diff options
Diffstat (limited to '')
| -rw-r--r-- | src/liblzma/common/stream_encoder_mt.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/liblzma/common/stream_encoder_mt.c b/src/liblzma/common/stream_encoder_mt.c index 6b897ab9..91cda998 100644 --- a/src/liblzma/common/stream_encoder_mt.c +++ b/src/liblzma/common/stream_encoder_mt.c @@ -640,9 +640,13 @@ wait_for_work(lzma_stream_coder *coder, mythread_condtime *wait_abs, // to true here and calculate the absolute time when // we must return if there's nothing to do. // - // The idea of *has_blocked is to avoid unneeded calls - // to mythread_condtime_set(), which may do a syscall - // depending on the operating system. + // This way if we block multiple times for short moments + // less than "timeout" milliseconds, we will return once + // "timeout" amount of time has passed since the *first* + // blocking occurred. If the absolute time was calculated + // again every time we block, "timeout" would effectively + // be meaningless if we never consecutively block longer + // than "timeout" ms. *has_blocked = true; mythread_condtime_set(wait_abs, &coder->cond, coder->timeout); } |