are understood, too (us, ms, s, min, h, d, w, month, y). If it is not set or set
to 0, then the built-in default is used.
+* `$SYSTEMD_MEMPOOL=0` — if set the internal memory caching logic employed by
+ hash tables is turned off, and libc malloc() is used for all allocations.
+
systemctl:
* `$SYSTEMCTL_FORCE_BUS=1` — if set, do not connect to PID1's private D-Bus
#include <string.h>
#include "alloc-util.h"
-#include "hashmap.h"
+#include "env-util.h"
#include "fileio.h"
+#include "hashmap.h"
#include "macro.h"
#include "mempool.h"
#include "process-util.h"
memset(p, DIB_RAW_INIT, sizeof(dib_raw_t) * hi->n_direct_buckets);
}
+static bool use_pool(void) {
+ static int b = -1;
+
+ if (!is_main_thread())
+ return false;
+
+ if (b < 0)
+ b = getenv_bool("SYSTEMD_MEMPOOL") != 0;
+
+ return b;
+}
+
static struct HashmapBase *hashmap_base_new(const struct hash_ops *hash_ops, enum HashmapType type HASHMAP_DEBUG_PARAMS) {
HashmapBase *h;
const struct hashmap_type_info *hi = &hashmap_type_info[type];
- bool use_pool;
-
- use_pool = is_main_thread();
+ bool up;
- h = use_pool ? mempool_alloc0_tile(hi->mempool) : malloc0(hi->head_size);
+ up = use_pool();
+ h = up ? mempool_alloc0_tile(hi->mempool) : malloc0(hi->head_size);
if (!h)
return NULL;
h->type = type;
- h->from_pool = use_pool;
+ h->from_pool = up;
h->hash_ops = hash_ops ? hash_ops : &trivial_hash_ops;
if (type == HASHMAP_TYPE_ORDERED) {