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/*
htop - Machine.c
(C) 2023 Red Hat, Inc.
(C) 2004,2005 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "Machine.h"
#include <stdlib.h>
#include <unistd.h>
#include "Object.h"
#include "Platform.h"
#include "Row.h"
#include "XUtils.h"
void Machine_init(Machine* this, UsersTable* usersTable, uid_t userId) {
this->usersTable = usersTable;
this->userId = userId;
this->htopUserId = getuid();
// discover fixed column width limits
Row_setPidColumnWidth(Platform_getMaxPid());
// always maintain valid realtime timestamps
Platform_gettime_realtime(&this->realtime, &this->realtimeMs);
#ifdef HAVE_LIBHWLOC
this->topologyOk = false;
if (hwloc_topology_init(&this->topology) == 0) {
this->topologyOk =
#if HWLOC_API_VERSION < 0x00020000
/* try to ignore the top-level machine object type */
0 == hwloc_topology_ignore_type_keep_structure(this->topology, HWLOC_OBJ_MACHINE) &&
/* ignore caches, which don't add structure */
0 == hwloc_topology_ignore_type_keep_structure(this->topology, HWLOC_OBJ_CORE) &&
0 == hwloc_topology_ignore_type_keep_structure(this->topology, HWLOC_OBJ_CACHE) &&
0 == hwloc_topology_set_flags(this->topology, HWLOC_TOPOLOGY_FLAG_WHOLE_SYSTEM) &&
#else
0 == hwloc_topology_set_all_types_filter(this->topology, HWLOC_TYPE_FILTER_KEEP_STRUCTURE) &&
#endif
0 == hwloc_topology_load(this->topology);
}
#endif
}
void Machine_done(Machine* this) {
#ifdef HAVE_LIBHWLOC
if (this->topologyOk) {
hwloc_topology_destroy(this->topology);
}
#endif
Object_delete(this->processTable);
free(this->tables);
}
static void Machine_addTable(Machine* this, Table* table) {
/* check that this table has not been seen previously */
for (size_t i = 0; i < this->tableCount; i++)
if (this->tables[i] == table)
return;
size_t nmemb = this->tableCount + 1;
Table** tables = xReallocArray(this->tables, nmemb, sizeof(Table*));
tables[nmemb - 1] = table;
this->tables = tables;
this->tableCount++;
}
void Machine_populateTablesFromSettings(Machine* this, Settings* settings, Table* processTable) {
this->settings = settings;
this->processTable = processTable;
for (size_t i = 0; i < settings->nScreens; i++) {
ScreenSettings* ss = settings->screens[i];
Table* table = ss->table;
if (!table)
table = ss->table = processTable;
if (i == 0)
this->activeTable = table;
Machine_addTable(this, table);
}
}
void Machine_setTablesPanel(Machine* this, Panel* panel) {
for (size_t i = 0; i < this->tableCount; i++) {
Table_setPanel(this->tables[i], panel);
}
}
void Machine_scanTables(Machine* this) {
// set scan timestamp
static bool firstScanDone = false;
if (firstScanDone) {
this->prevMonotonicMs = this->monotonicMs;
Platform_gettime_monotonic(&this->monotonicMs);
} else {
this->prevMonotonicMs = 0;
this->monotonicMs = 1;
firstScanDone = true;
}
assert(this->monotonicMs > this->prevMonotonicMs);
this->maxUserId = 0;
Row_resetFieldWidths();
for (size_t i = 0; i < this->tableCount; i++) {
Table* table = this->tables[i];
// pre-processing of each row
Table_scanPrepare(table);
// scan values for this table
Table_scanIterate(table);
// post-process after scanning
Table_scanCleanup(table);
}
Row_setUidColumnWidth(this->maxUserId);
}
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