X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/850f95301f96109093c438def7238f07c6ae7d7e..51dcb8e712855f3cb16800ddea745ef6fc8d79e9:/src/surf/storage.c

diff --git a/src/surf/storage.c b/src/surf/storage.c
index 85fdb6d126..4d82cd3189 100644
--- a/src/surf/storage.c
+++ b/src/surf/storage.c
@@ -30,18 +30,16 @@ static int storage_selective_update = 0;
 static xbt_swag_t
     storage_running_action_set_that_does_not_need_being_checked = NULL;
 
+static xbt_dynar_t storage_list;
+
 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
 
-typedef struct surf_storage {
-  s_surf_resource_t generic_resource;
-  const char* type;
-  const char* content; /*should be a dict */
-} s_surf_storage_t, *surf_storage_t;
-
 static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size);
+static int storage_action_unref(surf_action_t action);
 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state);
-static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_action_storage_type_t type);
+static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type);
+static void free_storage_content(void *p);
 
 static surf_action_t storage_action_stat(void *storage, surf_file_t stream)
 {
@@ -51,12 +49,84 @@ static surf_action_t storage_action_stat(void *storage, surf_file_t stream)
   return action;
 }
 
+static surf_action_t storage_action_ls(void *storage, const char* path)
+{
+  surf_action_t action = storage_action_execute(storage,0, LS);
+  action->ls_dict = NULL;
+  xbt_dict_t ls_dict = xbt_dict_new();
+
+  char* key;
+  surf_stat_t data = NULL;
+  xbt_dict_cursor_t cursor = NULL;
+
+  xbt_dynar_t dyn = NULL;
+  char* file = NULL;
+
+  // foreach file int the storage
+  xbt_dict_foreach(((storage_t)storage)->content,cursor,key,data){
+    // Search if file start with the prefix 'path'
+    if(xbt_str_start_with(key,path)){
+      file = &key[strlen(path)];
+
+      // Split file with '/'
+      dyn = xbt_str_split(file,"/");
+      file = xbt_dynar_get_as(dyn,0,char*);
+
+      // file
+      if(xbt_dynar_length(dyn) == 1){
+        xbt_dict_set(ls_dict,file,&(data->stat),NULL);
+      }
+      // Directory
+      else
+      {
+        // if directory does not exist yet in dict
+        if(!xbt_dict_get_or_null(ls_dict,file))
+          xbt_dict_set(ls_dict,file,NULL,NULL);
+      }
+      xbt_dynar_free(&dyn);
+    }
+  }
+
+  action->ls_dict = ls_dict;
+  return action;
+}
+
+static surf_action_t storage_action_unlink(void *storage, surf_file_t stream)
+{
+  surf_action_t action = storage_action_execute(storage,0, UNLINK);
+
+  // Add memory to storage
+  ((storage_t)storage)->used_size -= stream->content->stat.size;
+
+  // Remove the file from storage
+  xbt_dict_t content_dict = ((storage_t)storage)->content;
+  xbt_dict_remove(content_dict,stream->name);
+
+  free(stream->name);
+  stream->content = NULL;
+  xbt_free(stream);
+
+  return action;
+}
+
 static surf_action_t storage_action_open(void *storage, const char* mount, const char* path, const char* mode)
 {
   XBT_DEBUG("\tOpen file '%s'",path);
   xbt_dict_t content_dict = ((storage_t)storage)->content;
-  surf_stat_t content = xbt_dict_get(content_dict,path);
+  surf_stat_t content = xbt_dict_get_or_null(content_dict,path);
 
+  // if file does not exist create an empty file
+  if(!content){
+    content = xbt_new0(s_surf_stat_t,1);
+    content->stat.date = xbt_strdup("");
+    content->stat.group = xbt_strdup("");
+    content->stat.size = 0;
+    content->stat.time = xbt_strdup("");
+    content->stat.user = xbt_strdup("");
+    content->stat.user_rights = xbt_strdup("");
+    xbt_dict_set(content_dict,path,content,NULL);
+    XBT_DEBUG("File '%s' was not found, file created.",path);
+  }
   surf_file_t file = xbt_new0(s_surf_file_t,1);
   file->name = xbt_strdup(path);
   file->content = content;
@@ -70,19 +140,27 @@ static surf_action_t storage_action_open(void *storage, const char* mount, const
 static surf_action_t storage_action_close(void *storage, surf_file_t fp)
 {
   char *filename = fp->name;
+  XBT_DEBUG("\tClose file '%s' size '%f'",filename,fp->content->stat.size);
+  // unref write actions from storage
+  surf_action_storage_t write_action;
+  unsigned int i;
+  xbt_dynar_foreach(((storage_t)storage)->write_actions,i,write_action) {
+    if ((write_action->generic_lmm_action.generic_action.file) == fp) {
+      xbt_dynar_cursor_rm(((storage_t)storage)->write_actions, &i);
+      storage_action_unref((surf_action_t) write_action);
+    }
+  }
+
   free(fp->name);
   fp->content = NULL;
   xbt_free(fp);
   surf_action_t action = storage_action_execute(storage,0, CLOSE);
-  XBT_DEBUG("\tClose file '%s'",filename);
   return action;
 }
 
-static surf_action_t storage_action_read(void *storage, void* ptr, size_t size, size_t nmemb, surf_file_t stream)
+static surf_action_t storage_action_read(void *storage, void* ptr, double size, size_t nmemb, surf_file_t stream)
 {
-  char *filename = stream->name;
   surf_stat_t content = stream->content;
-  XBT_DEBUG("\tRead file '%s' size '%zu/%zu'",filename,size,content->stat.size);
   if(size > content->stat.size)
     size = content->stat.size;
   surf_action_t action = storage_action_execute(storage,size,READ);
@@ -93,30 +171,30 @@ static surf_action_t storage_action_write(void *storage, const void* ptr, size_t
 {
   char *filename = stream->name;
   surf_stat_t content = stream->content;
-  XBT_DEBUG("\tWrite file '%s' size '%zu/%zu'",filename,size,content->stat.size);
-
-  // update file size
-  content->stat.size += size;
-  // update disk space
-  ((storage_t)storage)->used_size =+ size;
+  XBT_DEBUG("\tWrite file '%s' size '%zu/%f'",filename,size,content->stat.size);
 
   surf_action_t action = storage_action_execute(storage,size,WRITE);
-  // if(used_size==size) {
-  //   storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
-  // }
+  action->file = stream;
+
+  // If the storage is full
+  if(((storage_t)storage)->used_size==((storage_t)storage)->size) {
+    storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
+  }
   return action;
 }
 
-static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_action_storage_type_t type)
+static surf_action_t storage_action_execute (void *storage, double size, e_surf_action_storage_type_t type)
 {
   surf_action_storage_t action = NULL;
   storage_t STORAGE = storage;
 
-  XBT_IN("(%s,%zu)", surf_resource_name(STORAGE), size);
+  XBT_IN("(%s,%f)", surf_resource_name(STORAGE), size);
   action =
       surf_action_new(sizeof(s_surf_action_storage_t), size, surf_storage_model,
           STORAGE->state_current != SURF_RESOURCE_ON);
 
+  // Save the storage on action
+  action->storage = storage;
   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
                                                    calloc but it seems to help valgrind... */
 
@@ -131,6 +209,8 @@ static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_
   case OPEN:
   case CLOSE:
   case STAT:
+  case UNLINK:
+  case LS:
     break;
   case READ:
     lmm_expand(storage_maxmin_system, STORAGE->constraint_read,
@@ -139,9 +219,11 @@ static surf_action_t storage_action_execute (void *storage, size_t size, e_surf_
   case WRITE:
     lmm_expand(storage_maxmin_system, STORAGE->constraint_write,
                GENERIC_LMM_ACTION(action).variable, 1.0);
+    xbt_dynar_push(((storage_t)storage)->write_actions,&action);
+    surf_action_ref((surf_action_t) action);
     break;
   }
-
+  action->type = type;
   XBT_OUT();
   return (surf_action_t) action;
 }
@@ -159,6 +241,7 @@ static void* storage_create_resource(const char* id, const char* model,const cha
   storage->state_current = SURF_RESOURCE_ON;
   storage->used_size = 0;
   storage->size = 0;
+  storage->write_actions = xbt_dynar_new(sizeof(char *),NULL);
 
   storage_type_t storage_type = xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
   double Bread  = atof(xbt_dict_get(storage_type->properties,"Bread"));
@@ -180,6 +263,9 @@ static void* storage_create_resource(const char* id, const char* model,const cha
       storage_type->properties,
       Bread);
 
+  if(!storage_list) storage_list=xbt_dynar_new(sizeof(char *),NULL);
+  xbt_dynar_push(storage_list,&storage);
+
   return storage;
 }
 
@@ -191,6 +277,9 @@ static void storage_finalize(void)
   surf_model_exit(surf_storage_model);
   surf_storage_model = NULL;
 
+  if(storage_list)
+    xbt_dynar_free(&storage_list);
+
   xbt_swag_free
       (storage_running_action_set_that_does_not_need_being_checked);
   storage_running_action_set_that_does_not_need_being_checked = NULL;
@@ -203,28 +292,39 @@ static void storage_update_actions_state(double now, double delta)
   xbt_swag_t running_actions = surf_storage_model->states.running_action_set;
 
   // Update the disk usage
-//  foreach disk {
-//    rate = 0
-//    foreach write_action in disk {
-//      rate += value(variable(action))
-//     }
-//   used_size += delta * rate
-//  }
+  // Update the file size
+  // Foreach action of type write
+  xbt_swag_foreach_safe(action, next_action, running_actions) {
+    if(action->type == WRITE)
+    {
+      double rate = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
+      ((storage_t)(action->storage))->used_size += delta * rate; // disk usage
+      ((surf_action_t)action)->file->content->stat.size += delta * rate; // file size
+    }
+  }
+
   xbt_swag_foreach_safe(action, next_action, running_actions) {
+
     double_update(&(GENERIC_ACTION(action).remains),
                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
+
     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
       double_update(&(GENERIC_ACTION(action).max_duration), delta);
-    // if(remains>0 and weight(variable(action))>0 && used_size == size) {
-    // GENERIC_ACTION(action).finish = surf_get_clock();
-    // storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
-    // } else
-    if ((GENERIC_ACTION(action).remains <= 0) &&
-        (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
+
+    if(GENERIC_ACTION(action).remains > 0 &&
+        lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0 &&
+        ((storage_t)action->storage)->used_size == ((storage_t)action->storage)->size)
+    {
+      GENERIC_ACTION(action).finish = surf_get_clock();
+      storage_action_state_set((surf_action_t) action, SURF_ACTION_FAILED);
+    } else if ((GENERIC_ACTION(action).remains <= 0) &&
+        (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0))
+    {
       GENERIC_ACTION(action).finish = surf_get_clock();
       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
-               (GENERIC_ACTION(action).max_duration <= 0)) {
+               (GENERIC_ACTION(action).max_duration <= 0))
+    {
       GENERIC_ACTION(action).finish = surf_get_clock();
       storage_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
     }
@@ -237,19 +337,27 @@ static double storage_share_resources(double NOW)
 {
   XBT_DEBUG("storage_share_resources %f",NOW);
   s_surf_action_storage_t action;
+  unsigned int i,j;
+  storage_t storage;
+  surf_action_storage_t write_action;
+
   double min_completion = generic_maxmin_share_resources(surf_storage_model->states.running_action_set,
       xbt_swag_offset(action, generic_lmm_action.variable),
       storage_maxmin_system, lmm_solve);
-  /*
-   foreach(disk) {
-      rate = 0
-      foreach write_action in disk {
-          rate += value(variable(action));
-      }
-      if(rate>0) {
-        min_completion = MIN(min_completion, (size-used_size)/rate);
-      }
-  }*/
+
+  double rate;
+  // Foreach disk
+  xbt_dynar_foreach(storage_list,i,storage)
+  {
+    rate = 0;
+    // Foreach write action on disk
+    xbt_dynar_foreach(storage->write_actions,j,write_action)
+    {
+      rate += lmm_variable_getvalue(write_action->generic_lmm_action.variable);
+    }
+    if(rate > 0)
+      min_completion = MIN(min_completion, (storage->size-storage->used_size)/rate);
+  }
 
   return min_completion;
 }
@@ -408,7 +516,8 @@ static void surf_storage_model_init_internal(void)
   surf_storage_model->extension.storage.read = storage_action_read;
   surf_storage_model->extension.storage.write = storage_action_write;
   surf_storage_model->extension.storage.stat = storage_action_stat;
-  surf_storage_model->extension.storage.create_resource = storage_create_resource;
+  surf_storage_model->extension.storage.unlink = storage_action_unlink;
+  surf_storage_model->extension.storage.ls = storage_action_ls;
 
   if (!storage_maxmin_system) {
     storage_maxmin_system = lmm_system_new(storage_selective_update);
@@ -480,7 +589,7 @@ static xbt_dict_t parse_storage_content(char *filename, unsigned long *used_size
   char time[12];
   char path[1024];
   int nb;
-  long size;
+  unsigned long size;
 
   surf_stat_t content;
 
@@ -589,6 +698,7 @@ static XBT_INLINE void surf_storage_resource_free(void *r)
   // specific to storage
   storage_t storage = r;
   xbt_dict_free(&storage->content);
+  xbt_dynar_free(&storage->write_actions);
   // generic resource
   surf_resource_free(r);
 }