Move some code.

[apps/pfixtools.git] / common / array.h

diff --git a/common/array.h b/common/array.h
index 55883d2..4a5b88d 100644 (file)
--- a/common/array.h
+++ b/common/array.h
@@ -111,9 +111,9 @@
         array_ensure_capacity_delta(array, 1);                                 \
         (array).data[(array).len++] = (obj);                                   \
     } while (0)
-#define array_append(array, objs, len)                                         \
+#define array_append(array, objs, Len)                                         \
     do {                                                                       \
-        const typeof((array).len) __len = (len);                               \
+        const typeof((array).len) __len = (Len);                               \
         array_ensure_capacity_delta(array, __len);                             \
         memcpy((array).data + (array).len, objs,                               \
                __len * sizeof(*(array).data));                                 \
@@ -134,17 +134,24 @@
 #define array_ensure_capacity_delta(array, delta)                              \
     array_ensure_capacity(array, (array).len + (delta))
 #define array_ensure_exact_capacity(array, goal)                               \
-    if (array_size(array) < (goal)) {                                          \
+    if ((array).size < (goal)) {                                               \
         array_ensure_can_edit(array);                                          \
         p_allocgrow(&(array).data, (goal), &(array).size);                     \
     }
-#define array_adjust(array)                                                    \
+#define array_shrink(array, cap)                                               \
     do {                                                                       \
         array_ensure_can_edit(array);                                          \
-        p_shrink(&(array).data, (array).len, &(array).size);                   \
+        if ((cap) < (array).size && (array).size != (array).len) {             \
+            p_shrink(&(array).data, MAX((array).len, (cap)), &(array).size);   \
+        }                                                                      \
     } while (0)
-#define array_elt(array, n) (array).data[(n)]
-#define array_ptr(array, n) (array).data + (n)
+#define array_adjust(array) array_shrink(array, 0)
+
+#define array_elt(array, n) ((array).data[(n)])
+#define array_last(array) array_elt(array, (array).len - 1)
+#define array_pop_last(array) array_elt(array, --((array).len))
+
+#define array_ptr(array, n) ((array).data + (n))
 
 #define foreach(var, array)                                                    \
     for (uint32_t __Ai = 0 ; __Ai < (array).len ; ++__Ai) {                    \
@@ -160,19 +167,25 @@
         array_wipe(array);                                                     \
     } while (0)
 
+#define array_len(array) (array).len
+#define array_size(array) (array).size
+#define array_elt_len(array) sizeof(*(array).data)
+#define array_byte_len(array) ((array).len * array_elt_len(array))
+
 #define array_lock(array)                                                      \
-    ((array).locked ||                                                         \
-        (mlock((array).data, (array).len * sizeof(*(array).data)) == 0         \
+    ((array).locked                                                            \
+     || (mlock((array).data, array_byte_len(array)) == 0                       \
          && ((array).locked = true)))
 #define array_unlock(array)                                                    \
     if ((array).locked) {                                                      \
-        (void)munlock((array).data, (array).len * sizeof(*(array).data));      \
+        (void)munlock((array).data, array_byte_len(array));                    \
         (array).locked = false;                                                \
     }
 
 ARRAY(char)
 ARRAY(int)
 ARRAY(bool)
+ARRAY(uint16_t)
 ARRAY(uint32_t)
 
 PARRAY(void)