libbinder_ndk: Add APIs for lazy services
Add a way to register a lazy service, wait for the service, and check if
it was declared in vintf manifest.
Test: atest libbinder_ndk_unit_test
Bug: 149794667
Change-Id: I97f83de35ed7dd4923812c66ee6106b396e89031
diff --git a/libs/binder/ndk/service_manager.cpp b/libs/binder/ndk/service_manager.cpp
index d0b166d..6b2184e 100644
--- a/libs/binder/ndk/service_manager.cpp
+++ b/libs/binder/ndk/service_manager.cpp
@@ -20,6 +20,7 @@
#include "status_internal.h"
#include <binder/IServiceManager.h>
+#include <binder/LazyServiceRegistrar.h>
using ::android::defaultServiceManager;
using ::android::IBinder;
@@ -61,3 +62,33 @@
AIBinder_incStrong(ret.get());
return ret.get();
}
+binder_status_t AServiceManager_registerLazyService(AIBinder* binder, const char* instance) {
+ if (binder == nullptr || instance == nullptr) {
+ return STATUS_UNEXPECTED_NULL;
+ }
+
+ auto serviceRegistrar = android::binder::LazyServiceRegistrar::getInstance();
+ status_t status = serviceRegistrar.registerService(binder->getBinder(), instance);
+
+ return PruneStatusT(status);
+}
+AIBinder* AServiceManager_waitForService(const char* instance) {
+ if (instance == nullptr) {
+ return nullptr;
+ }
+
+ sp<IServiceManager> sm = defaultServiceManager();
+ sp<IBinder> binder = sm->waitForService(String16(instance));
+
+ sp<AIBinder> ret = ABpBinder::lookupOrCreateFromBinder(binder);
+ AIBinder_incStrong(ret.get());
+ return ret.get();
+}
+bool AServiceManager_isDeclared(const char* instance) {
+ if (instance == nullptr) {
+ return false;
+ }
+
+ sp<IServiceManager> sm = defaultServiceManager();
+ return sm->isDeclared(String16(instance));
+}