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liblzma: Support LZMA_FULL_FLUSH and _BARRIER in threaded encoder.

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Now --block-list=SIZES works with in the threaded mode too,
although the performance is still bad due to the use of
LZMA_FULL_FLUSH instead of the new LZMA_FULL_BARRIER.
This commit is contained in:
Lasse Collin 2013-10-02 20:05:23 +03:00
parent 97bb38712f
commit 0cd45fc2bc
1 changed files with 39 additions and 16 deletions
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55
src/liblzma/common/stream_encoder_mt.c
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@ -726,13 +726,6 @@ stream_encode_mt(lzma_coder *coder, const lzma_allocator *allocator,
return ret;
}
// Check if the last Block was finished.
if (action == LZMA_FINISH
&& *in_pos == in_size
&& lzma_outq_is_empty(
&coder->outq))
break;
// Try to give uncompressed data to a worker thread.
ret = stream_encode_in(coder, allocator,
in, in_pos, in_size, action);
@ -741,14 +734,44 @@ stream_encode_mt(lzma_coder *coder, const lzma_allocator *allocator,
return ret;
}
// Return if
// - we have used all the input and expect to
// get more input; or
// - the output buffer has been filled.
// See if we should wait or return.
//
// TODO: Support flushing.
if ((*in_pos == in_size && action != LZMA_FINISH)
|| *out_pos == out_size)
// TODO: LZMA_SYNC_FLUSH and LZMA_SYNC_BARRIER.
if (*in_pos == in_size) {
// LZMA_RUN: More data is probably coming
// so return to let the caller fill the
// input buffer.
if (action == LZMA_RUN)
return LZMA_OK;
// LZMA_FULL_BARRIER: The same as with
// LZMA_RUN but tell the caller that the
// barrier was completed.
if (action == LZMA_FULL_BARRIER)
return LZMA_STREAM_END;
// Finishing or flushing isn't completed until
// all input data has been encoded and copied
// to the output buffer.
if (lzma_outq_is_empty(&coder->outq)) {
// LZMA_FINISH: Continue to encode
// the Index field.
if (action == LZMA_FINISH)
break;
// LZMA_FULL_FLUSH: Return to tell
// the caller that flushing was
// completed.
if (action == LZMA_FULL_FLUSH)
return LZMA_STREAM_END;
}
}
// Return if there is no output space left.
// This check must be done after testing the input
// buffer, because we might want to use a different
// return code.
if (*out_pos == out_size)
return LZMA_OK;
// Neither in nor out has been used completely.
@ -1045,8 +1068,8 @@ lzma_stream_encoder_mt(lzma_stream *strm, const lzma_mt *options)
strm->internal->supported_actions[LZMA_RUN] = true;
// strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
// strm->internal->supported_actions[LZMA_FULL_FLUSH] = true;
// strm->internal->supported_actions[LZMA_FULL_BARRIER] = true;
strm->internal->supported_actions[LZMA_FULL_FLUSH] = true;
strm->internal->supported_actions[LZMA_FULL_BARRIER] = true;
strm->internal->supported_actions[LZMA_FINISH] = true;
return LZMA_OK;