Add d_m3MaxLinearMemoryPages

source/m3_config.h

@@ -24,6 +24,10 @@
 #   define d_m3MaxFunctionStackHeight           2000    // TODO: comment on upper limit
 # endif
 
+# ifndef d_m3MaxLinearMemoryPages
+#   define d_m3MaxLinearMemoryPages             32768
+# endif
+
 # ifndef d_m3MaxFunctionSlots
 #   define d_m3MaxFunctionSlots                 ((d_m3MaxFunctionStackHeight)*2)
 # endif

source/m3_env.c

@@ -372,7 +372,11 @@ M3Result  ResizeMemory  (IM3Runtime io_runtime, u32 i_numPages)
     {
         size_t numPageBytes = numPagesToAlloc * d_m3MemPageSize;
 
-        // Limit the amount of memory that gets allocated
+#if d_m3MaxLinearMemoryPages > 0
+        _throwif("linear memory limitation exceeded", numPagesToAlloc > d_m3MaxLinearMemoryPages);
+#endif
+
+        // Limit the amount of memory that gets actually allocated
         if (io_runtime->memoryLimit) {
             numPageBytes = M3_MIN (numPageBytes, io_runtime->memoryLimit);
         }