#include <xbt/function_types.h>
-#include <simix/simix.h>
+#include <simgrid/simix.h>
+#include <xbt/ex.h>
#include "smx_context_java.h"
+#include "jxbt_utilities.h"
#include "xbt/dynar.h"
+JavaVM *get_current_vm(void);
+JavaVM *get_current_vm(void)
+{
+ JavaVM *jvm;
+ JNI_GetCreatedJavaVMs(&jvm,1,NULL);
+ return jvm;
+}
+
+
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(jmsg, bindings, "MSG for Java(TM)");
static smx_context_t my_current_context = NULL;
-static smx_context_t smx_ctx_java_self(void);
static smx_context_t
smx_ctx_java_factory_create_context(xbt_main_func_t code, int argc,
char **argv,
static void smx_ctx_java_suspend(smx_context_t context);
static void smx_ctx_java_resume(smx_context_t new_context);
static void smx_ctx_java_runall(void);
-
+static void* smx_ctx_java_thread_run(void *data);
void SIMIX_ctx_java_factory_init(smx_context_factory_t * factory)
{
/* instantiate the context factory */
(*factory)->self = smx_ctx_java_self;
(*factory)->get_data = smx_ctx_base_get_data;
}
-
-static smx_context_t smx_ctx_java_self(void)
+smx_context_t smx_ctx_java_self(void)
{
return my_current_context;
}
void_pfn_smxprocess_t cleanup_func,
void* data)
{
- XBT_DEBUG("XXXX Create Context\n");
- smx_ctx_java_t context = xbt_new0(s_smx_ctx_java_t, 1);
-
+ smx_ctx_java_t context = xbt_new0(s_smx_ctx_java_t, 1);
/* If the user provided a function for the process then use it
otherwise is the context for maestro */
if (code) {
- context->super.cleanup_func = cleanup_func;
- context->jprocess = (jobject) code;
- context->jenv = get_current_thread_env();
- jprocess_start(((smx_ctx_java_t) context)->jprocess,
- get_current_thread_env());
- }else{
+ if (argc == 0) {
+ context->jprocess = (jobject) code;
+ }
+ else {
+ context->jprocess = NULL;
+ }
+ context->super.cleanup_func = cleanup_func;
+ context->begin = xbt_os_sem_init(0);
+ context->end = xbt_os_sem_init(0);
+
+ context->super.argc = argc;
+ context->super.argv = argv;
+ context->super.code = code;
+
+ context->thread = xbt_os_thread_create(NULL,smx_ctx_java_thread_run,context,NULL);
+ }
+ else {
+ context->thread = NULL;
my_current_context = (smx_context_t)context;
}
context->super.data = data;
return (smx_context_t) context;
}
-static void smx_ctx_java_free(smx_context_t context)
-{
- if (context) {
- smx_ctx_java_t ctx_java = (smx_ctx_java_t) context;
-
- if (ctx_java->jprocess) { /* the java process still exists */
- jobject jprocess = ctx_java->jprocess;
- ctx_java->jprocess = NULL;
+static void* smx_ctx_java_thread_run(void *data) {
+ smx_ctx_java_t context = (smx_ctx_java_t)data;
+ //Attach the thread to the JVM
+ JNIEnv *env;
+ JavaVM *jvm = get_current_vm();
+ jint error = (*jvm)->AttachCurrentThread(jvm, (void **) &env, NULL);
+ xbt_assert((error == JNI_OK), "The thread could not be attached to the JVM");
+ context->jenv = get_current_thread_env();
+ //Wait for the first scheduling round to happen.
+ xbt_os_sem_acquire(context->begin);
+ //Create the "Process" object if needed.
+ if (context->super.argc > 0) {
+ (*(context->super.code))(context->super.argc, context->super.argv);
+ }
+ xbt_assert((context->jprocess != NULL), "Process not created...");
+ //wait for the process to be able to begin
+ //TODO: Cache it
+ jfieldID jprocess_field_Process_startTime = jxbt_get_sfield(env, "org/simgrid/msg/Process", "startTime", "D");
+ jdouble startTime = (*env)->GetDoubleField(env, context->jprocess, jprocess_field_Process_startTime);
+ if (startTime > MSG_get_clock()) {
+ MSG_process_sleep(startTime - MSG_get_clock());
+ }
+ //Execution of the "run" method.
+ jmethodID id = jxbt_get_smethod(env, "org/simgrid/msg/Process", "run", "()V");
+ xbt_assert( (id != NULL), "Method not found...");
+ (*env)->CallVoidMethod(env, context->jprocess, id);
+ smx_ctx_java_stop((smx_context_t)context);
- /* stop it */
- XBT_DEBUG("The process still exists, making it exit now");
- jprocess_exit(jprocess, get_current_thread_env());
+ return NULL;
+}
- /* it's dead now, remove it from the JVM */
- jprocess_delete_global_ref(jprocess, get_current_thread_env());
- }
+static void smx_ctx_java_free(smx_context_t context)
+{
+ if (context) {
+ smx_ctx_java_t ctx_java = (smx_ctx_java_t) context;
+ if (ctx_java->thread) { /* We are not in maestro context */
+ xbt_os_thread_join(ctx_java->thread, NULL);
+ xbt_os_sem_destroy(ctx_java->begin);
+ xbt_os_sem_destroy(ctx_java->end);
+ }
}
-
smx_ctx_base_free(context);
}
+
void smx_ctx_java_stop(smx_context_t context)
{
- xbt_assert(context == my_current_context,
- "The context to stop must be the current one");
+ smx_ctx_java_t ctx_java = (smx_ctx_java_t)context;
+ xbt_assert(context == my_current_context,
+ "The context to stop must be the current one");
/* I am the current process and I am dying */
- smx_ctx_base_stop(context);
-
- XBT_DEBUG("I am dying");
+ if (context->iwannadie == -1) {
+ context->iwannadie = 0;
+ JNIEnv *env = get_current_thread_env();
+ jxbt_throw_by_name(env, "org/simgrid/msg/ProcessKilledError", bprintf("Process killed :)"));
+ THROWF(cancel_error, 0, "process cancelled");
+ }
+ else {
+ smx_ctx_base_stop(context);
+ /* detach the thread and kills it */
+ JNIEnv *env = ctx_java->jenv;
+ (*env)->DeleteGlobalRef(env,ctx_java->jprocess);
+ JavaVM *jvm = get_current_vm();
+ jint error = (*jvm)->DetachCurrentThread(jvm);
+ xbt_assert((error == JNI_OK), "The thread couldn't be detached.");
+ xbt_os_sem_release(((smx_ctx_java_t)context)->end);
+ xbt_os_thread_exit(NULL);
- /* suspend myself again, smx_ctx_java_free() will destroy me later
- * from maeastro */
- jprocess_unschedule(context);
- xbt_die("This function was not supposed to return");
+ }
}
static void smx_ctx_java_suspend(smx_context_t context)
{
- jprocess_unschedule(context);
+ smx_ctx_java_t ctx_java = (smx_ctx_java_t) context;
+ xbt_os_sem_release(ctx_java->end);
+ xbt_os_sem_acquire(ctx_java->begin);
}
// FIXME: inline those functions
static void smx_ctx_java_resume(smx_context_t new_context)
{
XBT_DEBUG("XXXX Context Resume\n");
- jprocess_schedule(new_context);
+ smx_ctx_java_t ctx_java = (smx_ctx_java_t) new_context;
+ xbt_os_sem_release(ctx_java->begin);
+ xbt_os_sem_acquire(ctx_java->end);
}
static void smx_ctx_java_runall(void)
