# Copyright (C) 2018 The Android Open Source Project
#
# 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
#
#      http://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("../../../gn/fuzzer.gni")
import("../../../gn/perfetto.gni")
import("../../../gn/test.gni")

assert(enable_perfetto_heapprofd)

# The Android heap profiling daemon.
executable("heapprofd") {
  deps = [
    "../../../gn:default_deps",
    "../../../protos/perfetto/trace:zero",
    "../../../src/base",
    "../../../src/base:unix_socket",
    "../../../src/profiling/memory:daemon",
    "../../../src/profiling/memory:wire_protocol",
    "../../../src/tracing/ipc/producer",
  ]
  sources = [ "main.cc" ]
}

# This library gets loaded into (and executes in) arbitrary android processes.
# Logging must be non-allocating. This is achieved by defining
# PERFETTO_ANDROID_ASYNC_SAFE_LOG, which needs to be set for all perfetto code
# being compiled for this library. When generating Android.bp, the |cflags|
# entry on this target is sufficient (as all sources are flattened into a
# single bp target). However this is not correctly reflected in the gn
# structure (which is a tree of targets) as the dependencies would not pick
# up the flag (and thus use the wrong logging macro).
#
# This builds only in the Android tree, when using the generated Android.bp.
if (perfetto_build_with_android) {
  shared_library("heapprofd_client") {
    configs -= [ "//gn/standalone:android_liblog" ]
    cflags = [ "-DPERFETTO_ANDROID_ASYNC_SAFE_LOG" ]
    deps = [
      ":heapprofd_client_api",
      ":malloc_interceptor_bionic_hooks",
    ]
  }

  # This will export publicly visible symbols for the
  # malloc_interceptor_bionic_hooks.
  source_set("malloc_interceptor_bionic_hooks") {
    deps = [
      ":bionic_libc_platform_headers_on_android",
      ":wrap_allocators",
      "../../../gn:default_deps",
      "../../base",
    ]
    cflags = [
      "-isystem",
      rebase_path("../../../buildtools/bionic/libc", root_build_dir),
    ]
    sources = [ "malloc_interceptor_bionic_hooks.cc" ]
  }
}  # if (perfetto_build_with_android)

executable("heapprofd_standalone_client_example") {
  deps = [
    ":heapprofd_standalone_client",
    "../../../gn:default_deps",
  ]
  sources = [ "heapprofd_standalone_client_example.cc" ]
}

source_set("client_api_standalone") {
  deps = [
    ":client",
    ":client_api",
    ":daemon",
    "../../../gn:default_deps",
    "../../../include/perfetto/ext/tracing/ipc",
    "../../base",
    "../common:proc_utils",
  ]
  sources = [ "client_api_factory_standalone.cc" ]
}

# This can be used to instrument custom allocators to report their allocations
# to Perfetto. This bundles a copy of heapprofd in the library, in contrast to
# heapprofd_client_api (see below), which expects one to be present in the
# Android platform.
shared_library("heapprofd_standalone_client") {
  deps = [
    ":client_api_standalone",
    "../../../gn:default_deps",
  ]
  ldflags = [
    "-Wl,--version-script",
    rebase_path("heapprofd_client_api.map.txt", root_build_dir),
  ]
}

shared_library("heapprofd_api_noop") {
  deps = [ "../../../gn:default_deps" ]
  ldflags = [
    "-Wl,--version-script",
    rebase_path("heapprofd_client_api.map.txt", root_build_dir),
  ]

  # This target does absolutely nothing, so we do not want to depend on
  # liblog.
  configs -= [ "//gn/standalone:android_liblog" ]
  sources = [ "client_api_noop.cc" ]
}

shared_library("heapprofd_client_api") {
  configs -= [ "//gn/standalone:android_liblog" ]
  if (perfetto_build_with_android) {
    cflags = [ "-DPERFETTO_ANDROID_ASYNC_SAFE_LOG" ]
  } else {
    # We don't have async safe logging for non-Android, so disable all
    # logging in the client.
    # TODO(fmayer): Add async-safe logging for non-Android.
    cflags = [ "-DPERFETTO_DISABLE_LOG" ]
  }
  deps = [ ":client_api" ]
  if (perfetto_build_with_android) {
    sources = [ "client_api_factory_android.cc" ]
  }
}

# On GLibc Linux, this can be used to override the allocators using
# LD_PRELOAD. On non-GLibc, this will probably fail to link.
shared_library("heapprofd_glibc_preload") {
  deps = [
    ":client_api_standalone",
    ":wrap_allocators",
    "../../../gn:default_deps",
    "../../base",
  ]
  ldflags = [
    "-Wl,--version-script",
    rebase_path("heapprofd_preload.map.txt", root_build_dir),
  ]
  sources = [ "malloc_interceptor_glibc_preload.cc" ]
}

# On Android builds, this is converted to
# header_libs: ["bionic_libc_platform_headers"].
source_set("bionic_libc_platform_headers_on_android") {
}

source_set("client_api") {
  if (perfetto_build_with_android) {
    cflags = [ "-DPERFETTO_ANDROID_ASYNC_SAFE_LOG" ]
  } else {
    # We don't have async safe logging for non-Android, so disable all
    # logging in the client.
    # TODO(fmayer): Add async-safe logging for non-Android.
    cflags = [ "-DPERFETTO_DISABLE_LOG" ]
  }
  deps = [
    ":client",
    ":scoped_spinlock",
    ":wire_protocol",
    "../../../gn:default_deps",
    "../../base",
    "../common:proc_utils",
  ]
  sources = [ "client_api.cc" ]
}

source_set("wrap_allocators") {
  deps = [
    "../../../gn:default_deps",
    "../../base",
  ]
  sources = [ "wrap_allocators.cc" ]
}

source_set("wire_protocol") {
  public_deps = [ "../../../gn:libunwindstack" ]
  deps = [
    ":bionic_libc_platform_headers_on_android",
    ":ring_buffer",
    "../../../gn:default_deps",
    "../../base",
    "../../base:unix_socket",
  ]
  sources = [
    "wire_protocol.cc",
    "wire_protocol.h",
  ]
}

source_set("scoped_spinlock") {
  deps = [
    "../../../gn:default_deps",
    "../../base",
  ]
  sources = [
    "scoped_spinlock.cc",
    "scoped_spinlock.h",
  ]
}

source_set("ring_buffer") {
  deps = [
    ":scoped_spinlock",
    "../../../gn:default_deps",
    "../../base",
  ]
  sources = [
    "shared_ring_buffer.cc",
    "shared_ring_buffer.h",
  ]
}

source_set("ring_buffer_unittests") {
  testonly = true
  deps = [
    ":ring_buffer",
    "../../../gn:default_deps",
    "../../../gn:gtest_and_gmock",
    "../../base",
  ]
  sources = [ "shared_ring_buffer_unittest.cc" ]
}

source_set("daemon") {
  deps = [
    ":ring_buffer",
    ":scoped_spinlock",
    ":wire_protocol",
    "../../../gn:default_deps",
    "../../../protos/perfetto/config/profiling:cpp",
    "../../base",
    "../../base:unix_socket",
    "../../tracing/core",
    "../../tracing/ipc/producer",
    "../common:callstack_trie",
    "../common:interner",
    "../common:interning_output",
    "../common:proc_utils",
    "../common:producer_support",
    "../common:profiler_guardrails",
    "../common:unwind_support",
  ]
  public_deps = [
    "../../../gn:libunwindstack",
    "../../../protos/perfetto/config/profiling:cpp",
    "../../../protos/perfetto/trace:zero",
    "../../../protos/perfetto/trace/interned_data:zero",
    "../../../protos/perfetto/trace/profiling:zero",
  ]
  sources = [
    "bookkeeping.cc",
    "bookkeeping.h",
    "bookkeeping_dump.cc",
    "bookkeeping_dump.h",
    "heapprofd_producer.cc",
    "heapprofd_producer.h",
    "java_hprof_producer.cc",
    "java_hprof_producer.h",
    "log_histogram.cc",
    "log_histogram.h",
    "system_property.cc",
    "system_property.h",
    "unwinding.cc",
    "unwinding.h",
    "unwound_messages.h",
  ]
}

source_set("client") {
  deps = [
    ":ring_buffer",
    ":scoped_spinlock",
    ":wire_protocol",
    "../../../gn:default_deps",
    "../../base",
    "../../base:unix_socket",
    "../common:proc_utils",
  ]
  public_deps = [ "../../../gn:libunwindstack" ]
  sources = [
    "client.cc",
    "client.h",
    "sampler.cc",
    "sampler.h",
  ]
}

perfetto_unittest_source_set("unittests") {
  testonly = true
  deps = [
    ":client",
    ":daemon",
    ":ring_buffer",
    ":wire_protocol",
    "../../../gn:default_deps",
    "../../../gn:gtest_and_gmock",
    "../../../gn:libunwindstack",
    "../../base",
    "../../base:test_support",
    "../../tracing/core",
    "../common:proc_utils",
    "../common:unwind_support",
  ]
  sources = [
    "bookkeeping_unittest.cc",
    "client_unittest.cc",
    "heapprofd_producer_unittest.cc",
    "parse_smaps_unittest.cc",
    "sampler_unittest.cc",
    "system_property_unittest.cc",
    "unwinding_unittest.cc",
    "wire_protocol_unittest.cc",
  ]

  # Do not build with Android to avoid applying PERFETTO_ANDROID_ASYNC_SAFE_LOG
  # to the whole perfetto_unittests target.
  if (!perfetto_build_with_android) {
    sources += [ "client_api_unittest.cc" ]
    deps += [ ":client_api" ]
  }
}

source_set("end_to_end_tests") {
  testonly = true
  deps = [
    ":client",
    ":daemon",
    ":wire_protocol",
    "../../../gn:default_deps",
    "../../../gn:gtest_and_gmock",
    "../../../gn:libunwindstack",
    "../../../protos/perfetto/config/profiling:cpp",
    "../../../protos/perfetto/trace/interned_data:cpp",
    "../../../protos/perfetto/trace/profiling:cpp",
    "../../../test:test_helper",
    "../../base",
    "../../base:test_support",
    "../../trace_processor:lib",
  ]
  sources = [ "heapprofd_end_to_end_test.cc" ]
  if (perfetto_build_with_android) {
    deps += [ ":heapprofd_client_api" ]
  } else {
    deps += [ ":heapprofd_standalone_client" ]
  }
  if (start_daemons_for_testing) {
    defines = [ "PERFETTO_START_DAEMONS_FOR_TESTING" ]
  }
}

perfetto_fuzzer_test("unwinding_fuzzer") {
  testonly = true
  sources = [ "unwinding_fuzzer.cc" ]
  deps = [
    ":daemon",
    ":ring_buffer",
    ":wire_protocol",
    "../../../gn:default_deps",
    "../../base",
    "../../tracing/core",
    "../common:unwind_support",
  ]
}

perfetto_fuzzer_test("shared_ring_buffer_fuzzer") {
  testonly = true
  sources = [ "shared_ring_buffer_fuzzer.cc" ]
  deps = [
    ":ring_buffer",
    "../../../gn:default_deps",
    "../../base",
  ]
}

perfetto_fuzzer_test("shared_ring_buffer_write_fuzzer") {
  testonly = true
  sources = [ "shared_ring_buffer_write_fuzzer.cc" ]
  deps = [
    ":ring_buffer",
    "../../../gn:default_deps",
    "../../base",
  ]
}