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/*
htop - ProcessTable.c
(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 "ProcessTable.h"
#include <assert.h>
#include <stdlib.h>
#include "Hashtable.h"
#include "Row.h"
#include "Settings.h"
#include "Vector.h"
void ProcessTable_init(ProcessTable* this, const ObjectClass* klass, Machine* host, Hashtable* pidMatchList) {
Table_init(&this->super, klass, host);
this->pidMatchList = pidMatchList;
}
void ProcessTable_done(ProcessTable* this) {
Table_done(&this->super);
}
Process* ProcessTable_getProcess(ProcessTable* this, pid_t pid, bool* preExisting, Process_New constructor) {
const Table* table = &this->super;
Process* proc = (Process*) Hashtable_get(table->table, pid);
*preExisting = proc != NULL;
if (proc) {
assert(Vector_indexOf(table->rows, proc, Row_idEqualCompare) != -1);
assert(Process_getPid(proc) == pid);
} else {
proc = constructor(table->host);
assert(proc->cmdline == NULL);
Process_setPid(proc, pid);
}
return proc;
}
static void ProcessTable_prepareEntries(Table* super) {
ProcessTable* this = (ProcessTable*) super;
this->totalTasks = 0;
this->userlandThreads = 0;
this->kernelThreads = 0;
this->runningTasks = 0;
Table_prepareEntries(super);
}
static void ProcessTable_iterateEntries(Table* super) {
ProcessTable* this = (ProcessTable*) super;
// calling into platform-specific code
ProcessTable_goThroughEntries(this);
}
static void ProcessTable_cleanupEntries(Table* super) {
Machine* host = super->host;
const Settings* settings = host->settings;
// Finish process table update, culling any exit'd processes
for (int i = Vector_size(super->rows) - 1; i >= 0; i--) {
Process* p = (Process*) Vector_get(super->rows, i);
// tidy up Process state after refreshing the ProcessTable table
Process_makeCommandStr(p, settings);
// keep track of the highest UID for column scaling
if (p->st_uid > host->maxUserId)
host->maxUserId = p->st_uid;
Table_cleanupRow(super, (Row*) p, i);
}
// compact the table in case of deletions
Table_compact(super);
}
const TableClass ProcessTable_class = {
.super = {
.extends = Class(Table),
.delete = ProcessTable_delete,
},
.prepare = ProcessTable_prepareEntries,
.iterate = ProcessTable_iterateEntries,
.cleanup = ProcessTable_cleanupEntries,
};
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