diff options
Diffstat (limited to 'sysutils/libgtop/files/procaffinity.c')
-rw-r--r-- | sysutils/libgtop/files/procaffinity.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/sysutils/libgtop/files/procaffinity.c b/sysutils/libgtop/files/procaffinity.c new file mode 100644 index 00000000000..141341d9e7b --- /dev/null +++ b/sysutils/libgtop/files/procaffinity.c @@ -0,0 +1,87 @@ +/* Copyright (C) 2008 Juan Romero Pardines <xtraeme@gmail.com> + + This file is part of LibGTop 2. + + LibGTop is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + LibGTop is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + for more details. + + You should have received a copy of the GNU General Public License + along with LibGTop; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include <config.h> +#include <glibtop/procaffinity.h> +#include <glibtop/error.h> + +#include <sys/param.h> +#if __NetBSD_Version__ >= 499007200 /* 4.99.72 to play safe */ +#include <sched.h> +#endif + +void +_glibtop_init_proc_affinity_s(glibtop *server) +{ + server->sysdeps.proc_affinity = + (1 << GLIBTOP_PROC_AFFINITY_NUMBER) | + (1 << GLIBTOP_PROC_AFFINITY_ALL); + +} + + +guint16 * +glibtop_get_proc_affinity_s(glibtop *server, glibtop_proc_affinity *buf, pid_t pid) +{ +#if __NetBSD_Version__ >= 499007200 + cpuset_t *cpuset; + size_t i; + GArray* cpus; + + memset(buf, 0, sizeof *buf); + + /* create the cpuset(3) */ + cpuset = cpuset_create(); + if (cpuset == NULL) { + glibtop_error_r(server, "cpuset_getaffinity (cpuset_create) failed"); + return NULL; + } + + /* get the affinity for _this_ pid, I assume that we always want lid 0 */ + if ((_sched_getaffinity(pid, 0, cpuset_size(cpuset), cpuset)) != 0) { + cpuset_destroy(cpuset); + glibtop_error_r(server, "cpuset_getaffinity (_sched_getaffinity) failed"); + return NULL; + } + + cpus = g_array_new(FALSE, FALSE, sizeof(guint16)); + + for (i = 0; i < MIN(cpuset_size(cpuset), (size_t)(server->ncpu + 1)); i++) { + if (cpuset_isset(i, cpuset)) { + guint16 n = i; + g_array_append_val(cpus, n); + } + } + + buf->number = cpus->len; + buf->all = (cpus->len == (size_t)(server->ncpu + 1)); + buf->flags = (1 << GLIBTOP_PROC_AFFINITY_NUMBER) + | (1 << GLIBTOP_PROC_AFFINITY_ALL); + + /* we are done */ + cpuset_destroy(cpuset); + + return (guint16*) g_array_free(cpus, FALSE); +#else + memset(buf, 0, sizeof *buf); + + return NULL; +#endif +} |