-/* Copyright (c) 2008-2017. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2008-2019. 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 <cstdlib>
#include <cstring>
+#include <fstream>
+#include <iostream>
+#include <string>
#include <sys/types.h>
#if defined __APPLE__
+# include <dlfcn.h>
# include <mach/mach_init.h>
# include <mach/mach_traps.h>
# include <mach/mach_port.h>
# include <mach/mach_vm.h>
# include <sys/mman.h>
# include <sys/param.h>
-# include <libproc.h>
# if __MAC_OS_X_VERSION_MIN_REQUIRED < 1050
# define mach_vm_address_t vm_address_t
# define mach_vm_size_t vm_size_t
# include <libprocstat.h>
#endif
-#include <xbt/sysdep.h>
-#include <xbt/base.h>
-#include <xbt/file.h>
-#include <xbt/log.h>
+#include <cinttypes>
#include "memory_map.hpp"
-extern "C" {
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_memory_map, xbt, "Logging specific to algorithms for memory_map");
-}
-
namespace simgrid {
namespace xbt {
/**
* \todo This function contains many cases that do not allow for a
- * recovery. Currently, xbt_abort() is called but we should
+ * recovery. Currently, abort() is called but we should
* much rather die with the specific reason so that it's easier
* to find out what's going on.
*/
-XBT_PRIVATE std::vector<VmMap> get_memory_map(pid_t pid)
+std::vector<VmMap> get_memory_map(pid_t pid)
{
std::vector<VmMap> ret;
#if defined __APPLE__
/* Request authorization to read mappings */
if (task_for_pid(mach_task_self(), pid, &map) != KERN_SUCCESS) {
std::perror("task_for_pid failed");
- xbt_die("Cannot request authorization for kernel information access");
+ std::fprintf(stderr, "Cannot request authorization for kernel information access\n");
+ abort();
}
/*
}
else if (kr != KERN_SUCCESS) {
std::perror("mach_vm_region failed");
- xbt_die("Cannot request authorization for kernel information access");
+ std::fprintf(stderr, "Cannot request authorization for kernel information access\n");
+ abort();
}
VmMap memreg;
memreg.inode = 0;
/* Path */
- char path[MAXPATHLEN];
- int pathlen;
- pathlen = proc_regionfilename(pid, address, path, sizeof(path));
- path[pathlen] = '\0';
- memreg.pathname = path;
-
-#if 0 /* Display mappings for debug */
- fprintf(stderr,
- "%#014llx - %#014llx | %c%c%c | %s\n",
- memreg.start_addr, memreg.end_addr,
- (memreg.prot & PROT_READ) ? 'r' : '-',
- (memreg.prot & PROT_WRITE) ? 'w' : '-',
- (memreg.prot & PROT_EXEC) ? 'x' : '-',
- memreg.pathname.c_str());
+ Dl_info dlinfo;
+ if (dladdr(reinterpret_cast<void*>(address), &dlinfo))
+ memreg.pathname = dlinfo.dli_fname;
+
+#if 0 /* debug */
+ std::fprintf(stderr, "Region: %016" PRIx64 "-%016" PRIx64 " | %c%c%c | %s\n", memreg.start_addr, memreg.end_addr,
+ (memreg.prot & PROT_READ) ? 'r' : '-', (memreg.prot & PROT_WRITE) ? 'w' : '-',
+ (memreg.prot & PROT_EXEC) ? 'x' : '-', memreg.pathname.c_str());
#endif
ret.push_back(std::move(memreg));
#elif defined __linux__
/* 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 == nullptr) {
- std::perror("fopen failed");
- xbt_die("Cannot open %s to investigate the memory map of the process.", path);
+ std::string path = std::string("/proc/") + std::to_string(pid) + "/maps";
+ std::ifstream fp;
+ fp.rdbuf()->pubsetbuf(0, 0);
+ fp.open(path);
+ if (not fp) {
+ std::perror("open failed");
+ std::fprintf(stderr, "Cannot open %s to investigate the memory map of the process.\n", path.c_str());
+ abort();
}
- free(path);
- setbuf(fp, nullptr);
/* 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 = nullptr;
- std::size_t n = 0; /* Amount of bytes to read by xbt_getline */
- while ((read = xbt_getline(&line, &n, fp)) != -1) {
+ std::string sline;
+ while (std::getline(fp, sline)) {
/**
* The lines that we read have this format: (This is just an example)
* 00602000-00603000 rw-p 00002000 00:28 1837264 <complete-path-to-file>
*/
-
- /* Wipeout the new line character */
- line[read - 1] = '\0';
+ char* line = &sline[0];
/* Tokenize the line using spaces as delimiters and store each token in lfields array. We expect 5 tokens for 6 fields */
char* saveptr = nullptr; // for strtok_r()
}
/* Check to see if we got the expected amount of columns */
- if (i < 6)
- xbt_die("The memory map apparently only supplied less than 6 columns. Recovery impossible.");
+ if (i < 6) {
+ std::fprintf(stderr, "The memory map apparently only supplied less than 6 columns. Recovery impossible.\n");
+ 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_r(lfields[0], "-", &saveptr);
- if (tok == nullptr)
- xbt_die("Start and end address of the map are not concatenated by a hyphen (-). Recovery impossible.");
+ if (tok == nullptr) {
+ std::fprintf(stderr,
+ "Start and end address of the map are not concatenated by a hyphen (-). Recovery impossible.\n");
+ 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();
+ abort();
tok = strtok_r(nullptr, "-", &saveptr);
if (tok == nullptr)
- xbt_abort();
+ abort();
memreg.end_addr = std::strtoull(tok, &endptr, 16);
/* Make sure that the entire string was an hex number */
if (*endptr != '\0')
- xbt_abort();
+ abort();
/* Get the permissions flags */
if (std::strlen(lfields[1]) < 4)
- xbt_abort();
+ abort();
memreg.prot = 0;
for (i = 0; i < 3; i++){
} else {
memreg.flags |= MAP_SHARED;
if (lfields[1][3] != 's')
- XBT_WARN("The protection is neither 'p' (private) nor 's' (shared) but '%s'. Let's assume shared, as on b0rken "
- "win-ubuntu systems.\nFull line: %s\n",
- lfields[1], line);
+ fprintf(stderr,
+ "The protection is neither 'p' (private) nor 's' (shared) but '%s'. Let's assume shared, as on b0rken "
+ "win-ubuntu systems.\nFull line: %s\n",
+ lfields[1], line);
}
/* 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();
+ abort();
/* Get the device major:minor bytes */
tok = strtok_r(lfields[3], ":", &saveptr);
if (tok == nullptr)
- xbt_abort();
+ abort();
memreg.dev_major = (char) strtoul(tok, &endptr, 16);
/* Make sure that the entire string was an hex number */
if (*endptr != '\0')
- xbt_abort();
+ abort();
tok = strtok_r(nullptr, ":", &saveptr);
if (tok == nullptr)
- xbt_abort();
+ 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();
+ 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();
+ abort();
/* And finally get the pathname */
if (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", not memreg.pathname.empty() ? memreg.pathname.c_str() : "(null)");
+ // std::fprintf(stderr, "Found region for %s\n", not memreg.pathname.empty() ? memreg.pathname.c_str() : "(null)");
ret.push_back(std::move(memreg));
}
- std::free(line);
- std::fclose(fp);
+ fp.close();
#elif defined __FreeBSD__
struct procstat *prstat;
struct kinfo_proc *proc;
if ((prstat = procstat_open_sysctl()) == NULL) {
std::perror("procstat_open_sysctl failed");
- xbt_die("Cannot access kernel state information");
+ std::fprintf(stderr, "Cannot access kernel state information\n");
+ abort();
}
if ((proc = procstat_getprocs(prstat, KERN_PROC_PID, pid, &cnt)) == NULL) {
std::perror("procstat_open_sysctl failed");
- xbt_die("Cannot access process information");
+ std::fprintf(stderr, "Cannot access process information\n");
+ abort();
}
if ((vmentries = procstat_getvmmap(prstat, proc, &cnt)) == NULL) {
std::perror("procstat_getvmmap failed");
- xbt_die("Cannot access process memory mappings");
+ std::fprintf(stderr, "Cannot access process memory mappings\n");
+ abort();
}
for (unsigned int i = 0; i < cnt; i++) {
VmMap memreg;
procstat_freeprocs(prstat, proc);
procstat_close(prstat);
#else
- xbt_die("Could not get memory map from process %lli", (long long int) pid);
+ std::fprintf(stderr, "Could not get memory map from process %lli\n", (long long int)pid);
+ abort();
#endif
return ret;
}
