From 46986a4f02c6f9919bbd75981948b26782194527 Mon Sep 17 00:00:00 2001
From: Dennis Shen <dzshen@google.com>
Date: Fri, 20 Sep 2024 13:15:56 +0000
Subject: [PATCH] aconfig: update cpp codegen

Use access system call to check existence of a file to reduce the cost.

Change-Id: Id64b419db81b2f8ac923b49f7293ee8a54aa78ca
---
 tools/aconfig/aconfig/templates/cpp_source_file.template | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/aconfig/aconfig/templates/cpp_source_file.template b/tools/aconfig/aconfig/templates/cpp_source_file.template
index 623034a87b..852b905f32 100644
--- a/tools/aconfig/aconfig/templates/cpp_source_file.template
+++ b/tools/aconfig/aconfig/templates/cpp_source_file.template
@@ -2,7 +2,7 @@
 
 {{ if allow_instrumentation }}
 {{ if readwrite- }}
-#include <sys/stat.h>
+#include <unistd.h>
 #include "aconfig_storage/aconfig_storage_read_api.hpp"
 #include <android/log.h>
 #define LOG_TAG "aconfig_cpp_codegen"
@@ -78,8 +78,7 @@ namespace {cpp_namespace} \{
             , flag_value_file_(nullptr)
             , read_from_new_storage_(false) \{
 
-            struct stat buffer;
-            if (stat("/metadata/aconfig/boot/enable_only_new_storage", &buffer) == 0) \{
+            if (access("/metadata/aconfig/boot/enable_only_new_storage", F_OK) == 0) \{
                read_from_new_storage_ = true;
             }