- Fix calculation of available memory

PR:		ports/157195
Submitted by:	Sayetsky Anton <jason@linux.lg.ua>
Approved by:	Hung-Yi Chen <gaod@hychen.org> (maintainer)

sysutils/htop/Makefile

@@ -7,6 +7,7 @@
 
 PORTNAME=	htop
 PORTVERSION=	0.9
+PORTREVISION=	1
 CATEGORIES=	sysutils
 MASTER_SITES=	SF
 

sysutils/htop/files/patch-ProcessList.c

@@ -0,0 +1,87 @@
+--- ./ProcessList.c.orig	2010-11-26 18:50:25.000000000 +0200
++++ ./ProcessList.c	2011-08-11 13:07:08.000000000 +0300
+@@ -32,6 +32,19 @@
+ #include "debug.h"
+ #include <assert.h>
+ 
++#ifndef PAGE_SIZE
++#define PAGE_SIZE sysconf(_SC_PAGESIZE)
++#endif
++
++#ifdef __FreeBSD__
++#define KB 1024
++#define SYSCTLBYNAME(name, var, len) sysctlbyname(name, &(var), &(len), NULL, 0)
++#include <kvm.h>
++#include <paths.h>
++#include <fcntl.h>
++#include <sys/sysctl.h>
++#endif
++
+ /*{
+ 
+ #ifndef PROCDIR
+@@ -665,15 +678,24 @@
+ 
+ void ProcessList_scan(ProcessList* this) {
+    unsigned long long int usertime, nicetime, systemtime, systemalltime, idlealltime, idletime, totaltime, virtalltime;
++   #ifndef __FreeBSD__
+    unsigned long long int swapFree = 0;
++   #endif
++   int cpus = this->cpuCount;
++   FILE* file = NULL;
+ 
+-   FILE* file = fopen(PROCMEMINFOFILE, "r");
++   #ifdef __FreeBSD__
++   kvm_t *kd = NULL;
++   struct kvm_swap kvmswapinfo[1];
++   size_t len = 0;
++   #endif
++
++   #ifndef __FreeBSD__
++   file = fopen(PROCMEMINFOFILE, "r");
+    assert(file != NULL);
+-   int cpus = this->cpuCount;
+    {
+       char buffer[128];
+       while (fgets(buffer, 128, file)) {
+-   
+          switch (buffer[0]) {
+          case 'M':
+             if (String_startsWith(buffer, "MemTotal:"))
+@@ -700,10 +722,35 @@
+          }
+       }
+    }
++   fclose(file);
++   #endif
+ 
++   #ifdef __FreeBSD__
++   len = sizeof(this->totalMem);
++   SYSCTLBYNAME("vm.stats.vm.v_page_count", this->totalMem, len);
++   this->totalMem *= PAGE_SIZE / KB;
++   len = sizeof(this->cachedMem);
++   SYSCTLBYNAME("vm.stats.vm.v_cache_count", this->cachedMem, len);
++   this->cachedMem *= PAGE_SIZE / KB;
++   len = sizeof(this->buffersMem);
++   SYSCTLBYNAME("vfs.bufspace", this->buffersMem, len);
++   this->buffersMem /= KB;
++   len = sizeof(this->usedMem);
++   SYSCTLBYNAME("vm.stats.vm.v_active_count", this->usedMem, len);
++   this->usedMem = this->usedMem * PAGE_SIZE / KB + this->cachedMem + this->buffersMem;
++   this->freeMem = this->totalMem - this->usedMem;
++   kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
++   assert(kd != NULL);
++   kvm_getswapinfo(kd, kvmswapinfo, 1, 0);
++   this->totalSwap = kvmswapinfo[0].ksw_total * PAGE_SIZE / KB;
++   this->usedSwap = kvmswapinfo[0].ksw_used * PAGE_SIZE / KB;
++   kvm_close(kd);
++   #endif
++
++   #ifndef __FreeBSD__
+    this->usedMem = this->totalMem - this->freeMem;
+    this->usedSwap = this->totalSwap - swapFree;
+-   fclose(file);
++   #endif
+ 
+    file = fopen(PROCSTATFILE, "r");
+    assert(file != NULL);

sysutils/htop/files/patch-configure.ac

@@ -1,6 +1,14 @@
---- configure.ac.orig	2010-12-30 03:13:16.000000000 +0800
-+++ configure.ac	2010-12-30 03:13:23.000000000 +0800
-@@ -86,7 +86,7 @@
+--- ./configure.ac.orig	2010-11-23 17:56:32.000000000 +0200
++++ ./configure.ac	2011-08-11 12:50:44.000000000 +0300
+@@ -18,6 +18,7 @@
+ 
+ # Checks for libraries.
+ AC_CHECK_LIB([m], [ceil], [], [missing_libraries="$missing_libraries libm"])
++AC_CHECK_LIB([kvm], [kvm_open], [], [missing_libraries="$missing_libraries libkvm"])
+ 
+ # Checks for header files.
+ AC_HEADER_DIRENT
+@@ -86,7 +87,7 @@
  AC_ARG_ENABLE(unicode, [AC_HELP_STRING([--enable-unicode], [enable Unicode support])], ,enable_unicode="no")
  if test "x$enable_unicode" = xyes; then
     AC_CHECK_LIB([ncursesw], [refresh], [], [missing_libraries="$missing_libraries libncursesw"])