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/*
* include/haproxy/hlua.h
* Lua core management functions
*
* Copyright (C) 2015-2016 Thierry Fournier <tfournier@arpalert.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _HAPROXY_HLUA_H
#define _HAPROXY_HLUA_H
#include <haproxy/hlua-t.h>
#ifdef USE_LUA
/* The following macros are used to set flags. */
#define HLUA_SET_RUN(__hlua) do {(__hlua)->flags |= HLUA_RUN;} while(0)
#define HLUA_CLR_RUN(__hlua) do {(__hlua)->flags &= ~HLUA_RUN;} while(0)
#define HLUA_IS_RUNNING(__hlua) ((__hlua)->flags & HLUA_RUN)
#define HLUA_SET_CTRLYIELD(__hlua) do {(__hlua)->flags |= HLUA_CTRLYIELD;} while(0)
#define HLUA_CLR_CTRLYIELD(__hlua) do {(__hlua)->flags &= ~HLUA_CTRLYIELD;} while(0)
#define HLUA_IS_CTRLYIELDING(__hlua) ((__hlua)->flags & HLUA_CTRLYIELD)
#define HLUA_SET_WAKERESWR(__hlua) do {(__hlua)->flags |= HLUA_WAKERESWR;} while(0)
#define HLUA_CLR_WAKERESWR(__hlua) do {(__hlua)->flags &= ~HLUA_WAKERESWR;} while(0)
#define HLUA_IS_WAKERESWR(__hlua) ((__hlua)->flags & HLUA_WAKERESWR)
#define HLUA_SET_WAKEREQWR(__hlua) do {(__hlua)->flags |= HLUA_WAKEREQWR;} while(0)
#define HLUA_CLR_WAKEREQWR(__hlua) do {(__hlua)->flags &= ~HLUA_WAKEREQWR;} while(0)
#define HLUA_IS_WAKEREQWR(__hlua) ((__hlua)->flags & HLUA_WAKEREQWR)
#define HLUA_CLR_NOYIELD(__hlua) do {(__hlua)->flags &= ~HLUA_NOYIELD;} while(0)
#define HLUA_SET_NOYIELD(__hlua) do {(__hlua)->flags |= HLUA_NOYIELD;} while(0)
#define HLUA_CANT_YIELD(__hlua) ((__hlua)->flags & HLUA_NOYIELD)
#define HLUA_INIT(__hlua) do { (__hlua)->T = 0; } while(0)
/* Lua HAProxy integration functions. */
const char *hlua_traceback(lua_State *L, const char* sep);
void hlua_ctx_destroy(struct hlua *lua);
void hlua_init();
int hlua_post_init();
void hlua_applet_tcp_fct(struct appctx *ctx);
void hlua_applet_http_fct(struct appctx *ctx);
int hlua_event_sub(lua_State *L, event_hdl_sub_list *sub_list);
struct task *hlua_process_task(struct task *task, void *context, unsigned int state);
const char *hlua_show_current_location(const char *pfx);
int hlua_ref(lua_State *L);
void hlua_pushref(lua_State *L, int ref);
void hlua_unref(lua_State *L, int ref);
struct hlua *hlua_gethlua(lua_State *L);
void hlua_yieldk(lua_State *L, int nresults, lua_KContext ctx, lua_KFunction k, int timeout, unsigned int flags);
#else /* USE_LUA */
/************************ For use when Lua is disabled ********************/
#define HLUA_IS_RUNNING(__hlua) 0
#define HLUA_INIT(__hlua)
/* Empty function for compilation without Lua. */
static inline void hlua_init() { }
static inline int hlua_post_init() { return 1; }
static inline void hlua_ctx_destroy(struct hlua *lua) { }
static inline const char *hlua_show_current_location(const char *pfx) { return NULL; }
#endif /* USE_LUA */
#endif /* _HAPROXY_HLUA_H */
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