do not destroy proxy lib pool before umf lib

Author: bratpiorka

src/utils/utils_common.h

@@ -18,6 +18,8 @@
 #include <umf/base.h>
 #include <umf/memory_provider.h>
 
+#include "utils_load_library.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -79,6 +81,15 @@ static inline int utils_env_var_has_str(const char *envvar, const char *str) {
 
 // check if we are running in the proxy library
 static inline int utils_is_running_in_proxy_lib(void) {
+    // check if the proxy library is loaded using dlopen()
+    void *proxy_lib_handle =
+        utils_open_library("libumf_proxy.so", UMF_UTIL_OPEN_LIBRARY_NO_LOAD);
+    if (proxy_lib_handle) {
+        utils_close_library(proxy_lib_handle);
+        return 1;
+    }
+
+    // check if the proxy library is loaded using LD_PRELOAD
     return utils_env_var_get_str("LD_PRELOAD", "libumf_proxy.so") ? 1 : 0;
 }
 

src/utils/utils_load_library.c

@@ -79,10 +79,16 @@ void *utils_open_library(const char *filename, int userFlags) {
         LOG_FATAL("dlopen(%s) failed with error: %s", filename, dlerror());
     }
 
+    LOG_DEBUG("Opened library %s with handle %p", filename, handle);
+
     return handle;
 }
 
-int utils_close_library(void *handle) { return dlclose(handle); }
+int utils_close_library(void *handle) {
+    LOG_DEBUG("Closing library handle %p", handle);
+
+    return dlclose(handle);
+}
 
 void *utils_get_symbol_addr(void *handle, const char *symbol,
                             const char *libname) {