK command_buffer_completed_handler_block_literal command_buffer_completed_handler_block = {
&_NSConcreteGlobalBlock,
(1 << 28) | (1 << 29),
0, command_buffer_completed_handler_invoke,
&command_buffer_completed_handler_descriptor
};
}}}}
using namespace Halide::Runtime::Internal::Metal;
extern "C" {
WEAK int halide_metal_device_malloc(void *user_context, halide_buffer_t* buf) {
debug(user_context)
<< "halide_metal_device_malloc (user_context: " << user_context
<< ", buf: " << buf << ")\n";
size_t size = buf->size_in_bytes();
halide_assert(user_context, size != 0);
if (buf->device) {
return 0;
}
for (int i = 0; i < buf->dimensions; i++) {
halide_assert(user_context, buf->dim[i].stride > 0);
}
debug(user_context) << " allocating " << *buf << "\n";
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
MetalContextHolder metal_context(user_context, true);
if (metal_context.error != 0) {
return metal_context.error;
}
mtl_buffer *metal_buf = new_buffer(metal_context.device, size);
if (metal_buf == 0) {
error(user_context) << "Metal: Failed to allocate buffer of size " << (int64_t)size << ".\n";
return -1;
}
buf->device = (uint64_t)metal_buf;
buf->device_interface = &metal_device_interface;
buf->device_interface->use_module();
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << " Time: " << (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
WEAK int halide_metal_device_free(void *user_context, halide_buffer_t* buf) {
debug(user_context) << "halide_metal_device_free called on buf "
<< buf << " device is " << buf->device << "\n";
if (buf->device == 0) {
return 0;
}
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
mtl_buffer *metal_buf = (mtl_buffer *)buf->device;
release_ns_object(metal_buf);
buf->device = 0;
buf->device_interface->release_module();
buf->device_interface = NULL;
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << " Time: " << (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
WEAK int halide_metal_initialize_kernels(void *user_context, void **state_ptr, const char* source, int source_size) {
module_state **state = (module_state**)state_ptr;
if (!(*state)) {
*state = (module_state*)malloc(sizeof(module_state));
(*state)->library = NULL;
(*state)->next = state_list;
state_list = *state;
}
MetalContextHolder metal_context(user_context, true);
if (metal_context.error != 0) {
return metal_context.error;
}
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
if ((*state)->library == 0) {
#ifdef DEBUG_RUNTIME
uint64_t t_before_compile = halide_current_time_ns(user_context);
#endif
debug(user_context) << "Metal - Allocating: new_library_with_source " << (*state)->library << "\n";
(*state)->library = new_library_with_source(metal_context.device, source, source_size);
if ((*state)->library == 0) {
error(user_context) << "Metal: new_library_with_source failed.\n";
return -1;
}
#ifdef DEBUG_RUNTIME
uint64_t t_after_compile = halide_current_time_ns(user_context);
debug(user_context) << "Time for halide_metal_initialize_kernels compilation: " << (t_after_compile - t_before_compile) / 1.0e6 << " ms\n";
#endif
}
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << "Time for halide_metal_initialize_kernels: " << (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
namespace {
inline void halide_metal_device_sync_internal(mtl_command_queue *queue, struct halide_buffer_t *buffer) {
mtl_command_buffer *sync_command_buffer = new_command_buffer(queue);
if (buffer != NULL) {
mtl_buffer *metal_buffer = (mtl_buffer *)buffer->device;
if (is_buffer_managed(metal_buffer)) {
mtl_blit_command_encoder *blit_encoder = new_blit_command_encoder(sync_command_buffer);
synchronize_resource(blit_encoder, metal_buffer);
end_encoding(blit_encoder);
}
}
commit_command_buffer(sync_command_buffer);
wait_until_completed(sync_command_buffer);
}
}
WEAK int halide_metal_device_sync(void *user_context, struct halide_buffer_t *buffer) {
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
MetalContextHolder metal_context(user_context, true);
if (metal_context.error != 0) {
return metal_context.error;
}
halide_metal_device_sync_internal(metal_context.queue, buffer);
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << "Time for halide_metal_device_sync: " << (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
WEAK int halide_metal_device_release(void *user_context) {
int error;
mtl_device *acquired_device;
mtl_command_queue *acquired_queue;
error = halide_metal_acquire_context(user_context, &acquired_device, &acquired_queue, false);
if (error != 0) {
return error;
}
if (device) {
halide_metal_device_sync_internal(queue, NULL);
module_state *state = state_list;
while (state) {
if (state->library) {
debug(user_context) << "Metal - Releasing: new_library_with_source " << state->library << "\n";
release_ns_object(state->library);
state->library = NULL;
}
state = state->next;
}
if (acquired_device == device) {
debug(user_context) << "Metal - Releasing: new_command_queue " << queue << "\n";
release_ns_object(queue);
queue = NULL;
debug(user_context) << "Metal - Releasing: MTLCreateSystemDefaultDevice " << device << "\n";
release_ns_object(device);
device = NULL;
}
}
halide_metal_release_context(user_context);
return 0;
}
WEAK int halide_metal_copy_to_device(void *user_context, halide_buffer_t* buffer) {
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
MetalContextHolder metal_context(user_context, true);
if (metal_context.error != 0) {
return metal_context.error;
}
halide_assert(user_context, buffer->host && buffer->device);
device_copy c = make_host_to_device_copy(buffer);
mtl_buffer *metal_buffer = (mtl_buffer *)c.dst;
c.dst = (uint64_t)buffer_contents(metal_buffer);
debug(user_context) << "halide_metal_copy_to_device dev = " << (void*)buffer->device
<< " metal_buffer = " << metal_buffer
<< " host = " << buffer->host << "\n";
copy_memory(c, user_context);
if (is_buffer_managed(metal_buffer)) {
size_t total_size = buffer->size_in_bytes();
halide_assert(user_context, total_size != 0);
NSRange total_extent;
total_extent.location = 0;
total_extent.length = total_size;
did_modify_range(metal_buffer, total_extent);
}
halide_metal_device_sync_internal(metal_context.queue, buffer);
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << "Time for halide_metal_copy_to_device: "
<< (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
WEAK int halide_metal_copy_to_host(void *user_context, halide_buffer_t* buffer) {
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
MetalContextHolder metal_context(user_context, true);
if (metal_context.error != 0) {
return metal_context.error;
}
halide_metal_device_sync_internal(metal_context.queue, buffer);
halide_assert(user_context, buffer->host && buffer->device);
halide_assert(user_context, buffer->dimensions <= MAX_COPY_DIMS);
if (buffer->dimensions > MAX_COPY_DIMS) {
return -1;
}
device_copy c = make_device_to_host_copy(buffer);
c.src = (uint64_t)buffer_contents((mtl_buffer *)c.src);
copy_memory(c, user_context);
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << "Time for halide_metal_copy_to_host: " << (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
WEAK int halide_metal_run(void *user_context,
void *state_ptr,
const char* entry_name,
int blocksX, int blocksY, int blocksZ,
int threadsX, int threadsY, int threadsZ,
int shared_mem_bytes,
size_t arg_sizes[],
void* args[],
int8_t arg_is_buffer[],
int num_attributes,
float* vertex_buffer,
int num_coords_dim0,
int num_coords_dim1) {
#ifdef DEBUG_RUNTIME
uint64_t t_before = halide_current_time_ns(user_context);
#endif
MetalContextHolder metal_context(user_context, true);
if (metal_context.error != 0) {
return metal_context.error;
}
mtl_command_buffer *command_buffer = new_command_buffer(metal_context.queue);
if (command_buffer == 0) {
error(user_context) << "Metal: Could not allocate command buffer.\n";
return -1;
}
mtl_compute_command_encoder *encoder = new_compute_command_encoder(command_buffer);
if (encoder == 0) {
error(user_context) << "Metal: Could not allocate compute command encoder.\n";
return -1;
}
halide_assert(user_context, state_ptr);
module_state *state = (module_state*)state_ptr;
mtl_function *function = new_function_with_name(state->library, entry_name, strlen(entry_name));
if (function == 0) {
error(user_context) << "Metal: Could not get function " << entry_name << "from Metal library.\n";
return -1;
}
mtl_compute_pipeline_state *pipeline_state = new_compute_pipeline_state_with_function(metal_context.device, function);
if (pipeline_state == 0) {
error(user_context) << "Metal: Could not allocate pipeline state.\n";
release_ns_object(function);
return -1;
}
set_compute_pipeline_state(encoder, pipeline_state);
size_t total_args_size = 0;
for (size_t i = 0; arg_sizes[i] != 0; i++) {
if (!arg_is_buffer[i]) {
halide_assert(user_context, (arg_sizes[i] & (arg_sizes[i] - 1)) == 0);
total_args_size = (total_args_size + arg_sizes[i] - 1) & ~(arg_sizes[i] - 1);
total_args_size += arg_sizes[i];
}
}
int32_t buffer_index = 0;
if (total_args_size > 0) {
mtl_buffer *args_buffer = new_buffer(metal_context.device, total_args_size);
if (args_buffer == 0) {
error(user_context) << "Metal: Could not allocate arguments buffer.\n";
release_ns_object(pipeline_state);
release_ns_object(function);
return -1;
}
char *args_ptr = (char *)buffer_contents(args_buffer);
size_t offset = 0;
for (size_t i = 0; arg_sizes[i] != 0; i++) {
if (!arg_is_buffer[i]) {
memcpy(&args_ptr[offset], args[i], arg_sizes[i]);
offset = (offset + arg_sizes[i] - 1) & ~(arg_sizes[i] - 1);
offset += arg_sizes[i];
}
}
halide_assert(user_context, offset == total_args_size);
set_input_buffer(encoder, args_buffer, buffer_index);
release_ns_object(args_buffer);
buffer_index++;
}
for (size_t i = 0; arg_sizes[i] != 0; i++) {
if (arg_is_buffer[i]) {
halide_assert(user_context, arg_sizes[i] == sizeof(uint64_t));
mtl_buffer *metal_buffer = *((mtl_buffer **)args[i]);
set_input_buffer(encoder, metal_buffer, buffer_index);
buffer_index++;
}
}
shared_mem_bytes = (shared_mem_bytes + 0xF) & ~0xF;
debug(user_context) << "Setting shared memory length to " << shared_mem_bytes << "\n";
set_threadgroup_memory_length(encoder, shared_mem_bytes, 0);
static int32_t total_dispatches = 0;
debug(user_context) << "Dispatching threadgroups (number " << total_dispatches++ <<
") blocks(" << blocksX << ", " << blocksY << ", " << blocksZ <<
") threads(" << threadsX << ", " << threadsY << ", " << threadsZ << ")\n";
dispatch_threadgroups(encoder,
blocksX, blocksY, blocksZ,
threadsX, threadsY, threadsZ);
end_encoding(encoder);
add_command_buffer_completed_handler(command_buffer, &command_buffer_completed_handler_block);
commit_command_buffer(command_buffer);
release_ns_object(pipeline_state);
release_ns_object(function);
#ifdef DEBUG_RUNTIME
uint64_t t_after = halide_current_time_ns(user_context);
debug(user_context) << "Time for halide_metal_device_run: " << (t_after - t_before) / 1.0e6 << " ms\n";
#endif
return 0;
}
WEAK int halide_metal_device_and_host_malloc(void *user_context, struct halide_buffer_t *buffer) {
debug(user_context) << "halide_metal_device_and_host_malloc called.\n";
int result = halide_metal_device_malloc(user_context, buffer);
if (result == 0) {
mtl_buffer *metal_buffer = (mtl_buffer *)(buffer->device);
buffer->host = (uint8_t *)buffer_contents(metal_buffer);
debug(user_context) << "halide_metal_device_and_host_malloc"
<< " device = " << (void*)buffer->device
<< " metal_buffer = " << metal_buffer
<< " host = " << buffer->host << "\n";
}
return result;
}
WEAK int halide_metal_device_and_host_free(void *user_context, struct halide_buffer_t *buffer) {
debug(user_context) << "halide_metal_device_and_host_free called.\n";
halide_metal_device_free(user_context, buffer);
buffer->host = NULL;
return 0;
}
WEAK int halide_metal_wrap_buffer(void *user_context, struct halide_buffer_t *buf, uintptr_t buffer) {
halide_assert(user_context, buf->device == 0);
if (buf->device != 0) {
return -2;
}
buf->device = buffer;
buf->device_interface = &metal_device_interface;
buf->device_interface->use_module();
if (buf->device == 0) {
return -1;
}
return 0;
}
WEAK uintptr_t halide_metal_detach_buffer(void *user_context, struct halide_buffer_t *buf) {
if (buf->device == 0) {
return 0;
}
halide_assert(user_context, buf->device_interface == &metal_device_interface);
uint64_t buffer = buf->device;
buf->device_interface->release_module();
buf->device_interface = NULL;
buf->device = 0;
return (uintptr_t)buffer;
}
WEAK uintptr_t halide_metal_get_buffer(void *user_context, struct halide_buffer_t *buf) {
if (buf->device == NULL) {
return 0;
}
halide_assert(user_context, buf->device_interface == &metal_device_interface);
return (uintptr_t)(buf->device);
}
WEAK const struct halide_device_interface_t *halide_metal_device_interface() {
return &metal_device_interface;
}
namespace {
__attribute__((destructor))
WEAK void halide_metal_cleanup() {
halide_metal_device_release(NULL);
}
}
}
namespace Halide { namespace Runtime { namespace Internal { namespace Metal {
WEAK halide_device_interface_t metal_device_interface = {
halide_use_jit_module,
halide_release_jit_module,
halide_metal_device_malloc,
halide_metal_device_free,
halide_metal_device_sync,
halide_metal_device_release,
halide_metal_copy_to_host,
halide_metal_copy_to_device,
halide_metal_device_and_host_malloc,
halide_metal_device_and_host_free,
};
}}}}