Let memory allocators trap by default when attempting to allocate beyond capacity.

1 files changed, 11 insertions, 0 deletions

diff --git a/mempool/src/mempool.c b/mempool/src/mempool.c
index 1100dad..b09038b 100644
--- a/mempool/src/mempool.c
+++ b/mempool/src/mempool.c
@@ -1,5 +1,7 @@
 #include "mempool.h"
 
+#include <cassert.h>
+
 #include <stdlib.h>
 #include <string.h>
 
@@ -24,6 +26,7 @@ bool mempool_make_(
   pool->num_blocks       = num_blocks;
   pool->head             = 0;
   pool->used             = 0;
+  pool->trap             = true;
 
   // Initialize blocks and block info.
   if (!block_info) {
@@ -74,6 +77,9 @@ void* mempool_alloc_(mempool* pool) {
 
   BlockInfo* head = &pool->block_info[pool->head];
   if (head->used) {
+    if (pool->trap) {
+      FAIL("mempool allocation failed, increase the pool's capacity.");
+    }
     return 0; // Pool is full.
   }
 
@@ -134,3 +140,8 @@ size_t mempool_capacity_(const mempool* pool) {
   assert(pool);
   return pool->num_blocks * pool->block_size_bytes;
 }
+
+void mempool_enable_traps_(mempool* pool, bool enable) {
+  assert(pool);
+  pool->trap = enable;
+}