#include <cstring>
#include <sys/types.h>
-#ifdef __linux__
+
+#if defined __APPLE__
+# 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
+# if defined __ppc64__ || defined __x86_64__
+# define mach_vm_region vm_region64
+# else
+# define mach_vm_region vm_region
+# endif
+# endif
+#endif
+
+#if defined __linux__
# include <sys/mman.h>
#endif
+#if defined __FreeBSD__
+# include <sys/types.h>
+# include <sys/mman.h>
+# include <sys/param.h>
+# include <sys/queue.h>
+# include <sys/socket.h>
+# include <sys/sysctl.h>
+# include <sys/user.h>
+# include <libprocstat.h>
+#endif
+
#include <xbt/sysdep.h>
#include <xbt/base.h>
#include <xbt/file.h>
*/
XBT_PRIVATE std::vector<VmMap> get_memory_map(pid_t pid)
{
-#ifdef __linux__
+ std::vector<VmMap> ret;
+#if defined __APPLE__
+ vm_map_t map;
+
+ /* 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");
+ }
+
+ /*
+ * Darwin do not give us the number of mappings, so we read entries until
+ * we get an KERN_INVALID_ADDRESS return.
+ */
+ mach_vm_address_t address = VM_MIN_ADDRESS;
+ while (true) {
+ kern_return_t kr;
+ memory_object_name_t object;
+ mach_vm_size_t size;
+#if defined __ppc64__ || defined __x86_64__
+ vm_region_flavor_t flavor = VM_REGION_BASIC_INFO_64;
+ struct vm_region_basic_info_64 info;
+ mach_msg_type_number_t info_count = VM_REGION_BASIC_INFO_COUNT_64;
+#else
+ vm_region_flavor_t flavor = VM_REGION_BASIC_INFO;
+ struct vm_region_basic_info info;
+ mach_msg_type_number_t info_count = VM_REGION_BASIC_INFO_COUNT;
+#endif
+
+ kr =
+ mach_vm_region(
+ map,
+ &address,
+ &size,
+ flavor,
+ (vm_region_info_t)&info,
+ &info_count,
+ &object);
+ if (kr == KERN_INVALID_ADDRESS) {
+ break;
+ }
+ else if (kr != KERN_SUCCESS) {
+ std::perror("mach_vm_region failed");
+ xbt_die("Cannot request authorization for kernel information access");
+ }
+
+ VmMap memreg;
+
+ /* Addresses */
+ memreg.start_addr = address;
+ memreg.end_addr = address + size - 1;
+
+ /* Permissions */
+ memreg.prot = PROT_NONE;
+ if (info.protection & VM_PROT_READ)
+ memreg.prot |= PROT_READ;
+ if (info.protection & VM_PROT_WRITE)
+ memreg.prot |= PROT_WRITE;
+ if (info.protection & VM_PROT_EXECUTE)
+ memreg.prot |= PROT_EXEC;
+
+ /* Private (copy-on-write) or shared? */
+ if (info.shared)
+ memreg.flags |= MAP_SHARED;
+ else
+ memreg.flags |= MAP_PRIVATE;
+
+ /* Offset */
+ memreg.offset = info.offset;
+
+ /* Device : not sure this can be mapped to something outside of Linux? */
+ memreg.dev_major = 0;
+ memreg.dev_minor = 0;
+
+ /* Inode */
+ 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());
+#endif
+
+ ret.push_back(std::move(memreg));
+ address += size;
+ }
+
+ mach_port_deallocate(mach_task_self(), map);
+#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);
free(path);
setbuf(fp, nullptr);
- 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 = nullptr;
} 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"
+ 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);
}
std::free(line);
std::fclose(fp);
- return ret;
+#elif defined __FreeBSD__
+ struct procstat *prstat;
+ struct kinfo_proc *proc;
+ struct kinfo_vmentry *vmentries;
+ unsigned int cnt;
+
+ if ((prstat = procstat_open_sysctl()) == NULL) {
+ std::perror("procstat_open_sysctl failed");
+ xbt_die("Cannot access kernel state information");
+ }
+ if ((proc = procstat_getprocs(prstat, KERN_PROC_PID, pid, &cnt)) == NULL) {
+ std::perror("procstat_open_sysctl failed");
+ xbt_die("Cannot access process information");
+ }
+ if ((vmentries = procstat_getvmmap(prstat, proc, &cnt)) == NULL) {
+ std::perror("procstat_getvmmap failed");
+ xbt_die("Cannot access process memory mappings");
+ }
+ for (unsigned int i = 0; i < cnt; i++) {
+ VmMap memreg;
+
+ /* Addresses */
+ memreg.start_addr = vmentries[i].kve_start;
+ memreg.end_addr = vmentries[i].kve_end;
+
+ /* Permissions */
+ memreg.prot = PROT_NONE;
+ if (vmentries[i].kve_protection & KVME_PROT_READ)
+ memreg.prot |= PROT_READ;
+ if (vmentries[i].kve_protection & KVME_PROT_WRITE)
+ memreg.prot |= PROT_WRITE;
+ if (vmentries[i].kve_protection & KVME_PROT_EXEC)
+ memreg.prot |= PROT_EXEC;
+
+ /* Private (copy-on-write) or shared? */
+ if (vmentries[i].kve_flags & KVME_FLAG_COW)
+ memreg.flags |= MAP_PRIVATE;
+ else
+ memreg.flags |= MAP_SHARED;
+
+ /* Offset */
+ memreg.offset = vmentries[i].kve_offset;
+
+ /* Device : not sure this can be mapped to something outside of Linux? */
+ memreg.dev_major = 0;
+ memreg.dev_minor = 0;
+
+ /* Inode */
+ memreg.inode = vmentries[i].kve_vn_fileid;
+
+ /*
+ * Path. Linuxize result by giving an anonymous mapping a path from
+ * the previous mapping, provided previous is vnode and has a path,
+ * and mark the stack.
+ */
+ if (vmentries[i].kve_path[0] != '\0')
+ memreg.pathname = vmentries[i].kve_path;
+ else if (vmentries[i].kve_type == KVME_TYPE_DEFAULT
+ && vmentries[i-1].kve_type == KVME_TYPE_VNODE
+ && vmentries[i-1].kve_path[0] != '\0')
+ memreg.pathname = vmentries[i-1].kve_path;
+ else if (vmentries[i].kve_type == KVME_TYPE_DEFAULT
+ && vmentries[i].kve_flags & KVME_FLAG_GROWS_DOWN)
+ memreg.pathname = "[stack]";
+
+ /*
+ * One last dirty modification: remove write permission from shared
+ * libraries private clean pages. This is necessary because simgrid
+ * later identifies mappings based on the permissions that are expected
+ * when running the Linux kernel.
+ */
+ if (vmentries[i].kve_type == KVME_TYPE_VNODE
+ && ! (vmentries[i].kve_flags & KVME_FLAG_NEEDS_COPY))
+ memreg.prot &= ~PROT_WRITE;
+
+ ret.push_back(std::move(memreg));
+ }
+ procstat_freevmmap(prstat, vmentries);
+ procstat_freeprocs(prstat, proc);
+ procstat_close(prstat);
#else
- /* On FreeBSD, kinfo_getvmmap() could be used but mmap() support is disabled anyway. */
xbt_die("Could not get memory map from process %lli", (long long int) pid);
#endif
+ return ret;
}
}
