3 /* context_java - implementation of context switching for java threads */
5 /* Copyright (c) 2007-2008 the SimGrid team. All right reserved */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include "xbt/function_types.h"
13 #include "smx_context_java.h"
15 XBT_LOG_NEW_DEFAULT_CATEGORY(jmsg, "MSG for Java(TM)");
18 smx_ctx_java_factory_create_context(xbt_main_func_t code, int argc, char** argv,
19 void_f_pvoid_t cleanup_func, void* cleanup_arg);
21 static int smx_ctx_java_factory_finalize(smx_context_factory_t * factory);
23 static void smx_ctx_java_free(smx_context_t context);
25 static void smx_ctx_java_start(smx_context_t context);
27 static void smx_ctx_java_stop(smx_context_t context);
29 static void smx_ctx_java_suspend(smx_context_t context);
32 smx_ctx_java_resume(smx_context_t old_context, smx_context_t new_context);
34 void SIMIX_ctx_java_factory_init(smx_context_factory_t * factory)
36 /* instantiate the context factory */
37 *factory = xbt_new0(s_smx_context_factory_t, 1);
39 (*factory)->create_context = smx_ctx_java_factory_create_context;
40 (*factory)->finalize = smx_ctx_java_factory_finalize;
41 (*factory)->free = smx_ctx_java_free;
42 (*factory)->start = smx_ctx_java_start;
43 (*factory)->stop = smx_ctx_java_stop;
44 (*factory)->suspend = smx_ctx_java_suspend;
45 (*factory)->resume = smx_ctx_java_resume;
47 (*factory)->name = "ctx_java_factory";
50 static int smx_ctx_java_factory_finalize(smx_context_factory_t * factory)
58 smx_ctx_java_factory_create_context(xbt_main_func_t code, int argc, char** argv,
59 void_f_pvoid_t cleanup_func, void* cleanup_arg)
61 smx_ctx_java_t context = xbt_new0(s_smx_ctx_java_t, 1);
63 /* If the user provided a function for the process then use it
64 otherwise is the context for maestro */
66 context->cleanup_func = cleanup_func;
67 context->cleanup_arg = cleanup_arg;
68 context->jprocess = (jobject) code;
69 context->jenv = get_current_thread_env();
72 return (smx_context_t) context;
75 static void smx_ctx_java_free(smx_context_t context)
78 smx_ctx_java_t ctx_java = (smx_ctx_java_t) context;
80 if (ctx_java->jprocess) {
81 jobject jprocess = ctx_java->jprocess;
83 ctx_java->jprocess = NULL;
85 /* if the java process is alive join it */
86 if (jprocess_is_alive(jprocess, get_current_thread_env()))
87 jprocess_join(jprocess, get_current_thread_env());
95 static void smx_ctx_java_start(smx_context_t context)
97 jprocess_start(((smx_ctx_java_t) context)->jprocess,
98 get_current_thread_env());
101 static void smx_ctx_java_stop(smx_context_t context)
103 jobject jprocess = NULL;
105 smx_ctx_java_t ctx_java;
107 if (context->cleanup_func)
108 (*(context->cleanup_func)) (context->cleanup_arg);
110 ctx_java = (smx_ctx_java_t) context;
112 /*FIXME: is this really necessary?*/
113 if (simix_global->current_process->iwannadie) {
114 /* The maestro call xbt_context_stop() with an exit code set to one */
115 if (ctx_java->jprocess) {
116 /* if the java process is alive schedule it */
117 if (jprocess_is_alive(ctx_java->jprocess, get_current_thread_env())) {
118 jprocess_schedule(simix_global->current_process->context);
119 jprocess = ctx_java->jprocess;
120 ctx_java->jprocess = NULL;
122 /* interrupt the java process */
123 jprocess_exit(jprocess, get_current_thread_env());
128 /* the java process exits */
129 jprocess = ctx_java->jprocess;
130 ctx_java->jprocess = NULL;
133 /* delete the global reference associated with the java process */
134 jprocess_delete_global_ref(jprocess, get_current_thread_env());
137 /*static void smx_ctx_java_swap(smx_context_t context)
140 smx_context_t self = current_context;
142 current_context = context;
144 jprocess_schedule(context);
146 current_context = self;
149 if (current_context->iwannadie)
150 smx_ctx_java_stop(1);
153 static void smx_ctx_java_suspend(smx_context_t context)
155 jprocess_unschedule(context);
159 smx_ctx_java_resume(smx_context_t old_context, smx_context_t new_context)
161 jprocess_schedule(new_context);