-#define _GNU_SOURCE
-#include "private.h"
+/* 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>
-memory_map_t get_memory_map(void)
-{
- FILE *fp; /* File pointer to process's proc maps file */
- char *line = NULL; /* Temporal storage for each line that is readed */
- ssize_t read; /* Number of bytes readed */
- size_t n = 0; /* Amount of bytes to read by getline */
- memory_map_t ret = NULL; /* The memory map to return */
-
-/* The following variables are used during the parsing of the file "maps" */
- s_map_region memreg; /* temporal map region used for creating the map */
- char *lfields[6], *tok, *endptr;
- int i;
+#include <sys/types.h>
-/* Open the actual process's proc maps file and create the memory_map_t */
-/* to be returned. */
- fp = fopen("/proc/self/maps", "r");
+#include "mc_memory_map.h"
+#include "mc_private.h"
- xbt_assert0(fp,
- "Cannot open /proc/self/maps to investigate the memory map of the process. Please report this bug.");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_memory_map, mc,
+ "Logging specific to algorithms for memory_map");
- ret = xbt_new0(s_memory_map_t, 1);
+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 /proc/self/maps to investigate the memory map of the process. Please report this bug.");
+ 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 */
- while ((read = getline(&line, &n, fp)) != -1) {
+ 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, " ");
}
/* Ok we are good enough to try to get the info we need */
/* First get the start and the end address of the map */
- tok = strtok(lfields[0], "-");
+ 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')
if (strlen(lfields[1]) < 4)
xbt_abort();
- memreg.perms = 0;
-
- for (i = 0; i < 3; i++)
- if (lfields[1][i] != '-')
- memreg.perms |= 1 << i;
+ 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.perms |= MAP_PRIV;
+ memreg.flags |= MAP_PRIVATE;
else if (lfields[1][4] == 's')
- memreg.perms |= MAP_SHARED;
+ memreg.flags |= MAP_SHARED;
/* Get the offset value */
memreg.offset = (void *) strtoul(lfields[2], &endptr, 16);
xbt_realloc(ret->regions, sizeof(memreg) * (ret->mapsize + 1));
memcpy(ret->regions + ret->mapsize, &memreg, sizeof(memreg));
ret->mapsize++;
- }
- if (line)
- free(line);
+ }
+ 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);
+}