Add NetBSD platform support without procfs dependency

- TODO, clean up the code base and update comments in code.

1 files changed, 240 insertions, 0 deletions

diff --git a/netbsd/NetBSDProcess.c b/netbsd/NetBSDProcess.c
new file mode 100644
index 00000000..3448e6dc
--- /dev/null
+++ b/netbsd/NetBSDProcess.c
@@ -0,0 +1,240 @@
+/*
+htop - NetBSDProcess.c
+(C) 2015 Hisham H. Muhammad
+(C) 2021 Santhosh Raju
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "NetBSDProcess.h"
+
+#include <stdlib.h>
+
+#include "CRT.h"
+#include "Process.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+const ProcessFieldData Process_fields[LAST_PROCESSFIELD] = {
+   [0] = {
+      .name = "",
+      .title = NULL,
+      .description = NULL,
+      .flags = 0,
+   },
+   [PID] = {
+      .name = "PID",
+      .title = "PID",
+      .description = "Process/thread ID",
+      .flags = 0,
+      .pidColumn = true,
+   },
+   [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,
+      .pidColumn = true,
+   },
+   [PGRP] = {
+      .name = "PGRP",
+      .title = "PGRP",
+      .description = "Process group ID",
+      .flags = 0,
+      .pidColumn = true,
+   },
+   [SESSION] = {
+      .name = "SESSION",
+      .title = "SESN",
+      .description = "Process's session ID",
+      .flags = 0,
+      .pidColumn = true,
+   },
+   [TTY] = {
+      .name = "TTY",
+      .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,
+      .pidColumn = true,
+   },
+   [MINFLT] = {
+      .name = "MINFLT",
+      .title = "     MINFLT ",
+      .description = "Number of minor faults which have not required loading a memory page from disk",
+      .flags = 0,
+      .defaultSortDesc = true,
+   },
+   [MAJFLT] = {
+      .name = "MAJFLT",
+      .title = "     MAJFLT ",
+      .description = "Number of major faults which have required loading a memory page from disk",
+      .flags = 0,
+      .defaultSortDesc = true,
+   },
+   [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,
+      .defaultSortDesc = true,
+   },
+   [M_RESIDENT] = {
+      .name = "M_RESIDENT",
+      .title = "  RES ",
+      .description = "Resident set size, size of the text and data sections, plus stack usage",
+      .flags = 0,
+      .defaultSortDesc = true,
+   },
+   [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,
+      .defaultSortDesc = true,
+   },
+   [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,
+      .defaultSortDesc = true,
+   },
+   [PERCENT_MEM] = {
+      .name = "PERCENT_MEM",
+      .title = "MEM% ",
+      .description = "Percentage of the memory the process is using, based on resident memory size",
+      .flags = 0,
+      .defaultSortDesc = true,
+   },
+   [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,
+      .defaultSortDesc = true,
+   },
+   [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,
+      .pidColumn = true,
+   },
+};
+
+Process* NetBSDProcess_new(const Settings* settings) {
+   NetBSDProcess* this = xCalloc(sizeof(NetBSDProcess), 1);
+   Object_setClass(this, Class(NetBSDProcess));
+   Process_init(&this->super, settings);
+   return &this->super;
+}
+
+void Process_delete(Object* cast) {
+   NetBSDProcess* this = (NetBSDProcess*) cast;
+   Process_done((Process*)cast);
+   free(this);
+}
+
+static void NetBSDProcess_writeField(const Process* this, RichString* str, ProcessField field) {
+   //const NetBSDProcess* op = (const NetBSDProcess*) this;
+   char buffer[256]; buffer[255] = '\0';
+   int attr = CRT_colors[DEFAULT_COLOR];
+   //int n = sizeof(buffer) - 1;
+   switch (field) {
+   // add NetBSD-specific fields here
+   default:
+      Process_writeField(this, str, field);
+      return;
+   }
+   RichString_appendWide(str, attr, buffer);
+}
+
+static int NetBSDProcess_compareByKey(const Process* v1, const Process* v2, ProcessField key) {
+   const NetBSDProcess* p1 = (const NetBSDProcess*)v1;
+   const NetBSDProcess* p2 = (const NetBSDProcess*)v2;
+
+   // remove if actually used
+   (void)p1; (void)p2;
+
+   switch (key) {
+   // add NetBSD-specific fields here
+   default:
+      return Process_compareByKey_Base(v1, v2, key);
+   }
+}
+
+const ProcessClass NetBSDProcess_class = {
+   .super = {
+      .extends = Class(Process),
+      .display = Process_display,
+      .delete = Process_delete,
+      .compare = Process_compare
+   },
+   .writeField = NetBSDProcess_writeField,
+   .compareByKey = NetBSDProcess_compareByKey
+};
+
+bool Process_isThread(const Process* this) {
+   return Process_isKernelThread(this) || Process_isUserlandThread(this);
+}