/*
htop - FreeBSDProcess.c
(C) 2015 Hisham H. Muhammad
Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/

#include "FreeBSDProcess.h"

#include <stdlib.h>

#include "CRT.h"
#include "Macros.h"
#include "Process.h"
#include "RichString.h"
#include "XUtils.h"


const char* const nodevStr = "nodev";

ProcessFieldData Process_fields[] = {
   [0] = { .name = "", .title = NULL, .description = NULL, .flags = 0, },
   [PID] = { .name = "PID", .title = "    PID ", .description = "Process/thread ID", .flags = 0, },
   [COMM] = { .name = "Command", .title = "Command ", .description = "Command line", .flags = 0, },
   [STATE] = { .name = "STATE", .title = "S ", .description = "Process state (S sleeping, R running, D disk, Z zombie, T traced, W paging)", .flags = 0, },
   [PPID] = { .name = "PPID", .title = "   PPID ", .description = "Parent process ID", .flags = 0, },
   [PGRP] = { .name = "PGRP", .title = "   PGRP ", .description = "Process group ID", .flags = 0, },
   [SESSION] = { .name = "SESSION", .title = "    SID ", .description = "Process's session ID", .flags = 0, },
   [TTY_NR] = { .name = "TTY_NR", .title = "    TTY ", .description = "Controlling terminal", .flags = PROCESS_FLAG_FREEBSD_TTY, },
   [TPGID] = { .name = "TPGID", .title = "  TPGID ", .description = "Process ID of the fg process group of the controlling terminal", .flags = 0, },
   [MINFLT] = { .name = "MINFLT", .title = "     MINFLT ", .description = "Number of minor faults which have not required loading a memory page from disk", .flags = 0, },
   [MAJFLT] = { .name = "MAJFLT", .title = "     MAJFLT ", .description = "Number of major faults which have required loading a memory page from disk", .flags = 0, },
   [PRIORITY] = { .name = "PRIORITY", .title = "PRI ", .description = "Kernel's internal priority for the process", .flags = 0, },
   [NICE] = { .name = "NICE", .title = " NI ", .description = "Nice value (the higher the value, the more it lets other processes take priority)", .flags = 0, },
   [STARTTIME] = { .name = "STARTTIME", .title = "START ", .description = "Time the process was started", .flags = 0, },

   [PROCESSOR] = { .name = "PROCESSOR", .title = "CPU ", .description = "Id of the CPU the process last executed on", .flags = 0, },
   [M_VIRT] = { .name = "M_VIRT", .title = " VIRT ", .description = "Total program size in virtual memory", .flags = 0, },
   [M_RESIDENT] = { .name = "M_RESIDENT", .title = "  RES ", .description = "Resident set size, size of the text and data sections, plus stack usage", .flags = 0, },
   [ST_UID] = { .name = "ST_UID", .title = "  UID ", .description = "User ID of the process owner", .flags = 0, },
   [PERCENT_CPU] = { .name = "PERCENT_CPU", .title = "CPU% ", .description = "Percentage of the CPU time the process used in the last sampling", .flags = 0, },
   [PERCENT_NORM_CPU] = { .name = "PERCENT_NORM_CPU", .title = "NCPU%", .description = "Normalized percentage of the CPU time the process used in the last sampling (normalized by cpu count)", .flags = 0, },
   [PERCENT_MEM] = { .name = "PERCENT_MEM", .title = "MEM% ", .description = "Percentage of the memory the process is using, based on resident memory size", .flags = 0, },
   [USER] = { .name = "USER", .title = "USER      ", .description = "Username of the process owner (or user ID if name cannot be determined)", .flags = 0, },
   [TIME] = { .name = "TIME", .title = "  TIME+  ", .description = "Total time the process has spent in user and system time", .flags = 0, },
   [NLWP] = { .name = "NLWP", .title = "NLWP ", .description = "Number of threads in the process", .flags = 0, },
   [TGID] = { .name = "TGID", .title = "   TGID ", .description = "Thread group ID (i.e. process ID)", .flags = 0, },
   [JID] = { .name = "JID", .title = "    JID ", .description = "Jail prison ID", .flags = 0, },
   [JAIL] = { .name = "JAIL", .title = "JAIL        ", .description = "Jail prison name", .flags = 0, },
   [LAST_PROCESSFIELD] = { .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
};

ProcessPidColumn Process_pidColumns[] = {
   { .id = JID, .label = "JID" },
   { .id = PID, .label = "PID" },
   { .id = PPID, .label = "PPID" },
   { .id = TPGID, .label = "TPGID" },
   { .id = TGID, .label = "TGID" },
   { .id = PGRP, .label = "PGRP" },
   { .id = SESSION, .label = "SID" },
   { .id = 0, .label = NULL },
};

Process* FreeBSDProcess_new(const Settings* settings) {
   FreeBSDProcess* this = xCalloc(1, sizeof(FreeBSDProcess));
   Object_setClass(this, Class(FreeBSDProcess));
   Process_init(&this->super, settings);
   return &this->super;
}

void Process_delete(Object* cast) {
   FreeBSDProcess* this = (FreeBSDProcess*) cast;
   Process_done((Process*)cast);
   free(this->jname);
   free(this);
}

static void FreeBSDProcess_writeField(const Process* this, RichString* str, ProcessField field) {
   const FreeBSDProcess* fp = (const FreeBSDProcess*) this;
   char buffer[256]; buffer[255] = '\0';
   int attr = CRT_colors[DEFAULT_COLOR];
   int n = sizeof(buffer) - 1;
   switch ((int) field) {
   // add FreeBSD-specific fields here
   case JID: xSnprintf(buffer, n, Process_pidFormat, fp->jid); break;
   case JAIL: {
      xSnprintf(buffer, n, "%-11s ", fp->jname);
      if (buffer[11] != '\0') {
         buffer[11] = ' ';
         buffer[12] = '\0';
      }
      break;
   }
   case TTY_NR:
      if (fp->ttyPath) {
         if (fp->ttyPath == nodevStr)
            attr = CRT_colors[PROCESS_SHADOW];
         xSnprintf(buffer, n, "%-8s", fp->ttyPath);
      } else {
         attr = CRT_colors[PROCESS_SHADOW];
         xSnprintf(buffer, n, "?        ");
      }
      break;
   default:
      Process_writeField(this, str, field);
      return;
   }
   RichString_append(str, attr, buffer);
}

static long FreeBSDProcess_compare(const void* v1, const void* v2) {
   const FreeBSDProcess *p1, *p2;
   const Settings *settings = ((const Process*)v1)->settings;

   if (settings->direction == 1) {
      p1 = (const FreeBSDProcess*)v1;
      p2 = (const FreeBSDProcess*)v2;
   } else {
      p2 = (const FreeBSDProcess*)v1;
      p1 = (const FreeBSDProcess*)v2;
   }

   switch ((int) settings->sortKey) {
   // add FreeBSD-specific fields here
   case JID:
      return SPACESHIP_NUMBER(p1->jid, p2->jid);
   case JAIL:
      return SPACESHIP_NULLSTR(p1->jname, p2->jname);
   case TTY_NR:
      return SPACESHIP_NULLSTR(p1->ttyPath, p2->ttyPath);
   default:
      return Process_compare(v1, v2);
   }
}

bool Process_isThread(const Process* this) {
   const FreeBSDProcess* fp = (const FreeBSDProcess*) this;

   if (fp->kernel == 1 ) {
      return 1;
   } else {
      return Process_isUserlandThread(this);
   }
}

const ProcessClass FreeBSDProcess_class = {
   .super = {
      .extends = Class(Process),
      .display = Process_display,
      .delete = Process_delete,
      .compare = FreeBSDProcess_compare
   },
   .writeField = FreeBSDProcess_writeField,
};