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Make MicroContext and MicroGraph abstract #2202

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merged 4 commits into from
Sep 11, 2023
Merged

Make MicroContext and MicroGraph abstract #2202

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f1a3dce
Make MicroContext and MicroGraph abstract
rascani Aug 24, 2023
c5d3709
Zero initialize the TfLiteStridedSliceParams
rascani Aug 31, 2023
c68748b
Merge remote-tracking branch 'upstream_gh/main' into merged_refactor
rascani Aug 31, 2023
06f4868
Merge branch 'main' into merged_refactor
mergify[bot] Sep 11, 2023
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48 changes: 40 additions & 8 deletions tensorflow/lite/micro/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -39,8 +39,8 @@ cc_library(
deps = [
":memory_helpers",
":micro_allocator",
":micro_context",
":micro_graph",
":micro_interpreter_context",
":micro_interpreter_graph",
":micro_profiler_interface",
":op_resolvers",
"//tensorflow/lite:type_to_tflitetype",
Expand All @@ -62,10 +62,28 @@ cc_library(
"micro_context.h",
],
copts = micro_copts(),
deps = [
":micro_common",
":micro_graph",
":micro_log",
"//tensorflow/lite/c:common",
],
)

cc_library(
name = "micro_interpreter_context",
srcs = [
"micro_interpreter_context.cc",
],
hdrs = [
"micro_interpreter_context.h",
],
copts = micro_copts(),
deps = [
":memory_helpers",
":micro_allocator",
":micro_graph",
":micro_context",
":micro_interpreter_graph",
":micro_log",
":micro_profiler_interface",
"//tensorflow/lite/c:common",
Expand Down Expand Up @@ -94,22 +112,34 @@ cc_library(
copts = micro_copts(),
deps = [
":memory_helpers",
":micro_allocator",
":micro_arena_constants",
":micro_context",
":micro_log",
":mock_micro_graph",
"//tensorflow/lite/c:common",
"//tensorflow/lite/micro/arena_allocator:simple_memory_allocator",
],
)

cc_library(
name = "micro_graph",
srcs = ["micro_graph.cc"],
hdrs = ["micro_graph.h"],
deps = [
":micro_common",
":micro_resource_variable",
"//tensorflow/lite/kernels/internal:compatibility",
],
)

cc_library(
name = "micro_interpreter_graph",
srcs = ["micro_interpreter_graph.cc"],
hdrs = ["micro_interpreter_graph.h"],
deps = [
":memory_helpers",
":micro_allocator",
":micro_common",
":micro_graph",
":micro_log",
":micro_profiler",
":micro_resource_variable",
Expand Down Expand Up @@ -401,13 +431,14 @@ cc_test(
)

cc_test(
name = "micro_context_test",
name = "micro_interpreter_context_test",
srcs = [
"micro_context_test.cc",
"micro_interpreter_context_test.cc",
],
deps = [
":micro_allocator",
":micro_context",
":micro_interpreter_context",
":micro_interpreter_graph",
":test_helpers",
"//tensorflow/lite/micro/testing:micro_test",
],
Expand All @@ -421,6 +452,7 @@ cc_test(
deps = [
":fake_micro_context",
":micro_allocator",
":mock_micro_graph",
":test_helpers",
"//tensorflow/lite/micro/testing:micro_test",
],
Expand Down
23 changes: 11 additions & 12 deletions tensorflow/lite/micro/fake_micro_context.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -15,28 +15,18 @@ limitations under the License.

#include "tensorflow/lite/micro/fake_micro_context.h"

#include "tensorflow/lite/c/c_api_types.h"
#include "tensorflow/lite/kernels/internal/compatibility.h"
#include "tensorflow/lite/micro/arena_allocator/single_arena_buffer_allocator.h"
#include "tensorflow/lite/micro/micro_allocator.h"
#include "tensorflow/lite/micro/micro_arena_constants.h"
#include "tensorflow/lite/micro/micro_log.h"

namespace tflite {
namespace {
// Dummy static variables to allow creation of dummy MicroAllocator.
// All tests are guarateed to run serially.
static constexpr int KDummyTensorArenaSize = 256;
static uint8_t dummy_tensor_arena[KDummyTensorArenaSize];
} // namespace

FakeMicroContext::FakeMicroContext(TfLiteTensor* tensors,
SingleArenaBufferAllocator* allocator,
MicroGraph* micro_graph)
: MicroContext(
MicroAllocator::Create(dummy_tensor_arena, KDummyTensorArenaSize),
nullptr, micro_graph),
tensors_(tensors),
allocator_(allocator) {}
: graph_(*micro_graph), tensors_(tensors), allocator_(allocator) {}

TfLiteTensor* FakeMicroContext::AllocateTempTfLiteTensor(int tensor_index) {
allocated_temp_count_++;
Expand Down Expand Up @@ -113,4 +103,13 @@ void* FakeMicroContext::GetScratchBuffer(int buffer_index) {
return scratch_buffers_[buffer_index];
}

TfLiteStatus FakeMicroContext::set_external_context(
void* external_context_payload) {
return kTfLiteError;
}

void* FakeMicroContext::external_context() { return nullptr; }

MicroGraph& FakeMicroContext::graph() { return graph_; }

} // namespace tflite
7 changes: 7 additions & 0 deletions tensorflow/lite/micro/fake_micro_context.h
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,8 @@ namespace tflite {

class FakeMicroContext : public MicroContext {
public:
~FakeMicroContext() = default;

FakeMicroContext(TfLiteTensor* tensors, SingleArenaBufferAllocator* allocator,
MicroGraph* micro_graph);

Expand All @@ -44,9 +46,14 @@ class FakeMicroContext : public MicroContext {

TfLiteEvalTensor* GetEvalTensor(int tensor_index) override;

TfLiteStatus set_external_context(void* external_context_payload) override;
void* external_context() override;
MicroGraph& graph() override;

private:
static constexpr int kNumScratchBuffers_ = 12;

MicroGraph& graph_;
int scratch_buffer_count_ = 0;
uint8_t* scratch_buffers_[kNumScratchBuffers_];

Expand Down
5 changes: 3 additions & 2 deletions tensorflow/lite/micro/fake_micro_context_test.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ limitations under the License.

#include "tensorflow/lite/micro/arena_allocator/single_arena_buffer_allocator.h"
#include "tensorflow/lite/micro/micro_allocator.h"
#include "tensorflow/lite/micro/mock_micro_graph.h"
#include "tensorflow/lite/micro/test_helpers.h"
#include "tensorflow/lite/micro/testing/micro_test.h"

Expand Down Expand Up @@ -58,7 +59,7 @@ TF_LITE_MICRO_TEST(TestGetBeforeRequestScratchBufferWouldReturnNull) {
uint8_t arena_buffer[kArenaSize];
tflite::SingleArenaBufferAllocator simple_memory_allocator(arena_buffer,
kArenaSize);
tflite::MicroGraph dummy_micro_graph(nullptr, nullptr, nullptr, nullptr);
tflite::MockMicroGraph dummy_micro_graph{&simple_memory_allocator};

tflite::FakeMicroContext micro_context = tflite::CreateFakeMicroContext(
&simple_memory_allocator, &dummy_micro_graph);
Expand All @@ -71,7 +72,7 @@ TF_LITE_MICRO_TEST(TestRequestScratchBufferAndThenGetShouldSucceed) {
uint8_t arena_buffer[kArenaSize];
tflite::SingleArenaBufferAllocator simple_memory_allocator(arena_buffer,
kArenaSize);
tflite::MicroGraph dummy_micro_graph(nullptr, nullptr, nullptr, nullptr);
tflite::MockMicroGraph dummy_micro_graph{&simple_memory_allocator};

tflite::FakeMicroContext micro_context = tflite::CreateFakeMicroContext(
&simple_memory_allocator, &dummy_micro_graph);
Expand Down
90 changes: 5 additions & 85 deletions tensorflow/lite/micro/micro_context.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -17,48 +17,14 @@ limitations under the License.

#include <cstdarg>
#include <cstddef>
#include <cstdint>

#include "tensorflow/lite/kernels/internal/compatibility.h"
#include "tensorflow/lite/micro/micro_common.h"
#include "tensorflow/lite/micro/micro_log.h"

namespace tflite {
MicroContext::MicroContext(MicroAllocator* allocator, const Model* model,
MicroGraph* graph)
: allocator_(*allocator),
graph_(*graph),
model_(model),
state_(InterpreterState::kInit) {}
namespace {

MicroContext::~MicroContext() {}

void* MicroContext::AllocatePersistentBuffer(size_t bytes) {
TFLITE_DCHECK(state_ == InterpreterState::kPrepare ||
state_ == InterpreterState::kInit);
return allocator_.AllocatePersistentBuffer(bytes);
}

TfLiteStatus MicroContext::RequestScratchBufferInArena(size_t bytes,
int* buffer_idx) {
TFLITE_DCHECK(state_ == InterpreterState::kPrepare);
return allocator_.RequestScratchBufferInArena(
bytes, graph_.GetCurrentSubgraphIndex(), buffer_idx);
}

void* MicroContext::GetScratchBuffer(int buffer_idx) {
TFLITE_DCHECK(state_ == InterpreterState::kInvoke);
ScratchBufferHandle* handle = scratch_buffer_handles_ + buffer_idx;
return handle->data;
}

TfLiteTensor* MicroContext::AllocateTempTfLiteTensor(int tensor_idx) {
return allocator_.AllocateTempTfLiteTensor(model_, graph_.GetAllocations(),
tensor_idx,
graph_.GetCurrentSubgraphIndex());
}

int MicroContext::GetTensorIndex(int index, int max_size,
const int* tensor_indices) {
int GetTensorIndex(int index, int max_size, const int* tensor_indices) {
if (index >= 0 && index < max_size) {
const int tensor_index = tensor_indices[index];
if (tensor_index != kTfLiteOptionalTensor) {
Expand All @@ -68,6 +34,8 @@ int MicroContext::GetTensorIndex(int index, int max_size,
return -1;
}

} // namespace

TfLiteTensor* MicroContext::AllocateTempInputTensor(const TfLiteNode* node,
int index) {
const int tensor_index =
Expand Down Expand Up @@ -98,46 +66,6 @@ TfLiteTensor* MicroContext::AllocateTempIntermediateTensor(
return AllocateTempTfLiteTensor(tensor_index);
}

void MicroContext::DeallocateTempTfLiteTensor(TfLiteTensor* tensor) {
return allocator_.DeallocateTempTfLiteTensor(tensor);
}

uint8_t* MicroContext::AllocateTempBuffer(size_t size, size_t alignment) {
TFLITE_DCHECK(state_ == InterpreterState::kPrepare);
return allocator_.AllocateTempBuffer(size, alignment);
}

void MicroContext::DeallocateTempBuffer(uint8_t* buffer) {
TFLITE_DCHECK(state_ == InterpreterState::kPrepare);
allocator_.DeallocateTempBuffer(buffer);
}

TfLiteEvalTensor* MicroContext::GetEvalTensor(int tensor_idx) {
return &graph_.GetAllocations()[graph_.GetCurrentSubgraphIndex()]
.tensors[tensor_idx];
}

void MicroContext::SetScratchBufferHandles(
ScratchBufferHandle* scratch_buffer_handles) {
scratch_buffer_handles_ = scratch_buffer_handles;
}

TfLiteStatus MicroContext::set_external_context(
void* external_context_payload) {
TFLITE_DCHECK(state_ == InterpreterState::kPrepare ||
state_ == InterpreterState::kInvoke);
if (external_context_payload == nullptr ||
external_context_payload_ != nullptr) {
MicroPrintf(
"Attempting to set external context to %x but it was %x already",
external_context_payload, external_context_payload_);
return kTfLiteError;
}

external_context_payload_ = external_context_payload;
return kTfLiteOk;
}

void MicroContextReportOpError(struct TfLiteContext* context,
const char* format, ...) {
va_list args;
Expand All @@ -146,12 +74,4 @@ void MicroContextReportOpError(struct TfLiteContext* context,
va_end(args);
}

void MicroContext::SetInterpreterState(MicroContext::InterpreterState state) {
state_ = state;
}

MicroContext::InterpreterState MicroContext::GetInterpreterState() const {
return state_;
}

} // namespace tflite
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