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

#include "Process.h"
#include "ProcessList.h"
#include "OpenBSDProcess.h"
#include "Platform.h"
#include "CRT.h"

#include <stdlib.h>
#include <unistd.h>
#include <sys/syscall.h>

/*{

typedef enum OpenBSDProcessFields {
   // Add platform-specific fields here, with ids >= 100
   LAST_PROCESSFIELD = 100,
} OpenBSDProcessField;

typedef struct OpenBSDProcess_ {
   Process super;
} OpenBSDProcess;

#ifndef Process_isKernelThread
#define Process_isKernelThread(_process) (_process->pgrp == 0)
#endif

#ifndef Process_isUserlandThread
#define Process_isUserlandThread(_process) (_process->pid != _process->tgid)
#endif

}*/

ProcessClass OpenBSDProcess_class = {
   .super = {
      .extends = Class(Process),
      .display = Process_display,
      .delete = Process_delete,
      .compare = OpenBSDProcess_compare
   },
   .writeField = (Process_WriteField) OpenBSDProcess_writeField,
};

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 = "   SESN ",
      .description = "Process's session ID",
      .flags = 0, },
   [TTY_NR] = {
      .name = "TTY_NR",
      .title = "    TTY ",
      .description = "Controlling terminal",
      .flags = 0, },
   [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_SIZE] = {
      .name = "M_SIZE",
      .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_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, },
   [LAST_PROCESSFIELD] = {
      .name = "*** report bug! ***",
      .title = NULL,
      .description = NULL,
      .flags = 0, },
};

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

OpenBSDProcess* OpenBSDProcess_new(Settings* settings) {
   OpenBSDProcess* this = xCalloc(sizeof(OpenBSDProcess), 1);
   Object_setClass(this, Class(OpenBSDProcess));
   Process_init(&this->super, settings);
   return this;
}

void Process_delete(Object* cast) {
   OpenBSDProcess* this = (OpenBSDProcess*) cast;
   Process_done((Process*)cast);
   free(this);
}

void OpenBSDProcess_writeField(Process* this, RichString* str, ProcessField field) {
   //OpenBSDProcess* fp = (OpenBSDProcess*) this;
   char buffer[256]; buffer[255] = '\0';
   int attr = CRT_colors[DEFAULT_COLOR];
   //int n = sizeof(buffer) - 1;
   switch (field) {
   // add OpenBSD-specific fields here
   default:
      Process_writeField(this, str, field);
      return;
   }
   RichString_append(str, attr, buffer);
}

long OpenBSDProcess_compare(const void* v1, const void* v2) {
   OpenBSDProcess *p1, *p2;
   Settings *settings = ((Process*)v1)->settings;
   if (settings->direction == 1) {
      p1 = (OpenBSDProcess*)v1;
      p2 = (OpenBSDProcess*)v2;
   } else {
      p2 = (OpenBSDProcess*)v1;
      p1 = (OpenBSDProcess*)v2;
   }
   switch (settings->sortKey) {
   // add OpenBSD-specific fields here
   default:
      return Process_compare(v1, v2);
   }
}

bool Process_isThread(Process* this) {
   return (Process_isKernelThread(this));
}
