ext/fast_mmaped_file/mmap.h in prometheus-client-mmap-0.7.0.beta45.9 vs ext/fast_mmaped_file/mmap.h in prometheus-client-mmap-0.7.0.beta45.10

@@ -26,24 +26,25 @@
     int advice, flag;
     VALUE key;
     int semid, shmid;
     size_t len, real;
     off_t offset;
+    int fd;
     char *path, *template;
 } mm_mmap;
 
 typedef struct {
     int count;
     mm_mmap *t;
 } mm_ipc;
 
-#define GET_MMAP(obj, i_mm, t_modify)                                          \
-    Data_Get_Struct(obj, mm_ipc, i_mm);                                        \
-    if (!i_mm->t->path || i_mm->t->addr == 0 || i_mm->t->addr == MAP_FAILED) { \
-        rb_raise(rb_eIOError, "unmapped file");                                \
-    }                                                                          \
-    if ((t_modify & MM_MODIFY) && (i_mm->t->flag & MM_FROZEN)) {               \
-        rb_error_frozen("mmap");                                               \
+#define GET_MMAP(obj, i_mm, t_modify)                                                                 \
+    Data_Get_Struct(obj, mm_ipc, i_mm);                                                               \
+    if (!i_mm->t->path || i_mm->t->fd == 0 || i_mm->t->addr == NULL || i_mm->t->addr == MAP_FAILED) { \
+        rb_raise(rb_eIOError, "unmapped file");                                                       \
+    }                                                                                                 \
+    if ((t_modify & MM_MODIFY) && (i_mm->t->flag & MM_FROZEN)) {                                      \
+        rb_error_frozen("mmap");                                                                      \
     }
 
 VALUE mm_s_alloc(VALUE obj);
 VALUE mm_s_new(int argc, VALUE *argv, VALUE obj);
 VALUE mm_init(VALUE obj, VALUE fname);