X-Git-Url: https://pd.if.org/git/?p=nbds;a=blobdiff_plain;f=runtime%2Fmem.c;h=708ef22ed94f5526b1b5cb23de73b1f21c8d73fc;hp=e46eb7efbd8bf8278ba786666012e753bf6e9650;hb=010e49988a8b12f78053c387b3798763b4e8df18;hpb=053576b00e7d37f19ce99f033e9981761d647c1f

diff --git a/runtime/mem.c b/runtime/mem.c
index e46eb7e..708ef22 100644
--- a/runtime/mem.c
+++ b/runtime/mem.c
@@ -62,6 +62,7 @@ void mem_init (void) {
 //
 // TODO: maybe we want to munmap() larger size blocks to reclaim virtual address space?
 void nbd_free (void *x) {
+    assert(x);
     LOCALIZE_THREAD_LOCAL(tid_, int);
     block_t  *b = (block_t *)x;
     assert(((size_t)b >> REGION_SCALE) < ((1 << HEADER_REGION_SCALE) / sizeof(header_t)));
@@ -88,6 +89,7 @@ void nbd_free (void *x) {
 // on the private free list. If we didn't find any blocks on the public free lists, allocate a new
 // region, break it up into blocks and put them on the private free list.
 void *nbd_malloc (size_t n) {
+    assert(n);
     LOCALIZE_THREAD_LOCAL(tid_, int);
     if (n < sizeof(block_t)) {
         n = sizeof(block_t);
@@ -111,9 +113,9 @@ void *nbd_malloc (size_t n) {
                 uint32_t count = pri->count;
                 pri->count = 0;
                 // If our private list is empty and we haven't gotten at least half a region's worth 
-                // of block's from our public lists, we break open a new region. This guarentees 
-                // that we are amortizing the cost of accessing our public lists accross enough 
-                // nbd_malloc() calls.
+                // of block's from our public lists, we allocate a new region. This guarentees that
+                // we amortize the cost of accessing our public lists accross enough nbd_malloc() 
+                // calls.
                 uint32_t min_count = b_scale > REGION_SCALE ? 1 << (b_scale-REGION_SCALE-1) : 1;
                 if (count < min_count) {
                     char  *region = get_new_region(b_scale);