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added lighty.stat() which uses the stat-cache to reduce the number of syscalls

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@1377 152afb58-edef-0310-8abb-c4023f1b3aa9
svn/tags/lighttpd-1.4.13
Jan Kneschke 16 years ago
parent
commit
bf0f7832c1
  1. 72
      src/mod_magnet.c

72
src/mod_magnet.c

@ -14,6 +14,7 @@
#include "response.h"
#include "stat_cache.h"
#include "status_counter.h"
#include "etag.h"
#ifdef HAVE_LUA_H
#include <lua.h>
@ -172,6 +173,71 @@ static int magnet_print(lua_State *L) {
return 0;
}
static int magnet_stat(lua_State *L) {
const char *s = luaL_checkstring(L, 1);
server *srv;
connection *con;
buffer sb, *b;
stat_cache_entry *sce = NULL;
lua_pushstring(L, "lighty.srv");
lua_gettable(L, LUA_REGISTRYINDEX);
srv = lua_touserdata(L, -1);
lua_pop(L, 1);
lua_pushstring(L, "lighty.con");
lua_gettable(L, LUA_REGISTRYINDEX);
con = lua_touserdata(L, -1);
lua_pop(L, 1);
sb.ptr = (char *)s;
sb.used = sb.size = strlen(s) + 1;
if (HANDLER_GO_ON != stat_cache_get_entry(srv, con, &sb, &sce)) {
lua_pushnil(L);
return 1;
}
lua_newtable(L);
lua_pushinteger(L, sce->st.st_mode);
lua_setfield(L, -2, "st_mode");
lua_pushinteger(L, sce->st.st_mtime);
lua_setfield(L, -2, "st_mtime");
lua_pushinteger(L, sce->st.st_ctime);
lua_setfield(L, -2, "st_ctime");
lua_pushinteger(L, sce->st.st_atime);
lua_setfield(L, -2, "st_atime");
lua_pushinteger(L, sce->st.st_uid);
lua_setfield(L, -2, "st_uid");
lua_pushinteger(L, sce->st.st_gid);
lua_setfield(L, -2, "st_gid");
lua_pushinteger(L, sce->st.st_size);
lua_setfield(L, -2, "st_size");
lua_pushinteger(L, sce->st.st_ino);
lua_setfield(L, -2, "st_ino");
/* we have to mutate the etag */
b = buffer_init();
etag_mutate(b, sce->etag);
lua_pushlstring(L, b->ptr, b->used - 1);
lua_setfield(L, -2, "etag");
buffer_free(b);
return 1;
}
static int magnet_atpanic(lua_State *L) {
const char *s = luaL_checkstring(L, 1);
server *srv;
@ -297,6 +363,7 @@ static buffer *magnet_env_get_buffer(server *srv, connection *con, const char *k
{ NULL, MAGNET_ENV_UNSET }
};
UNUSED(srv);
/**
* map all internal variables to lua
@ -388,6 +455,7 @@ static int magnet_env_set(lua_State *L) {
static int magnet_copy_response_header(server *srv, connection *con, plugin_data *p, lua_State *L) {
UNUSED(p);
/**
* get the environment of the function
*/
@ -436,6 +504,7 @@ static int magnet_copy_response_header(server *srv, connection *con, plugin_data
* return 200
*/
static int magnet_attach_content(server *srv, connection *con, plugin_data *p, lua_State *L) {
UNUSED(p);
/**
* get the environment of the function
*/
@ -623,6 +692,9 @@ static handler_t magnet_attract(server *srv, connection *con, plugin_data *p, bu
lua_pushinteger(L, MAGNET_RESTART_REQUEST);
lua_setfield(L, -2, "RESTART_REQUEST");
lua_pushcfunction(L, magnet_stat); /* (sp += 1) */
lua_setfield(L, -2, "stat"); /* -1 is the env we want to set (sp -= 1) */
lua_setfield(L, -2, "lighty"); /* lighty.* (sp -= 1) */
lua_newtable(L); /* the meta-table for the new env (sp += 1) */

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