X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/110b155a3d6309c2f780ca870d8c14391796ccd4..817f8a03cce56319fcefcbb7abe26a3d4153035a:/src/surf/surf.c

diff --git a/src/surf/surf.c b/src/surf/surf.c
index 6daa250ad3..89b92c3cd2 100644
--- a/src/surf/surf.c
+++ b/src/surf/surf.c
@@ -5,24 +5,152 @@
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
+#include <ctype.h>
+
 #include "surf_private.h"
 #include "xbt/module.h"
 
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
+				"Logging specific to SURF (kernel)");
+
+int use_sdp_solver=0;
+
+/* Additional declarations for Windows potability. */
+
+#ifndef MAX_DRIVE
+#define MAX_DRIVE 26
+#endif 
+
+#ifdef _WIN32
+#include <windows.h>
+static const char* disk_drives_letter_table[MAX_DRIVE] =
+{
+        "A:\\",
+        "B:\\",
+        "C:\\",
+        "D:\\",
+        "E:\\",
+        "F:\\",
+        "G:\\",
+        "H:\\",
+        "I:\\",
+        "J:\\",
+        "K:\\",
+        "L:\\",
+        "M:\\",
+        "N:\\",
+        "O:\\",
+        "P:\\",
+        "Q:\\",
+        "R:\\",
+        "S:\\",
+        "T:\\",
+        "U:\\",
+        "V:\\",
+        "W:\\",
+        "X:\\",
+        "Y:\\",
+        "Z:\\"
+};
+#endif /* #ifdef _WIN32 */
+
+/*
+ * Returns the initial path. On Windows the initial path is
+ * the current directory for the current process in the other
+ * case the function returns "./" that represents the current
+ * directory on Unix/Linux platforms.
+ */
+			
+const char* __surf_get_initial_path(void)
+{
+
+	#ifdef _WIN32
+	unsigned i;
+	char current_directory[MAX_PATH + 1] = {0};
+	unsigned int len = GetCurrentDirectory(MAX_PATH + 1,current_directory);
+	char root[4] = {0};
+
+	if(!len)
+		return NULL;
+
+	strncpy(root,current_directory,3);
+
+	for(i = 0; i<MAX_DRIVE;i++)
+	{
+		if(toupper(root[0]) == disk_drives_letter_table[i][0])
+			return disk_drives_letter_table[i];
+	}
+
+	return NULL;
+	#else
+	return "./";
+	#endif
+}
+
+/* The __surf_is_absolute_file_path() returns 1 if
+ * file_path is a absolute file path, in the other
+ * case the function returns 0.
+ */
+int __surf_is_absolute_file_path(const char* file_path)
+{
+        #ifdef _WIN32
+        WIN32_FIND_DATA wfd ={0};
+        HANDLE hFile = FindFirstFile(file_path,&wfd);
+
+        if(INVALID_HANDLE_VALUE == hFile)
+                return 0;
+
+        FindClose(hFile);
+        return 1;
+        #else
+        return (file_path[0] == '/');
+        #endif
+}
+
+typedef struct surf_resource_object {
+  surf_resource_t resource;
+} s_surf_resource_object_t, *surf_resource_object_t;
+
 static double NOW = 0;
 
 xbt_dynar_t resource_list = NULL;
 tmgr_history_t history = NULL;
 lmm_system_t maxmin_system = NULL;
+xbt_dynar_t surf_path = NULL;
+const char *surf_action_state_names[6] = {
+  "SURF_ACTION_READY", 
+  "SURF_ACTION_RUNNING", 
+  "SURF_ACTION_FAILED", 
+  "SURF_ACTION_DONE", 
+  "SURF_ACTION_TO_FREE", 
+  "SURF_ACTION_NOT_IN_THE_SYSTEM"
+};
 
 double generic_maxmin_share_resources(xbt_swag_t running_actions,
-				      size_t offset)
+				       size_t offset)
+{
+  return  generic_maxmin_share_resources2(running_actions, offset,
+					  maxmin_system);
+}
+
+double generic_maxmin_share_resources2(xbt_swag_t running_actions,
+				       size_t offset,
+				       lmm_system_t sys)
 {
   surf_action_t action = NULL;
   double min = -1;
   double value = -1;
 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
 
-  lmm_solve(maxmin_system);
+  if(!use_sdp_solver)
+    lmm_solve(sys);
+  else {
+#ifdef HAVE_SDP
+    sdp_solve(sys);
+#else
+    xbt_assert0(0, "No CSDP found! You cannot use this model!");
+#endif
+  }
 
   xbt_swag_foreach(action, running_actions) {
     value = lmm_variable_getvalue(VARIABLE(action));
@@ -34,12 +162,13 @@ double generic_maxmin_share_resources(xbt_swag_t running_actions,
     return -1.0;
 
   if (value > 0) {
-    min = value = action->remains / value;
+    min = action->remains / value;
     if ((action->max_duration >= 0) && (action->max_duration < min))
       min = action->max_duration;
   } else
     min = action->max_duration;
 
+  DEBUG5("Found an action (%p: duration = %f, remains = %f, value = %f) ! %f",action, action->max_duration, action->remains, value, min); 
 
   for (action = xbt_swag_getNext(action, running_actions->offset);
        action;
@@ -47,12 +176,18 @@ double generic_maxmin_share_resources(xbt_swag_t running_actions,
     value = lmm_variable_getvalue(VARIABLE(action));
     if (value > 0) {
       value = action->remains / value;
-      if (value < min)
+      if (value < min) {
 	min = value;
+	DEBUG2("Updating min (value) with %p: %f",action, min);
+      }
     }
-    if ((action->max_duration >= 0) && (action->max_duration < min))
+    if ((action->max_duration >= 0) && (action->max_duration < min)) {
       min = action->max_duration;
+      DEBUG2("Updating min (duration) with %p: %f",action, min);
+    }
   }
+  DEBUG1("min value : %f",min);
+
 #undef VARIABLE
   return min;
 }
@@ -73,10 +208,18 @@ e_surf_action_state_t surf_action_get_state(surf_action_t action)
   return SURF_ACTION_NOT_IN_THE_SYSTEM;
 }
 
+double surf_action_get_start_time(surf_action_t action) {
+  return action->start;
+}
+
+double surf_action_get_finish_time(surf_action_t action) {
+  return action->finish;
+}
+
 void surf_action_free(surf_action_t * action)
 {
   (*action)->resource_type->common_public->action_cancel(*action);
-  xbt_free(*action);
+  free(*action);
   *action = NULL;
 }
 
@@ -85,7 +228,7 @@ void surf_action_change_state(surf_action_t action,
 {
   surf_action_state_t action_state =
       &(action->resource_type->common_public->states);
-
+  XBT_IN2("(%p,%s)", action, surf_action_state_names[state]);
   xbt_swag_remove(action, action->state_set);
 
   if (state == SURF_ACTION_READY)
@@ -101,6 +244,7 @@ void surf_action_change_state(surf_action_t action,
 
   if (action->state_set)
     xbt_swag_insert(action, action->state_set);
+  XBT_OUT;
 }
 
 void surf_action_set_data(surf_action_t action,
@@ -111,7 +255,37 @@ void surf_action_set_data(surf_action_t action,
 
 void surf_init(int *argc, char **argv)
 {
+  int i,j;
+  char *opt;
+  
+  const char* initial_path;
+
   xbt_init(argc, argv);
+  if (!surf_path) {
+    
+    /* retrieves the current directory of the current process*/
+    initial_path = __surf_get_initial_path();
+		
+	xbt_assert0((initial_path), "__surf_get_initial_path() failed! Can't resolves current Windows directory");
+    
+    surf_path = xbt_dynar_new(sizeof(char*), NULL);
+    xbt_dynar_push(surf_path,&initial_path);
+
+    for (i=1; i<*argc; i++) {
+      if (!strncmp(argv[i],"--surf-path=",strlen("--surf-path="))) {
+	opt=strchr(argv[i],'=');
+	opt++;
+	xbt_dynar_push(surf_path,&opt);
+	/*remove this from argv*/
+	for (j=i+1; j<*argc; j++) {
+	  argv[j-1] = argv[j];
+	} 
+	argv[j-1] = NULL;
+	(*argc)--;
+	i--; /* compensate effect of next loop incrementation */
+      }
+    }
+  }
   if (!resource_list)
     resource_list = xbt_dynar_new(sizeof(surf_resource_private_t), NULL);
   if (!history)
@@ -120,7 +294,42 @@ void surf_init(int *argc, char **argv)
     maxmin_system = lmm_system_new();
 }
 
-void surf_finalize(void)
+static char* path_name = NULL;
+FILE *surf_fopen(const char *name, const char *mode)
+{
+  int i; 
+  char* path = NULL;
+  FILE *file = NULL;
+  int path_name_len = 0; /* don't count '\0' */
+
+  xbt_assert0(name, "Need a non-NULL file name");
+
+  xbt_assert0(surf_path,"surf_init has to be called before using surf_fopen");
+   
+  if (__surf_is_absolute_file_path(name)) { /* don't mess with absolute file names */
+    return fopen(name,mode);
+     
+  } else { /* search relative files in the path */
+   
+    if(!path_name) {
+       path_name_len = strlen(name);
+       path_name=xbt_new0(char,path_name_len+1);
+    }
+
+    xbt_dynar_foreach(surf_path,i,path) {
+      if(path_name_len < strlen(path)+strlen(name)+1) {
+	 path_name_len = strlen(path)+strlen(name)+1; /* plus '/' */
+	 path_name=xbt_realloc(path_name,path_name_len+1);
+      }
+      sprintf(path_name,"%s/%s",path, name);
+      file = fopen(path_name,mode);
+      if (file) return file;
+    }
+  }
+  return file;
+}
+
+void surf_exit(void)
 {
   int i;
   surf_resource_t resource = NULL;
@@ -140,7 +349,16 @@ void surf_finalize(void)
   if (resource_list)
     xbt_dynar_free(&resource_list);
 
+  if(surf_path) 
+    xbt_dynar_free(&surf_path);
+
   tmgr_finalize();
+  surf_parse_lex_destroy();
+  if(path_name) {
+    free(path_name);
+    path_name = NULL;
+  }
+  xbt_exit();
 }
 
 double surf_solve(void)
@@ -157,6 +375,7 @@ double surf_solve(void)
   int i;
 
   if (first_run) {
+    DEBUG0("First Run! Let's \"purge\" events and put resources in the right state");
     while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
       if (next_event_date > NOW)
 	break;
@@ -177,20 +396,27 @@ double surf_solve(void)
 
   min = -1.0;
 
+  DEBUG0("Looking for next action end");
   xbt_dynar_foreach(resource_list, i, resource) {
     resource_next_action_end =
 	resource->common_private->share_resources(NOW);
+    DEBUG2("Resource [%s] : next action end = %f",resource->common_public->name,
+	   resource_next_action_end);
     if (((min < 0.0) || (resource_next_action_end < min))
 	&& (resource_next_action_end >= 0.0))
       min = resource_next_action_end;
   }
+  DEBUG1("Next action end : %f", min);
 
   if (min < 0.0)
-    return 0.0;
+    return -1.0;
 
+  DEBUG0("Looking for next event");
   while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
+    DEBUG1("Next event : %f",next_event_date);
     if (next_event_date > NOW + min)
       break;
+    DEBUG0("Updating resources");
     while ((event =
 	    tmgr_history_get_next_event_leq(history, next_event_date,
 					    &value,
@@ -198,6 +424,7 @@ double surf_solve(void)
       if (resource_obj->resource->common_private->
 	  resource_used(resource_obj)) {
 	min = next_event_date - NOW;
+	DEBUG1("This event will modify resource state. Next event set to %f", min);
       }
       /* update state of resource_obj according to new value. Does not touch lmm.
          It will be modified if needed when updating actions */
@@ -206,13 +433,14 @@ double surf_solve(void)
     }
   }
 
+  DEBUG1("Duration set to %f", min);
+
+  NOW = NOW + min;
 
   xbt_dynar_foreach(resource_list, i, resource) {
     resource->common_private->update_actions_state(NOW, min);
   }
 
-  NOW = NOW + min;
-
   return min;
 }