+ char *fields[64];
+ char fields_len;
+
+ int *tasks;
+ int i;
+
+ int ppid;
+ int name_len;
+
+ long long unsigned cpu_user_counter;
+ long long unsigned cpu_system_counter;
+ long long unsigned vmem_rss;
+
+ memset (ps, 0, sizeof (procstat_t));
+
+ snprintf (filename, 64, "/proc/%i/stat", pid);
+ filename[63] = '\0';
+
+ if ((fh = fopen (filename, "r")) == NULL)
+ return (-1);
+
+ if (fgets (buffer, 1024, fh) == NULL)
+ {
+ fclose (fh);
+ return (-1);
+ }
+
+ fclose (fh);
+
+ fields_len = strsplit (buffer, fields, 64);
+ if (fields_len < 24)
+ {
+ DBG ("`%s' has only %i fields..",
+ filename, fields_len);
+ return (-1);
+ }
+ else if (fields_len != 41)
+ {
+ DBG ("WARNING: (fields_len = %i) != 41", fields_len);
+ }
+
+ /* copy the name, strip brackets in the process */
+ name_len = strlen (fields[1]) - 2;
+ if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
+ {
+ DBG ("No brackets found in process name: `%s'", fields[1]);
+ return (-1);
+ }
+ fields[1] = fields[1] + 1;
+ fields[1][name_len] = '\0';
+ strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
+
+ ppid = atoi (fields[3]);
+
+ if ((tasks = ps_read_tasks (pid)) == NULL)
+ {
+ /* This happends for zombied, e.g. */
+ DBG ("ps_read_tasks (%i) failed.", pid);
+ *state = 'Z';
+ ps->num_lwp = 0;
+ ps->num_proc = 0;
+ }
+ else
+ {
+ *state = '\0';
+ ps->num_lwp = 0;
+ ps->num_proc = 1;
+ for (i = 0; tasks[i] != 0; i++)
+ ps->num_lwp++;
+
+ free (tasks);
+ tasks = NULL;
+ }
+
+ /* Leave the rest at zero if this is only an LWP */
+ if (ps->num_proc == 0)
+ {
+ DBG ("This is only an LWP: pid = %i; name = %s;",
+ pid, ps->name);
+ return (0);
+ }
+
+ cpu_user_counter = atoll (fields[13]);
+ cpu_system_counter = atoll (fields[14]);
+ vmem_rss = atoll (fields[23]);
+ ps->vmem_minflt_counter = atol (fields[9]);
+ ps->vmem_majflt_counter = atol (fields[11]);
+
+ /* Convert jiffies to useconds */
+ cpu_user_counter = cpu_user_counter * 1000000 / CONFIG_HZ;
+ cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
+ vmem_rss = vmem_rss * pagesize_g;
+
+ ps->cpu_user_counter = (unsigned long) cpu_user_counter;
+ ps->cpu_system_counter = (unsigned long) cpu_system_counter;
+ ps->vmem_rss = (unsigned long) vmem_rss;
+
+ *state = fields[2][0];
+
+ /* success */
+ return (0);
+} /* int ps_read_process (...) */
+#endif /* KERNEL_LINUX */
+
+static void ps_read (void)
+{
+#if HAVE_THREAD_INFO
+ kern_return_t status;
+
+ int pset;
+ processor_set_t port_pset_priv;
+
+ int task;
+ task_array_t task_list;
+ mach_msg_type_number_t task_list_len;
+
+ int thread;
+ thread_act_array_t thread_list;
+ mach_msg_type_number_t thread_list_len;
+ thread_basic_info_data_t thread_data;
+ mach_msg_type_number_t thread_data_len;
+
+ int running = 0;
+ int sleeping = 0;
+ int zombies = 0;
+ int stopped = 0;
+ int blocked = 0;
+
+ /*
+ * The Mach-concept is a little different from the traditional UNIX
+ * concept: All the work is done in threads. Threads are contained in
+ * `tasks'. Therefore, `task status' doesn't make much sense, since
+ * it's actually a `thread status'.
+ * Tasks are assigned to sets of processors, so that's where you go to
+ * get a list.
+ */
+ for (pset = 0; pset < pset_list_len; pset++)
+ {
+ if ((status = host_processor_set_priv (port_host_self,
+ pset_list[pset],
+ &port_pset_priv)) != KERN_SUCCESS)
+ {
+ syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
+ mach_error_string (status));
+ continue;
+ }
+
+ if ((status = processor_set_tasks (port_pset_priv,
+ &task_list,
+ &task_list_len)) != KERN_SUCCESS)
+ {
+ syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
+ mach_error_string (status));
+ mach_port_deallocate (port_task_self, port_pset_priv);
+ continue;
+ }
+
+ for (task = 0; task < task_list_len; task++)
+ {
+ status = task_threads (task_list[task], &thread_list,
+ &thread_list_len);
+ if (status != KERN_SUCCESS)
+ {
+ /* Apple's `top' treats this case a zombie. It
+ * makes sense to some extend: A `zombie'
+ * thread is nonsense, since the task/process
+ * is dead. */
+ zombies++;
+ DBG ("task_threads failed: %s",
+ mach_error_string (status));
+ if (task_list[task] != port_task_self)
+ mach_port_deallocate (port_task_self,
+ task_list[task]);
+ continue; /* with next task_list */
+ }
+
+ for (thread = 0; thread < thread_list_len; thread++)
+ {
+ thread_data_len = THREAD_BASIC_INFO_COUNT;
+ status = thread_info (thread_list[thread],
+ THREAD_BASIC_INFO,
+ (thread_info_t) &thread_data,
+ &thread_data_len);
+ if (status != KERN_SUCCESS)
+ {
+ syslog (LOG_ERR, "thread_info failed: %s\n",
+ mach_error_string (status));
+ if (task_list[task] != port_task_self)
+ mach_port_deallocate (port_task_self,
+ thread_list[thread]);
+ continue; /* with next thread_list */
+ }
+
+ switch (thread_data.run_state)
+ {
+ case TH_STATE_RUNNING:
+ running++;
+ break;
+ case TH_STATE_STOPPED:
+ /* What exactly is `halted'? */
+ case TH_STATE_HALTED:
+ stopped++;
+ break;
+ case TH_STATE_WAITING:
+ sleeping++;
+ break;
+ case TH_STATE_UNINTERRUPTIBLE:
+ blocked++;
+ break;
+ /* There is no `zombie' case here,
+ * since there are no zombie-threads.
+ * There's only zombie tasks, which are
+ * handled above. */
+ default:
+ syslog (LOG_WARNING,
+ "Unknown thread status: %s",
+ thread_data.run_state);
+ break;
+ } /* switch (thread_data.run_state) */
+
+ if (task_list[task] != port_task_self)
+ {
+ status = mach_port_deallocate (port_task_self,
+ thread_list[thread]);
+ if (status != KERN_SUCCESS)
+ syslog (LOG_ERR, "mach_port_deallocate failed: %s",
+ mach_error_string (status));
+ }
+ } /* for (thread_list) */
+
+ if ((status = vm_deallocate (port_task_self,
+ (vm_address_t) thread_list,
+ thread_list_len * sizeof (thread_act_t)))
+ != KERN_SUCCESS)
+ {
+ syslog (LOG_ERR, "vm_deallocate failed: %s",
+ mach_error_string (status));
+ }
+ thread_list = NULL;
+ thread_list_len = 0;
+
+ /* Only deallocate the task port, if it isn't our own.
+ * Don't know what would happen in that case, but this
+ * is what Apple's top does.. ;) */
+ if (task_list[task] != port_task_self)
+ {
+ status = mach_port_deallocate (port_task_self,
+ task_list[task]);
+ if (status != KERN_SUCCESS)
+ syslog (LOG_ERR, "mach_port_deallocate failed: %s",
+ mach_error_string (status));
+ }
+ } /* for (task_list) */
+
+ if ((status = vm_deallocate (port_task_self,
+ (vm_address_t) task_list,
+ task_list_len * sizeof (task_t))) != KERN_SUCCESS)
+ {
+ syslog (LOG_ERR, "vm_deallocate failed: %s",
+ mach_error_string (status));
+ }
+ task_list = NULL;
+ task_list_len = 0;
+
+ if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
+ != KERN_SUCCESS)
+ {
+ syslog (LOG_ERR, "mach_port_deallocate failed: %s",
+ mach_error_string (status));
+ }
+ } /* for (pset_list) */
+
+ ps_submit (running, sleeping, zombies, stopped, -1, blocked);
+/* #endif HAVE_THREAD_INFO */
+
+#elif KERNEL_LINUX
+ int running = 0;
+ int sleeping = 0;
+ int zombies = 0;
+ int stopped = 0;
+ int paging = 0;
+ int blocked = 0;
+
+ struct dirent *ent;
+ DIR *proc;
+ int pid;
+
+ int status;
+ procstat_t ps;
+ procstat_entry_t pse;
+ char state;
+
+ procstat_t *ps_ptr;
+