More cleanup

Author: pablogsal

Objects/perf_trampoline.c

@@ -86,23 +86,23 @@ compile_trampoline(void)
 FILE *
 perf_map_open(pid_t pid)
 {
-    char filename[500];
+    char filename[100];
     snprintf(filename, sizeof(filename), "/tmp/perf-%d.map", pid);
     FILE *res = fopen(filename, "a");
     if (!res) {
-        fprintf(stderr, "Couldn't open %s: errno(%d)", filename, errno);
-        exit(0);
+        _Py_FatalErrorFormat(__func__, "Couldn't open %s: errno(%d)", filename, errno);
+        return NULL;
     }
     return res;
 }
 
 int
 perf_map_close(FILE *fp)
 {
-    if (fp)
+    if (fp) {
         return fclose(fp);
-    else
-        return 0;
+    }
+    return 0;
 }
 
 void
@@ -130,6 +130,9 @@ py_trampoline_evaluator(PyThreadState *ts, _PyInterpreterFrame *frame,
             return NULL;
         }
         FILE *pfile = perf_map_open(getpid());
+        if (pfile == NULL) {
+            return NULL;
+        }
         perf_map_write_entry(pfile, new_trampoline, code_arena.code_size,
                              PyUnicode_AsUTF8(co->co_qualname),
                              PyUnicode_AsUTF8(co->co_filename));