1 /* context_java - implementation of context switching for java threads */
3 /* Copyright (c) 2009, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include <xbt/function_types.h>
11 #include <simix/simix.h>
12 #include "smx_context_java.h"
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(jmsg, bindings, "MSG for Java(TM)");
17 smx_ctx_java_factory_create_context(xbt_main_func_t code, int argc,
19 void_pfn_smxprocess_t cleanup_func,
22 static void smx_ctx_java_free(smx_context_t context);
23 static void smx_ctx_java_start(smx_context_t context);
24 static void smx_ctx_java_stop(smx_context_t context);
25 static void smx_ctx_java_suspend(smx_context_t context);
26 static void smx_ctx_java_resume(smx_context_t new_context);
27 static void smx_ctx_java_runall(xbt_swag_t processes);
29 void SIMIX_ctx_java_factory_init(smx_context_factory_t * factory)
31 /* instantiate the context factory */
32 smx_ctx_base_factory_init(factory);
34 (*factory)->create_context = smx_ctx_java_factory_create_context;
35 /* Leave default behavior of (*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)->runall = (smx_pfn_context_runall_t)smx_ctx_java_runall;
40 (*factory)->name = "ctx_java_factory";
44 smx_ctx_java_factory_create_context(xbt_main_func_t code, int argc,
46 void_pfn_smxprocess_t cleanup_func,
49 fprintf(stderr,"XXXX Create Context\n");
50 smx_ctx_java_t context = xbt_new0(s_smx_ctx_java_t, 1);
52 /* If the user provided a function for the process then use it
53 otherwise is the context for maestro */
55 context->super.cleanup_func = cleanup_func;
56 context->jprocess = (jobject) code;
57 context->jenv = get_current_thread_env();
58 jprocess_start(((smx_ctx_java_t) context)->jprocess,
59 get_current_thread_env());
61 smx_current_context = (smx_context_t)context;
63 context->super.data = data;
65 return (smx_context_t) context;
68 static void smx_ctx_java_free(smx_context_t context)
71 smx_ctx_java_t ctx_java = (smx_ctx_java_t) context;
73 if (ctx_java->jprocess) {
74 jobject jprocess = ctx_java->jprocess;
76 ctx_java->jprocess = NULL;
78 /* if the java process is alive join it */
79 if (jprocess_is_alive(jprocess, get_current_thread_env()))
80 jprocess_join(jprocess, get_current_thread_env());
84 smx_ctx_base_free(context);
87 static void smx_ctx_java_stop(smx_context_t context)
89 jobject jprocess = NULL;
90 fprintf(stderr,"XXXX Context Stop\n");
92 smx_ctx_java_t ctx_java;
94 if (context->cleanup_func)
95 (*(context->cleanup_func)) (context->data);
97 ctx_java = (smx_ctx_java_t) context;
99 /*FIXME: is this really necessary? Seems to. */
100 if (smx_current_context->iwannadie) {
102 /* The maestro call xbt_context_stop() with an exit code set to one */
103 if (ctx_java->jprocess) {
104 /* if the java process is alive schedule it */
105 if (jprocess_is_alive(ctx_java->jprocess, get_current_thread_env())) {
106 jprocess_schedule(smx_current_context);
107 jprocess = ctx_java->jprocess;
108 ctx_java->jprocess = NULL;
110 /* interrupt the java process */
111 jprocess_exit(jprocess, get_current_thread_env());
115 /* the java process exits */
116 jprocess = ctx_java->jprocess;
117 ctx_java->jprocess = NULL;
120 /* delete the global reference associated with the java process */
121 jprocess_delete_global_ref(jprocess, get_current_thread_env());
124 static void smx_ctx_java_suspend(smx_context_t context)
126 jprocess_unschedule(context);
129 // FIXME: inline those functions
130 static void smx_ctx_java_resume(smx_context_t new_context)
132 fprintf(stderr,"XXXX Context Resume\n");
133 jprocess_schedule(new_context);
136 static void smx_ctx_java_runall(xbt_swag_t processes)
138 smx_process_t process;
139 smx_context_t old_context;
140 fprintf(stderr,"XXXX Run all\n");
142 while ((process = xbt_swag_extract(processes))) {
143 old_context = smx_current_context;
144 smx_current_context = SIMIX_process_get_context(process);
145 smx_ctx_java_resume(smx_current_context);
146 smx_current_context = old_context;
148 fprintf(stderr,"XXXX End of run all\n");