1 files changed, 10 insertions, 4 deletions
diff --git a/fastwriter.c b/fastwriter.c
index e812681..08722fa 100644
--- a/fastwriter.c
+++ b/fastwriter.c
@@ -15,11 +15,17 @@
 
 #include <fcntl.h>
 
-
 #include "private.h"
 #include "default.h"
 #include "sysinfo.h"
 
+#ifdef USE_CUSTOM_MEMCPY
+# include "memcpy.h"
+#else /* USE_CUSTOM_MEMCPY */
+# define fast_memcpy memcpy
+#endif /* USE_CUSTOM_MEMCPY */
+
+
 fastwriter_t *fastwriter_init(const char *fs, fastwriter_flags_t flags) {
     fastwriter_t *ctx;
     
@@ -275,11 +281,11 @@ int fastwriter_push(fastwriter_t *ctx, size_t size, const void *data) {
     if (part1 < size) {
 	    // tail < pos (we have checked for free space)
 	end = size - part1;
-	memcpy(ctx->buffer + ctx->pos, data, part1);
-	memcpy(ctx->buffer, data + part1, end);
+	fast_memcpy(ctx->buffer + ctx->pos, data, part1);
+	fast_memcpy(ctx->buffer, data + part1, end);
 	ctx->pos = end;
     } else {
-	memcpy(ctx->buffer + ctx->pos, data, size);
+	fast_memcpy(ctx->buffer + ctx->pos, data, size);
 	ctx->pos += size;
 	
 	if (ctx->pos == ctx->size) ctx->pos = 0;