Move more Linux-specific code into Linux subdir.

13 files changed, 224 insertions, 199 deletions

diff --git a/Action.c b/Action.c
index f968fc4a..d4c7678f 100644
--- a/Action.c
+++ b/Action.c
@@ -19,6 +19,7 @@ in the source distribution for its full text.
 #include "SignalsPanel.h"
 #include "String.h"
 #include "TraceScreen.h"
+#include "Platform.h"
 
 #include <ctype.h>
 #include <math.h>
diff --git a/AvailableColumnsPanel.c b/AvailableColumnsPanel.c
index c0c1f2dd..44ed7899 100644
--- a/AvailableColumnsPanel.c
+++ b/AvailableColumnsPanel.c
@@ -6,6 +6,7 @@ in the source distribution for its full text.
 */
 
 #include "AvailableColumnsPanel.h"
+#include "Platform.h"
 
 #include "Header.h"
 #include "ColumnsPanel.h"
diff --git a/ColumnsPanel.c b/ColumnsPanel.c
index 6a2dc084..d249312e 100644
--- a/ColumnsPanel.c
+++ b/ColumnsPanel.c
@@ -6,6 +6,7 @@ in the source distribution for its full text.
 */
 
 #include "ColumnsPanel.h"
+#include "Platform.h"
 
 #include "String.h"
 #include "ListItem.h"
diff --git a/Process.c b/Process.c
index 2ca7a147..23ca4652 100644
--- a/Process.c
+++ b/Process.c
@@ -39,11 +39,7 @@ in the source distribution for its full text.
 
 #include <sys/types.h>
 
-#define PROCESS_FLAG_IO 1
-#define PROCESS_FLAG_IOPRIO 2
-#define PROCESS_FLAG_OPENVZ 4
-#define PROCESS_FLAG_VSERVER 8
-#define PROCESS_FLAG_CGROUP 16
+#define PROCESS_FLAG_IO 0x0001
 
 #ifndef Process_isKernelThread
 #define Process_isKernelThread(_process) (_process->pgrp == 0)
@@ -57,30 +53,7 @@ in the source distribution for its full text.
 #define Process_isThread(_process) (Process_isUserlandThread(_process) || Process_isKernelThread(_process))
 #endif
 
-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, NLWP, TGID,
-   #ifdef HAVE_OPENVZ
-   CTID, VPID,
-   #endif
-   #ifdef HAVE_VSERVER
-   VXID,
-   #endif
-   #ifdef HAVE_TASKSTATS
-   RCHAR, WCHAR, SYSCR, SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE, IO_RATE,
-   #endif
-   #ifdef HAVE_CGROUP
-   CGROUP,
-   #endif
-   #ifdef HAVE_OOM
-   OOM,
-   #endif
-   IO_PRIORITY,
-   LAST_PROCESSFIELD
-} ProcessField;
+typedef int ProcessField;
 
 typedef struct Process_ {
    Object super;
@@ -90,6 +63,10 @@ typedef struct Process_ {
    pid_t pid;
    char* comm;
    int indent;
+
+   int basenameOffset;
+   bool updated;
+
    char state;
    bool tag;
    bool showChildren;
@@ -156,8 +133,6 @@ typedef struct Process_ {
    #endif
 
    int exit_signal;
-   int basenameOffset;
-   bool updated;
 
    unsigned long int minflt;
    unsigned long int cminflt;
@@ -196,130 +171,8 @@ long Process_compare(const void* v1, const void* v2);
 
 }*/
 
-ProcessFieldData Process_fields[] = {
-   { .name = "", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "PID", .title = "    PID ", .description = "Process/thread ID", .flags = 0, },
-   { .name = "Command", .title = "Command ", .description = "Command line", .flags = 0, },
-   { .name = "STATE", .title = "S ", .description = "Process state (S sleeping, R running, D disk, Z zombie, T traced, W paging)", .flags = 0, },
-   { .name = "PPID", .title = "   PPID ", .description = "Parent process ID", .flags = 0, },
-   { .name = "PGRP", .title = "   PGRP ", .description = "Process group ID", .flags = 0, },
-   { .name = "SESSION", .title = "   SESN ", .description = "Process's session ID", .flags = 0, },
-   { .name = "TTY_NR", .title = "  TTY ", .description = "Controlling terminal", .flags = 0, },
-   { .name = "TPGID", .title = "  TPGID ", .description = "Process ID of the fg process group of the controlling terminal", .flags = 0, },
-   { .name = "FLAGS", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "MINFLT", .title = "     MINFLT ", .description = "Number of minor faults which have not required loading a memory page from disk", .flags = 0, },
-   { .name = "CMINFLT", .title = "    CMINFLT ", .description = "Children processes' minor faults", .flags = 0, },
-   { .name = "MAJFLT", .title = "     MAJFLT ", .description = "Number of major faults which have required loading a memory page from disk", .flags = 0, },
-   { .name = "CMAJFLT", .title = "    CMAJFLT ", .description = "Children processes' major faults", .flags = 0, },
-   { .name = "UTIME", .title = " UTIME+  ", .description = "User CPU time - time the process spent executing in user mode", .flags = 0, },
-   { .name = "STIME", .title = " STIME+  ", .description = "System CPU time - time the kernel spent running system calls for this process", .flags = 0, },
-   { .name = "CUTIME", .title = " CUTIME+ ", .description = "Children processes' user CPU time", .flags = 0, },
-   { .name = "CSTIME", .title = " CSTIME+ ", .description = "Children processes' system CPU time", .flags = 0, },
-   { .name = "PRIORITY", .title = "PRI ", .description = "Kernel's internal priority for the process", .flags = 0, },
-   { .name = "NICE", .title = " NI ", .description = "Nice value (the higher the value, the more it lets other processes take priority)", .flags = 0, },
-   { .name = "ITREALVALUE", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "STARTTIME", .title = "START ", .description = "Time the process was started", .flags = 0, },
-   { .name = "VSIZE", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "RSS", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "RLIM", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "STARTCODE", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "ENDCODE", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "STARTSTACK", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "KSTKESP", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "KSTKEIP", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "SIGNAL", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "BLOCKED", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "SIGIGNORE", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "SIGCATCH", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "WCHAN", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "NSWAP", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "CNSWAP", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "EXIT_SIGNAL", .title = NULL, .description = NULL, .flags = 0, },
-   { .name = "PROCESSOR", .title = "CPU ", .description = "Id of the CPU the process last executed on", .flags = 0, },
-   { .name = "M_SIZE", .title = " VIRT ", .description = "Total program size in virtual memory", .flags = 0, },
-   { .name = "M_RESIDENT", .title = "  RES ", .description = "Resident set size, size of the text and data sections, plus stack usage", .flags = 0, },
-   { .name = "M_SHARE", .title = "  SHR ", .description = "Size of the process's shared pages", .flags = 0, },
-   { .name = "M_TRS", .title = " CODE ", .description = "Size of the text segment of the process", .flags = 0, },
-   { .name = "M_DRS", .title = " DATA ", .description = "Size of the data segment plus stack usage of the process", .flags = 0, },
-   { .name = "M_LRS", .title = " LIB ", .description = "The library size of the process", .flags = 0, },
-   { .name = "M_DT", .title = " DIRTY ", .description = "Size of the dirty pages of the process", .flags = 0, },
-   { .name = "ST_UID", .title = " UID ", .description = "User ID of the process owner", .flags = 0, },
-   { .name = "PERCENT_CPU", .title = "CPU% ", .description = "Percentage of the CPU time the process used in the last sampling", .flags = 0, },
-   { .name = "PERCENT_MEM", .title = "MEM% ", .description = "Percentage of the memory the process is using, based on resident memory size", .flags = 0, },
-   { .name = "USER", .title = "USER      ", .description = "Username of the process owner (or user ID if name cannot be determined)", .flags = 0, },
-   { .name = "TIME", .title = "  TIME+  ", .description = "Total time the process has spent in user and system time", .flags = 0, },
-   { .name = "NLWP", .title = "NLWP ", .description = "Number of threads in the process", .flags = 0, },
-   { .name = "TGID", .title = "   TGID ", .description = "Thread group ID (i.e. process ID)", .flags = 0, },
-#ifdef HAVE_OPENVZ
-   { .name = "CTID", .title = "   CTID ", .description = "OpenVZ container ID (a.k.a. virtual environment ID)", .flags = PROCESS_FLAG_OPENVZ, },
-   { .name = "VPID", .title = " VPID ", .description = "OpenVZ process ID", .flags = PROCESS_FLAG_OPENVZ, },
-#endif
-#ifdef HAVE_VSERVER
-   { .name = "VXID", .title = " VXID ", .description = "VServer process ID", .flags = PROCESS_FLAG_VSERVER, },
-#endif
-#ifdef HAVE_TASKSTATS
-   { .name = "RCHAR", .title = "    RD_CHAR ", .description = "Number of bytes the process has read", .flags = PROCESS_FLAG_IO, },
-   { .name = "WCHAR", .title = "    WR_CHAR ", .description = "Number of bytes the process has written", .flags = PROCESS_FLAG_IO, },
-   { .name = "SYSCR", .title = "    RD_SYSC ", .description = "Number of read(2) syscalls for the process", .flags = PROCESS_FLAG_IO, },
-   { .name = "SYSCW", .title = "    WR_SYSC ", .description = "Number of write(2) syscalls for the process", .flags = PROCESS_FLAG_IO, },
-   { .name = "RBYTES", .title = "  IO_RBYTES ", .description = "Bytes of read(2) I/O for the process", .flags = PROCESS_FLAG_IO, },
-   { .name = "WBYTES", .title = "  IO_WBYTES ", .description = "Bytes of write(2) I/O for the process", .flags = PROCESS_FLAG_IO, },
-   { .name = "CNCLWB", .title = "  IO_CANCEL ", .description = "Bytes of cancelled write(2) I/O", .flags = PROCESS_FLAG_IO, },
-   { .name = "IO_READ_RATE", .title = "  DISK READ ", .description = "The I/O rate of read(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, },
-   { .name = "IO_WRITE_RATE", .title = " DISK WRITE ", .description = "The I/O rate of write(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, },
-   { .name = "IO_RATE", .title = "   DISK R/W ", .description = "Total I/O rate in bytes per second", .flags = PROCESS_FLAG_IO, },
-#endif
-#ifdef HAVE_CGROUP
-   { .name = "CGROUP", .title = "    CGROUP ", .description = "Which cgroup the process is in", .flags = PROCESS_FLAG_CGROUP, },
-#endif
-#ifdef HAVE_OOM
-   { .name = "OOM", .title = "    OOM ", .description = "OOM (Out-of-Memory) killer score", .flags = 0, },
-#endif
-   { .name = "IO_PRIORITY", .title = "IO ", .description = "I/O priority", .flags = PROCESS_FLAG_IOPRIO, },
-   { .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
-};
-
 static int Process_getuid = -1;
 
-static char* Process_pidFormat = "%7u ";
-static char* Process_tpgidFormat = "%7u ";
-
-void Process_setupColumnWidths() {
-   int maxPid = Platform_getMaxPid();
-   if (maxPid == -1) return;
-   if (maxPid > 99999) {
-      Process_fields[PID].title =     "    PID ";
-      Process_fields[PPID].title =    "   PPID ";
-      #ifdef HAVE_OPENVZ
-      Process_fields[VPID].title =    "   VPID ";
-      #endif
-      Process_fields[TPGID].title =   "  TPGID ";
-      Process_fields[TGID].title =    "   TGID ";
-      Process_fields[PGRP].title =    "   PGRP ";
-      Process_fields[SESSION].title = "   SESN ";
-      #ifdef HAVE_OOM
-      Process_fields[OOM].title =     "    OOM ";
-      #endif
-      Process_pidFormat = "%7u ";
-      Process_tpgidFormat = "%7d ";
-   } else {
-      Process_fields[PID].title =     "  PID ";
-      Process_fields[PPID].title =    " PPID ";
-      #ifdef HAVE_OPENVZ
-      Process_fields[VPID].title =    " VPID ";
-      #endif
-      Process_fields[TPGID].title =   "TPGID ";
-      Process_fields[TGID].title =    " TGID ";
-      Process_fields[PGRP].title =    " PGRP ";
-      Process_fields[SESSION].title = " SESN ";
-      #ifdef HAVE_OOM
-      Process_fields[OOM].title =     "  OOM ";
-      #endif
-      Process_pidFormat = "%5u ";
-      Process_tpgidFormat = "%5d ";
-   }
-}
-
 #define ONE_K 1024L
 #define ONE_M (ONE_K * ONE_K)
 #define ONE_G (ONE_M * ONE_K)
diff --git a/Process.h b/Process.h
index 38cbaaef..82db228a 100644
--- a/Process.h
+++ b/Process.h
@@ -20,11 +20,7 @@ in the source distribution for its full text.
 
 #include <sys/types.h>
 
-#define PROCESS_FLAG_IO 1
-#define PROCESS_FLAG_IOPRIO 2
-#define PROCESS_FLAG_OPENVZ 4
-#define PROCESS_FLAG_VSERVER 8
-#define PROCESS_FLAG_CGROUP 16
+#define PROCESS_FLAG_IO 0x0001
 
 #ifndef Process_isKernelThread
 #define Process_isKernelThread(_process) (_process->pgrp == 0)
@@ -38,30 +34,7 @@ in the source distribution for its full text.
 #define Process_isThread(_process) (Process_isUserlandThread(_process) || Process_isKernelThread(_process))
 #endif
 
-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, NLWP, TGID,
-   #ifdef HAVE_OPENVZ
-   CTID, VPID,
-   #endif
-   #ifdef HAVE_VSERVER
-   VXID,
-   #endif
-   #ifdef HAVE_TASKSTATS
-   RCHAR, WCHAR, SYSCR, SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE, IO_RATE,
-   #endif
-   #ifdef HAVE_CGROUP
-   CGROUP,
-   #endif
-   #ifdef HAVE_OOM
-   OOM,
-   #endif
-   IO_PRIORITY,
-   LAST_PROCESSFIELD
-} ProcessField;
+typedef int ProcessField;
 
 typedef struct Process_ {
    Object super;
@@ -71,6 +44,10 @@ typedef struct Process_ {
    pid_t pid;
    char* comm;
    int indent;
+
+   int basenameOffset;
+   bool updated;
+
    char state;
    bool tag;
    bool showChildren;
@@ -137,8 +114,6 @@ typedef struct Process_ {
    #endif
 
    int exit_signal;
-   int basenameOffset;
-   bool updated;
 
    unsigned long int minflt;
    unsigned long int cminflt;
@@ -176,11 +151,6 @@ void Process_writeField(Process* this, RichString* str, ProcessField field);
 long Process_compare(const void* v1, const void* v2);
 
 
-extern ProcessFieldData Process_fields[];
-
-
-void Process_setupColumnWidths();
-
 #define ONE_K 1024L
 #define ONE_M (ONE_K * ONE_K)
 #define ONE_G (ONE_M * ONE_K)
diff --git a/ProcessList.c b/ProcessList.c
index e4bdb07d..1b36ac54 100644
--- a/ProcessList.c
+++ b/ProcessList.c
@@ -6,6 +6,7 @@ in the source distribution for its full text.
 */
 
 #include "ProcessList.h"
+#include "Platform.h"
 
 #include "CRT.h"
 #include "String.h"
diff --git a/Settings.c b/Settings.c
index 8f2db0e8..fe62e9ba 100644
--- a/Settings.c
+++ b/Settings.c
@@ -6,6 +6,7 @@ in the source distribution for its full text.
 */
 
 #include "Settings.h"
+#include "Platform.h"
 
 #include "String.h"
 #include "Vector.h"
@@ -139,10 +140,10 @@ static void readFields(ProcessField* fields, int* flags, const char* line) {
    free(trim);
    int i, j;
    *flags = 0;
-   for (j = 0, i = 0; i < LAST_PROCESSFIELD && ids[i]; i++) {
+   for (j = 0, i = 0; i < Platform_numberOfFields && ids[i]; i++) {
       // This "+1" is for compatibility with the older enum format.
       int id = atoi(ids[i]) + 1;
-      if (id > 0 && id < LAST_PROCESSFIELD) {
+      if (id > 0 && id < Platform_numberOfFields) {
          fields[j] = id;
          *flags |= Process_fields[id].flags;
          j++;
@@ -310,7 +311,7 @@ Settings* Settings_new(int cpuCount) {
    this->countCPUsFromZero = false;
    this->updateProcessNames = false;
    
-   this->fields = calloc(LAST_PROCESSFIELD+1, sizeof(ProcessField));
+   this->fields = calloc(Platform_numberOfFields+1, sizeof(ProcessField));
    // TODO: turn 'fields' into a Vector,
    // (and ProcessFields into proper objects).
    this->flags = 0;
diff --git a/htop.c b/htop.c
index ef3182de..b1b0d7f4 100644
--- a/htop.c
+++ b/htop.c
@@ -16,6 +16,7 @@ in the source distribution for its full text.
 #include "ScreenManager.h"
 #include "Settings.h"
 #include "UsersTable.h"
+#include "Platform.h"
 
 #include <getopt.h>
 #include <locale.h>
@@ -101,7 +102,7 @@ static CommandLineSettings parseArguments(int argc, char** argv) {
             break;
          case 's':
             if (strcmp(optarg, "help") == 0) {
-               for (int j = 1; j < LAST_PROCESSFIELD; j++) {
+               for (int j = 1; j < Platform_numberOfFields; j++) {
                   const char* name = Process_fields[j].name;
                   if (name) printf ("%s\n", name);
                }
diff --git a/linux/LinuxProcess.c b/linux/LinuxProcess.c
index c943b112..c45e7d9d 100644
--- a/linux/LinuxProcess.c
+++ b/linux/LinuxProcess.c
@@ -8,6 +8,7 @@ in the source distribution for its full text.
 #include "Process.h"
 #include "ProcessList.h"
 #include "LinuxProcess.h"
+#include "Platform.h"
 #include "CRT.h"
 
 #include <stdlib.h>
@@ -16,6 +17,36 @@ in the source distribution for its full text.
 
 /*{
 
+#define PROCESS_FLAG_LINUX_IOPRIO   0x0100
+#define PROCESS_FLAG_LINUX_OPENVZ   0x0200
+#define PROCESS_FLAG_LINUX_VSERVER  0x0400
+#define PROCESS_FLAG_LINUX_CGROUP   0x0800
+
+typedef enum LinuxProcessFields {
+   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, NLWP, TGID,
+   #ifdef HAVE_OPENVZ
+   CTID, VPID,
+   #endif
+   #ifdef HAVE_VSERVER
+   VXID,
+   #endif
+   #ifdef HAVE_TASKSTATS
+   RCHAR, WCHAR, SYSCR, SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE, IO_RATE,
+   #endif
+   #ifdef HAVE_CGROUP
+   CGROUP,
+   #endif
+   #ifdef HAVE_OOM
+   OOM,
+   #endif
+   IO_PRIORITY,
+   LAST_PROCESSFIELD
+} LinuxProcessField;
+
 #include "IOPriority.h"
 
 typedef struct LinuxProcess_ {
@@ -27,6 +58,128 @@ typedef struct LinuxProcess_ {
 
 }*/
 
+ProcessFieldData Process_fields[] = {
+   { .name = "", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "PID", .title = "    PID ", .description = "Process/thread ID", .flags = 0, },
+   { .name = "Command", .title = "Command ", .description = "Command line", .flags = 0, },
+   { .name = "STATE", .title = "S ", .description = "Process state (S sleeping, R running, D disk, Z zombie, T traced, W paging)", .flags = 0, },
+   { .name = "PPID", .title = "   PPID ", .description = "Parent process ID", .flags = 0, },
+   { .name = "PGRP", .title = "   PGRP ", .description = "Process group ID", .flags = 0, },
+   { .name = "SESSION", .title = "   SESN ", .description = "Process's session ID", .flags = 0, },
+   { .name = "TTY_NR", .title = "  TTY ", .description = "Controlling terminal", .flags = 0, },
+   { .name = "TPGID", .title = "  TPGID ", .description = "Process ID of the fg process group of the controlling terminal", .flags = 0, },
+   { .name = "FLAGS", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "MINFLT", .title = "     MINFLT ", .description = "Number of minor faults which have not required loading a memory page from disk", .flags = 0, },
+   { .name = "CMINFLT", .title = "    CMINFLT ", .description = "Children processes' minor faults", .flags = 0, },
+   { .name = "MAJFLT", .title = "     MAJFLT ", .description = "Number of major faults which have required loading a memory page from disk", .flags = 0, },
+   { .name = "CMAJFLT", .title = "    CMAJFLT ", .description = "Children processes' major faults", .flags = 0, },
+   { .name = "UTIME", .title = " UTIME+  ", .description = "User CPU time - time the process spent executing in user mode", .flags = 0, },
+   { .name = "STIME", .title = " STIME+  ", .description = "System CPU time - time the kernel spent running system calls for this process", .flags = 0, },
+   { .name = "CUTIME", .title = " CUTIME+ ", .description = "Children processes' user CPU time", .flags = 0, },
+   { .name = "CSTIME", .title = " CSTIME+ ", .description = "Children processes' system CPU time", .flags = 0, },
+   { .name = "PRIORITY", .title = "PRI ", .description = "Kernel's internal priority for the process", .flags = 0, },
+   { .name = "NICE", .title = " NI ", .description = "Nice value (the higher the value, the more it lets other processes take priority)", .flags = 0, },
+   { .name = "ITREALVALUE", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "STARTTIME", .title = "START ", .description = "Time the process was started", .flags = 0, },
+   { .name = "VSIZE", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "RSS", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "RLIM", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "STARTCODE", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "ENDCODE", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "STARTSTACK", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "KSTKESP", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "KSTKEIP", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "SIGNAL", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "BLOCKED", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "SIGIGNORE", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "SIGCATCH", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "WCHAN", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "NSWAP", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "CNSWAP", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "EXIT_SIGNAL", .title = NULL, .description = NULL, .flags = 0, },
+   { .name = "PROCESSOR", .title = "CPU ", .description = "Id of the CPU the process last executed on", .flags = 0, },
+   { .name = "M_SIZE", .title = " VIRT ", .description = "Total program size in virtual memory", .flags = 0, },
+   { .name = "M_RESIDENT", .title = "  RES ", .description = "Resident set size, size of the text and data sections, plus stack usage", .flags = 0, },
+   { .name = "M_SHARE", .title = "  SHR ", .description = "Size of the process's shared pages", .flags = 0, },
+   { .name = "M_TRS", .title = " CODE ", .description = "Size of the text segment of the process", .flags = 0, },
+   { .name = "M_DRS", .title = " DATA ", .description = "Size of the data segment plus stack usage of the process", .flags = 0, },
+   { .name = "M_LRS", .title = " LIB ", .description = "The library size of the process", .flags = 0, },
+   { .name = "M_DT", .title = " DIRTY ", .description = "Size of the dirty pages of the process", .flags = 0, },
+   { .name = "ST_UID", .title = " UID ", .description = "User ID of the process owner", .flags = 0, },
+   { .name = "PERCENT_CPU", .title = "CPU% ", .description = "Percentage of the CPU time the process used in the last sampling", .flags = 0, },
+   { .name = "PERCENT_MEM", .title = "MEM% ", .description = "Percentage of the memory the process is using, based on resident memory size", .flags = 0, },
+   { .name = "USER", .title = "USER      ", .description = "Username of the process owner (or user ID if name cannot be determined)", .flags = 0, },
+   { .name = "TIME", .title = "  TIME+  ", .description = "Total time the process has spent in user and system time", .flags = 0, },
+   { .name = "NLWP", .title = "NLWP ", .description = "Number of threads in the process", .flags = 0, },
+   { .name = "TGID", .title = "   TGID ", .description = "Thread group ID (i.e. process ID)", .flags = 0, },
+#ifdef HAVE_OPENVZ
+   { .name = "CTID", .title = "   CTID ", .description = "OpenVZ container ID (a.k.a. virtual environment ID)", .flags = PROCESS_FLAG_LINUX_OPENVZ, },
+   { .name = "VPID", .title = " VPID ", .description = "OpenVZ process ID", .flags = PROCESS_FLAG_LINUX_OPENVZ, },
+#endif
+#ifdef HAVE_VSERVER
+   { .name = "VXID", .title = " VXID ", .description = "VServer process ID", .flags = PROCESS_FLAG_LINUX_VSERVER, },
+#endif
+#ifdef HAVE_TASKSTATS
+   { .name = "RCHAR", .title = "    RD_CHAR ", .description = "Number of bytes the process has read", .flags = PROCESS_FLAG_IO, },
+   { .name = "WCHAR", .title = "    WR_CHAR ", .description = "Number of bytes the process has written", .flags = PROCESS_FLAG_IO, },
+   { .name = "SYSCR", .title = "    RD_SYSC ", .description = "Number of read(2) syscalls for the process", .flags = PROCESS_FLAG_IO, },
+   { .name = "SYSCW", .title = "    WR_SYSC ", .description = "Number of write(2) syscalls for the process", .flags = PROCESS_FLAG_IO, },
+   { .name = "RBYTES", .title = "  IO_RBYTES ", .description = "Bytes of read(2) I/O for the process", .flags = PROCESS_FLAG_IO, },
+   { .name = "WBYTES", .title = "  IO_WBYTES ", .description = "Bytes of write(2) I/O for the process", .flags = PROCESS_FLAG_IO, },
+   { .name = "CNCLWB", .title = "  IO_CANCEL ", .description = "Bytes of cancelled write(2) I/O", .flags = PROCESS_FLAG_IO, },
+   { .name = "IO_READ_RATE", .title = "  DISK READ ", .description = "The I/O rate of read(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, },
+   { .name = "IO_WRITE_RATE", .title = " DISK WRITE ", .description = "The I/O rate of write(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, },
+   { .name = "IO_RATE", .title = "   DISK R/W ", .description = "Total I/O rate in bytes per second", .flags = PROCESS_FLAG_IO, },
+#endif
+#ifdef HAVE_CGROUP
+   { .name = "CGROUP", .title = "    CGROUP ", .description = "Which cgroup the process is in", .flags = PROCESS_FLAG_LINUX_CGROUP, },
+#endif
+#ifdef HAVE_OOM
+   { .name = "OOM", .title = "    OOM ", .description = "OOM (Out-of-Memory) killer score", .flags = 0, },
+#endif
+   { .name = "IO_PRIORITY", .title = "IO ", .description = "I/O priority", .flags = PROCESS_FLAG_LINUX_IOPRIO, },
+   { .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
+};
+
+char* Process_pidFormat = "%7u ";
+char* Process_tpgidFormat = "%7u ";
+
+void Process_setupColumnWidths() {
+   int maxPid = Platform_getMaxPid();
+   if (maxPid == -1) return;
+   if (maxPid > 99999) {
+      Process_fields[PID].title =     "    PID ";
+      Process_fields[PPID].title =    "   PPID ";
+      #ifdef HAVE_OPENVZ
+      Process_fields[VPID].title =    "   VPID ";
+      #endif
+      Process_fields[TPGID].title =   "  TPGID ";
+      Process_fields[TGID].title =    "   TGID ";
+      Process_fields[PGRP].title =    "   PGRP ";
+      Process_fields[SESSION].title = "   SESN ";
+      #ifdef HAVE_OOM
+      Process_fields[OOM].title =     "    OOM ";
+      #endif
+      Process_pidFormat = "%7u ";
+      Process_tpgidFormat = "%7d ";
+   } else {
+      Process_fields[PID].title =     "  PID ";
+      Process_fields[PPID].title =    " PPID ";
+      #ifdef HAVE_OPENVZ
+      Process_fields[VPID].title =    " VPID ";
+      #endif
+      Process_fields[TPGID].title =   "TPGID ";
+      Process_fields[TGID].title =    " TGID ";
+      Process_fields[PGRP].title =    " PGRP ";
+      Process_fields[SESSION].title = " SESN ";
+      #ifdef HAVE_OOM
+      Process_fields[OOM].title =     "  OOM ";
+      #endif
+      Process_pidFormat = "%5u ";
+      Process_tpgidFormat = "%5d ";
+   }
+}
+
 LinuxProcess* LinuxProcess_new(Settings* settings) {
    LinuxProcess* this = calloc(sizeof(LinuxProcess), 1);
    Object_setClass(this, Class(Process));
diff --git a/linux/LinuxProcess.h b/linux/LinuxProcess.h
index 41a82c26..34007185 100644
--- a/linux/LinuxProcess.h
+++ b/linux/LinuxProcess.h
@@ -10,6 +10,36 @@ in the source distribution for its full text.
 */
 
 
+#define PROCESS_FLAG_LINUX_IOPRIO   0x0100
+#define PROCESS_FLAG_LINUX_OPENVZ   0x0200
+#define PROCESS_FLAG_LINUX_VSERVER  0x0400
+#define PROCESS_FLAG_LINUX_CGROUP   0x0800
+
+typedef enum LinuxProcessFields {
+   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, NLWP, TGID,
+   #ifdef HAVE_OPENVZ
+   CTID, VPID,
+   #endif
+   #ifdef HAVE_VSERVER
+   VXID,
+   #endif
+   #ifdef HAVE_TASKSTATS
+   RCHAR, WCHAR, SYSCR, SYSCW, RBYTES, WBYTES, CNCLWB, IO_READ_RATE, IO_WRITE_RATE, IO_RATE,
+   #endif
+   #ifdef HAVE_CGROUP
+   CGROUP,
+   #endif
+   #ifdef HAVE_OOM
+   OOM,
+   #endif
+   IO_PRIORITY,
+   LAST_PROCESSFIELD
+} LinuxProcessField;
+
 #include "IOPriority.h"
 
 typedef struct LinuxProcess_ {
@@ -20,6 +50,13 @@ typedef struct LinuxProcess_ {
 #define Process_delete LinuxProcess_delete
 
 
+extern ProcessFieldData Process_fields[];
+
+extern char* Process_pidFormat;
+extern char* Process_tpgidFormat;
+
+void Process_setupColumnWidths();
+
 LinuxProcess* LinuxProcess_new(Settings* settings);
 
 void LinuxProcess_delete(Object* cast);
diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index 2435b120..e0e8fbd3 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -122,7 +122,7 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, ui
    }
 
    #ifdef HAVE_OPENVZ
-   this->flags |= PROCESS_FLAG_OPENVZ;
+   this->flags |= PROCESS_FLAG_LINUX_OPENVZ;
    #endif
 
    return pl;
@@ -333,10 +333,10 @@ static bool LinuxProcessList_readStatmFile(Process* process, const char* dirname
 #ifdef HAVE_OPENVZ
 
 static void LinuxProcessList_readOpenVZData(ProcessList* this, Process* process, const char* dirname, const char* name) {
-   if ( (!(this->flags & PROCESS_FLAG_OPENVZ)) || (access("/proc/vz", R_OK) != 0)) {
+   if ( (!(this->flags & PROCESS_FLAG_LINUX_OPENVZ)) || (access("/proc/vz", R_OK) != 0)) {
       process->vpid = process->pid;
       process->ctid = 0;
-      this->flags |= ~PROCESS_FLAG_OPENVZ;
+      this->flags |= ~PROCESS_FLAG_LINUX_OPENVZ;
       return;
    }
    char filename[MAX_NAME+1];
@@ -546,7 +546,7 @@ static bool LinuxProcessList_processEntries(LinuxProcessList* this, const char*
       unsigned long long int lasttimes = (process->utime + process->stime);
       if (! LinuxProcessList_readStatFile(process, dirname, name, command))
          goto errorReadingProcess;
-      if (settings->flags & PROCESS_FLAG_IOPRIO)
+      if (settings->flags & PROCESS_FLAG_LINUX_IOPRIO)
          LinuxProcess_updateIOPriority((LinuxProcess*)process);
       float percent_cpu = (process->utime + process->stime - lasttimes) / period * 100.0;
       process->percent_cpu = MAX(MIN(percent_cpu, cpus*100.0), 0.0);
@@ -565,7 +565,7 @@ static bool LinuxProcessList_processEntries(LinuxProcessList* this, const char*
          #endif
          
          #ifdef HAVE_VSERVER
-         if (settings->flags & PROCESS_FLAG_VSERVER)
+         if (settings->flags & PROCESS_FLAG_LINUX_VSERVER)
             LinuxProcessList_readVServerData(process, dirname, name);
          #endif
 
@@ -581,7 +581,7 @@ static bool LinuxProcessList_processEntries(LinuxProcessList* this, const char*
       }
 
       #ifdef HAVE_CGROUP
-      if (settings->flags & PROCESS_FLAG_CGROUP)
+      if (settings->flags & PROCESS_FLAG_LINUX_CGROUP)
          LinuxProcessList_readCGroupFile(process, dirname, name);
       #endif
       
diff --git a/linux/Platform.c b/linux/Platform.c
index 0d5b2471..3cd8c0c8 100644
--- a/linux/Platform.c
+++ b/linux/Platform.c
@@ -30,8 +30,11 @@ in the source distribution for its full text.
 #include "MainPanel.h"
 #include "BatteryMeter.h"
 #include "LinuxProcess.h"
+
 }*/
 
+int Platform_numberOfFields = LAST_PROCESSFIELD;
+
 static Htop_Reaction Platform_actionSetIOPriority(State* st) {
    Panel* panel = st->panel;
 
diff --git a/linux/Platform.h b/linux/Platform.h
index de7ca919..bc044a2c 100644
--- a/linux/Platform.h
+++ b/linux/Platform.h
@@ -14,6 +14,9 @@ in the source distribution for its full text.
 #include "BatteryMeter.h"
 #include "LinuxProcess.h"
 
+
+extern int Platform_numberOfFields;
+
 void Platform_setBindings(Htop_Action* keys);
 
 extern MeterClass* Platform_meterTypes[];