XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_smurf, simix,
"Logging specific to SIMIX (SMURF)");
-static smx_req_t* req_vector=NULL;
+/* Requests to handle at the end of this round of scheduling user processes */
+static xbt_heap_t req_todo;
+/* to protect the write actions in the heap */
+static xbt_os_mutex_t sync_req_positions;
void SIMIX_request_init(void)
{
- req_vector = xbt_new0(smx_req_t,1);/* enough room for maestro's requests */
+ req_todo = xbt_heap_new(5,NULL);
+ sync_req_positions = xbt_os_mutex_init();
}
void SIMIX_request_destroy(void)
{
- free(req_vector);
- req_vector = NULL;
+ xbt_heap_free(req_todo);
+ xbt_os_mutex_destroy(sync_req_positions);
}
-void SIMIX_request_push(smx_req_t req)
+/* FIXME: we may want to save the initialization of issuer... */
+XBT_INLINE smx_req_t SIMIX_req_mine() {
+ smx_process_t issuer = SIMIX_process_self();
+ return &issuer->request;
+}
+
+void SIMIX_request_push()
{
- req->issuer = SIMIX_process_self();
- if (req->issuer != simix_global->maestro_process){
- req_vector[req->issuer->pid] = req;
- req->issuer->request = req;
- DEBUG2("Yield process '%s' on request of type %d", req->issuer->name, req->call);
+ smx_process_t issuer = SIMIX_process_self();
+ if (issuer != simix_global->maestro_process){
+ issuer->request.issuer = issuer;
+
+ if (_surf_parallel_contexts)
+ xbt_os_mutex_acquire(sync_req_positions);
+ xbt_heap_push(req_todo,&issuer->request,issuer->pid);
+ DEBUG3("Pushed request %d of %s; now %d requests waiting",
+ issuer->request.call,issuer->name,xbt_heap_size(req_todo));
+ if (_surf_parallel_contexts)
+ xbt_os_mutex_release(sync_req_positions);
+
+ DEBUG2("Yield process '%s' on request of type %d", issuer->name, issuer->request.call);
SIMIX_process_yield();
} else {
- SIMIX_request_pre(req);
+ SIMIX_request_pre(&issuer->request);
}
}
smx_req_t SIMIX_request_pop(void)
{
- smx_req_t request = NULL;
- int i;
- for (i=1;i<SIMIX_process_get_maxpid();i++)
- if (req_vector[i]) {
- request = req_vector[i];
- req_vector[i]=NULL;
- break;
- }
-
- return request;
+ return xbt_heap_pop(req_todo);
}
void SIMIX_request_answer(smx_req_t req)
{
if (req->issuer != simix_global->maestro_process){
- req->issuer->request = NULL;
- xbt_swag_insert(req->issuer, simix_global->process_to_run);
+ req->issuer->request.call = REQ_NO_REQ;
+ xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, req->issuer);
}
}
void SIMIX_request_pre(smx_req_t req)
{
switch (req->call) {
+ case REQ_NO_REQ:
+ xbt_die("Asked to do the noop syscall");
+ break;
case REQ_HOST_GET_BY_NAME:
req->host_get_by_name.result =
break;
case REQ_PROCESS_CREATE:
- req_vector = xbt_realloc(req_vector,sizeof(smx_req_t)*(SIMIX_process_get_maxpid()+2));
req->process_create.result = SIMIX_process_create(
req->process_create.name,
req->process_create.code,