+++ /dev/null
-/* Copyright (c) 2008-2015. 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 <cstdlib>
-#include <cstdio>
-#include <cstring>
-
-#include <sys/types.h>
-
-#include <xbt/base.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");
-
-}
-
-namespace simgrid {
-namespace mc {
-
-XBT_PRIVATE std::vector<VmMap> 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 = std::fopen(path, "r");
- if(fp == NULL)
- std::perror("fopen failed");
- xbt_assert(fp,
- "Cannot open %s to investigate the memory map of the process.", path);
- free(path);
- setbuf(fp, NULL);
-
- std::vector<VmMap> ret;
-
- /* 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;
- std::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] = std::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 = std::strtok(lfields[0], "-");
- if (tok == NULL)
- xbt_abort();
-
- VmMap memreg;
- char *endptr;
- memreg.start_addr = std::strtoull(tok, &endptr, 16);
- /* Make sure that the entire string was an hex number */
- if (*endptr != '\0')
- xbt_abort();
-
- tok = std::strtok(NULL, "-");
- if (tok == NULL)
- xbt_abort();
-
- memreg.end_addr = std::strtoull(tok, &endptr, 16);
- /* Make sure that the entire string was an hex number */
- if (*endptr != '\0')
- xbt_abort();
-
- /* Get the permissions flags */
- if (std::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 = std::strtoull(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 = std::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 = std::strtok(NULL, ":");
- if (tok == NULL)
- xbt_abort();
-
- memreg.dev_minor = (char) std::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 */
- if (lfields[5])
- memreg.pathname = 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.empty() ? memreg.pathname.c_str() : "(null)");
-
- ret.push_back(std::move(memreg));
- }
-
- std::free(line);
- std::fclose(fp);
- return std::move(ret);
-}
-
-}
-}
