diff options
| -rw-r--r-- | core/jni/android_util_Binder.cpp | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/core/jni/android_util_Binder.cpp b/core/jni/android_util_Binder.cpp index 8bc52b874ae0..c19879713f2f 100644 --- a/core/jni/android_util_Binder.cpp +++ b/core/jni/android_util_Binder.cpp @@ -1305,103 +1305,6 @@ static jboolean android_os_BinderProxy_isBinderAlive(JNIEnv* env, jobject obj) return alive ? JNI_TRUE : JNI_FALSE; } -static int getprocname(pid_t pid, char *buf, size_t len) { - char filename[32]; - FILE *f; - - snprintf(filename, sizeof(filename), "/proc/%d/cmdline", pid); - f = fopen(filename, "re"); - if (!f) { - *buf = '\0'; - return 1; - } - if (!fgets(buf, len, f)) { - *buf = '\0'; - fclose(f); - return 2; - } - fclose(f); - return 0; -} - -static bool push_eventlog_string(char** pos, const char* end, const char* str) { - jint len = strlen(str); - int space_needed = 1 + sizeof(len) + len; - if (end - *pos < space_needed) { - ALOGW("not enough space for string. remain=%" PRIdPTR "; needed=%d", - end - *pos, space_needed); - return false; - } - **pos = EVENT_TYPE_STRING; - (*pos)++; - memcpy(*pos, &len, sizeof(len)); - *pos += sizeof(len); - memcpy(*pos, str, len); - *pos += len; - return true; -} - -static bool push_eventlog_int(char** pos, const char* end, jint val) { - int space_needed = 1 + sizeof(val); - if (end - *pos < space_needed) { - ALOGW("not enough space for int. remain=%" PRIdPTR "; needed=%d", - end - *pos, space_needed); - return false; - } - **pos = EVENT_TYPE_INT; - (*pos)++; - memcpy(*pos, &val, sizeof(val)); - *pos += sizeof(val); - return true; -} - -// From frameworks/base/core/java/android/content/EventLogTags.logtags: - -static const bool kEnableBinderSample = false; - -#define LOGTAG_BINDER_OPERATION 52004 - -static void conditionally_log_binder_call(int64_t start_millis, - IBinder* target, jint code) { - int duration_ms = static_cast<int>(uptimeMillis() - start_millis); - - int sample_percent; - if (duration_ms >= 500) { - sample_percent = 100; - } else { - sample_percent = 100 * duration_ms / 500; - if (sample_percent == 0) { - return; - } - if (sample_percent < (random() % 100 + 1)) { - return; - } - } - - char process_name[40]; - getprocname(getpid(), process_name, sizeof(process_name)); - String8 desc(target->getInterfaceDescriptor()); - - char buf[LOGGER_ENTRY_MAX_PAYLOAD]; - buf[0] = EVENT_TYPE_LIST; - buf[1] = 5; - char* pos = &buf[2]; - char* end = &buf[LOGGER_ENTRY_MAX_PAYLOAD - 1]; // leave room for final \n - if (!push_eventlog_string(&pos, end, desc.string())) return; - if (!push_eventlog_int(&pos, end, code)) return; - if (!push_eventlog_int(&pos, end, duration_ms)) return; - if (!push_eventlog_string(&pos, end, process_name)) return; - if (!push_eventlog_int(&pos, end, sample_percent)) return; - *(pos++) = '\n'; // conventional with EVENT_TYPE_LIST apparently. - android_bWriteLog(LOGTAG_BINDER_OPERATION, buf, pos - buf); -} - -// We only measure binder call durations to potentially log them if -// we're on the main thread. -static bool should_time_binder_calls() { - return (getpid() == gettid()); -} - static jboolean android_os_BinderProxy_transact(JNIEnv* env, jobject obj, jint code, jobject dataObj, jobject replyObj, jint flags) // throws RemoteException { @@ -1428,29 +1331,10 @@ static jboolean android_os_BinderProxy_transact(JNIEnv* env, jobject obj, ALOGV("Java code calling transact on %p in Java object %p with code %" PRId32 "\n", target, obj, code); - - bool time_binder_calls; - int64_t start_millis; - if (kEnableBinderSample) { - // Only log the binder call duration for things on the Java-level main thread. - // But if we don't - time_binder_calls = should_time_binder_calls(); - - if (time_binder_calls) { - start_millis = uptimeMillis(); - } - } - //printf("Transact from Java code to %p sending: ", target); data->print(); status_t err = target->transact(code, *data, reply, flags); //if (reply) printf("Transact from Java code to %p received: ", target); reply->print(); - if (kEnableBinderSample) { - if (time_binder_calls) { - conditionally_log_binder_call(start_millis, target, code); - } - } - if (err == NO_ERROR) { return JNI_TRUE; } else if (err == UNKNOWN_TRANSACTION) { |