libbinder_ndk: AServiceManager_checkService # apex
Feature parity, for faster loading times, etc..
Bug: N/A (requested for use in libnetd_resolv)
Test: ./runtests.sh, noting specifically:
[ RUN ] NdkBinder.CheckServiceThatDoesntExist
[ OK ] NdkBinder.CheckServiceThatDoesntExist (0 ms)
[ RUN ] NdkBinder.CheckServiceThatDoesExist
[ OK ] NdkBinder.CheckServiceThatDoesExist (0 ms)
Change-Id: I36b2a7420f5dd374e6b60898a778bbcedb9bd406
diff --git a/libs/binder/ndk/include_apex/android/binder_manager.h b/libs/binder/ndk/include_apex/android/binder_manager.h
index 80b6c07..055c79b 100644
--- a/libs/binder/ndk/include_apex/android/binder_manager.h
+++ b/libs/binder/ndk/include_apex/android/binder_manager.h
@@ -33,6 +33,15 @@
binder_status_t AServiceManager_addService(AIBinder* binder, const char* instance);
/**
+ * Gets a binder object with this specific instance name. Will return nullptr immediately if the
+ * service is not available This also implicitly calls AIBinder_incStrong (so the caller of this
+ * function is responsible for calling AIBinder_decStrong).
+ *
+ * \param instance identifier of the service used to lookup the service.
+ */
+__attribute__((warn_unused_result)) AIBinder* AServiceManager_checkService(const char* instance);
+
+/**
* Gets a binder object with this specific instance name. Blocks for a couple of seconds waiting on
* it. This also implicitly calls AIBinder_incStrong (so the caller of this function is responsible
* for calling AIBinder_decStrong).
diff --git a/libs/binder/ndk/libbinder_ndk.map.txt b/libs/binder/ndk/libbinder_ndk.map.txt
index f0d25f7..655f4d5 100644
--- a/libs/binder/ndk/libbinder_ndk.map.txt
+++ b/libs/binder/ndk/libbinder_ndk.map.txt
@@ -91,6 +91,7 @@
ABinderProcess_setThreadPoolMaxThreadCount; # apex
ABinderProcess_startThreadPool; # apex
AServiceManager_addService; # apex
+ AServiceManager_checkService; # apex
AServiceManager_getService; # apex
local:
*;
diff --git a/libs/binder/ndk/service_manager.cpp b/libs/binder/ndk/service_manager.cpp
index 9ddc555..d0b166d 100644
--- a/libs/binder/ndk/service_manager.cpp
+++ b/libs/binder/ndk/service_manager.cpp
@@ -37,6 +37,18 @@
status_t status = sm->addService(String16(instance), binder->getBinder());
return PruneStatusT(status);
}
+AIBinder* AServiceManager_checkService(const char* instance) {
+ if (instance == nullptr) {
+ return nullptr;
+ }
+
+ sp<IServiceManager> sm = defaultServiceManager();
+ sp<IBinder> binder = sm->checkService(String16(instance));
+
+ sp<AIBinder> ret = ABpBinder::lookupOrCreateFromBinder(binder);
+ AIBinder_incStrong(ret.get());
+ return ret.get();
+}
AIBinder* AServiceManager_getService(const char* instance) {
if (instance == nullptr) {
return nullptr;
diff --git a/libs/binder/ndk/test/main_client.cpp b/libs/binder/ndk/test/main_client.cpp
index c159d71..bff601e 100644
--- a/libs/binder/ndk/test/main_client.cpp
+++ b/libs/binder/ndk/test/main_client.cpp
@@ -35,6 +35,19 @@
// EXPECT_EQ(nullptr, foo.get());
// }
+TEST(NdkBinder, CheckServiceThatDoesntExist) {
+ AIBinder* binder = AServiceManager_checkService("asdfghkl;");
+ ASSERT_EQ(nullptr, binder);
+}
+
+TEST(NdkBinder, CheckServiceThatDoesExist) {
+ AIBinder* binder = AServiceManager_checkService(kExistingNonNdkService);
+ EXPECT_NE(nullptr, binder);
+ EXPECT_EQ(STATUS_OK, AIBinder_ping(binder));
+
+ AIBinder_decStrong(binder);
+}
+
TEST(NdkBinder, DoubleNumber) {
sp<IFoo> foo = IFoo::getService(IFoo::kSomeInstanceName);
ASSERT_NE(foo, nullptr);