Portable affinity using hwloc

Author: hishamhm

Action.c

@@ -271,7 +271,7 @@ static Htop_Reaction actionQuit() {
 static Htop_Reaction actionSetAffinity(State* st) {
    if (st->pl->cpuCount == 1)
       return HTOP_OK;
-#if (HAVE_LIBHWLOC || HAVE_NATIVE_AFFINITY)
+#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
    Panel* panel = st->panel;
 
    Process* p = (Process*) Panel_getSelected(panel);
@@ -405,7 +405,7 @@ static struct { const char* key; const char* info; } helpRight[] = {
    { .key = "   F9 k: ", .info = "kill process/tagged processes" },
    { .key = "   F7 ]: ", .info = "higher priority (root only)" },
    { .key = "   F8 [: ", .info = "lower priority (+ nice)" },
-#if (HAVE_LIBHWLOC || HAVE_NATIVE_AFFINITY)
+#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
    { .key = "      a: ", .info = "set CPU affinity" },
 #endif
    { .key = "      e: ", .info = "show process environment" },

Affinity.c

@@ -10,8 +10,13 @@ in the source distribution for its full text.
 #include <stdlib.h>
 
 #ifdef HAVE_LIBHWLOC
-#include <hwloc/linux.h>
-#elif HAVE_NATIVE_AFFINITY
+#include <hwloc.h>
+#if __linux__
+#define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_THREAD
+#else
+#define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_PROCESS
+#endif
+#elif HAVE_LINUX_AFFINITY
 #include <sched.h>
 #endif
 
@@ -55,7 +60,7 @@ void Affinity_add(Affinity* this, int id) {
 
 Affinity* Affinity_get(Process* proc, ProcessList* pl) {
    hwloc_cpuset_t cpuset = hwloc_bitmap_alloc();
-   bool ok = (hwloc_linux_get_tid_cpubind(pl->topology, proc->pid, cpuset) == 0);
+   bool ok = (hwloc_get_proc_cpubind(pl->topology, proc->pid, cpuset, HTOP_HWLOC_CPUBIND_FLAG) == 0);
    Affinity* affinity = NULL;
    if (ok) {
       affinity = Affinity_new(pl);
@@ -76,15 +81,15 @@ Affinity* Affinity_get(Process* proc, ProcessList* pl) {
 
 bool Affinity_set(Process* proc, Affinity* this) {
    hwloc_cpuset_t cpuset = hwloc_bitmap_alloc();
-   for (int i = 0; i < affinity->used; i++) {
-      hwloc_bitmap_set(cpuset, affinity->cpus[i]);
+   for (int i = 0; i < this->used; i++) {
+      hwloc_bitmap_set(cpuset, this->cpus[i]);
    }
-   bool ok = (hwloc_linux_set_tid_cpubind(this->pl->topology, proc->pid, cpuset) == 0);
+   bool ok = (hwloc_set_proc_cpubind(this->pl->topology, proc->pid, cpuset, HTOP_HWLOC_CPUBIND_FLAG) == 0);
    hwloc_bitmap_free(cpuset);
    return ok;
 }
 
-#elif HAVE_NATIVE_AFFINITY
+#elif HAVE_LINUX_AFFINITY
 
 Affinity* Affinity_get(Process* proc, ProcessList* pl) {
    cpu_set_t cpuset;

Affinity.h

@@ -10,7 +10,12 @@ in the source distribution for its full text.
 */
 
 #ifdef HAVE_LIBHWLOC
-#elif HAVE_NATIVE_AFFINITY
+#if __linux__
+#define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_THREAD
+#else
+#define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_PROCESS
+#endif
+#elif HAVE_LINUX_AFFINITY
 #endif
 
 #include "Process.h"
@@ -36,7 +41,7 @@ Affinity* Affinity_get(Process* proc, ProcessList* pl);
 
 bool Affinity_set(Process* proc, Affinity* this);
 
-#elif HAVE_NATIVE_AFFINITY
+#elif HAVE_LINUX_AFFINITY
 
 Affinity* Affinity_get(Process* proc, ProcessList* pl);
 

ProcessList.c

@@ -22,6 +22,10 @@ in the source distribution for its full text.
 #include "Process.h"
 #include "Settings.h"
 
+#ifdef HAVE_LIBHWLOC
+#include <hwloc.h>
+#endif
+
 #ifndef MAX_NAME
 #define MAX_NAME 128
 #endif

ProcessList.h

@@ -16,6 +16,10 @@ in the source distribution for its full text.
 #include "Process.h"
 #include "Settings.h"
 
+#ifdef HAVE_LIBHWLOC
+#include <hwloc.h>
+#endif
+
 #ifndef MAX_NAME
 #define MAX_NAME 128
 #endif

configure.ac

@@ -211,8 +211,8 @@ if test "$my_htop_platform" = "openbsd"; then
    AC_CHECK_LIB([kvm], [kvm_open], [], [missing_libraries="$missing_libraries libkvm"])
 fi
 
-AC_ARG_ENABLE(native_affinity, [AC_HELP_STRING([--enable-native-affinity], [enable native sched_setaffinity and sched_getaffinity for affinity support, disables hwloc])], ,enable_native_affinity="yes")
-if test "x$enable_native_affinity" = xyes -a "x$cross_compiling" = xno; then
+AC_ARG_ENABLE(linux_affinity, [AC_HELP_STRING([--enable-linux-affinity], [enable Linux sched_setaffinity and sched_getaffinity for affinity support, disables hwloc])], ,enable_linux_affinity="yes")
+if test "x$enable_linux_affinity" = xyes -a "x$cross_compiling" = xno; then
    AC_MSG_CHECKING([for usable sched_setaffinity])
    AC_RUN_IFELSE([
      AC_LANG_PROGRAM([[
@@ -225,17 +225,17 @@ if test "x$enable_native_affinity" = xyes -a "x$cross_compiling" = xno; then
        if (errno == ENOSYS) return 1;
        ]])],
      [AC_MSG_RESULT([yes])],
-     [enable_native_affinity=no
+     [enable_linux_affinity=no
       AC_MSG_RESULT([no])])
 fi
-if test "x$enable_native_affinity" = xyes; then
-   AC_DEFINE(HAVE_NATIVE_AFFINITY, 1, [Define if native sched_setaffinity and sched_getaffinity are to be used.])
+if test "x$enable_linux_affinity" = xyes; then
+   AC_DEFINE(HAVE_LINUX_AFFINITY, 1, [Define if Linux sched_setaffinity and sched_getaffinity are to be used.])
 fi
 
 AC_ARG_ENABLE(hwloc, [AC_HELP_STRING([--enable-hwloc], [enable hwloc support for CPU affinity])],, enable_hwloc="no")
 if test "x$enable_hwloc" = xyes
 then
-   AC_CHECK_LIB([hwloc], [hwloc_linux_get_tid_cpubind], [], [missing_libraries="$missing_libraries libhwloc"])
+   AC_CHECK_LIB([hwloc], [hwloc_get_proc_cpubind], [], [missing_libraries="$missing_libraries libhwloc"])
    AC_CHECK_HEADERS([hwloc.h],[:], [missing_headers="$missing_headers $ac_header"])
 fi