commit 9618d8a770149043adf88005f7d102d4e1f6ac35
author Ewout van Bekkum <ewout@google.com> Mon Nov 09 12:46:52 2020 -0800
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> Tue Dec 01 21:28:25 2020 +0000
tree fd94867cd958b992fea3168ce2ac5a5ac5b756e8
parent 8779bcd0e7459e9e0d8428bbbd8290de2fe6be73

pw_sync: Adds semaphores & mutexes

Adds the BinarySemaphore, CountingSemaphore, and Mutex to the
pw_sync module along with an STL backend for each.

Change-Id: I54a3a64e702202a319ed2c9068bf37412d3fd240
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/24241
Reviewed-by: Ewout van Bekkum <ewout@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Ewout van Bekkum <ewout@google.com>

pw_sync/BUILD

diff --git a/pw_sync/BUILD b/pw_sync/BUILD
index ceb60c6..18d1962 100644
--- a/pw_sync/BUILD
+++ b/pw_sync/BUILD
@@ -23,9 +23,105 @@
 licenses(["notice"])  # Apache License 2.0
 
 # TODO(pwbug/101): Need to add support for facades/backends to Bazel.
+PW_SYNC_BINARY_SEMAPHORE_BACKEND = "//pw_sync_stl:binary_semaphore"
+PW_SYNC_COUNTING_SEMAPHORE_BACKEND = "//pw_sync_stl:counting_semaphore"
+PW_SYNC_MUTEX_BACKEND = "//pw_sync_stl:mutex"
 PW_SYNC_SPIN_LOCK_BACKEND = "//pw_sync_stl:spin_lock"
 
 pw_cc_library(
+    name = "binary_semaphore_facade",
+    hdrs = [
+        "public/pw_sync/binary_semaphore.h",
+    ],
+    includes = ["public"],
+    srcs = [
+        "binary_semaphore.cc"
+    ],
+    deps = [
+        PW_SYNC_BINARY_SEMAPHORE_BACKEND + "_headers",
+        "//pw_chrono:system_clock",
+        "//pw_preprocessor",
+    ],
+)
+
+pw_cc_library(
+    name = "binary_semaphore",
+    deps = [
+        ":binary_semaphore_facade",
+        PW_SYNC_BINARY_SEMAPHORE_BACKEND + "_headers",
+    ],
+)
+
+pw_cc_library(
+    name = "binary_semaphore_backend",
+    deps = [
+       PW_SYNC_BINARY_SEMAPHORE_BACKEND,
+    ],
+)
+
+pw_cc_library(
+    name = "counting_semaphore_facade",
+    hdrs = [
+        "public/pw_sync/counting_semaphore.h",
+    ],
+    includes = ["public"],
+    srcs = [
+        "counting_semaphore.cc"
+    ],
+    deps = [
+        PW_SYNC_COUNTING_SEMAPHORE_BACKEND + "_headers",
+        "//pw_chrono:system_clock",
+        "//pw_preprocessor",
+    ],
+)
+
+pw_cc_library(
+    name = "counting_semaphore",
+    deps = [
+        ":counting_semaphore_facade",
+        PW_SYNC_COUNTING_SEMAPHORE_BACKEND + "_headers",
+    ],
+)
+
+pw_cc_library(
+    name = "counting_semaphore_backend",
+    deps = [
+       PW_SYNC_COUNTING_SEMAPHORE_BACKEND,
+    ],
+)
+
+pw_cc_library(
+    name = "mutex_facade",
+    hdrs = [
+        "public/pw_sync/mutex.h",
+    ],
+    includes = ["public"],
+    srcs = [
+        "mutex.cc"
+    ],
+    deps = [
+        PW_SYNC_MUTEX_BACKEND + "_headers",
+        "//pw_chrono:system_clock",
+        "//pw_preprocessor",
+    ],
+)
+
+pw_cc_library(
+    name = "mutex",
+    deps = [
+        ":mutex_facade",
+        PW_SYNC_MUTEX_BACKEND + "_headers",
+    ],
+)
+
+pw_cc_library(
+    name = "mutex_backend",
+    deps = [
+       PW_SYNC_MUTEX_BACKEND,
+    ],
+)
+
+pw_cc_library(
     name = "spin_lock_facade",
     hdrs = [
         "public/pw_sync/spin_lock.h",
@@ -64,6 +160,45 @@
 )
 
 pw_cc_test(
+    name = "binary_semaphore_facade_test",
+    srcs = [
+        "binary_semaphore_facade_test.cc",
+        "binary_semaphore_facade_test_c.c",
+    ],
+    deps = [
+        ":binary_semaphore",
+        "//pw_preprocessor",
+        "//pw_unit_test",
+    ],
+)
+
+pw_cc_test(
+    name = "counting_semaphore_facade_test",
+    srcs = [
+        "counting_semaphore_facade_test.cc",
+        "counting_semaphore_facade_test_c.c",
+    ],
+    deps = [
+        ":counting_semaphore",
+        "//pw_preprocessor",
+        "//pw_unit_test",
+    ],
+)
+
+pw_cc_test(
+    name = "mutex_facade_test",
+    srcs = [
+        "mutex_facade_test.cc",
+        "mutex_facade_test_c.c",
+    ],
+    deps = [
+        ":mutex",
+        "//pw_preprocessor",
+        "//pw_unit_test",
+    ],
+)
+
+pw_cc_test(
     name = "spin_lock_facade_test",
     srcs = [
         "spin_lock_facade_test.cc",