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streaming writes

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This commit is contained in:
Dave Vasilevsky 2010-10-10 20:37:14 -04:00
parent 73e14a5272
commit 16f0d6e2ed
1 changed files with 21 additions and 4 deletions
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25
write.c
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@ -294,6 +294,7 @@ static void block_queue_free(int type, void *p) {
static void *encode_thread(void *arg) {
int __attribute__((unused)) thnum = (uintptr_t)arg;
lzma_stream stream = LZMA_STREAM_INIT;
while (true) {
io_block_t *ib;
@ -302,16 +303,32 @@ static void *encode_thread(void *arg) {
break;
debug("encoder %d: received %zu", thnum, ib->seq);
block_init(&ib->block);
ib->outsize = 0;
if (lzma_block_buffer_encode(&ib->block, NULL, ib->input, ib->insize,
ib->output, &ib->outsize, gBlockOutSize) != LZMA_OK)
die("Error encoding block");
if (lzma_block_header_encode(&ib->block, ib->output) != LZMA_OK)
die("Error encoding block header");
ib->outsize = ib->block.header_size;
if (lzma_block_encoder(&stream, &ib->block) != LZMA_OK)
die("Error creating block encoder");
stream.next_in = ib->input;
stream.avail_in = ib->insize;
stream.next_out = ib->output + ib->outsize;
stream.avail_out = gBlockOutSize - ib->outsize;
lzma_ret err = LZMA_OK;
while (err != LZMA_STREAM_END) {
err = lzma_code(&stream, LZMA_FINISH);
if (err != LZMA_OK && err != LZMA_STREAM_END)
die("Error encoding block");
}
ib->outsize = stream.next_out - ib->output;
debug("encoder %d: sending %zu", thnum, ib->seq);
queue_push(gWriteQ, MSG_BLOCK, ib);
}
lzma_end(&stream);
return NULL;
}