Add Tracing for Binder Caching
Test: perfetto -c <perfetto config>
Bug: 333854840
Change-Id: Iffb1e00f94722f60c85305e0596ce58b0df5a6da
diff --git a/libs/binder/BackendUnifiedServiceManager.cpp b/libs/binder/BackendUnifiedServiceManager.cpp
index 52b485a..37aaaf3 100644
--- a/libs/binder/BackendUnifiedServiceManager.cpp
+++ b/libs/binder/BackendUnifiedServiceManager.cpp
@@ -114,11 +114,30 @@
if (!kUseCache) {
return binder::Status::ok();
}
+ std::string traceStr;
+ if (atrace_is_tag_enabled(ATRACE_TAG_AIDL)) {
+ traceStr = "BinderCacheWithInvalidation::updateCache : " + serviceName;
+ }
+ binder::ScopedTrace aidlTrace(ATRACE_TAG_AIDL, traceStr.c_str());
+
if (service.getTag() == os::Service::Tag::binder) {
sp<IBinder> binder = service.get<os::Service::Tag::binder>();
- if (binder && mCacheForGetService->isClientSideCachingEnabled(serviceName) &&
- binder->isBinderAlive()) {
+ if (!binder) {
+ binder::ScopedTrace
+ aidlTrace(ATRACE_TAG_AIDL,
+ "BinderCacheWithInvalidation::updateCache failed: binder_null");
+ } else if (!binder->isBinderAlive()) {
+ binder::ScopedTrace aidlTrace(ATRACE_TAG_AIDL,
+ "BinderCacheWithInvalidation::updateCache failed: "
+ "isBinderAlive_false");
+ } else if (mCacheForGetService->isClientSideCachingEnabled(serviceName)) {
+ binder::ScopedTrace aidlTrace(ATRACE_TAG_AIDL,
+ "BinderCacheWithInvalidation::updateCache successful");
return mCacheForGetService->setItem(serviceName, binder);
+ } else {
+ binder::ScopedTrace aidlTrace(ATRACE_TAG_AIDL,
+ "BinderCacheWithInvalidation::updateCache failed: "
+ "caching_not_enabled");
}
}
return binder::Status::ok();
diff --git a/libs/binder/BackendUnifiedServiceManager.h b/libs/binder/BackendUnifiedServiceManager.h
index 47b2ec9..feb8470 100644
--- a/libs/binder/BackendUnifiedServiceManager.h
+++ b/libs/binder/BackendUnifiedServiceManager.h
@@ -18,6 +18,7 @@
#include <android/os/BnServiceManager.h>
#include <android/os/IServiceManager.h>
#include <binder/IPCThreadState.h>
+#include <binder/Trace.h>
#include <map>
#include <memory>
@@ -59,6 +60,12 @@
}
bool removeItem(const std::string& key, const sp<IBinder>& who) {
+ std::string traceStr;
+ uint64_t tag = ATRACE_TAG_AIDL;
+ if (atrace_is_tag_enabled(tag)) {
+ traceStr = "BinderCacheWithInvalidation::removeItem " + key;
+ }
+ binder::ScopedTrace aidlTrace(tag, traceStr.c_str());
std::lock_guard<std::mutex> lock(mCacheMutex);
if (auto it = mCache.find(key); it != mCache.end()) {
if (it->second.service == who) {
@@ -81,11 +88,22 @@
if (item->localBinder() == nullptr) {
status_t status = item->linkToDeath(deathRecipient);
if (status != android::OK) {
+ std::string traceStr;
+ uint64_t tag = ATRACE_TAG_AIDL;
+ if (atrace_is_tag_enabled(tag)) {
+ traceStr =
+ "BinderCacheWithInvalidation::setItem Failed LinkToDeath for service " +
+ key + " : " + std::to_string(status);
+ }
+ binder::ScopedTrace aidlTrace(tag, traceStr.c_str());
+
ALOGE("Failed to linkToDeath binder for service %s. Error: %d", key.c_str(),
status);
return binder::Status::fromStatusT(status);
}
}
+ binder::ScopedTrace aidlTrace(ATRACE_TAG_AIDL,
+ "BinderCacheWithInvalidation::setItem Successfully Cached");
std::lock_guard<std::mutex> lock(mCacheMutex);
Entry entry = {.service = item, .deathRecipient = deathRecipient};
mCache[key] = entry;