Introduce Row and Table classes for screens beyond top-processes

This commit refactors the Process and ProcessList structures such
they each have a new parent - Row and Table, respectively.  These
new classes handle screen updates relating to anything that could
be represented in tabular format, e.g. cgroups, filesystems, etc,
without us having to reimplement the display logic repeatedly for
each new entity.

2 files changed, 26 insertions, 17 deletions

diff --git a/netbsd/NetBSDProcess.c b/netbsd/NetBSDProcess.c
index bdb0f50c..605b56c8 100644
--- a/netbsd/NetBSDProcess.c
+++ b/netbsd/NetBSDProcess.c
@@ -225,7 +225,8 @@ void Process_delete(Object* cast) {
    free(this);
 }
 
-static void NetBSDProcess_writeField(const Process* this, RichString* str, ProcessField field) {
+static void NetBSDProcess_rowWriteField(const Row* super, RichString* str, ProcessField field) {
+   const Process* this = (const Process*) super;
    char buffer[256]; buffer[255] = '\0';
    int attr = CRT_colors[DEFAULT_COLOR];
 
@@ -254,11 +255,18 @@ static int NetBSDProcess_compareByKey(const Process* v1, const Process* v2, Proc
 
 const ProcessClass NetBSDProcess_class = {
    .super = {
-      .extends = Class(Process),
-      .display = Process_display,
-      .delete = Process_delete,
-      .compare = Process_compare
+      .super = {
+         .extends = Class(Process),
+         .display = Row_display,
+         .delete = Process_delete,
+         .compare = Process_compare
+      },
+      .isHighlighted = Process_rowIsHighlighted,
+      .isVisible = Process_rowIsVisible,
+      .matchesFilter = Process_rowMatchesFilter,
+      .compareByParent = Process_compareByParent,
+      .sortKeyString = Process_rowGetSortKey,
+      .writeField = NetBSDProcess_rowWriteField
    },
-   .writeField = NetBSDProcess_writeField,
    .compareByKey = NetBSDProcess_compareByKey
 };
diff --git a/netbsd/NetBSDProcessList.c b/netbsd/NetBSDProcessList.c
index 9e5a9be4..1327de70 100644
--- a/netbsd/NetBSDProcessList.c
+++ b/netbsd/NetBSDProcessList.c
@@ -37,17 +37,18 @@ in the source distribution for its full text.
 
 ProcessList* ProcessList_new(Machine* host, Hashtable* pidMatchList) {
    NetBSDProcessList* this = xCalloc(1, sizeof(NetBSDProcessList));
-   ProcessList* super = (ProcessList*) this;
+   Object_setClass(this, Class(ProcessList));
 
+   ProcessList* super = (ProcessList*) this;
    ProcessList_init(super, Class(NetBSDProcess), host, pidMatchList);
 
    return super;
 }
 
-void ProcessList_delete(ProcessList* this) {
-   NetBSDProcessList* npl = (NetBSDProcessList*) this;
-   ProcessList_done(this);
-   free(npl);
+void ProcessList_delete(Object* cast) {
+   NetBSDProcessList* this = (NetBSDProcessList*) cast;
+   ProcessList_done(&this->super);
+   free(this);
 }
 
 static void NetBSDProcessList_updateExe(const struct kinfo_proc2* kproc, Process* proc) {
@@ -163,17 +164,17 @@ static void NetBSDProcessList_scanProcs(NetBSDProcessList* this) {
       bool preExisting = false;
       Process* proc = ProcessList_getProcess(&this->super, kproc->p_pid, &preExisting, NetBSDProcess_new);
 
-      proc->show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
+      proc->super.show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
 
       if (!preExisting) {
-         proc->pid = kproc->p_pid;
-         proc->ppid = kproc->p_ppid;
+         Process_setPid(proc, kproc->p_pid);
+         Process_setParent(proc, kproc->p_ppid);
+         Process_setThreadGroup(proc, kproc->p_pid);
          proc->tpgid = kproc->p_tpgid;
-         proc->tgid = kproc->p_pid;
          proc->session = kproc->p_sid;
          proc->pgrp = kproc->p__pgid;
          proc->isKernelThread = !!(kproc->p_flag & P_SYSTEM);
-         proc->isUserlandThread = proc->pid != proc->tgid;
+         proc->isUserlandThread = Process_getPid(proc) != Process_getThreadGroup(proc); // eh?
          proc->starttime_ctime = kproc->p_ustart_sec;
          Process_fillStarttimeBuffer(proc);
          ProcessList_add(&this->super, proc);
@@ -261,7 +262,7 @@ static void NetBSDProcessList_scanProcs(NetBSDProcessList* this) {
       if (proc->state == RUNNING) {
          this->super.runningTasks++;
       }
-      proc->updated = true;
+      proc->super.updated = true;
    }
 }