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|
# Copyright (C) 2019 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.
load("@perfetto_cfg//:perfetto_cfg.bzl", "PERFETTO_CONFIG")
load("@perfetto//bazel:proto_gen.bzl", "proto_gen")
# +----------------------------------------------------------------------------+
# | Base C++ rules. |
# +----------------------------------------------------------------------------+
def default_cc_args():
return {
"deps": PERFETTO_CONFIG.deps.build_config,
"copts": [],
"includes": ["include"],
"linkopts": select({
"@perfetto//bazel:os_linux": ["-ldl", "-lrt"],
"@perfetto//bazel:os_osx": [],
"@perfetto//bazel:os_windows": [],
"//conditions:default": ["-ldl"],
}),
}
def perfetto_cc_library(**kwargs):
args = _merge_dicts(default_cc_args(), kwargs)
if not _rule_override("cc_library", **args):
native.cc_library(**args)
def perfetto_cc_binary(**kwargs):
args = _merge_dicts(default_cc_args(), kwargs)
if not _rule_override("cc_binary", **args):
native.cc_binary(**args)
def perfetto_py_binary(**kwargs):
if not _rule_override("py_binary", **kwargs):
native.py_binary(**kwargs)
# +----------------------------------------------------------------------------+
# | Proto-related rules |
# +----------------------------------------------------------------------------+
def perfetto_proto_library(**kwargs):
if not _rule_override("proto_library", **kwargs):
native.proto_library(**kwargs)
def perfetto_cc_proto_library(**kwargs):
if not _rule_override("cc_proto_library", **kwargs):
native.cc_proto_library(**kwargs)
def perfetto_java_proto_library(**kwargs):
if not _rule_override("java_proto_library", **kwargs):
native.java_proto_library(**kwargs)
# +----------------------------------------------------------------------------+
# | Misc rules. |
# +----------------------------------------------------------------------------+
# Unlike all the other rules, this is an noop by default because Bazel does not
# support gensignature.
def perfetto_gensignature_internal_only(**kwargs):
_rule_override("gensignature_internal_only", **kwargs)
# Generates .pbzero.{cc,h} from .proto(s). We deliberately do NOT generate
# conventional .pb.{cc,h} from here as protozero gen sources do not have any
# dependency on libprotobuf.
def perfetto_cc_protozero_library(name, deps, **kwargs):
if _rule_override(
"cc_protozero_library",
name = name,
deps = deps,
**kwargs
):
return
proto_gen(
name = name + "_src",
deps = deps,
suffix = "pbzero",
plugin = PERFETTO_CONFIG.root + ":protozero_plugin",
protoc = PERFETTO_CONFIG.deps.protoc[0],
root = PERFETTO_CONFIG.root,
)
native.filegroup(
name = name + "_h",
srcs = [":" + name + "_src"],
output_group = "h",
)
perfetto_cc_library(
name = name,
srcs = [":" + name + "_src"],
hdrs = [":" + name + "_h"],
deps = [PERFETTO_CONFIG.root + ":libprotozero"],
**kwargs
)
# Generates .ipc.{cc,h} and .pb.{cc.h} from .proto(s). The IPC sources depend
# on .pb.h so we need to generate also the standard protobuf sources here.
def perfetto_cc_ipc_library(name, deps, **kwargs):
if _rule_override("cc_ipc_library", name = name, deps = deps, **kwargs):
return
# Takes care of generating .pb.{cc,h}.
perfetto_cc_proto_library(name = name + "_pb", deps = deps)
# Generates .ipc.{cc,h}.
proto_gen(
name = name + "_src",
deps = deps,
suffix = "ipc",
plugin = PERFETTO_CONFIG.root + ":ipc_plugin",
protoc = PERFETTO_CONFIG.deps.protoc[0],
root = PERFETTO_CONFIG.root,
)
native.filegroup(
name = name + "_h",
srcs = [":" + name + "_src"],
output_group = "h",
)
perfetto_cc_library(
name = name,
srcs = [":" + name + "_src"],
hdrs = [":" + name + "_h"],
deps = [
":" + name + "_pb",
# Generated .ipc.{cc,h} depend on this.
PERFETTO_CONFIG.root + ":perfetto_ipc",
# Generated .pb.{cc,h} depend on this.
] + PERFETTO_CONFIG.deps.protobuf_lite,
**kwargs
)
# Generates .gen.{cc,h} from .proto(s).
def perfetto_cc_protocpp_library(name, deps, **kwargs):
if _rule_override(
"cc_protocpp_library",
name = name,
deps = deps,
**kwargs
):
return
# A perfetto_cc_protocpp_library has two types of dependencies:
# 1. Exactly one dependency on a proto_library target. This defines the
# .proto sources for the target
# 2. Zero or more deps on other perfetto_cc_protocpp_library targets. This
# to deal with the case of foo.proto including common.proto from another
# target.
_proto_deps = [d for d in deps if d.endswith("_protos")]
_cc_deps = [d for d in deps if d not in _proto_deps]
proto_gen(
name = name + "_gen",
deps = _proto_deps,
suffix = "gen",
plugin = PERFETTO_CONFIG.root + ":cppgen_plugin",
protoc = PERFETTO_CONFIG.deps.protoc[0],
root = PERFETTO_CONFIG.root,
)
native.filegroup(
name = name + "_gen_h",
srcs = [":" + name + "_gen"],
output_group = "h",
)
perfetto_cc_library(
name = name,
srcs = [":" + name + "_gen"],
hdrs = [":" + name + "_gen_h"],
deps = [
PERFETTO_CONFIG.root + ":libprotozero"
] + _cc_deps,
**kwargs
)
# +----------------------------------------------------------------------------+
# | Misc utility functions |
# +----------------------------------------------------------------------------+
def _rule_override(rule_name, **kwargs):
overrides = getattr(PERFETTO_CONFIG, "rule_overrides", struct())
overridden_rule = getattr(overrides, rule_name, None)
if overridden_rule:
overridden_rule(**kwargs)
return True
return False
def _merge_dicts(*args):
res = {}
for arg in args:
for k, v in arg.items():
if type(v) == "string":
res[k] = v
elif type(v) == "list" or type(v) == "select":
res[k] = res.get(k, []) + v
else:
fail("key type not supported: " + type(v))
return res
|
