1# Copyright 2020 The Pigweed Authors 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); you may not 4# use this file except in compliance with the License. You may obtain a copy of 5# the License at 6# 7# https://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12# License for the specific language governing permissions and limitations under 13# the License. 14 15import("//build_overrides/pigweed.gni") 16 17import("$dir_pw_build/facade.gni") 18import("$dir_pw_chrono/backend.gni") 19import("$dir_pw_docgen/docs.gni") 20import("$dir_pw_protobuf_compiler/proto.gni") 21import("$dir_pw_unit_test/test.gni") 22 23config("public_include_path") { 24 include_dirs = [ "public" ] 25 visibility = [ ":*" ] 26} 27 28pw_source_set("epoch") { 29 public = [ "public/pw_chrono/epoch.h" ] 30 public_configs = [ ":public_include_path" ] 31} 32 33pw_facade("system_clock") { 34 backend = pw_chrono_SYSTEM_CLOCK_BACKEND 35 public_configs = [ ":public_include_path" ] 36 public = [ 37 "public/pw_chrono/internal/system_clock_macros.h", 38 "public/pw_chrono/system_clock.h", 39 ] 40 public_deps = [ 41 ":epoch", 42 "$dir_pw_preprocessor", 43 ] 44 sources = [ "system_clock.cc" ] 45} 46 47pw_facade("system_timer") { 48 backend = pw_chrono_SYSTEM_TIMER_BACKEND 49 public_configs = [ ":public_include_path" ] 50 public = [ "public/pw_chrono/system_timer.h" ] 51 public_deps = [ 52 ":system_clock", 53 "$dir_pw_function", 54 ] 55} 56 57# Dependency injectable implementation of pw::chrono::SystemClock::Interface. 58pw_source_set("simulated_system_clock") { 59 public_configs = [ ":public_include_path" ] 60 public = [ "public/pw_chrono/simulated_system_clock.h" ] 61 public_deps = [ 62 ":system_clock", 63 "$dir_pw_sync:interrupt_spin_lock", 64 ] 65} 66 67pw_test_group("tests") { 68 tests = [ 69 ":simulated_system_clock_test", 70 ":system_clock_facade_test", 71 ":system_timer_facade_test", 72 ] 73} 74 75pw_test("simulated_system_clock_test") { 76 enable_if = pw_chrono_SYSTEM_CLOCK_BACKEND != "" 77 sources = [ "simulated_system_clock_test.cc" ] 78 deps = [ ":simulated_system_clock" ] 79} 80 81pw_test("system_clock_facade_test") { 82 enable_if = pw_chrono_SYSTEM_CLOCK_BACKEND != "" 83 sources = [ 84 "system_clock_facade_test.cc", 85 "system_clock_facade_test_c.c", 86 ] 87 deps = [ 88 ":system_clock", 89 "$dir_pw_preprocessor", 90 pw_chrono_SYSTEM_CLOCK_BACKEND, 91 ] 92} 93 94pw_test("system_timer_facade_test") { 95 enable_if = pw_chrono_SYSTEM_TIMER_BACKEND != "" 96 sources = [ "system_timer_facade_test.cc" ] 97 deps = [ 98 ":system_timer", 99 "$dir_pw_sync:thread_notification", 100 pw_chrono_SYSTEM_TIMER_BACKEND, 101 ] 102} 103 104# The ":time" target wraps the time() and gettimeofday(), which are 105# commonly used by TLS libraries for expiration check. 106config("time_wrap") { 107 # Link options that wrap C time calls. 108 ldflags = [ 109 "-Wl,--wrap=time", 110 "-Wl,--wrap=gettimeofday", 111 ] 112 visibility = [ ":*" ] 113} 114 115# The build time is obtained with a python script and put in a generated header 116# file. The header file is included in build_time.cc 117pw_python_action("generate_build_time_header") { 118 header_output = "$target_gen_dir/pw_chrono/build_time.h" 119 script = "generate_build_time_header.py" 120 outputs = [ header_output ] 121 args = [ rebase_path(header_output) ] 122} 123 124# The target provides a backend to :time that returns build time. 125pw_source_set("wrap_time_build_time") { 126 all_dependent_configs = [ ":time_wrap" ] 127 include_dirs = 128 [ get_label_info(":generate_build_time_header", "target_gen_dir") ] 129 sources = [ "wrap_time_build_time.cc" ] 130 deps = [ ":generate_build_time_header" ] 131} 132 133pw_source_set("wrap_time_system_clock") { 134 all_dependent_configs = [ ":time_wrap" ] 135 sources = [ "wrap_time_system_clock.cc" ] 136 deps = [ ":system_clock" ] 137} 138 139pw_proto_library("protos") { 140 sources = [ "chrono.proto" ] 141 prefix = "pw_chrono_protos" 142} 143 144pw_doc_group("docs") { 145 sources = [ 146 "backends.rst", 147 "docs.rst", 148 ] 149} 150