aboutsummaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
authorDaniel Stenberg <daniel@haxx.se>2020-05-28 18:30:47 +0200
committerDaniel Stenberg <daniel@haxx.se>2020-05-30 23:14:33 +0200
commitc4e6968127e876b01e5e0b4b7cdbc49d5267530c (patch)
tree7d74ba1d30f99ac91b050fbb6c5b44338c56e88f /lib
parent842f73de58f38bd6e285e08bbd1adb6c17cb62cd (diff)
url: alloc the download buffer at transfer start
... and free it as soon as the transfer is done. It removes the extra alloc when a new size is set with setopt() and reduces memory for unused easy handles. In addition: the closure_handle now doesn't use an allocated buffer at all but the smallest supported size as a stack based one. Closes #5472
Diffstat (limited to 'lib')
-rw-r--r--lib/conncache.c6
-rw-r--r--lib/easy.c17
-rw-r--r--lib/http2.c9
-rw-r--r--lib/multi.c22
-rw-r--r--lib/setopt.c2
-rw-r--r--lib/transfer.c14
-rw-r--r--lib/url.c32
-rw-r--r--lib/urldata.h1
8 files changed, 50 insertions, 53 deletions
diff --git a/lib/conncache.c b/lib/conncache.c
index 95fcea6f3..4474c28b4 100644
--- a/lib/conncache.c
+++ b/lib/conncache.c
@@ -531,6 +531,11 @@ Curl_conncache_extract_oldest(struct Curl_easy *data)
void Curl_conncache_close_all_connections(struct conncache *connc)
{
struct connectdata *conn;
+ char buffer[READBUFFER_MIN];
+ if(!connc->closure_handle)
+ return;
+ connc->closure_handle->state.buffer = buffer;
+ connc->closure_handle->set.buffer_size = READBUFFER_MIN;
conn = conncache_find_first_connection(connc);
while(conn) {
@@ -547,6 +552,7 @@ void Curl_conncache_close_all_connections(struct conncache *connc)
conn = conncache_find_first_connection(connc);
}
+ connc->closure_handle->state.buffer = NULL;
if(connc->closure_handle) {
SIGPIPE_VARIABLE(pipe_st);
sigpipe_ignore(connc->closure_handle, &pipe_st);
diff --git a/lib/easy.c b/lib/easy.c
index 1deedb265..f58c4521a 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -829,9 +829,6 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
* the likeliness of us forgetting to init a buffer here in the future.
*/
outcurl->set.buffer_size = data->set.buffer_size;
- outcurl->state.buffer = malloc(outcurl->set.buffer_size + 1);
- if(!outcurl->state.buffer)
- goto fail;
/* copy all userdefined values */
if(dupset(outcurl, data))
@@ -947,8 +944,6 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
*/
void curl_easy_reset(struct Curl_easy *data)
{
- long old_buffer_size = data->set.buffer_size;
-
Curl_free_request_state(data);
/* zero out UserDefined data: */
@@ -972,18 +967,6 @@ void curl_easy_reset(struct Curl_easy *data)
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_CRYPTO_AUTH)
Curl_http_auth_cleanup_digest(data);
#endif
-
- /* resize receive buffer */
- if(old_buffer_size != data->set.buffer_size) {
- char *newbuff = realloc(data->state.buffer, data->set.buffer_size + 1);
- if(!newbuff) {
- DEBUGF(fprintf(stderr, "Error: realloc of buffer failed\n"));
- /* nothing we can do here except use the old size */
- data->set.buffer_size = old_buffer_size;
- }
- else
- data->state.buffer = newbuff;
- }
}
/*
diff --git a/lib/http2.c b/lib/http2.c
index e4733c94b..7d56e2280 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -258,15 +258,14 @@ static unsigned int http2_conncheck(struct connectdata *check,
void Curl_http2_setup_req(struct Curl_easy *data)
{
struct HTTP *http = data->req.protop;
-
http->bodystarted = FALSE;
http->status_code = -1;
http->pausedata = NULL;
http->pauselen = 0;
http->closed = FALSE;
http->close_handled = FALSE;
- http->mem = data->state.buffer;
- http->len = data->set.buffer_size;
+ http->mem = NULL;
+ http->len = 0;
http->memlen = 0;
}
@@ -2103,6 +2102,8 @@ CURLcode Curl_http2_setup(struct connectdata *conn)
struct http_conn *httpc = &conn->proto.httpc;
struct HTTP *stream = conn->data->req.protop;
+ DEBUGASSERT(conn->data->state.buffer);
+
stream->stream_id = -1;
Curl_dyn_init(&stream->header_recvbuf, DYN_H2_HEADERS);
@@ -2126,6 +2127,8 @@ CURLcode Curl_http2_setup(struct connectdata *conn)
stream->upload_left = 0;
stream->upload_mem = NULL;
stream->upload_len = 0;
+ stream->mem = conn->data->state.buffer;
+ stream->len = conn->data->set.buffer_size;
httpc->inbuflen = 0;
httpc->nread_inbuf = 0;
diff --git a/lib/multi.c b/lib/multi.c
index 75b0357c3..b753b1a61 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -678,6 +678,7 @@ static CURLcode multi_done(struct Curl_easy *data,
data->state.lastconnect = NULL;
}
+ Curl_safefree(data->state.buffer);
Curl_free_request_state(data);
return result;
}
@@ -1522,6 +1523,20 @@ static CURLcode protocol_connect(struct connectdata *conn,
return result; /* pass back status */
}
+/*
+ * preconnect() is called immediately before a connect starts. When a redirect
+ * is followed, this is then called multiple times during a single transfer.
+ */
+static CURLcode preconnect(struct Curl_easy *data)
+{
+ if(!data->state.buffer) {
+ data->state.buffer = malloc(data->set.buffer_size + 1);
+ if(!data->state.buffer)
+ return CURLE_OUT_OF_MEMORY;
+ }
+ return CURLE_OK;
+}
+
static CURLMcode multi_runsingle(struct Curl_multi *multi,
struct curltime now,
@@ -1629,6 +1644,11 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
case CURLM_STATE_CONNECT:
/* Connect. We want to get a connection identifier filled in. */
+ /* init this transfer. */
+ result = preconnect(data);
+ if(result)
+ break;
+
Curl_pgrsTime(data, TIMER_STARTSINGLE);
if(data->set.timeout)
Curl_expire(data, data->set.timeout, EXPIRE_TIMEOUT);
@@ -2058,7 +2078,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
char *newurl = NULL;
bool retry = FALSE;
bool comeback = FALSE;
-
+ DEBUGASSERT(data->state.buffer);
/* check if over send speed */
send_timeout_ms = 0;
if(data->set.max_send_speed > 0)
diff --git a/lib/setopt.c b/lib/setopt.c
index 72704127c..2ddaeef7d 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -2076,7 +2076,7 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
arg = READBUFFER_MIN;
/* Resize if new size */
- if(arg != data->set.buffer_size) {
+ if((arg != data->set.buffer_size) && data->state.buffer) {
char *newbuff = realloc(data->state.buffer, arg + 1);
if(!newbuff) {
DEBUGF(fprintf(stderr, "Error: realloc of buffer failed\n"));
diff --git a/lib/transfer.c b/lib/transfer.c
index dc43cf6ce..ea337ea1d 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -558,6 +558,8 @@ static CURLcode readwrite_data(struct Curl_easy *data,
size_t excess = 0; /* excess bytes read */
bool readmore = FALSE; /* used by RTP to signal for more data */
int maxloops = 100;
+ char *buf = data->state.buffer;
+ DEBUGASSERT(buf);
*done = FALSE;
*comeback = FALSE;
@@ -592,7 +594,7 @@ static CURLcode readwrite_data(struct Curl_easy *data,
if(bytestoread) {
/* receive data from the network! */
- result = Curl_read(conn, conn->sockfd, k->buf, bytestoread, &nread);
+ result = Curl_read(conn, conn->sockfd, buf, bytestoread, &nread);
/* read would've blocked */
if(CURLE_AGAIN == result)
@@ -619,9 +621,8 @@ static CURLcode readwrite_data(struct Curl_easy *data,
/* indicates data of zero size, i.e. empty file */
is_empty_data = ((nread == 0) && (k->bodywrites == 0)) ? TRUE : FALSE;
- /* NUL terminate, allowing string ops to be used */
if(0 < nread || is_empty_data) {
- k->buf[nread] = 0;
+ buf[nread] = 0;
}
else {
/* if we receive 0 or less here, either the http2 stream is closed or the
@@ -638,7 +639,7 @@ static CURLcode readwrite_data(struct Curl_easy *data,
/* Default buffer to use when we write the buffer, it may be changed
in the flow below before the actual storing is done. */
- k->str = k->buf;
+ k->str = buf;
if(conn->handler->readwrite) {
result = conn->handler->readwrite(data, conn, &nread, &readmore);
@@ -905,10 +906,10 @@ static CURLcode readwrite_data(struct Curl_easy *data,
/* Parse the excess data */
k->str += nread;
- if(&k->str[excess] > &k->buf[data->set.buffer_size]) {
+ if(&k->str[excess] > &buf[data->set.buffer_size]) {
/* the excess amount was too excessive(!), make sure
it doesn't read out of buffer */
- excess = &k->buf[data->set.buffer_size] - k->str;
+ excess = &buf[data->set.buffer_size] - k->str;
}
nread = (ssize_t)excess;
@@ -1467,7 +1468,6 @@ CURLcode Curl_pretransfer(struct Curl_easy *data)
data->state.authhost.want = data->set.httpauth;
data->state.authproxy.want = data->set.proxyauth;
Curl_safefree(data->info.wouldredirect);
- data->info.wouldredirect = NULL;
if(data->set.httpreq == HTTPREQ_PUT)
data->state.infilesize = data->set.filesize;
diff --git a/lib/url.c b/lib/url.c
index 5114deaea..578844bae 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -610,31 +610,21 @@ CURLcode Curl_open(struct Curl_easy **curl)
return result;
}
- /* We do some initial setup here, all those fields that can't be just 0 */
-
- data->state.buffer = malloc(READBUFFER_SIZE + 1);
- if(!data->state.buffer) {
- DEBUGF(fprintf(stderr, "Error: malloc of buffer failed\n"));
- result = CURLE_OUT_OF_MEMORY;
- }
- else {
- result = Curl_init_userdefined(data);
- if(!result) {
- Curl_dyn_init(&data->state.headerb, CURL_MAX_HTTP_HEADER);
- Curl_convert_init(data);
- Curl_initinfo(data);
+ result = Curl_init_userdefined(data);
+ if(!result) {
+ Curl_dyn_init(&data->state.headerb, CURL_MAX_HTTP_HEADER);
+ Curl_convert_init(data);
+ Curl_initinfo(data);
- /* most recent connection is not yet defined */
- data->state.lastconnect = NULL;
+ /* most recent connection is not yet defined */
+ data->state.lastconnect = NULL;
- data->progress.flags |= PGRS_HIDE;
- data->state.current_speed = -1; /* init to negative == impossible */
- }
+ data->progress.flags |= PGRS_HIDE;
+ data->state.current_speed = -1; /* init to negative == impossible */
}
if(result) {
Curl_resolver_cleanup(data->state.resolver);
- free(data->state.buffer);
Curl_dyn_free(&data->state.headerb);
Curl_freeset(data);
free(data);
@@ -3973,14 +3963,10 @@ CURLcode Curl_init_do(struct Curl_easy *data, struct connectdata *conn)
k->start = Curl_now(); /* start time */
k->now = k->start; /* current time is now */
k->header = TRUE; /* assume header */
-
k->bytecount = 0;
-
- k->buf = data->state.buffer;
k->ignorebody = FALSE;
Curl_speedinit(data);
-
Curl_pgrsSetUploadCounter(data, 0);
Curl_pgrsSetDownloadCounter(data, 0);
diff --git a/lib/urldata.h b/lib/urldata.h
index 20ce5ed10..0d756f18e 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -627,7 +627,6 @@ struct SingleRequest {
struct contenc_writer *writer_stack;
time_t timeofdoc;
long bodywrites;
- char *buf;
int keepon;
char *location; /* This points to an allocated version of the Location:
header data */