only call get_server_exec_path() once

Author: ngxson

tools/server/server-models.cpp

@@ -140,6 +140,7 @@ server_models::server_models(
         int argc,
         char ** argv,
         char ** envp) : base_params(params) {
+    server_binary_path = get_server_exec_path().string();
     for (int i = 0; i < argc; i++) {
         base_args.push_back(std::string(argv[i]));
     }
@@ -383,7 +384,7 @@ void server_models::load(const std::string & name, bool auto_load) {
         }
 
         // set executable path
-        child_args[0] = get_server_exec_path().string();
+        child_args[0] = server_binary_path;
 
         // set model args
         add_or_replace_arg(child_args, "--port", std::to_string(inst.meta.port));

tools/server/server-models.h

@@ -84,6 +84,7 @@ struct server_models {
     common_params base_params;
     std::vector<std::string> base_args;
     std::vector<std::string> base_env;
+    std::string server_binary_path;
 
     void update_meta(const std::string & name, const server_model_meta & meta);