# Copyright 2021 The Pigweed Authors
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

import("//build_overrides/pigweed.gni")

import("$dir_pw_build/facade.gni")
import("$dir_pw_build/target_types.gni")
import("$dir_pw_chrono/backend.gni")
import("$dir_pw_docgen/docs.gni")
import("$dir_pw_unit_test/test.gni")
import("backend.gni")

config("public_include_path") {
  include_dirs = [ "public" ]
  visibility = [ ":*" ]
}

config("backend_config") {
  include_dirs = [ "public_overrides" ]
  visibility = [ ":*" ]
}

pw_facade("binary_semaphore") {
  backend = pw_sync_BINARY_SEMAPHORE_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/binary_semaphore.h" ]
  public_deps = [
    "$dir_pw_chrono:system_clock",
    "$dir_pw_preprocessor",
  ]
  sources = [ "binary_semaphore.cc" ]
}

pw_facade("counting_semaphore") {
  backend = pw_sync_COUNTING_SEMAPHORE_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/counting_semaphore.h" ]
  public_deps = [
    "$dir_pw_chrono:system_clock",
    "$dir_pw_preprocessor",
  ]
  sources = [ "counting_semaphore.cc" ]
}

pw_source_set("lock_annotations") {
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/lock_annotations.h" ]
  public_deps = [ "$dir_pw_preprocessor" ]
}

pw_source_set("lock_traits") {
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/lock_traits.h" ]
}

pw_source_set("borrow") {
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/borrow.h" ]
  public_deps = [
    ":lock_annotations",
    ":lock_traits",
    ":virtual_basic_lockable",
    dir_pw_assert,
  ]
}

pw_source_set("inline_borrowable") {
  public = [
    "public/pw_sync/inline_borrowable.h",
    "public/pw_sync/internal/borrowable_storage.h",
  ]
  public_deps = [
    ":borrow",
    ":mutex",
    ":virtual_basic_lockable",
  ]
  public_configs = [ ":public_include_path" ]
}

pw_source_set("virtual_basic_lockable") {
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/virtual_basic_lockable.h" ]
  public_deps = [
    ":lock_annotations",
    dir_pw_polyfill,
  ]
}

pw_facade("mutex") {
  backend = pw_sync_MUTEX_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/mutex.h" ]
  public_deps = [
    ":lock_annotations",
    ":virtual_basic_lockable",
    "$dir_pw_preprocessor",
  ]
  sources = [ "mutex.cc" ]
}

pw_facade("timed_mutex") {
  backend = pw_sync_TIMED_MUTEX_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/timed_mutex.h" ]
  public_deps = [
    ":mutex",
    ":virtual_basic_lockable",
    "$dir_pw_chrono:system_clock",
    "$dir_pw_preprocessor",
  ]
  sources = [ "timed_mutex.cc" ]
}

pw_facade("recursive_mutex") {
  backend = pw_sync_RECURSIVE_MUTEX_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/recursive_mutex.h" ]
  public_deps = [
    ":lock_annotations",
    "$dir_pw_preprocessor",
  ]
  sources = [ "recursive_mutex.cc" ]
  visibility = [ ":*" ]
}

pw_facade("interrupt_spin_lock") {
  backend = pw_sync_INTERRUPT_SPIN_LOCK_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/interrupt_spin_lock.h" ]
  public_deps = [
    ":lock_annotations",
    ":virtual_basic_lockable",
    "$dir_pw_preprocessor",
  ]
  sources = [ "interrupt_spin_lock.cc" ]
}

pw_facade("thread_notification") {
  backend = pw_sync_THREAD_NOTIFICATION_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/thread_notification.h" ]
}

pw_facade("timed_thread_notification") {
  backend = pw_sync_TIMED_THREAD_NOTIFICATION_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/timed_thread_notification.h" ]
  public_deps = [
    ":thread_notification",
    "$dir_pw_chrono:system_clock",
  ]
}

# This target provides the backend for pw::sync::ThreadNotification based on
# pw::sync::BinarySemaphore.
pw_source_set("binary_semaphore_thread_notification_backend") {
  public_configs = [
    ":public_include_path",
    ":backend_config",
  ]
  public = [
    "public/pw_sync/backends/binary_semaphore_thread_notification_inline.h",
    "public/pw_sync/backends/binary_semaphore_thread_notification_native.h",
    "public_overrides/pw_sync_backend/thread_notification_inline.h",
    "public_overrides/pw_sync_backend/thread_notification_native.h",
  ]
  public_deps = [
    ":binary_semaphore",
    ":thread_notification.facade",
  ]
}

# This target provides the backend for pw::sync::TimedThreadNotification based
# on pw::sync::BinarySemaphore.
pw_source_set("binary_semaphore_timed_thread_notification_backend") {
  public_configs = [
    ":public_include_path",
    ":backend_config",
  ]
  public = [
    "public/pw_sync/backends/binary_semaphore_timed_thread_notification_inline.h",
    "public_overrides/pw_sync_backend/timed_thread_notification_inline.h",
  ]
  public_deps = [
    ":binary_semaphore_thread_notification_backend",
    ":timed_thread_notification.facade",
    "$dir_pw_chrono:system_clock",
  ]
}

pw_source_set("yield_core") {
  public = [ "public/pw_sync/yield_core.h" ]
  public_configs = [ ":public_include_path" ]
}

pw_facade("condition_variable") {
  backend = pw_sync_CONDITION_VARIABLE_BACKEND
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/condition_variable.h" ]
  public_deps = [
    "$dir_pw_chrono:system_clock",
    "$dir_pw_sync:mutex",
  ]
}

pw_test_group("tests") {
  tests = [
    ":lock_traits_test",
    ":borrow_test",
    ":binary_semaphore_facade_test",
    ":counting_semaphore_facade_test",
    ":mutex_facade_test",
    ":timed_mutex_facade_test",
    ":recursive_mutex_facade_test",
    ":interrupt_spin_lock_facade_test",
    ":thread_notification_facade_test",
    ":timed_thread_notification_facade_test",
    ":inline_borrowable_test",
  ]
}

pw_source_set("lock_testing") {
  public_configs = [ ":public_include_path" ]
  public = [ "public/pw_sync/lock_testing.h" ]
  sources = [ "lock_testing.cc" ]
  public_deps = [ ":virtual_basic_lockable" ]
  deps = [ dir_pw_assert ]
}

pw_source_set("borrow_lockable_tests") {
  public = [ "pw_sync_private/borrow_lockable_tests.h" ]
  public_deps = [
    ":borrow",
    ":lock_traits",
  ]
}

pw_test("lock_traits_test") {
  sources = [ "lock_traits_test.cc" ]
  deps = [
    ":lock_testing",
    ":lock_traits",
  ]
}

pw_test("borrow_test") {
  sources = [ "borrow_test.cc" ]
  deps = [
    ":borrow",
    ":borrow_lockable_tests",
    ":lock_testing",
  ]
}

pw_test("inline_borrowable_test") {
  sources = [ "inline_borrowable_test.cc" ]
  deps = [
    ":inline_borrowable",
    ":interrupt_spin_lock",
    ":lock_annotations",
    ":mutex",
  ]
}

pw_test("binary_semaphore_facade_test") {
  enable_if = pw_sync_BINARY_SEMAPHORE_BACKEND != ""
  sources = [
    "binary_semaphore_facade_test.cc",
    "binary_semaphore_facade_test_c.c",
  ]
  deps = [
    ":binary_semaphore",
    "$dir_pw_preprocessor",
    pw_sync_BINARY_SEMAPHORE_BACKEND,
  ]
}

pw_test("counting_semaphore_facade_test") {
  enable_if = pw_sync_COUNTING_SEMAPHORE_BACKEND != ""
  sources = [
    "counting_semaphore_facade_test.cc",
    "counting_semaphore_facade_test_c.c",
  ]
  deps = [
    ":counting_semaphore",
    "$dir_pw_preprocessor",
    pw_sync_COUNTING_SEMAPHORE_BACKEND,
  ]
}

pw_test("mutex_facade_test") {
  enable_if = pw_sync_MUTEX_BACKEND != ""
  sources = [
    "mutex_facade_test.cc",
    "mutex_facade_test_c.c",
  ]
  deps = [
    ":borrow_lockable_tests",
    ":mutex",
    "$dir_pw_preprocessor",
    pw_sync_MUTEX_BACKEND,
  ]
}

pw_test("timed_mutex_facade_test") {
  enable_if = pw_sync_TIMED_MUTEX_BACKEND != ""
  sources = [
    "timed_mutex_facade_test.cc",
    "timed_mutex_facade_test_c.c",
  ]
  deps = [
    ":borrow_lockable_tests",
    ":timed_mutex",
    "$dir_pw_preprocessor",
    pw_sync_TIMED_MUTEX_BACKEND,
  ]
}

pw_test("recursive_mutex_facade_test") {
  enable_if = pw_sync_RECURSIVE_MUTEX_BACKEND != ""
  sources = [
    "recursive_mutex_facade_test.cc",
    "recursive_mutex_facade_test_c.c",
  ]
  deps = [
    ":recursive_mutex",
    "$dir_pw_preprocessor",
    pw_sync_RECURSIVE_MUTEX_BACKEND,
  ]
}

pw_test("interrupt_spin_lock_facade_test") {
  enable_if = pw_sync_INTERRUPT_SPIN_LOCK_BACKEND != ""
  sources = [
    "interrupt_spin_lock_facade_test.cc",
    "interrupt_spin_lock_facade_test_c.c",
  ]
  deps = [
    ":borrow_lockable_tests",
    ":interrupt_spin_lock",
    "$dir_pw_preprocessor",
    pw_sync_INTERRUPT_SPIN_LOCK_BACKEND,
  ]

  # TODO: https://pwbug.dev/325509758 - Doesn't work on the Pico yet; hangs
  # indefinitely.
  if (pw_build_EXECUTABLE_TARGET_TYPE == "pico_executable") {
    enable_if = false
  }
}

pw_test("thread_notification_facade_test") {
  enable_if = pw_sync_THREAD_NOTIFICATION_BACKEND != ""
  sources = [ "thread_notification_facade_test.cc" ]
  deps = [
    ":thread_notification",
    pw_sync_THREAD_NOTIFICATION_BACKEND,
  ]
}

pw_test("timed_thread_notification_facade_test") {
  enable_if = pw_sync_TIMED_THREAD_NOTIFICATION_BACKEND != ""
  sources = [ "timed_thread_notification_facade_test.cc" ]
  deps = [
    ":timed_thread_notification",
    pw_sync_TIMED_THREAD_NOTIFICATION_BACKEND,
  ]
}

# This needs to be instantiated per platform that provides
# an implementation of $dir_pw_thread:test_threads and
# $dir_pw_sync:condition_variable.
pw_source_set("condition_variable_test") {
  testonly = pw_unit_test_TESTONLY
  sources = [ "condition_variable_test.cc" ]
  deps = [
    ":condition_variable",
    "$dir_pw_containers:vector",
    "$dir_pw_sync:mutex",
    "$dir_pw_sync:timed_thread_notification",
    "$dir_pw_thread:non_portable_test_thread_options",
    "$dir_pw_thread:sleep",
    "$dir_pw_thread:thread",
    "$dir_pw_unit_test",
  ]
}

pw_doc_group("docs") {
  sources = [
    "backends.rst",
    "docs.rst",
  ]
}