/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "smx_context_private.h"
#include <lua5.1/lauxlib.h>
#include <lua5.1/lualib.h>
-/* lower this if you want to reduce the memory consumption */
-//#define STACK_SIZE 128*1024
+/* lua can run with ultra tiny stacks since the user code lives in lua stacks, not the main one */
+//#define CONTEXT_STACK_SIZE 4*1024
+#include "smx_context_sysv_private.h"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(lua);
-typedef struct s_smx_ctx_lua {
- s_smx_ctx_sysv_t super; /* Fields of super implementation */
-
- /* lua state info */
- lua_State *state;
- int ref; /* to prevent the lua GC from collecting my threads, I ref them explicitely */
- int nargs; /* argument to lua_resume. First time: argc-1, afterward: 0 */
-} s_smx_ctx_lua_t, *smx_ctx_lua_t;
-
-static lua_State *lua_state;
+lua_State *simgrid_lua_state;
static smx_context_t
smx_ctx_lua_create_context(xbt_main_func_t code, int argc, char** argv,
static void smx_ctx_lua_suspend(smx_context_t context);
static void smx_ctx_lua_resume(smx_context_t new_context);
-static void smx_ctx_sysv_wrapper(void);
-/* Actually, the parameter is a lua_State*, but it got anonymized because that function
- * is defined in a global header where lua may not be defined */
-void SIMIX_ctx_lua_factory_set_state(void* state) {
- lua_state = state;
-}
void SIMIX_ctx_lua_factory_init(smx_context_factory_t *factory) {
smx_ctx_base_factory_init(factory);
(*factory)->create_context = smx_ctx_lua_create_context;
- (*factory)->finalize = smx_ctx_lua_factory_finalize;
- (*factory)->free = smx_ctx_lua_free;
- (*factory)->stop = smx_ctx_lua_stop;
- (*factory)->suspend = smx_ctx_lua_suspend;
- (*factory)->resume = smx_ctx_lua_resume;
+ /* don't override (*factory)->finalize */;
+ (*factory)->free = smx_ctx_sysv_free;
+ (*factory)->stop = smx_ctx_sysv_stop;
+ (*factory)->suspend = smx_ctx_sysv_suspend;
+ (*factory)->resume = smx_ctx_sysv_resume;
(*factory)->name = "smx_lua_context_factory";
INFO0("Lua Factory created");
}
-static int smx_ctx_lua_factory_finalize(smx_context_factory_t * factory) {
- lua_close(lua_state);
-
- return smx_ctx_base_factory_finalize(factory);
-}
-
static smx_context_t
smx_ctx_lua_create_context(xbt_main_func_t code, int argc, char** argv,
void_f_pvoid_t cleanup_func, void* cleanup_arg) {
- smx_ctx_lua_t context = (smx_ctx_lua_t)smx_ctx_sysv_create_context_sized
- (sizeof(s_smx_ctx_lua_t), code,argc,argv,cleanup_func,cleanup_arg);
-
-
- /* If the user provided a function for the process then use it
- otherwise is the context for maestro */
- if (code){
- INFO1("Created context for function %s",argv[0]);
-
- /* start the coroutine in charge of running that code */
- context->state = lua_newthread(lua_state);
- context->ref = luaL_ref(lua_state, LUA_REGISTRYINDEX); // protect the thread from being garbage collected
-
- /* Start the co-routine */
- lua_getglobal(context->state,context->super.super.argv[0]);
- xbt_assert1(lua_isfunction(context->state,-1),
- "The lua function %s does not seem to exist",context->super.super.argv[0]);
-
- // push arguments onto the stack
- int i;
- for(i=1;i<context->super.super.argc;i++)
- lua_pushstring(context->state,context->super.super.argv[i]);
-
- // Call the function (in resume)
- context->nargs = context->super.super.argc-1;
-
- } else {
- INFO0("Created context for maestro");
- }
-
- return (smx_context_t)context;
+ return smx_ctx_sysv_create_context_sized(sizeof(s_smx_ctx_sysv_t),
+ code,argc,argv,cleanup_func,cleanup_arg);
}
-
+#if KILLME
static void smx_ctx_lua_free(smx_context_t context) {
if (context){
DEBUG1("smx_ctx_lua_free_context(%p)",context);
- /* let the lua garbage collector reclaim the thread used for the coroutine */
- luaL_unref(lua_state,LUA_REGISTRYINDEX,((smx_ctx_lua_t)context)->ref );
}
- smx_ctx_base_free(context);
+ smx_ctx_sysv_free(context);
}
static void smx_ctx_lua_stop(smx_context_t pcontext) {
- smx_ctx_lua_t context = (smx_ctx_lua_t)pcontext;
-
- INFO1("Stopping '%s' (nothing to do)",context->super.super.argv[0]);
- if (context->super.super.cleanup_func)
- (*context->super.super.cleanup_func) (context->super.super.cleanup_arg);
-
-// smx_ctx_lua_suspend(pcontext);
+ DEBUG1("Stopping '%s' (nothing to do)",pcontext->argv[0]);
+ smx_ctx_sysv_stop(pcontext);
}
static void smx_ctx_lua_suspend(smx_context_t pcontext) {
smx_ctx_lua_t context = (smx_ctx_lua_t)pcontext;
- DEBUG1("Suspending '%s' (calling lua_yield)",context->super.super.argv[0]);
- //lua_yield(context->state,0);
-
- lua_getglobal(context->state,"doyield");
- xbt_assert0(lua_isfunction(context->state,-1),
- "Cannot find the coroutine.yield function...");
- INFO0("Call coroutine.yield");
- lua_call(context->state,0,0);
- INFO0("Back from call to coroutine.yield");
+ DEBUG1("Suspending '%s' (using sysv facilities)",context->super.super.argv[0]);
+ smx_ctx_sysv_suspend(pcontext);
+
+ DEBUG0("Back from call yielding");
}
static void
smx_ctx_lua_resume(smx_context_t new_context) {
smx_ctx_lua_t context = (smx_ctx_lua_t)new_context;
DEBUG1("Resuming %s",context->super.super.argv[0]);
- int ret = lua_resume(context->state,context->nargs);
- INFO3("Function %s yielded back with value %d %s",context->super.super.argv[0],ret,(ret==LUA_YIELD?"(ie, LUA_YIELD)":""));
- if (lua_isstring(context->state,-1))
- INFO2("Result of %s seem to be '%s'",context->super.super.argv[0],luaL_checkstring(context->state,-1));
- context->nargs=0;
+ smx_ctx_sysv_resume(new_context);
}
+#endif
