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f605f2d2ed
Adds a dummy mutex implementation for baremetal configurations. The provided implementation makes a single attempt to acquire the lock and asserts if it is unavailable. It does not perform interrupt masking or disable global interrupts, so this implementation does not support simultaneous multi-threaded environments including IRQs, and is only meant to prevent data corruption. Change-Id: Id122f890a37822c3b752b810e0e687f19f8c9dbd Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/45721 Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com> Pigweed-Auto-Submit: Prashanth Swaminathan <prashanthsw@google.com> Reviewed-by: Ewout van Bekkum <ewout@google.com>
80 lines
2.6 KiB
Plaintext
80 lines
2.6 KiB
Plaintext
# Copyright 2021 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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import("//build_overrides/pigweed.gni")
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import("$dir_pw_build/target_types.gni")
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import("$dir_pw_chrono/backend.gni")
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import("$dir_pw_docgen/docs.gni")
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config("public_include_path") {
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include_dirs = [ "public" ]
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visibility = [ ":*" ]
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}
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config("backend_config") {
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include_dirs = [ "public_overrides" ]
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visibility = [ ":*" ]
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}
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# This target provides the backend for pw::sync::InterruptSpinLock.
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# The provided implementation makes a single attempt to acquire the lock and
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# asserts if it is unavailable. It does not perform interrupt masking or disable
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# global interrupts, so this implementation does not support simultaneous
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# multi-threaded environments including IRQs, and is only meant to prevent
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# data corruption. This implementation is not yet set up to support hardware
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# multi-threading (SMP, SMT, etc).
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pw_source_set("interrupt_spin_lock") {
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public_configs = [
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":public_include_path",
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":backend_config",
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]
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public = [
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"public/pw_sync_baremetal/interrupt_spin_lock_inline.h",
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"public/pw_sync_baremetal/interrupt_spin_lock_native.h",
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"public_overrides/pw_sync_backend/interrupt_spin_lock_inline.h",
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"public_overrides/pw_sync_backend/interrupt_spin_lock_native.h",
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]
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public_deps = [
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"$dir_pw_assert",
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"$dir_pw_sync:interrupt_spin_lock.facade",
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"$dir_pw_sync:yield_core",
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]
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}
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# This target provides the backend for pw::sync::Mutex.
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# The provided implementation makes a single attempt to acquire the lock and
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# asserts if it is unavailable. This implementation is not yet set up to support
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# hardware multi-threading (SMP, SMT, etc).
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pw_source_set("mutex") {
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public_configs = [
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":public_include_path",
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":backend_config",
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]
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public = [
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"public/pw_sync_baremetal/mutex_inline.h",
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"public/pw_sync_baremetal/mutex_native.h",
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"public_overrides/pw_sync_backend/mutex_inline.h",
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"public_overrides/pw_sync_backend/mutex_native.h",
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]
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public_deps = [
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"$dir_pw_assert",
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"$dir_pw_sync:mutex.facade",
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]
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}
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pw_doc_group("docs") {
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sources = [ "docs.rst" ]
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}
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