zdump: replace atomic refcount with atomic int
(Atomic) refcounting was introduced in glib2.58.
We want to support v2.56 as well, so replace it with int and the atomic
operations introduced in glib 2.4.
Fixes:
@@ -674,7 +674,7 @@ struct _storage_state_mmap {
size_t mapped_size;
pv_tweak_component_t *tweak_components;
size_t num_tweaks;
- gatomicrefcount ref_count;
+ int ref_count;
};
storage_state_mmap_t *storage_state_mmap_new(const int fd, const size_t file_size, const u64 offset,
@@ -733,14 +733,14 @@ storage_state_mmap_t *storage_state_mmap_new(const int fd, const size_t file_siz
ret->tweak_components = (pv_tweak_component_t *)(ptr + in_page_offset);
ret->num_tweaks = tweak_components_cnt;
ret->mapped_size = mmapped_size;
- g_atomic_ref_count_init(&ret->ref_count);
+ ret->ref_count = 1;
return g_steal_pointer(&ret);
}
storage_state_mmap_t *storage_state_mmap_ref(storage_state_mmap_t *storage_state)
{
g_assert(storage_state);
- g_atomic_ref_count_inc(&storage_state->ref_count);
+ g_atomic_int_inc(&storage_state->ref_count);
return storage_state;
}
@@ -748,7 +748,7 @@ void storage_state_mmap_unref(storage_state_mmap_t *storage_state)
{
if (!storage_state)
return;
- if (storage_state->ref_count && !g_atomic_ref_count_dec(&storage_state->ref_count))
+ if (storage_state->ref_count && !g_atomic_int_dec_and_test(&storage_state->ref_count))
return;
if (storage_state->first_page_ptr) {
int rc = munmap(storage_state->first_page_ptr, storage_state->mapped_size);
