Align the MPMC queue to pagesize

binaries/changelog.txt

@@ -31,3 +31,5 @@ Making the LF MPMC queue generic and in a seperate header file
 4.0: Implementing a semaphore in the LF MPMC queue to wake up consumers when there is items in the queue instead of spinning (busy waiting) or sleeping, this makes the queue spin only when the slots are transitionning (multiple consumers claiming the same slot)
 
 Making the MPMC queue platform agnostic
+
+Align the MPMC queue to pagesize

lf_mpmc.h

@@ -58,15 +58,13 @@ typedef struct {
 /* INIT */
 /* ----------------------------------------------------------- */
 static void mpmc_init(MPMCQueue *q, size_t max_capacity) {
-  if ((max_capacity & (max_capacity - 1)) != 0) {
-    fprintf(stderr, "capacity must be power of two\n");
-    exit(1);
-  }
 
   q->capacity = max_capacity;
   q->mask = max_capacity - 1;
 
-  size_t bytes = sizeof(MPMCSlot) * max_capacity;
+  u32 pagesize = plat_get_pagesize();
+
+  size_t bytes = ALIGN_UP_POW2(sizeof(MPMCSlot) * max_capacity, pagesize);
 
   q->slots = (MPMCSlot *)plat_mem_reserve(bytes);
 
@@ -75,12 +73,16 @@ static void mpmc_init(MPMCQueue *q, size_t max_capacity) {
     exit(1);
   }
 
-  q->commit_step = (64ull * 1024 * 1024) / sizeof(MPMCSlot);
+  u64 commit_bytes = pagesize;
+  commit_bytes = ALIGN_UP_POW2(commit_bytes, pagesize);
+
+  q->commit_step = commit_bytes / sizeof(MPMCSlot);
+
   atomic_flag_clear(&q->commit_lock);
 
   q->committed = q->commit_step;
 
-  plat_mem_commit(q->slots, q->commit_step * sizeof(MPMCSlot));
+  plat_mem_commit(q->slots, commit_bytes);
 
   for (size_t i = 0; i < q->committed; i++) {
     atomic_init(&q->slots[i].seq, i);