Keep track of dynamic buffer allocations.

src/dynbuf.c

@@ -17,6 +17,15 @@
 #include <string.h>
 #include <stdlib.h>
 
+static size_t NumMallocs = 0;
+static size_t BytesMalloced = 0;
+
+void DBufGetMallocStats(size_t *num_mallocs, size_t *bytes_malloced)
+{
+    *num_mallocs = NumMallocs;
+    *bytes_malloced = BytesMalloced;
+}
+
 /**********************************************************************
 %FUNCTION: DBufMakeRoom
 %ARGUMENTS:
@@ -45,6 +54,9 @@ static int DBufMakeRoom(DynamicBuffer *dbuf, size_t n)
     buf = malloc(size);
     if (!buf) return E_NO_MEM;
 
+    NumMallocs++;
+    BytesMalloced += size;
+
     /* Copy contents */
     strcpy(buf, dbuf->buffer);
 

src/dynbuf.h

@@ -29,6 +29,8 @@ int DBufPuts(DynamicBuffer *dbuf, char const *str);
 void DBufFree(DynamicBuffer *dbuf);
 int DBufGets(DynamicBuffer *dbuf, FILE *fp);
 
+void DBufGetMallocStats(size_t *num_mallocs, size_t *bytes_malloced);
+
 #define DBufValue(bufPtr) ((bufPtr)->buffer)
 #define DBufLen(bufPtr) ((bufPtr)->len)
 

src/main.c

@@ -62,12 +62,17 @@ exitfunc(void)
     /* Kill any execution-time-limiter process */
     unlimit_execution_time();
 
+    size_t num_mallocs, bytes_malloced;
+
     if (DebugFlag & DB_UNUSED_VARS) {
         DumpUnusedVars();
     }
     if (DebugFlag & DB_HASHSTATS) {
         fflush(stdout);
         fflush(ErrFp);
+        DBufGetMallocStats(&num_mallocs, &bytes_malloced);
+        fprintf(ErrFp, "DynBuf Mallocs: %lu mallocs; %lu bytes\n",
+                (unsigned long) num_mallocs, (unsigned long) bytes_malloced);
         fprintf(ErrFp, "Variable hash table statistics:\n");
         dump_var_hash_stats();