Commit 8642feba7429ac2941a879a0870a84a83a3664cd
2017-12-10T17:23:44
zstream: use UINT_MAX sized chunks Instead of paging to zlib in INT_MAX sized chunks, we can give it as many as UINT_MAX bytes at a time. zlib doesn't care how big a buffer we give it, this simply results in fewer calls into zlib.
diff --git a/src/zstream.c b/src/zstream.c
index 1c9d506..963c9a3 100644
--- a/src/zstream.c
+++ b/src/zstream.c
@@ -103,8 +103,9 @@ int git_zstream_get_output(void *out, size_t *out_len, git_zstream *zstream)
/* set up in data */
zstream->z.next_in = (Bytef *)zstream->in;
zstream->z.avail_in = (uInt)zstream->in_len;
+
if ((size_t)zstream->z.avail_in != zstream->in_len) {
- zstream->z.avail_in = INT_MAX;
+ zstream->z.avail_in = UINT_MAX;
zflush = Z_NO_FLUSH;
} else {
zflush = Z_FINISH;
@@ -115,7 +116,7 @@ int git_zstream_get_output(void *out, size_t *out_len, git_zstream *zstream)
zstream->z.next_out = out;
zstream->z.avail_out = (uInt)out_remain;
if ((size_t)zstream->z.avail_out != out_remain)
- zstream->z.avail_out = INT_MAX;
+ zstream->z.avail_out = UINT_MAX;
out_queued = (size_t)zstream->z.avail_out;
/* compress next chunk */