input: don't ftruncate under macosx - it's expensive there

1 files changed, 3 insertions, 4 deletions

diff --git a/input.c b/input.c
index 70182162..b3de4c37 100644
--- a/input.c
+++ b/input.c
@@ -56,13 +56,12 @@ void input_setSize(run_t* run, size_t sz) {
     if (sz > run->global->mutate.maxFileSz) {
         PLOG_F("Too large size requested: %zu > maxSize: %zu", sz, run->global->mutate.maxFileSz);
     }
-    /* ftruncate of a mmaped file fails under CygWin */
-#if !defined(__CYGWIN__)
-    /* ftruncate for each change of a dynamic file size might be expensive though */
+    /* ftruncate of a mmaped file fails under CygWin, it's also painfully slow under MacOS X */
+#if !defined(__CYGWIN__) && !defined(_HF_ARCH_DARWIN)
     if (TEMP_FAILURE_RETRY(ftruncate(run->dynamicFileFd, sz)) == -1) {
         PLOG_W("ftruncate(run->dynamicFileFd=%d, sz=%zu)", run->dynamicFileFd, sz);
     }
-#endif /* !defined(__CYGWIN__) */
+#endif /* !defined(__CYGWIN__) && !defined(_HF_ARCH_DARWIN) */
     run->dynamicFileSz = sz;
 }