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-rw-r--r--src/xz/coder.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/xz/coder.c b/src/xz/coder.c
index 027d7d2f..9accecad 100644
--- a/src/xz/coder.c
+++ b/src/xz/coder.c
@@ -195,6 +195,17 @@ coder_set_compression_settings(void)
// Print the selected filter chain.
message_filters_show(V_DEBUG, filters);
+ // Disable encoder threads when --flush-timeout is used because
+ // the threaded encoder doesn't support LZMA_SYNC_FLUSH.
+ // FIXME: When LZMA_SYNC_FLUSH is supported, this should be changed.
+ if (opt_mode == MODE_COMPRESS && opt_flush_timeout != 0
+ && hardware_threads_get() > 1) {
+ message(V_WARNING, _("Switching to single-threaded mode "
+ "due to --flush-timeout=%" PRIu64),
+ opt_flush_timeout);
+ hardware_threads_set(1);
+ }
+
// Get the memory usage. Note that if --format=raw was used,
// we can be decompressing.
const uint64_t memory_limit = hardware_memlimit_get(opt_mode);