1 /* context_lua - implementation of context switching with lua coroutines */
3 /* Copyright (c) 2010 the SimGrid team. All right reserved */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "smx_context_private.h"
13 /* We don't use that factory at all for now. This may change at some point,
14 * to reduce the amount of memory per user thread in sysv
17 lua_State *simgrid_lua_state;
18 void SIMIX_ctx_lua_factory_init(smx_context_factory_t *factory) {
22 /* lua can run with ultra tiny stacks since the user code lives in lua stacks, not the main one */
23 //#define CONTEXT_STACK_SIZE 4*1024
25 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(lua);
29 smx_ctx_lua_create_context(xbt_main_func_t code, int argc, char** argv,
30 void_f_pvoid_t cleanup_func, void* cleanup_arg);
32 static int smx_ctx_lua_factory_finalize(smx_context_factory_t *factory);
34 static void smx_ctx_lua_free(smx_context_t context);
35 static void smx_ctx_lua_stop(smx_context_t context);
36 static void smx_ctx_lua_suspend(smx_context_t context);
37 static void smx_ctx_lua_resume(smx_context_t new_context);
40 void SIMIX_ctx_lua_factory_init(smx_context_factory_t *factory) {
42 smx_ctx_base_factory_init(factory);
44 (*factory)->create_context = smx_ctx_lua_create_context;
45 /* don't override (*factory)->finalize */;
46 (*factory)->free = smx_ctx_sysv_free;
47 (*factory)->stop = smx_ctx_sysv_stop;
48 (*factory)->suspend = smx_ctx_sysv_suspend;
49 (*factory)->resume = smx_ctx_sysv_resume;
50 (*factory)->name = "smx_lua_context_factory";
52 INFO0("Lua Factory created");
56 smx_ctx_lua_create_context(xbt_main_func_t code, int argc, char** argv,
57 void_f_pvoid_t cleanup_func, void* cleanup_arg) {
59 return smx_ctx_sysv_create_context_sized(sizeof(s_smx_ctx_sysv_t),
60 code,argc,argv,cleanup_func,cleanup_arg);
63 static void smx_ctx_lua_free(smx_context_t context) {
66 DEBUG1("smx_ctx_lua_free_context(%p)",context);
70 smx_ctx_sysv_free(context);
73 static void smx_ctx_lua_stop(smx_context_t pcontext) {
74 DEBUG1("Stopping '%s' (nothing to do)",pcontext->argv[0]);
75 smx_ctx_sysv_stop(pcontext);
78 static void smx_ctx_lua_suspend(smx_context_t pcontext) {
79 smx_ctx_lua_t context = (smx_ctx_lua_t)pcontext;
80 DEBUG1("Suspending '%s' (using sysv facilities)",context->super.super.argv[0]);
81 smx_ctx_sysv_suspend(pcontext);
83 DEBUG0("Back from call yielding");
87 smx_ctx_lua_resume(smx_context_t new_context) {
88 smx_ctx_lua_t context = (smx_ctx_lua_t)new_context;
89 DEBUG1("Resuming %s",context->super.super.argv[0]);
90 smx_ctx_sysv_resume(new_context);