From 890cda3a7afdc72b3de11e784774bbdaf9d810a1 Mon Sep 17 00:00:00 2001
From: dzin <2363448374@qq.com>
Date: Tue, 10 Jun 2025 19:57:48 +0800
Subject: [PATCH 1/2] nwebspawn prelaod render lib

Signed-off-by: dzin <2363448374@qq.com>
---
 modules/nweb_adapter/nwebspawn_adapter.cpp | 55 ++++++++++++++++++++++
 nwebspawn.cfg                              |  1 -
 2 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/modules/nweb_adapter/nwebspawn_adapter.cpp b/modules/nweb_adapter/nwebspawn_adapter.cpp
index 6d0ae273..291dc4fc 100644
--- a/modules/nweb_adapter/nwebspawn_adapter.cpp
+++ b/modules/nweb_adapter/nwebspawn_adapter.cpp
@@ -29,6 +29,7 @@
 
 #include "appspawn_hook.h"
 #include "appspawn_manager.h"
+#include "parameter.h"
 
 #ifdef WITH_SECCOMP
 #include "seccomp_policy.h"
@@ -49,6 +50,17 @@ namespace {
     const std::string ARK_WEB_RENDER_LIB_NAME = "libarkweb_render.so";
     const std::string WEB_ENGINE_LIB_NAME = "libweb_engine.so";
     const std::string WEB_RENDER_LIB_NAME = "libnweb_render.so";
+    const std::string ARK_WEB_ENGINE_LIB_PRELOAD_PATH =
+        "/data/app/el1/bundle/public/com.huawei.hmos.arkwebcore/libs/arm64";
+    const std::string OHOS_ADPT_GLUE_SRC_LIB_PATH =
+        "/system/lib64/libohos_adapter_glue_source.z.so";
+
+typedef enum {
+    PRELOAD_NO = 0,         // 不预加载
+    PRELOAD_PARTIAL = 1,    // 只预加载libohos_adapter_glue_source.z.so
+    PRELOAD_FULL = 2        // 预加载libohos_adapter_glue_source.z.so和libarkweb_engine.so
+} RenderPreLoadMode;
+
 }  // namespace
 
 static bool SetSeccompPolicyForRenderer(void *nwebRenderHandle)
@@ -148,6 +160,37 @@ APPSPAWN_STATIC int RunChildProcessor(AppSpawnContent *content, AppSpawnClient *
     return 0;
 }
 
+static void PreLoadArkWebEngineLib()
+{
+    Dl_namespace dlns;
+    Dl_namespace ndkns;
+    dlns_init(&dlns, "nweb_ns");
+    dlns_create(&dlns, ARK_WEB_ENGINE_LIB_PRELOAD_PATH.c_str());
+    dlns_get("ndk", &ndkns);
+    dlns_inherit(&dlns, &ndkns, "allow_all_shared_libs");
+    void *webEngineHandle = dlopen_ns(&dlns, ARK_WEB_ENGINE_LIB_NAME.c_str(), RTLD_NOW | RTLD_GLOBAL);
+    if (!webEngineHandle) {
+        APPSPAWN_LOGE("Fail to dlopen libarkweb_engine.so, errno: %{public}d", errno);
+    }
+}
+
+static void PreLoadOHOSAdptGlueSrcLib()
+{
+    void *ohosAdptGlueSrcHandle = dlopen(OHOS_ADPT_GLUE_SRC_LIB_PATH.c_str(), RTLD_NOW | RTLD_GLOBAL);
+    if (!ohosAdptGlueSrcHandle) {
+        APPSPAWN_LOGE("Fail to dlopen libohos_adapter_glue_source.z.so, errno: %{public}d", errno);
+    }
+}
+
+static int GetSysParamPreLoadMode()
+{
+    const int BUFFER_LEN = 128;
+    char preLoadMode[BUFFER_LEN] = {0};
+    GetParameter("const.startup.nwebspawn.preloadMode", "0", preLoadMode, BUFFER_LEN);
+    int ret = std::atoi(preLoadMode);
+    return ret;
+}
+
 static int PreLoadNwebSpawn(AppSpawnMgr *content)
 {
     APPSPAWN_LOGI("PreLoadNwebSpawn %{public}d", IsNWebSpawnMode(content));
@@ -156,6 +199,18 @@ static int PreLoadNwebSpawn(AppSpawnMgr *content)
     }
     // register
     RegChildLooper(&content->content, RunChildProcessor);
+
+    // preload render lib
+    int preloadMode = GetSysParamPreLoadMode();
+    APPSPAWN_LOGI("NwebSpawn preload render lib mode: %{public}d", preloadMode);
+    if (preloadMode == PRELOAD_PARTIAL) {
+        PreLoadOHOSAdptGlueSrcLib();
+    }
+    if (preloadMode == PRELOAD_FULL) {
+        PreLoadArkWebEngineLib();
+        PreLoadOHOSAdptGlueSrcLib();
+    }
+
     return 0;
 }
 
diff --git a/nwebspawn.cfg b/nwebspawn.cfg
index 7b41723f..f29e3c89 100644
--- a/nwebspawn.cfg
+++ b/nwebspawn.cfg
@@ -21,7 +21,6 @@
                 "option" : [
                 ]
             }],
-            "start-mode" : "boot",
             "sandbox" : 0,
             "secon" : "u:r:nwebspawn:s0"
         }
-- 
Gitee


From 1a1020f1b7abdaf9a2fd5949939463ea500cbb54 Mon Sep 17 00:00:00 2001
From: dzin <2363448374@qq.com>
Date: Thu, 12 Jun 2025 10:37:43 +0800
Subject: [PATCH 2/2] change buffer_len

Signed-off-by: dzin <2363448374@qq.com>
---
 modules/nweb_adapter/nwebspawn_adapter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/nweb_adapter/nwebspawn_adapter.cpp b/modules/nweb_adapter/nwebspawn_adapter.cpp
index 291dc4fc..c8562fa1 100644
--- a/modules/nweb_adapter/nwebspawn_adapter.cpp
+++ b/modules/nweb_adapter/nwebspawn_adapter.cpp
@@ -184,7 +184,7 @@ static void PreLoadOHOSAdptGlueSrcLib()
 
 static int GetSysParamPreLoadMode()
 {
-    const int BUFFER_LEN = 128;
+    const int BUFFER_LEN = 8;
     char preLoadMode[BUFFER_LEN] = {0};
     GetParameter("const.startup.nwebspawn.preloadMode", "0", preLoadMode, BUFFER_LEN);
     int ret = std::atoi(preLoadMode);
-- 
Gitee