#4267 use RTLD_DEFAULT in calls to dlsym per the man page closes[t:4267]

git-svn-id: file:///svn/toku/tokudb@37852 c7de825b-a66e-492c-adef-691d508d4ae1

linux/memory.c

@@ -36,7 +36,7 @@ toku_memory_startup(void) {
     // to get version and mmap threshold configuration.
     typedef int (*mallctl_fun_t)(const char *, void *, size_t *, void *, size_t);
     mallctl_fun_t mallctl_f;
-    mallctl_f = (mallctl_fun_t) dlsym(NULL, "mallctl");
+    mallctl_f = (mallctl_fun_t) dlsym(RTLD_DEFAULT, "mallctl");
     if (mallctl_f) { // jemalloc is loaded
         size_t version_length = sizeof status.mallocator_version;
         result = mallctl_f("version", &status.mallocator_version, &version_length, NULL, 0);

linux/tests/test-memory-status.c

@@ -2,8 +2,11 @@
 #include "memory.h"
 
 int main(void) {
+    toku_memory_startup();
     MEMORY_STATUS_S s;
     toku_memory_get_status(&s);
-    printf("tokudb mallocator: %s\n", s.mallocator_version);
+    printf("mallocator: %s\n", s.mallocator_version);
+    printf("mmap threshold: %" PRIu64 "\n", s.mmap_threshold);
+    toku_memory_shutdown();
     return 0;
 }