Files moved and added for supporting separate platforms.

linux/LinuxProcess.c

@@ -0,0 +1,85 @@
+/*
+htop - LinuxProcess.c
+(C) 2014 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Process.h"
+
+/*{
+
+typedef struct LinuxProcess_ {
+   Process super;
+   IOPriority ioPriority;
+} LinuxProcess;
+
+}*/
+
+/*
+[1] Note that before kernel 2.6.26 a process that has not asked for
+an io priority formally uses "none" as scheduling class, but the
+io scheduler will treat such processes as if it were in the best
+effort class. The priority within the best effort class will  be
+dynamically  derived  from  the  cpu  nice level of the process:
+io_priority = (cpu_nice + 20) / 5. -- From ionice(1) man page
+*/
+#define LinuxProcess_effectiveIOPriority(p_) (IOPriority_class(p_->ioPriority) == IOPRIO_CLASS_NONE ? IOPriority_tuple(IOPRIO_CLASS_BE, (p_->nice + 20) / 5) : p_->ioPriority)
+
+IOPriority LinuxProcess_updateIOPriority(Process* this) {
+   IOPriority ioprio = syscall(SYS_ioprio_get, IOPRIO_WHO_PROCESS, this->pid);
+   this->ioPriority = ioprio;
+   return ioprio;
+}
+
+bool LinuxProcess_setIOPriority(Process* this, IOPriority ioprio) {
+   syscall(SYS_ioprio_set, IOPRIO_WHO_PROCESS, this->pid, ioprio);
+   return (Process_updateIOPriority(this) == ioprio);
+}
+
+void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field) {
+   switch (field) {
+   case IO_PRIORITY: {
+      int klass = IOPriority_class(this->ioPriority);
+      if (klass == IOPRIO_CLASS_NONE) {
+         // see note [1] above
+         snprintf(buffer, n, "B%1d ", (int) (this->nice + 20) / 5);
+      } else if (klass == IOPRIO_CLASS_BE) {
+         snprintf(buffer, n, "B%1d ", IOPriority_data(this->ioPriority));
+      } else if (klass == IOPRIO_CLASS_RT) {
+         attr = CRT_colors[PROCESS_HIGH_PRIORITY];
+         snprintf(buffer, n, "R%1d ", IOPriority_data(this->ioPriority));
+      } else if (this->ioPriority == IOPriority_Idle) {
+         attr = CRT_colors[PROCESS_LOW_PRIORITY]; 
+         snprintf(buffer, n, "id ");
+      } else {
+         snprintf(buffer, n, "?? ");
+      }
+      break;
+   }
+   default:
+      snprintf(buffer, n, "- ");
+   }
+   RichString_append(str, attr, buffer);
+   }
+}
+
+long LinuxProcess_compare(const void* v1, const void* v2) {
+   LinuxProcess *p1, *p2;
+   ProcessList *pl = ((Process*)v1)->pl;
+   if (pl->direction == 1) {
+      p1 = (LinuxProcess*)v1;
+      p2 = (LinuxProcess*)v2;
+   } else {
+      p2 = (LinuxProcess*)v1;
+      p1 = (LinuxProcess*)v2;
+   }
+   switch (pl->sortKey) {
+   case IO_PRIORITY:
+      return Process_effectiveIOPriority(p1) - Process_effectiveIOPriority(p2);
+   default:
+      return (p1->pid - p2->pid);
+   }
+   test_diff:
+   return (diff > 0) ? 1 : (diff < 0 ? -1 : 0);
+}