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);
24 static void smx_ctx_java_start(smx_context_t context);
25 static void smx_ctx_java_stop(smx_context_t context);
26 static void smx_ctx_java_suspend(smx_context_t context);
27 static void smx_ctx_java_resume(smx_context_t new_context);
29 void SIMIX_ctx_java_factory_init(smx_context_factory_t * factory)
31 /* instantiate the context factory */
32 *factory = xbt_new0(s_smx_context_factory_t, 1);
34 (*factory)->create_context = smx_ctx_java_factory_create_context;
35 (*factory)->finalize = smx_ctx_java_factory_finalize;
36 (*factory)->free = smx_ctx_java_free;
37 (*factory)->stop = smx_ctx_java_stop;
38 (*factory)->suspend = smx_ctx_java_suspend;
39 (*factory)->resume = smx_ctx_java_resume;
41 (*factory)->name = "ctx_java_factory";
44 static int smx_ctx_java_factory_finalize(smx_context_factory_t * factory)
52 smx_ctx_java_factory_create_context(xbt_main_func_t code, int argc, char** argv,
53 void_f_pvoid_t cleanup_func, void* cleanup_arg)
55 smx_ctx_java_t context = xbt_new0(s_smx_ctx_java_t, 1);
57 /* If the user provided a function for the process then use it
58 otherwise is the context for maestro */
60 context->cleanup_func = cleanup_func;
61 context->cleanup_arg = cleanup_arg;
62 context->jprocess = (jobject) code;
63 context->jenv = get_current_thread_env();
64 jprocess_start(((smx_ctx_java_t) context)->jprocess,
65 get_current_thread_env());
68 return (smx_context_t) context;
71 static void smx_ctx_java_free(smx_context_t context)
74 smx_ctx_java_t ctx_java = (smx_ctx_java_t) context;
76 if (ctx_java->jprocess) {
77 jobject jprocess = ctx_java->jprocess;
79 ctx_java->jprocess = NULL;
81 /* if the java process is alive join it */
82 if (jprocess_is_alive(jprocess, get_current_thread_env()))
83 jprocess_join(jprocess, get_current_thread_env());
91 static void smx_ctx_java_stop(smx_context_t context)
93 jobject jprocess = NULL;
95 smx_ctx_java_t ctx_java;
97 if (context->cleanup_func)
98 (*(context->cleanup_func)) (context->cleanup_arg);
100 ctx_java = (smx_ctx_java_t) context;
102 /*FIXME: is this really necessary?*/
103 if (simix_global->current_process->iwannadie) {
104 /* The maestro call xbt_context_stop() with an exit code set to one */
105 if (ctx_java->jprocess) {
106 /* if the java process is alive schedule it */
107 if (jprocess_is_alive(ctx_java->jprocess, get_current_thread_env())) {
108 jprocess_schedule(simix_global->current_process->context);
109 jprocess = ctx_java->jprocess;
110 ctx_java->jprocess = NULL;
112 /* interrupt the java process */
113 jprocess_exit(jprocess, get_current_thread_env());
118 /* the java process exits */
119 jprocess = ctx_java->jprocess;
120 ctx_java->jprocess = NULL;
123 /* delete the global reference associated with the java process */
124 jprocess_delete_global_ref(jprocess, get_current_thread_env());
127 /*static void smx_ctx_java_swap(smx_context_t context)
130 smx_context_t self = current_context;
132 current_context = context;
134 jprocess_schedule(context);
136 current_context = self;
139 if (current_context->iwannadie)
140 smx_ctx_java_stop(1);
143 static void smx_ctx_java_suspend(smx_context_t context)
145 jprocess_unschedule(context);
148 // FIXME: inline those functions
150 smx_ctx_java_resume(smx_context_t new_context)
152 jprocess_schedule(new_context);