X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/0b892a9de2e4218184dc0b0726773f386bb38b65..d947ff7466b473eeec602007934f8336a9b17f3c:/src/mc/mc_checkpoint.c

diff --git a/src/mc/mc_checkpoint.c b/src/mc/mc_checkpoint.c
index 1a80fd5136..64d8c715a5 100644
--- a/src/mc/mc_checkpoint.c
+++ b/src/mc/mc_checkpoint.c
@@ -16,10 +16,14 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_checkpoint, mc,
 
 void *start_text_libsimgrid;
 void *start_plt_libsimgrid, *end_plt_libsimgrid;
+void *start_got_plt_libsimgrid, *end_got_plt_libsimgrid;
 void *start_plt_binary, *end_plt_binary;
+void *start_got_plt_binary, *end_got_plt_binary;
 char *libsimgrid_path;
-void *start_data_libsimgrid;
+void *start_data_libsimgrid, *start_bss_libsimgrid;
+void *start_data_binary, *start_bss_binary;
 void *start_text_binary;
+void *end_raw_heap;
 
 static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size);
 static void MC_region_restore(mc_mem_region_t reg);
@@ -33,6 +37,8 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
 static void print_local_variables_values(xbt_dynar_t all_variables);
 static void *get_stack_pointer(void *stack_context, void *heap);
 
+static void snapshot_stack_free(mc_snapshot_stack_t s);
+
 static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
 {
   mc_mem_region_t new_reg = xbt_new0(s_mc_mem_region_t, 1);
@@ -42,7 +48,7 @@ static mc_mem_region_t MC_region_new(int type, void *start_addr, size_t size)
   new_reg->data = xbt_malloc0(size);
   memcpy(new_reg->data, start_addr, size);
 
-  XBT_DEBUG("New region : type : %d, data : %p, size : %zu", type, new_reg->data, size);
+  XBT_DEBUG("New region : type : %d, data : %p (real addr %p), size : %zu", type, new_reg->data, start_addr, size);
   
   return new_reg;
 }
@@ -72,43 +78,84 @@ static void MC_snapshot_add_region(mc_snapshot_t snapshot, int type, void *start
   return;
 } 
 
-void MC_take_snapshot(mc_snapshot_t snapshot)
-{
+void MC_init_memory_map_info(){
+
+  int raw_mem_set = (mmalloc_get_current_heap() == raw_heap);
+
+  MC_SET_RAW_MEM;
+  
   unsigned int i = 0;
   s_map_region_t reg;
   memory_map_t maps = get_memory_map();
 
-  /* Save the std heap and the writable mapped pages of libsimgrid */
   while (i < maps->mapsize) {
     reg = maps->regions[i];
     if ((reg.prot & PROT_WRITE)){
-      if (maps->regions[i].pathname == NULL){
-        if (reg.start_addr == std_heap){ // only save the std heap (and not the raw one)
-          MC_snapshot_add_region(snapshot, 0, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
+      if (maps->regions[i].pathname != NULL){
+        if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
+          start_data_libsimgrid = reg.start_addr;
+          i++;
+          reg = maps->regions[i];
+          if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && i < maps->mapsize)
+            start_bss_libsimgrid = reg.start_addr;
+        }else if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
+          start_data_binary = reg.start_addr;
+          i++;
+          reg = maps->regions[i];
+          if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && reg.start_addr != std_heap && reg.start_addr != raw_heap && i < maps->mapsize){
+            start_bss_binary = reg.start_addr;
+            i++;
+          }
+        }else if(!memcmp(maps->regions[i].pathname, "[heap]", 6)){
+          end_raw_heap = reg.end_addr;
+          i++;
         }
-      } else {
+      }
+    }else if ((reg.prot & PROT_READ) && (reg.prot & PROT_EXEC)){
+      if (maps->regions[i].pathname != NULL){
         if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
-          MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
-        } 
+          start_text_libsimgrid = reg.start_addr;
+          libsimgrid_path = strdup(maps->regions[i].pathname);
+        }else if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
+          start_text_binary = reg.start_addr;
+        }
       }
     }
     i++;
   }
-
+  
   free_memory_map(maps);
+
+  MC_UNSET_RAW_MEM;
+
+  if(raw_mem_set)
+    MC_SET_RAW_MEM;
+
+}
+
+mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall){
+  return MC_take_snapshot();
 }
 
-void MC_take_snapshot_liveness(mc_snapshot_t snapshot)
+mc_snapshot_t MC_take_snapshot()
 {
 
+  int raw_mem = (mmalloc_get_current_heap() == raw_heap);
+  
+  MC_SET_RAW_MEM;
+
+  mc_snapshot_t snapshot = xbt_new0(s_mc_snapshot_t, 1);
+
   unsigned int i = 0;
   s_map_region_t reg;
   memory_map_t maps = get_memory_map();
   int nb_reg = 0;
   void *heap = NULL;
+  size_t size = 0;
+  void *start = NULL;
 
   /* Save the std heap and the writable mapped pages of libsimgrid */
-  while (i < maps->mapsize && nb_reg < 3) {
+  while (i < maps->mapsize) {
     reg = maps->regions[i];
     if ((reg.prot & PROT_WRITE)){
       if (maps->regions[i].pathname == NULL){
@@ -117,37 +164,56 @@ void MC_take_snapshot_liveness(mc_snapshot_t snapshot)
           heap = snapshot->regions[nb_reg]->data;
           nb_reg++;
         }
-      } else {
+        i++;
+      } else{ 
         if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
-          MC_snapshot_add_region(snapshot, 1, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
+          size = (char*)reg.end_addr - (char*)reg.start_addr;
+          start = reg.start_addr;
           nb_reg++;
-          start_data_libsimgrid = reg.start_addr;
-        } else {
-          if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
-            MC_snapshot_add_region(snapshot, 2, reg.start_addr, (char*)reg.end_addr - (char*)reg.start_addr);
-            nb_reg++;
+          i++;
+          reg = maps->regions[i];
+          if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && i < maps->mapsize){
+            size += (char*)reg.end_addr - (char*)reg.start_addr;
+            reg = maps->regions[i];
+            i++;
           }
-        }
-      }
-    }else if ((reg.prot & PROT_READ)){
-      if (maps->regions[i].pathname != NULL){
-        if (!memcmp(basename(maps->regions[i].pathname), "libsimgrid", 10)){
-          start_text_libsimgrid = reg.start_addr;
-          libsimgrid_path = strdup(maps->regions[i].pathname);
-        }else{
-          if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
-            start_text_binary = reg.start_addr;
+          MC_snapshot_add_region(snapshot, 1, start, size);
+        }else if(!memcmp(maps->regions[i].pathname, "[heap]", 6)){
+          end_raw_heap = reg.end_addr;
+          i++;
+        } else if (!memcmp(basename(maps->regions[i].pathname), basename(xbt_binary_name), strlen(basename(xbt_binary_name)))){
+          size = (char*)reg.end_addr - (char*)reg.start_addr;
+          start = reg.start_addr;
+          nb_reg++;
+          i++;
+          reg = maps->regions[i];
+          if(reg.pathname == NULL && (reg.prot & PROT_WRITE) && reg.start_addr != std_heap && reg.start_addr != raw_heap && i < maps->mapsize){
+            size += (char*)reg.end_addr - (char*)reg.start_addr;
+            reg = maps->regions[i];
+            i++;
           }
+          MC_snapshot_add_region(snapshot, 2, start, size);
+        }else{
+          i++;
         }
       }
+    }else{
+      i++;
     }
-    i++;
   }
 
-  snapshot->stacks = take_snapshot_stacks(heap);
+  if(_sg_mc_visited > 0 || strcmp(_sg_mc_property_file,""))
+    snapshot->stacks = take_snapshot_stacks(heap);
   
   free_memory_map(maps);
 
+  MC_UNSET_RAW_MEM;
+
+  if(raw_mem)
+    MC_SET_RAW_MEM;
+
+  return snapshot;
+
 }
 
 void MC_restore_snapshot(mc_snapshot_t snapshot)
@@ -165,6 +231,7 @@ void MC_free_snapshot(mc_snapshot_t snapshot)
   for(i=0; i < snapshot->num_reg; i++)
     MC_region_destroy(snapshot->regions[i]);
 
+  xbt_dynar_free(&(snapshot->stacks));
   xbt_free(snapshot);
 }
 
@@ -177,17 +244,19 @@ void get_libsimgrid_plt_section(){
   size_t n = 0;                 /* Amount of bytes to read by getline */
 
   char *lfields[7];
-  int i, plt_not_found = 1;
+  int i, plt_found = 0;
   unsigned long int size, offset;
 
-  char *command = bprintf( "objdump --section-headers %s", libsimgrid_path);
+  char *command = bprintf("objdump --section-headers %s", libsimgrid_path);
 
   fp = popen(command, "r");
 
-  if(fp == NULL)
+  if(fp == NULL){
     perror("popen failed");
+    xbt_abort();
+  }
 
-  while ((read = getline(&line, &n, fp)) != -1 && plt_not_found == 1) {
+  while ((read = getline(&line, &n, fp)) != -1 && plt_found != 2) {
 
     if(n == 0)
       continue;
@@ -200,7 +269,7 @@ void get_libsimgrid_plt_section(){
     if(lfields[0] == NULL)
       continue;
 
-    if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strcmp(lfields[0], "libsimgrid.so:") == 0)
+    if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strncmp(lfields[0], libsimgrid_path, strlen(libsimgrid_path)) == 0)
       continue;
 
     for (i = 1; i < 7 && lfields[i - 1] != NULL; i++) {
@@ -213,11 +282,17 @@ void get_libsimgrid_plt_section(){
         offset = strtoul(lfields[5], NULL, 16);
         start_plt_libsimgrid = (char *)start_text_libsimgrid + offset;
         end_plt_libsimgrid = (char *)start_plt_libsimgrid + size;
-        plt_not_found = 0;
-      }
+        plt_found++;
+      }else if(strcmp(lfields[1], ".got.plt") == 0){
+        size = strtoul(lfields[2], NULL, 16);
+        offset = strtoul(lfields[5], NULL, 16);
+        start_got_plt_libsimgrid = (char *)start_text_libsimgrid + offset;
+        end_got_plt_libsimgrid = (char *)start_got_plt_libsimgrid + size;
+        plt_found++;
+       }
+
     }
     
-    
   }
 
   free(command);
@@ -234,17 +309,19 @@ void get_binary_plt_section(){
   size_t n = 0;                 /* Amount of bytes to read by getline */
 
   char *lfields[7];
-  int i, plt_not_found = 1;
-  unsigned long int size, offset;
+  int i, plt_found = 0;
+  unsigned long int size;
 
   char *command = bprintf( "objdump --section-headers %s", xbt_binary_name);
 
   fp = popen(command, "r");
 
-  if(fp == NULL)
+  if(fp == NULL){
     perror("popen failed");
+    xbt_abort();
+  }
 
-  while ((read = getline(&line, &n, fp)) != -1 && plt_not_found == 1) {
+  while ((read = getline(&line, &n, fp)) != -1 && plt_found != 2) {
 
     if(n == 0)
       continue;
@@ -257,7 +334,7 @@ void get_binary_plt_section(){
     if(lfields[0] == NULL)
       continue;
 
-    if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strcmp(lfields[0], basename(xbt_binary_name)) == 0)
+    if(strcmp(lfields[0], "Sections:") == 0 || strcmp(lfields[0], "Idx") == 0 || strncmp(lfields[0], basename(xbt_binary_name), strlen(xbt_binary_name)) == 0)
       continue;
 
     for (i = 1; i < 7 && lfields[i - 1] != NULL; i++) {
@@ -267,11 +344,15 @@ void get_binary_plt_section(){
     if(i>=6){
       if(strcmp(lfields[1], ".plt") == 0){
         size = strtoul(lfields[2], NULL, 16);
-        offset = strtoul(lfields[5], NULL, 16);
-        start_plt_binary = (char *)start_text_binary + offset;
+        start_plt_binary = (void *)strtoul(lfields[3], NULL, 16);
         end_plt_binary = (char *)start_plt_binary + size;
-        plt_not_found = 0;
-      }
+        plt_found++;
+      }else if(strcmp(lfields[1], ".got.plt") == 0){
+        size = strtoul(lfields[2], NULL, 16);
+        start_got_plt_binary = (char *)strtoul(lfields[3], NULL, 16);
+        end_got_plt_binary = (char *)start_got_plt_binary + size;
+        plt_found++;
+       }
     }
     
     
@@ -304,7 +385,7 @@ static xbt_dynar_t take_snapshot_stacks(void *heap){
   xbt_dynar_foreach(stacks_areas, cursor1, current_stack){
     mc_snapshot_stack_t st = xbt_new(s_mc_snapshot_stack_t, 1);
     st->local_variables = get_local_variables_values(current_stack->context, heap);
-    st->stack_pointer = get_stack_pointer(current_stack, heap);
+    st->stack_pointer = get_stack_pointer(current_stack->context, heap);
     xbt_dynar_push(res, &st);
   }
 
@@ -334,9 +415,8 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
   
   unw_cursor_t c;
   int ret;
-  //char *stack_name;
 
-  char buf[512], frame_name[256];
+  char frame_name[256];
   
   ret = unw_init_local(&c, (unw_context_t *)stack_context);
   if(ret < 0){
@@ -344,8 +424,6 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
     xbt_abort();
   }
 
-  //stack_name = strdup(((smx_process_t)((smx_ctx_sysv_t)(stack->address))->super.data)->name);
-
   unw_word_t ip, sp, off;
   dw_frame_t frame;
  
@@ -368,23 +446,14 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
     unw_get_reg(&c, UNW_REG_IP, &ip);
     unw_get_reg(&c, UNW_REG_SP, &sp);
 
-    buf[0] = '\0';
-    if (unw_get_proc_name (&c, frame_name, sizeof (frame_name), &off) == 0){
-      if (off)
-        snprintf (buf, sizeof (buf), "<%s+0x%lx>", frame_name, (long) off);
-      else
-        snprintf (buf, sizeof (buf), "<%s>", frame_name);
-
-    }
-
-    xbt_strbuff_append(variables, bprintf("ip=%-32s\n", buf));
+    unw_get_proc_name(&c, frame_name, sizeof (frame_name), &off);
 
     frame = xbt_dict_get_or_null(mc_local_variables, frame_name);
 
-    if(frame == NULL){
-      ret = unw_step(&c);
-      continue;
-    }
+    if(frame == NULL)
+      return variables;
+
+    xbt_strbuff_append(variables, bprintf("ip=%s\n", frame_name));
 
     true_ip = (long)frame->low_pc + (long)off;
 
@@ -437,8 +506,6 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
     frame_found = 0;
     cursor = 0;
 
-    //XBT_INFO("Frame %s", frame->name);
-
     xbt_dict_foreach(frame->variables, dict_cursor, variable_name, current_variable){
       if(current_variable->location != NULL){
         switch(current_variable->location->type){
@@ -469,22 +536,17 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
           
           if(xbt_dynar_length(compose) > 0){
             if(strcmp(xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->type, "value") == 0){
-              //XBT_INFO("Variable : %s - value : %lx", current_variable->name, xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.res);
               xbt_strbuff_append(variables, bprintf("%s=%lx\n", current_variable->name, xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.res));
             }else{
-              if(*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) == NULL){
-                //XBT_INFO("Variable : %s - address : NULL", current_variable->name);
+              if((long)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address < 0 || *((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) == NULL){
                 xbt_strbuff_append(variables, bprintf("%s=NULL\n", current_variable->name));
               }else if(((long)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) > 0xffffffff) || ((long)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1,variable_value_t)->value.address) < (long)start_text_binary)){
-                //XBT_INFO("Variable : %s - value : %d", current_variable->name, (int)(long long int)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address));
-                xbt_strbuff_append(variables, bprintf("%s=%d\n", current_variable->name, (int)(long long int)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address)));
-              }else{
-                //XBT_INFO("Variable : %s - address : %p", current_variable->name, *((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address));  
+                xbt_strbuff_append(variables, bprintf("%s=%d\n", current_variable->name, (int)(long)*((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address)));
+              }else{ 
                 xbt_strbuff_append(variables, bprintf("%s=%p\n", current_variable->name, *((void**)xbt_dynar_get_as(compose, xbt_dynar_length(compose) - 1, variable_value_t)->value.address)));
               }
             }
           }else{
-            //XBT_INFO("Variable %s undefined", current_variable->name);
             xbt_strbuff_append(variables, bprintf("%s=undefined\n", current_variable->name));
           }
           break;
@@ -492,19 +554,14 @@ static xbt_strbuff_t get_local_variables_values(void *stack_context, void *heap)
           break;
         }
       }else{
-        //XBT_INFO("Variable : %s, no location", current_variable->name);
         xbt_strbuff_append(variables, bprintf("%s=undefined\n", current_variable->name));
       }
     }    
  
     ret = unw_step(&c);
-
-    //XBT_INFO(" ");
      
   }
 
-  //free(stack_name);
-
   return variables;
 
 }
@@ -519,3 +576,21 @@ static void print_local_variables_values(xbt_dynar_t all_variables){
   }
 }
 
+
+static void snapshot_stack_free(mc_snapshot_stack_t s){
+  if(s){
+    xbt_free(s->local_variables->data);
+    xbt_free(s->local_variables);
+    xbt_free(s);
+  }
+}
+
+void snapshot_stack_free_voidp(void *s){
+  snapshot_stack_free((mc_snapshot_stack_t) * (void **) s);
+}
+
+void *MC_snapshot(void){
+
+  return simcall_mc_snapshot();
+  
+}