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[core] perf: copy small strings; better buf reuse 

copy small strings to write queue for better buffer reuse
(instead of swapping with larger buffers in write chunkqueue)
This commit is contained in:
Glenn Strauss 2018-10-26 22:17:12 -04:00
parent 23c72fc606
commit e7c840502a
5 changed files with 16 additions and 33 deletions
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6
src/connections.c
View File

@ -310,12 +310,11 @@ static int connection_handle_write_prepare(server *srv, connection *con) {
}
if (!con->file_finished) {
buffer *b;
buffer *b = srv->tmp_buf;
buffer_reset(con->physical.path);
con->file_finished = 1;
b = buffer_init();
/* build default error-page */
buffer_copy_string_len(b, CONST_STR_LEN(
@ -339,8 +338,7 @@ static int connection_handle_write_prepare(server *srv, connection *con) {
"</html>\n"
));
(void)http_chunk_append_buffer(srv, con, b);
buffer_free(b);
(void)http_chunk_append_mem(srv, con, CONST_BUF_LEN(b));
http_header_response_set(con, HTTP_HEADER_CONTENT_TYPE, CONST_STR_LEN("Content-Type"), CONST_STR_LEN("text/html"));
}

12
src/http-header-glue.c
View File

@ -325,8 +325,7 @@ static int http_response_parse_range(server *srv, connection *con, buffer *path,
if (!error) {
if (multipart) {
/* write boundary-header */
buffer *b = buffer_init();
buffer *b = srv->tmp_buf;
buffer_copy_string_len(b, CONST_STR_LEN("\r\n--"));
buffer_append_string_len(b, boundary, sizeof(boundary)-1);
@ -347,8 +346,7 @@ static int http_response_parse_range(server *srv, connection *con, buffer *path,
buffer_append_string_len(b, CONST_STR_LEN("\r\n\r\n"));
con->response.content_length += buffer_string_length(b);
chunkqueue_append_buffer(con->write_queue, b);
buffer_free(b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
}
chunkqueue_append_file(con->write_queue, path, start, end - start + 1);
@ -361,15 +359,13 @@ static int http_response_parse_range(server *srv, connection *con, buffer *path,
if (multipart) {
/* add boundary end */
buffer *b = buffer_init();
buffer *b = srv->tmp_buf;
buffer_copy_string_len(b, "\r\n--", 4);
buffer_append_string_len(b, boundary, sizeof(boundary)-1);
buffer_append_string_len(b, "--\r\n", 4);
con->response.content_length += buffer_string_length(b);
chunkqueue_append_buffer(con->write_queue, b);
buffer_free(b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
/* set header-fields */

2
src/http_chunk.c
View File

@ -33,7 +33,7 @@ static void http_chunk_append_len(server *srv, connection *con, uintmax_t len) {
buffer_append_uint_hex(b, len);
buffer_append_string_len(b, CONST_STR_LEN("\r\n"));
chunkqueue_append_buffer(con->write_queue, b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
}
static int http_chunk_append_file_open_fstat(server *srv, connection *con, buffer *fn, struct stat *st) {

17
src/mod_ssi.c
View File

@ -371,7 +371,7 @@ static int process_ssi_stmt(server *srv, connection *con, handler_ctx *p, const
case SSI_ECHO_USER_NAME: {
struct passwd *pw;
b = buffer_init();
b = srv->tmp_buf;
#ifdef HAVE_PWD_H
if (NULL == (pw = getpwuid(st->st_uid))) {
buffer_copy_int(b, st->st_uid);
@ -381,8 +381,7 @@ static int process_ssi_stmt(server *srv, connection *con, handler_ctx *p, const
#else
buffer_copy_int(b, st->st_uid);
#endif
chunkqueue_append_buffer(con->write_queue, b);
buffer_free(b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
break;
}
case SSI_ECHO_LAST_MODIFIED: {
@ -580,7 +579,7 @@ static int process_ssi_stmt(server *srv, connection *con, handler_ctx *p, const
switch (ssicmd) {
case SSI_FSIZE:
b = buffer_init();
b = srv->tmp_buf;
if (p->sizefmt) {
int j = 0;
const char *abr[] = { " B", " kB", " MB", " GB", " TB", NULL };
@ -594,8 +593,7 @@ static int process_ssi_stmt(server *srv, connection *con, handler_ctx *p, const
} else {
buffer_copy_int(b, stb.st_size);
}
chunkqueue_append_buffer(con->write_queue, b);
buffer_free(b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
break;
case SSI_FLASTMOD:
if (0 == strftime(buf, sizeof(buf), p->timefmt->ptr, localtime(&t))) {
@ -719,7 +717,8 @@ static int process_ssi_stmt(server *srv, connection *con, handler_ctx *p, const
case SSI_PRINTENV:
if (p->if_is_false) break;
b = buffer_init();
b = srv->tmp_buf;
buffer_string_set_length(b, 0);
for (i = 0; i < p->ssi_vars->used; i++) {
data_string *ds = (data_string *)p->ssi_vars->data[p->ssi_vars->sorted[i]];
@ -736,9 +735,7 @@ static int process_ssi_stmt(server *srv, connection *con, handler_ctx *p, const
buffer_append_string_encoded(b, CONST_BUF_LEN(ds->value), ENCODING_MINIMAL_XML);
buffer_append_string_len(b, CONST_STR_LEN("\n"));
}
chunkqueue_append_buffer(con->write_queue, b);
buffer_free(b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
break;
case SSI_EXEC: {
const char *cmd = NULL;

12
src/mod_uploadprogress.c
View File

@ -356,9 +356,8 @@ URIHANDLER_FUNC(mod_uploadprogress_uri_handler) {
http_header_response_set(con, HTTP_HEADER_OTHER, CONST_STR_LEN("Expires"), CONST_STR_LEN("Thu, 19 Nov 1981 08:52:00 GMT"));
http_header_response_set(con, HTTP_HEADER_CACHE_CONTROL, CONST_STR_LEN("Cache-Control"), CONST_STR_LEN("no-store, no-cache, must-revalidate, post-check=0, pre-check=0"));
b = buffer_init();
/* prepare XML */
b = srv->tmp_buf;
buffer_copy_string_len(b, CONST_STR_LEN(
"<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>"
"<upload>"
@ -371,14 +370,7 @@ URIHANDLER_FUNC(mod_uploadprogress_uri_handler) {
buffer_append_string_len(b, CONST_STR_LEN(
"</received>"
"</upload>"));
#if 0
log_error_write(srv, __FILE__, __LINE__, "sb", "...", b);
#endif
chunkqueue_append_buffer(con->write_queue, b);
buffer_free(b);
chunkqueue_append_mem(con->write_queue, CONST_BUF_LEN(b));
return HANDLER_FINISHED;
default:
break;