--- /dev/null
+/* Copyright (c) 2008-2014. The SimGrid Team.
+ * All rights reserved. */
+
+/* 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 <stdlib.h>
+
+#include <sys/types.h>
+
+#include "mc_memory_map.h"
+#include "mc_private.h"
+
+extern "C" {
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_memory_map, mc,
+ "Logging specific to algorithms for memory_map");
+
+memory_map_t MC_get_memory_map(pid_t pid)
+{
+ /* Open the actual process's proc maps file and create the memory_map_t */
+ /* to be returned. */
+ char* path = bprintf("/proc/%i/maps", (int) pid);
+ FILE *fp = fopen(path, "r");
+ free(path);
+ if(fp == NULL)
+ perror("fopen failed");
+ xbt_assert(fp,
+ "Cannot open %s to investigate the memory map of the process.", path);
+ setbuf(fp, NULL);
+
+ memory_map_t ret = xbt_new0(s_memory_map_t, 1);
+
+ /* Read one line at the time, parse it and add it to the memory map to be returned */
+ ssize_t read; /* Number of bytes readed */
+ char* line = NULL;
+ size_t n = 0; /* Amount of bytes to read by xbt_getline */
+ while ((read = xbt_getline(&line, &n, fp)) != -1) {
+
+ //fprintf(stderr,"%s", line);
+
+ /* Wipeout the new line character */
+ line[read - 1] = '\0';
+
+ /* Tokenize the line using spaces as delimiters and store each token */
+ /* in lfields array. We expect 5 tokens/fields */
+ char* lfields[6];
+ lfields[0] = strtok(line, " ");
+
+ int i;
+ for (i = 1; i < 6 && lfields[i - 1] != NULL; i++) {
+ lfields[i] = strtok(NULL, " ");
+ }
+
+ /* Check to see if we got the expected amount of columns */
+ if (i < 6)
+ xbt_abort();
+
+ /* Ok we are good enough to try to get the info we need */
+ /* First get the start and the end address of the map */
+ char *tok = strtok(lfields[0], "-");
+ if (tok == NULL)
+ xbt_abort();
+
+ s_map_region_t memreg; /* temporal map region used for creating the map */
+ char *endptr;
+ memreg.start_addr = (void *) strtoul(tok, &endptr, 16);
+ /* Make sure that the entire string was an hex number */
+ if (*endptr != '\0')
+ xbt_abort();
+
+ tok = strtok(NULL, "-");
+ if (tok == NULL)
+ xbt_abort();
+
+ memreg.end_addr = (void *) strtoul(tok, &endptr, 16);
+ /* Make sure that the entire string was an hex number */
+ if (*endptr != '\0')
+ xbt_abort();
+
+ /* Get the permissions flags */
+ if (strlen(lfields[1]) < 4)
+ xbt_abort();
+
+ memreg.prot = 0;
+
+ for (i = 0; i < 3; i++){
+ switch(lfields[1][i]){
+ case 'r':
+ memreg.prot |= PROT_READ;
+ break;
+ case 'w':
+ memreg.prot |= PROT_WRITE;
+ break;
+ case 'x':
+ memreg.prot |= PROT_EXEC;
+ break;
+ default:
+ break;
+ }
+ }
+ if (memreg.prot == 0)
+ memreg.prot |= PROT_NONE;
+
+ if (lfields[1][4] == 'p')
+ memreg.flags |= MAP_PRIVATE;
+
+ else if (lfields[1][4] == 's')
+ memreg.flags |= MAP_SHARED;
+
+ /* Get the offset value */
+ memreg.offset = (void *) strtoul(lfields[2], &endptr, 16);
+ /* Make sure that the entire string was an hex number */
+ if (*endptr != '\0')
+ xbt_abort();
+
+ /* Get the device major:minor bytes */
+ tok = strtok(lfields[3], ":");
+ if (tok == NULL)
+ xbt_abort();
+
+ memreg.dev_major = (char) strtoul(tok, &endptr, 16);
+ /* Make sure that the entire string was an hex number */
+ if (*endptr != '\0')
+ xbt_abort();
+
+ tok = strtok(NULL, ":");
+ if (tok == NULL)
+ xbt_abort();
+
+ memreg.dev_minor = (char) strtoul(tok, &endptr, 16);
+ /* Make sure that the entire string was an hex number */
+ if (*endptr != '\0')
+ xbt_abort();
+
+ /* Get the inode number and make sure that the entire string was a long int */
+ memreg.inode = strtoul(lfields[4], &endptr, 10);
+ if (*endptr != '\0')
+ xbt_abort();
+
+ /* And finally get the pathname */
+ memreg.pathname = xbt_strdup(lfields[5]);
+
+ /* Create space for a new map region in the region's array and copy the */
+ /* parsed stuff from the temporal memreg variable */
+ XBT_DEBUG("Found region for %s",
+ memreg.pathname ? memreg.pathname : "(null)");
+ ret->regions = (map_region_t)
+ xbt_realloc(ret->regions, sizeof(memreg) * (ret->mapsize + 1));
+ memcpy(ret->regions + ret->mapsize, &memreg, sizeof(memreg));
+ ret->mapsize++;
+
+ }
+
+ free(line);
+ fclose(fp);
+ return ret;
+}
+
+void MC_free_memory_map(memory_map_t map){
+
+ int i;
+ for(i=0; i< map->mapsize; i++){
+ xbt_free(map->regions[i].pathname);
+ }
+ xbt_free(map->regions);
+ xbt_free(map);
+}
+
+}