Process.c - htop - Rivoreo Source Code Repositories

 /*
 htop - Process.c
 (C) 2004-2006 Hisham H. Muhammad
 Released under the GNU GPL, see the COPYING file
 in the source distribution for its full text.
 */

 #define _GNU_SOURCE
 #include "ProcessList.h"
 #include "Object.h"
 #include "CRT.h"
 #include "String.h"
 #include "Process.h"

 #include "debug.h"

 #include <stdio.h>
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <signal.h>
 #include <string.h>
 #include <stdbool.h>
 #include <pwd.h>

 // This works only with glibc 2.1+. On earlier versions
 // the behavior is similar to have a hardcoded page size.
 #define PAGE_SIZE ( sysconf(_SC_PAGESIZE) / 1024 )

 #define PROCESS_COMM_LEN 300
 #define PROCESS_USER_LEN 10

 /*{

 typedef enum ProcessField_ {
    PID = 1, COMM, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, FLAGS, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME,
    STIME, CUTIME, CSTIME, PRIORITY, NICE, ITREALVALUE, STARTTIME, VSIZE, RSS, RLIM, STARTCODE, ENDCODE,
    STARTSTACK, KSTKESP, KSTKEIP, SIGNAL, BLOCKED, SSIGIGNORE, SIGCATCH, WCHAN, NSWAP, CNSWAP, EXIT_SIGNAL,
    PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM,
    USER, TIME, LAST_PROCESSFIELD
 } ProcessField;

 struct ProcessList_;

 typedef struct Process_ {
    Object super;

    struct ProcessList_ *pl;
    bool updated;

    int pid;
    char* comm;
    int indent;
    char state;
    bool tag;
    int ppid;
    int pgrp;
    int session;
    int tty_nr;
    int tpgid;
    unsigned long int flags;
    unsigned long int minflt;
    unsigned long int cminflt;
    unsigned long int majflt;
    unsigned long int cmajflt;
    unsigned long int utime;
    unsigned long int stime;
    long int cutime;
    long int cstime;
    long int priority;
    long int nice;
    long int itrealvalue;
    unsigned long int starttime;
    unsigned long int vsize;
    long int rss;
    unsigned long int rlim;
    unsigned long int startcode;
    unsigned long int endcode;
    unsigned long int startstack;
    unsigned long int kstkesp;
    unsigned long int kstkeip;
    unsigned long int signal;
    unsigned long int blocked;
    unsigned long int sigignore;
    unsigned long int sigcatch;
    unsigned long int wchan;
    unsigned long int nswap;
    unsigned long int cnswap;
    int exit_signal;
    int processor;
    int m_size;
    int m_resident;
    int m_share;
    int m_trs;
    int m_drs;
    int m_lrs;
    int m_dt;
    uid_t st_uid;
    float percent_cpu;
    float percent_mem;
    char user[PROCESS_USER_LEN + 1];
 } Process;

 extern char* PROCESS_CLASS;

 extern char* Process_fieldNames[];

 }*/

 /* private property */
 char* PROCESS_CLASS = "Process";

 /* private property */
 char *Process_fieldNames[] = { "", "PID", "Command", "STATE", "PPID", "PGRP", "SESSION", "TTY_NR", "TPGID", "FLAGS", "MINFLT", "CMINFLT", "MAJFLT", "CMAJFLT", "UTIME", "STIME", "CUTIME", "CSTIME", "PRIORITY", "NICE", "ITREALVALUE", "STARTTIME", "VSIZE", "RSS", "RLIM", "STARTCODE", "ENDCODE", "STARTSTACK", "KSTKESP", "KSTKEIP", "SIGNAL", "BLOCKED", "SIGIGNORE", "SIGCATCH", "WCHAN", "NSWAP", "CNSWAP", "EXIT_SIGNAL",  "PROCESSOR", "M_SIZE", "M_RESIDENT", "M_SHARE", "M_TRS", "M_DRS", "M_LRS", "M_DT", "ST_UID", "PERCENT_CPU", "PERCENT_MEM", "USER", "TIME", "*** report bug! ***"};

 Process* Process_new(struct ProcessList_ *pl) {
    Process* this = malloc(sizeof(Process));
    ((Object*)this)->class = PROCESS_CLASS;
    ((Object*)this)->display = Process_display;
    ((Object*)this)->compare = Process_compare;
    ((Object*)this)->delete = Process_delete;
    this->pl = pl;
    this->tag = false;
    this->updated = false;
    this->utime = 0;
    this->stime = 0;
    this->comm = NULL;
    return this;
 }

 Process* Process_clone(Process* this) {
    Process* clone = malloc(sizeof(Process));
    memcpy(clone, this, sizeof(Process));
    return clone;
 }

 void Process_delete(Object* cast) {
    Process* this = (Process*) cast;
    if (this->comm) free(this->comm);
    assert (this != NULL);
    free(this);
 }

 void Process_display(Object* cast, RichString* out) {
    Process* this = (Process*) cast;
    ProcessField* fields = this->pl->fields;
    RichString_prune(out);
    for (int i = 0; fields[i]; i++)
       Process_writeField(this, out, fields[i]);
    if (this->pl->shadowOtherUsers && this->st_uid != getuid())
       RichString_setAttr(out, CRT_colors[PROCESS_SHADOW]);
    if (this->tag == true)
       RichString_setAttr(out, CRT_colors[PROCESS_TAG]);
    assert(out->len > 0);
 }

 void Process_toggleTag(Process* this) {
    this->tag = this->tag == true ? false : true;
 }

 void Process_setPriority(Process* this, int priority) {
    int old_prio = getpriority(PRIO_PROCESS, this->pid);
    int err = setpriority(PRIO_PROCESS, this->pid, priority);
    if (err == 0 && old_prio != getpriority(PRIO_PROCESS, this->pid)) {
       this->nice = priority;
    }
 }

 void Process_sendSignal(Process* this, int signal) {
    kill(this->pid, signal);
 }

 #define ONE_K 1024
 #define ONE_M (ONE_K * ONE_K)
 #define ONE_G (ONE_M * ONE_K)

 /* private */
 void Process_printLargeNumber(Process* this, RichString *str, unsigned int number) {
    char buffer[11];
    int len;
    if(number >= (1000 * ONE_M)) {
       len = snprintf(buffer, 10, "%4.2fG ", (float)number / ONE_M);
       RichString_appendn(str, CRT_colors[LARGE_NUMBER], buffer, len);
    } else if(number >= (100000)) {
       len = snprintf(buffer, 10, "%4dM ", number / ONE_K);
       int attr = this->pl->highlightMegabytes
                ? CRT_colors[PROCESS_MEGABYTES]
                : CRT_colors[PROCESS];
       RichString_appendn(str, attr, buffer, len);
    } else if (this->pl->highlightMegabytes && number >= 1000) {
       len = snprintf(buffer, 10, "%2d", number/1000);
       RichString_appendn(str, CRT_colors[PROCESS_MEGABYTES], buffer, len);
       number %= 1000;
       len = snprintf(buffer, 10, "%03d ", number);
       RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
    } else {
       len = snprintf(buffer, 10, "%5d ", number);
       RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
    }
 }

 /* private property */
 double jiffy = 0.0;

 /* private */
 static void Process_printTime(RichString* str, unsigned long t) {
    if(jiffy == 0.0) jiffy = sysconf(_SC_CLK_TCK);
    double jiffytime = 1.0 / jiffy;

    double realTime = t * jiffytime;
    int iRealTime = (int) realTime;

    int hours = iRealTime / 3600;
    int minutes = (iRealTime / 60) % 60;
    int seconds = iRealTime % 60;
    int hundredths = (realTime - iRealTime) * 100;
    char buffer[11];
    if (hours) {
       snprintf(buffer, 10, "%2dh", hours);
       RichString_append(str, CRT_colors[LARGE_NUMBER], buffer);
       snprintf(buffer, 10, "%02d:%02d ", minutes, seconds);
    } else {
       snprintf(buffer, 10, "%2d:%02d.%02d ", minutes, seconds, hundredths);
    }
    RichString_append(str, CRT_colors[DEFAULT_COLOR], buffer);
 }

 /* private */
 inline static void Process_writeCommand(Process* this, int attr, RichString* str) {
    if (this->pl->highlightBaseName) {
       char* firstSpace = strchr(this->comm, ' ');
       if (firstSpace) {
          char* slash = firstSpace;
          while (slash > this->comm && *slash != '/')
             slash--;
          if (slash > this->comm) {
             slash++;
             RichString_appendn(str, attr, this->comm, slash - this->comm);
          }
          RichString_appendn(str, CRT_colors[PROCESS_BASENAME], slash, firstSpace - slash);
          RichString_append(str, attr, firstSpace);
       } else {
          RichString_append(str, CRT_colors[PROCESS_BASENAME], this->comm);
       }
    } else {
       RichString_append(str, attr, this->comm);
    }
 }

 void Process_writeField(Process* this, RichString* str, ProcessField field) {
    char buffer[PROCESS_COMM_LEN];
    int attr = CRT_colors[DEFAULT_COLOR];
    int n = PROCESS_COMM_LEN;

    switch (field) {
    case PID: snprintf(buffer, n, "%5d ", this->pid); break;
    case PPID: snprintf(buffer, n, "%5d ", this->ppid); break;
    case PGRP: snprintf(buffer, n, "%5d ", this->pgrp); break;
    case SESSION: snprintf(buffer, n, "%5d ", this->session); break;
    case TTY_NR: snprintf(buffer, n, "%5d ", this->tty_nr); break;
    case TPGID: snprintf(buffer, n, "%5d ", this->tpgid); break;
    case PROCESSOR: snprintf(buffer, n, "%3d ", this->processor+1); break;
    case COMM: {
       if (!this->pl->treeView || this->indent == 0) {
          Process_writeCommand(this, attr, str);
          return;
       } else {
          char* buf = buffer;
          int maxIndent = 0;
          for (int i = 0; i < 32; i++)
             if (this->indent & (1 << i))
                maxIndent = i+1;
 	 for (int i = 0; i < maxIndent - 1; i++) {
             if (this->indent & (1 << i))
                snprintf(buf, n, " |  ");
             else
                snprintf(buf, n, "    ");
             buf += 4;
             n -= 4;
 	 }
          if (this->pl->direction == 1)
             snprintf(buf, n, " `- ");
          else
             snprintf(buf, n, " ,- ");
          RichString_append(str, CRT_colors[PROCESS_TREE], buffer);
          Process_writeCommand(this, attr, str);
 	 return;
       }
    }
    case STATE: {
       snprintf(buffer, n, "%c ", this->state);
       attr = this->state == 'R'
            ? CRT_colors[PROCESS_R_STATE]
            : attr;
       break;
    }
    case PRIORITY: {
       if(this->priority == -100)
          snprintf(buffer, n, " RT ");
       else
          snprintf(buffer, n, "%3ld ", this->priority);
       break;
    }
    case NICE: {
       snprintf(buffer, n, "%3ld ", this->nice);
       attr = this->nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY]
            : this->nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY]
            : attr;
       break;
    }
    case M_SIZE: Process_printLargeNumber(this, str, this->m_size * PAGE_SIZE); return;
    case M_RESIDENT: Process_printLargeNumber(this, str, this->m_resident * PAGE_SIZE); return;
    case M_SHARE: Process_printLargeNumber(this, str, this->m_share * PAGE_SIZE); return;
    case ST_UID: snprintf(buffer, n, "%4d ", this->st_uid); break;
    case USER: {
       if (getuid() != this->st_uid)
          attr = CRT_colors[PROCESS_SHADOW];
       snprintf(buffer, n, "%-8s ", this->user);
       if (buffer[8] != '\0') {
          buffer[8] = ' ';
          buffer[9] = '\0';
       }
       break;
    }
    case UTIME: Process_printTime(str, this->utime); return;
    case STIME: Process_printTime(str, this->stime); return;
    case CUTIME: Process_printTime(str, this->cutime); return;
    case CSTIME: Process_printTime(str, this->cstime); return;
    case TIME: Process_printTime(str, this->utime + this->stime); return;
    case PERCENT_CPU: {
       if (this->percent_cpu > 99.9) {
          snprintf(buffer, n, "100. ");
       } else {
          snprintf(buffer, n, "%4.1f ", this->percent_cpu);
       }
       break;
    }
    case PERCENT_MEM: {
       if (this->percent_mem > 99.9) {
          snprintf(buffer, n, "100. ");
       } else {
          snprintf(buffer, n, "%4.1f ", this->percent_mem);
       }
       break;
    }
    default:
       snprintf(buffer, n, "- ");
    }
    RichString_append(str, attr, buffer);
    return;
 }

 int Process_compare(const Object* v1, const Object* v2) {
    Process* p1 = (Process*)v1;
    Process* p2 = (Process*)v2;
    int direction = p1->pl->direction;
    switch (p1->pl->sortKey) {
    case PID:
       return (p2->pid - p1->pid) * direction;
    case PPID:
       return (p2->ppid - p1->ppid) * direction;
    case USER:
       return strcmp(p2->user, p1->user) * direction;
    case PRIORITY:
       return (p2->priority - p1->priority) * direction;
    case STATE:
       return (p2->state - p1->state) * direction;
    case NICE:
       return (p2->nice - p1->nice) * direction;
    case M_SIZE:
       return (p1->m_size - p2->m_size) * direction;
    case M_RESIDENT:
       return (p1->m_resident - p2->m_resident) * direction;
    case M_SHARE:
       return (p1->m_share - p2->m_share) * direction;
    case PERCENT_CPU:
       return (p1->percent_cpu < p2->percent_cpu ? -1 : 1) * direction;
    case PERCENT_MEM:
       return (p1->percent_mem < p2->percent_mem ? -1 : 1) * direction;
    case UTIME:
       return (p1->utime - p2->utime) * direction;
    case STIME:
       return (p1->stime - p2->stime) * direction;
    case TIME:
       return ((p1->utime+p1->stime) - (p2->utime+p2->stime)) * direction;
    case COMM:
       return strcmp(p2->comm, p1->comm) * direction;
    default:
       return (p2->pid - p1->pid) * direction;
    }
 }

 char* Process_printField(ProcessField field) {
    switch (field) {
    case PID: return "  PID ";
    case PPID: return " PPID ";
    case PGRP: return " PGRP ";
    case SESSION: return " SESN ";
    case TTY_NR: return "  TTY ";
    case TPGID: return " TGID ";
    case COMM: return "Command ";
    case STATE: return "S ";
    case PRIORITY: return "PRI ";
    case NICE: return " NI ";
    case M_SIZE: return " VIRT ";
    case M_RESIDENT: return "  RES ";
    case M_SHARE: return "  SHR ";
    case ST_UID: return " UID ";
    case USER: return "USER     ";
    case UTIME: return " UTIME+  ";
    case STIME: return " STIME+  ";
    case TIME: return "  TIME+  ";
    case PERCENT_CPU: return "CPU% ";
    case PERCENT_MEM: return "MEM% ";
    case PROCESSOR: return "CPU ";
    default: return "- ";
    }
 }
	/*
	htop - Process.c
	(C) 2004-2006 Hisham H. Muhammad
	Released under the GNU GPL, see the COPYING file
	in the source distribution for its full text.
	*/

	#define _GNU_SOURCE
	#include "ProcessList.h"
	#include "Object.h"
	#include "CRT.h"
	#include "String.h"
	#include "Process.h"

	#include "debug.h"

	#include <stdio.h>
	#include <sys/time.h>
	#include <sys/resource.h>
	#include <sys/param.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <signal.h>
	#include <string.h>
	#include <stdbool.h>
	#include <pwd.h>

	// This works only with glibc 2.1+. On earlier versions
	// the behavior is similar to have a hardcoded page size.
	#define PAGE_SIZE ( sysconf(_SC_PAGESIZE) / 1024 )

	#define PROCESS_COMM_LEN 300
	#define PROCESS_USER_LEN 10

	/*{

	typedef enum ProcessField_ {
	PID = 1, COMM, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, FLAGS, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME,
	STIME, CUTIME, CSTIME, PRIORITY, NICE, ITREALVALUE, STARTTIME, VSIZE, RSS, RLIM, STARTCODE, ENDCODE,
	STARTSTACK, KSTKESP, KSTKEIP, SIGNAL, BLOCKED, SSIGIGNORE, SIGCATCH, WCHAN, NSWAP, CNSWAP, EXIT_SIGNAL,
	PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM,
	USER, TIME, LAST_PROCESSFIELD
	} ProcessField;

	struct ProcessList_;

	typedef struct Process_ {
	Object super;

	struct ProcessList_ *pl;
	bool updated;

	int pid;
	char* comm;
	int indent;
	char state;
	bool tag;
	int ppid;
	int pgrp;
	int session;
	int tty_nr;
	int tpgid;
	unsigned long int flags;
	unsigned long int minflt;
	unsigned long int cminflt;
	unsigned long int majflt;
	unsigned long int cmajflt;
	unsigned long int utime;
	unsigned long int stime;
	long int cutime;
	long int cstime;
	long int priority;
	long int nice;
	long int itrealvalue;
	unsigned long int starttime;
	unsigned long int vsize;
	long int rss;
	unsigned long int rlim;
	unsigned long int startcode;
	unsigned long int endcode;
	unsigned long int startstack;
	unsigned long int kstkesp;
	unsigned long int kstkeip;
	unsigned long int signal;
	unsigned long int blocked;
	unsigned long int sigignore;
	unsigned long int sigcatch;
	unsigned long int wchan;
	unsigned long int nswap;
	unsigned long int cnswap;
	int exit_signal;
	int processor;
	int m_size;
	int m_resident;
	int m_share;
	int m_trs;
	int m_drs;
	int m_lrs;
	int m_dt;
	uid_t st_uid;
	float percent_cpu;
	float percent_mem;
	char user[PROCESS_USER_LEN + 1];
	} Process;

	extern char* PROCESS_CLASS;

	extern char* Process_fieldNames[];

	}*/

	/* private property */
	char* PROCESS_CLASS = "Process";

	/* private property */
	char Process_fieldNames[] = { "", "PID", "Command", "STATE", "PPID", "PGRP", "SESSION", "TTY_NR", "TPGID", "FLAGS", "MINFLT", "CMINFLT", "MAJFLT", "CMAJFLT", "UTIME", "STIME", "CUTIME", "CSTIME", "PRIORITY", "NICE", "ITREALVALUE", "STARTTIME", "VSIZE", "RSS", "RLIM", "STARTCODE", "ENDCODE", "STARTSTACK", "KSTKESP", "KSTKEIP", "SIGNAL", "BLOCKED", "SIGIGNORE", "SIGCATCH", "WCHAN", "NSWAP", "CNSWAP", "EXIT_SIGNAL", "PROCESSOR", "M_SIZE", "M_RESIDENT", "M_SHARE", "M_TRS", "M_DRS", "M_LRS", "M_DT", "ST_UID", "PERCENT_CPU", "PERCENT_MEM", "USER", "TIME", " report bug! *"};

	Process* Process_new(struct ProcessList_ *pl) {
	Process* this = malloc(sizeof(Process));
	((Object*)this)->class = PROCESS_CLASS;
	((Object*)this)->display = Process_display;
	((Object*)this)->compare = Process_compare;
	((Object*)this)->delete = Process_delete;
	this->pl = pl;
	this->tag = false;
	this->updated = false;
	this->utime = 0;
	this->stime = 0;
	this->comm = NULL;
	return this;
	}

	Process* Process_clone(Process* this) {
	Process* clone = malloc(sizeof(Process));
	memcpy(clone, this, sizeof(Process));
	return clone;
	}

	void Process_delete(Object* cast) {
	Process* this = (Process*) cast;
	if (this->comm) free(this->comm);
	assert (this != NULL);
	free(this);
	}

	void Process_display(Object* cast, RichString* out) {
	Process* this = (Process*) cast;
	ProcessField* fields = this->pl->fields;
	RichString_prune(out);
	for (int i = 0; fields[i]; i++)
	Process_writeField(this, out, fields[i]);
	if (this->pl->shadowOtherUsers && this->st_uid != getuid())
	RichString_setAttr(out, CRT_colors[PROCESS_SHADOW]);
	if (this->tag == true)
	RichString_setAttr(out, CRT_colors[PROCESS_TAG]);
	assert(out->len > 0);
	}

	void Process_toggleTag(Process* this) {
	this->tag = this->tag == true ? false : true;
	}

	void Process_setPriority(Process* this, int priority) {
	int old_prio = getpriority(PRIO_PROCESS, this->pid);
	int err = setpriority(PRIO_PROCESS, this->pid, priority);
	if (err == 0 && old_prio != getpriority(PRIO_PROCESS, this->pid)) {
	this->nice = priority;
	}
	}

	void Process_sendSignal(Process* this, int signal) {
	kill(this->pid, signal);
	}

	#define ONE_K 1024
	#define ONE_M (ONE_K * ONE_K)
	#define ONE_G (ONE_M * ONE_K)

	/* private */
	void Process_printLargeNumber(Process* this, RichString *str, unsigned int number) {
	char buffer[11];
	int len;
	if(number >= (1000 * ONE_M)) {
	len = snprintf(buffer, 10, "%4.2fG ", (float)number / ONE_M);
	RichString_appendn(str, CRT_colors[LARGE_NUMBER], buffer, len);
	} else if(number >= (100000)) {
	len = snprintf(buffer, 10, "%4dM ", number / ONE_K);
	int attr = this->pl->highlightMegabytes
	? CRT_colors[PROCESS_MEGABYTES]
	: CRT_colors[PROCESS];
	RichString_appendn(str, attr, buffer, len);
	} else if (this->pl->highlightMegabytes && number >= 1000) {
	len = snprintf(buffer, 10, "%2d", number/1000);
	RichString_appendn(str, CRT_colors[PROCESS_MEGABYTES], buffer, len);
	number %= 1000;
	len = snprintf(buffer, 10, "%03d ", number);
	RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
	} else {
	len = snprintf(buffer, 10, "%5d ", number);
	RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
	}
	}

	/* private property */
	double jiffy = 0.0;

	/* private */
	static void Process_printTime(RichString* str, unsigned long t) {
	if(jiffy == 0.0) jiffy = sysconf(_SC_CLK_TCK);
	double jiffytime = 1.0 / jiffy;

	double realTime = t * jiffytime;
	int iRealTime = (int) realTime;

	int hours = iRealTime / 3600;
	int minutes = (iRealTime / 60) % 60;
	int seconds = iRealTime % 60;
	int hundredths = (realTime - iRealTime) * 100;
	char buffer[11];
	if (hours) {
	snprintf(buffer, 10, "%2dh", hours);
	RichString_append(str, CRT_colors[LARGE_NUMBER], buffer);
	snprintf(buffer, 10, "%02d:%02d ", minutes, seconds);
	} else {
	snprintf(buffer, 10, "%2d:%02d.%02d ", minutes, seconds, hundredths);
	}
	RichString_append(str, CRT_colors[DEFAULT_COLOR], buffer);
	}

	/* private */
	inline static void Process_writeCommand(Process* this, int attr, RichString* str) {
	if (this->pl->highlightBaseName) {
	char* firstSpace = strchr(this->comm, ' ');
	if (firstSpace) {
	char* slash = firstSpace;
	while (slash > this->comm && *slash != '/')
	slash--;
	if (slash > this->comm) {
	slash++;
	RichString_appendn(str, attr, this->comm, slash - this->comm);
	}
	RichString_appendn(str, CRT_colors[PROCESS_BASENAME], slash, firstSpace - slash);
	RichString_append(str, attr, firstSpace);
	} else {
	RichString_append(str, CRT_colors[PROCESS_BASENAME], this->comm);
	}
	} else {
	RichString_append(str, attr, this->comm);
	}
	}

	void Process_writeField(Process* this, RichString* str, ProcessField field) {
	char buffer[PROCESS_COMM_LEN];
	int attr = CRT_colors[DEFAULT_COLOR];
	int n = PROCESS_COMM_LEN;

	switch (field) {
	case PID: snprintf(buffer, n, "%5d ", this->pid); break;
	case PPID: snprintf(buffer, n, "%5d ", this->ppid); break;
	case PGRP: snprintf(buffer, n, "%5d ", this->pgrp); break;
	case SESSION: snprintf(buffer, n, "%5d ", this->session); break;
	case TTY_NR: snprintf(buffer, n, "%5d ", this->tty_nr); break;
	case TPGID: snprintf(buffer, n, "%5d ", this->tpgid); break;
	case PROCESSOR: snprintf(buffer, n, "%3d ", this->processor+1); break;
	case COMM: {
	if (!this->pl->treeView \|\| this->indent == 0) {
	Process_writeCommand(this, attr, str);
	return;
	} else {
	char* buf = buffer;
	int maxIndent = 0;
	for (int i = 0; i < 32; i++)
	if (this->indent & (1 << i))
	maxIndent = i+1;
	for (int i = 0; i < maxIndent - 1; i++) {
	if (this->indent & (1 << i))
	snprintf(buf, n, " \| ");
	else
	snprintf(buf, n, " ");
	buf += 4;
	n -= 4;
	}
	if (this->pl->direction == 1)
	snprintf(buf, n, " `- ");
	else
	snprintf(buf, n, " ,- ");
	RichString_append(str, CRT_colors[PROCESS_TREE], buffer);
	Process_writeCommand(this, attr, str);
	return;
	}
	}
	case STATE: {
	snprintf(buffer, n, "%c ", this->state);
	attr = this->state == 'R'
	? CRT_colors[PROCESS_R_STATE]
	: attr;
	break;
	}
	case PRIORITY: {
	if(this->priority == -100)
	snprintf(buffer, n, " RT ");
	else
	snprintf(buffer, n, "%3ld ", this->priority);
	break;
	}
	case NICE: {
	snprintf(buffer, n, "%3ld ", this->nice);
	attr = this->nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY]
	: this->nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY]
	: attr;
	break;
	}
	case M_SIZE: Process_printLargeNumber(this, str, this->m_size * PAGE_SIZE); return;
	case M_RESIDENT: Process_printLargeNumber(this, str, this->m_resident * PAGE_SIZE); return;
	case M_SHARE: Process_printLargeNumber(this, str, this->m_share * PAGE_SIZE); return;
	case ST_UID: snprintf(buffer, n, "%4d ", this->st_uid); break;
	case USER: {
	if (getuid() != this->st_uid)
	attr = CRT_colors[PROCESS_SHADOW];
	snprintf(buffer, n, "%-8s ", this->user);
	if (buffer[8] != '\0') {
	buffer[8] = ' ';
	buffer[9] = '\0';
	}
	break;
	}
	case UTIME: Process_printTime(str, this->utime); return;
	case STIME: Process_printTime(str, this->stime); return;
	case CUTIME: Process_printTime(str, this->cutime); return;
	case CSTIME: Process_printTime(str, this->cstime); return;
	case TIME: Process_printTime(str, this->utime + this->stime); return;
	case PERCENT_CPU: {
	if (this->percent_cpu > 99.9) {
	snprintf(buffer, n, "100. ");
	} else {
	snprintf(buffer, n, "%4.1f ", this->percent_cpu);
	}
	break;
	}
	case PERCENT_MEM: {
	if (this->percent_mem > 99.9) {
	snprintf(buffer, n, "100. ");
	} else {
	snprintf(buffer, n, "%4.1f ", this->percent_mem);
	}
	break;
	}
	default:
	snprintf(buffer, n, "- ");
	}
	RichString_append(str, attr, buffer);
	return;
	}

	int Process_compare(const Object* v1, const Object* v2) {
	Process* p1 = (Process*)v1;
	Process* p2 = (Process*)v2;
	int direction = p1->pl->direction;
	switch (p1->pl->sortKey) {
	case PID:
	return (p2->pid - p1->pid) * direction;
	case PPID:
	return (p2->ppid - p1->ppid) * direction;
	case USER:
	return strcmp(p2->user, p1->user) * direction;
	case PRIORITY:
	return (p2->priority - p1->priority) * direction;
	case STATE:
	return (p2->state - p1->state) * direction;
	case NICE:
	return (p2->nice - p1->nice) * direction;
	case M_SIZE:
	return (p1->m_size - p2->m_size) * direction;
	case M_RESIDENT:
	return (p1->m_resident - p2->m_resident) * direction;
	case M_SHARE:
	return (p1->m_share - p2->m_share) * direction;
	case PERCENT_CPU:
	return (p1->percent_cpu < p2->percent_cpu ? -1 : 1) * direction;
	case PERCENT_MEM:
	return (p1->percent_mem < p2->percent_mem ? -1 : 1) * direction;
	case UTIME:
	return (p1->utime - p2->utime) * direction;
	case STIME:
	return (p1->stime - p2->stime) * direction;
	case TIME:
	return ((p1->utime+p1->stime) - (p2->utime+p2->stime)) * direction;
	case COMM:
	return strcmp(p2->comm, p1->comm) * direction;
	default:
	return (p2->pid - p1->pid) * direction;
	}
	}

	char* Process_printField(ProcessField field) {
	switch (field) {
	case PID: return " PID ";
	case PPID: return " PPID ";
	case PGRP: return " PGRP ";
	case SESSION: return " SESN ";
	case TTY_NR: return " TTY ";
	case TPGID: return " TGID ";
	case COMM: return "Command ";
	case STATE: return "S ";
	case PRIORITY: return "PRI ";
	case NICE: return " NI ";
	case M_SIZE: return " VIRT ";
	case M_RESIDENT: return " RES ";
	case M_SHARE: return " SHR ";
	case ST_UID: return " UID ";
	case USER: return "USER ";
	case UTIME: return " UTIME+ ";
	case STIME: return " STIME+ ";
	case TIME: return " TIME+ ";
	case PERCENT_CPU: return "CPU% ";
	case PERCENT_MEM: return "MEM% ";
	case PROCESSOR: return "CPU ";
	default: return "- ";
	}
	}