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, 23 insertions, 15 deletions

diff --git a/openbsd/OpenBSDProcess.c b/openbsd/OpenBSDProcess.c
index 0875dc00..c54a1763 100644
--- a/openbsd/OpenBSDProcess.c
+++ b/openbsd/OpenBSDProcess.c
@@ -217,8 +217,9 @@ void Process_delete(Object* cast) {
    free(this);
 }
 
-static void OpenBSDProcess_writeField(const Process* this, RichString* str, ProcessField field) {
-   //const OpenBSDProcess* op = (const OpenBSDProcess*) this;
+static void OpenBSDProcess_rowWriteField(const Row* super, RichString* str, ProcessField field) {
+   //const OpenBSDProcess* op = (const OpenBSDProcess*) super;
+   const Process* this = (const Process*) super;
    char buffer[256]; buffer[255] = '\0';
    int attr = CRT_colors[DEFAULT_COLOR];
    //int n = sizeof(buffer) - 1;
@@ -247,11 +248,18 @@ static int OpenBSDProcess_compareByKey(const Process* v1, const Process* v2, Pro
 
 const ProcessClass OpenBSDProcess_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 = OpenBSDProcess_rowWriteField
    },
-   .writeField = OpenBSDProcess_writeField,
    .compareByKey = OpenBSDProcess_compareByKey
 };
diff --git a/openbsd/OpenBSDProcessList.c b/openbsd/OpenBSDProcessList.c
index 84c833c3..17066397 100644
--- a/openbsd/OpenBSDProcessList.c
+++ b/openbsd/OpenBSDProcessList.c
@@ -34,17 +34,17 @@ in the source distribution for its full text.
 
 ProcessList* ProcessList_new(Machine* host, Hashtable* pidMatchList) {
    OpenBSDProcessList* this = xCalloc(1, sizeof(OpenBSDProcessList));
-   ProcessList* super = (ProcessList*) this;
+   Object_setClass(this, Class(ProcessList));
 
+   ProcessList* super = &this->super;
    ProcessList_init(super, Class(OpenBSDProcess), host, pidMatchList);
 
    return this;
 }
 
-void ProcessList_delete(ProcessList* super) {
+void ProcessList_delete(Object* cast) {
    OpenBSDProcessList* this = (OpenBSDProcessList*) super;
-
-   ProcessList_done(super);
+   ProcessList_done(&this->super);
    free(this);
 }
 
@@ -156,9 +156,9 @@ static void OpenBSDProcessList_scanProcs(OpenBSDProcessList* this) {
       OpenBSDProcess* op = (OpenBSDProcess*) proc;
 
       if (!preExisting) {
-         proc->ppid = kproc->p_ppid;
+         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 = proc->pgrp == 0;
@@ -231,8 +231,8 @@ static void OpenBSDProcessList_scanProcs(OpenBSDProcessList* this) {
          this->super.runningTasks++;
       }
 
-      proc->show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
-      proc->updated = true;
+      proc->super.show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
+      proc->super.updated = true;
    }
 }