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authorStefan Metzmacher <metze@samba.org>2011-06-07 18:45:54 +0200
committerStefan Metzmacher <metze@samba.org>2011-06-08 17:46:22 +0200
commitad1cf187fdbcd726c6c74085308784fe4ecca883 (patch)
treec38bcc8b1cc74505e7970947b49bdcb3ee718560 /source3/libsmb
parent0a3fadc707ba2826915c01dbd8745675594ef603 (diff)
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s3:libsmb:cli_np_tstream: use dynamic talloc buffers
Having 8192 bytes on an idle connection is a bit to much, so we better use dynamic buffers using talloc, which also avoids a memcpy in the common SMBtrans readv codepath. metze
Diffstat (limited to 'source3/libsmb')
-rw-r--r--source3/libsmb/cli_np_tstream.c39
1 files changed, 30 insertions, 9 deletions
diff --git a/source3/libsmb/cli_np_tstream.c b/source3/libsmb/cli_np_tstream.c
index 5e11a92d06..132238582b 100644
--- a/source3/libsmb/cli_np_tstream.c
+++ b/source3/libsmb/cli_np_tstream.c
@@ -63,7 +63,7 @@ struct tstream_cli_np {
struct {
off_t ofs;
size_t left;
- uint8_t buf[TSTREAM_CLI_NP_BUF_SIZE];
+ uint8_t *buf;
} read, write;
};
@@ -363,9 +363,26 @@ static void tstream_cli_np_writev_write_next(struct tevent_req *req)
tstream_context_data(state->stream,
struct tstream_cli_np);
struct tevent_req *subreq;
+ size_t i;
+ size_t left = 0;
+
+ for (i=0; i < state->count; i++) {
+ left += state->vector[i].iov_len;
+ }
+
+ if (left == 0) {
+ TALLOC_FREE(cli_nps->write.buf);
+ tevent_req_done(req);
+ return;
+ }
cli_nps->write.ofs = 0;
- cli_nps->write.left = TSTREAM_CLI_NP_BUF_SIZE;
+ cli_nps->write.left = MIN(left, TSTREAM_CLI_NP_BUF_SIZE);
+ cli_nps->write.buf = talloc_realloc(cli_nps, cli_nps->write.buf,
+ uint8_t, cli_nps->write.left);
+ if (tevent_req_nomem(cli_nps->write.buf, req)) {
+ return;
+ }
/*
* copy the pending buffer first
@@ -391,11 +408,6 @@ static void tstream_cli_np_writev_write_next(struct tevent_req *req)
state->ret += len;
}
- if (cli_nps->write.ofs == 0) {
- tevent_req_done(req);
- return;
- }
-
if (cli_nps->trans.active && state->count == 0) {
cli_nps->trans.active = false;
cli_nps->trans.write_req = req;
@@ -634,6 +646,10 @@ static void tstream_cli_np_readv_read_next(struct tevent_req *req)
state->ret += len;
}
+ if (cli_nps->read.left == 0) {
+ TALLOC_FREE(cli_nps->read.buf);
+ }
+
if (state->count == 0) {
tevent_req_done(req);
return;
@@ -740,8 +756,7 @@ static void tstream_cli_np_readv_trans_done(struct tevent_req *subreq)
cli_nps->read.ofs = 0;
cli_nps->read.left = received;
- memcpy(cli_nps->read.buf, rcvbuf, received);
- TALLOC_FREE(rcvbuf);
+ cli_nps->read.buf = talloc_move(cli_nps, &rcvbuf);
if (cli_nps->trans.write_req == NULL) {
tstream_cli_np_readv_read_next(req);
@@ -817,6 +832,12 @@ static void tstream_cli_np_readv_read_done(struct tevent_req *subreq)
cli_nps->read.ofs = 0;
cli_nps->read.left = received;
+ cli_nps->read.buf = talloc_array(cli_nps, uint8_t, received);
+ if (cli_nps->read.buf == NULL) {
+ TALLOC_FREE(subreq);
+ tevent_req_nomem(cli_nps->read.buf, req);
+ return;
+ }
memcpy(cli_nps->read.buf, rcvbuf, received);
TALLOC_FREE(subreq);