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statgrab.c
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statgrab.c
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/*
* Copyright 2008 Dag Odenhall <dag.odenhall@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ruby.h>
#include <statgrab.h>
#include <string.h>
VALUE cStatgrab;
VALUE eStatgrabException;
VALUE eStatgrabAsprintfError;
VALUE eStatgrabDevicesError;
VALUE eStatgrabDevstatGetdevsError;
VALUE eStatgrabDevstatSelectdevsError;
VALUE eStatgrabDiskinfoError;
VALUE eStatgrabEnoentError;
VALUE eStatgrabGetifaddrsError;
VALUE eStatgrabGetmntinfoError;
VALUE eStatgrabGetpagesizeError;
VALUE eStatgrabHostError;
VALUE eStatgrabKstatDataLookupError;
VALUE eStatgrabKstatLookupError;
VALUE eStatgrabKstatOpenError;
VALUE eStatgrabKstatReadError;
VALUE eStatgrabKvmGetswapinfoError;
VALUE eStatgrabKvmOpenfilesError;
VALUE eStatgrabMallocError;
VALUE eStatgrabMemstatusError;
VALUE eStatgrabOpenError;
VALUE eStatgrabOpendirError;
VALUE eStatgrabParseError;
VALUE eStatgrabPdhaddError;
VALUE eStatgrabPdhcollectError;
VALUE eStatgrabPdhopenError;
VALUE eStatgrabPdhreadError;
VALUE eStatgrabPermissionError;
VALUE eStatgrabPstatError;
VALUE eStatgrabSetegidError;
VALUE eStatgrabSeteuidError;
VALUE eStatgrabSetmntentError;
VALUE eStatgrabSocketError;
VALUE eStatgrabSwapctlError;
VALUE eStatgrabSysconfError;
VALUE eStatgrabSysctlError;
VALUE eStatgrabSysctlbynameError;
VALUE eStatgrabSysctlnametomibError;
VALUE eStatgrabUnameError;
VALUE eStatgrabUnsupportedError;
VALUE eStatgrabXswVerMismatchError;
/*
* Get the latest error from statgrab and, if there is one,
* raise the corresponding Ruby exception with the error message.
* Only used internally.
*/
static void
statgrab_handle_error(void)
{
sg_error err_num;
err_num = sg_get_error();
switch(err_num) {
case SG_ERROR_NONE:
return;
case SG_ERROR_ASPRINTF:
rb_raise(eStatgrabAsprintfError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_DEVICES:
rb_raise(eStatgrabDevicesError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_DEVSTAT_GETDEVS:
rb_raise(eStatgrabDevstatGetdevsError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_DEVSTAT_SELECTDEVS:
rb_raise(eStatgrabDevstatSelectdevsError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_DISKINFO:
rb_raise(eStatgrabDiskinfoError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_ENOENT:
rb_raise(eStatgrabEnoentError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_GETIFADDRS:
rb_raise(eStatgrabGetifaddrsError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_GETMNTINFO:
rb_raise(eStatgrabGetmntinfoError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_GETPAGESIZE:
rb_raise(eStatgrabGetpagesizeError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_HOST:
rb_raise(eStatgrabHostError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_KSTAT_DATA_LOOKUP:
rb_raise(eStatgrabKstatDataLookupError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_KSTAT_LOOKUP:
rb_raise(eStatgrabKstatLookupError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_KSTAT_OPEN:
rb_raise(eStatgrabKstatOpenError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_KSTAT_READ:
rb_raise(eStatgrabKstatReadError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_KVM_GETSWAPINFO:
rb_raise(eStatgrabKvmGetswapinfoError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_KVM_OPENFILES:
rb_raise(eStatgrabKvmOpenfilesError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_MALLOC:
rb_raise(eStatgrabMallocError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_MEMSTATUS:
rb_raise(eStatgrabMemstatusError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_OPEN:
rb_raise(eStatgrabOpenError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_OPENDIR:
rb_raise(eStatgrabOpendirError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_PARSE:
rb_raise(eStatgrabParseError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_PDHADD:
rb_raise(eStatgrabPdhaddError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_PDHCOLLECT:
rb_raise(eStatgrabPdhcollectError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_PDHOPEN:
rb_raise(eStatgrabPdhopenError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_PDHREAD:
rb_raise(eStatgrabPdhreadError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_PERMISSION:
rb_raise(eStatgrabPermissionError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_PSTAT:
rb_raise(eStatgrabPstatError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SETEGID:
rb_raise(eStatgrabSetegidError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SETEUID:
rb_raise(eStatgrabSeteuidError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SETMNTENT:
rb_raise(eStatgrabSetmntentError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_SOCKET:
rb_raise(eStatgrabSocketError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SWAPCTL:
rb_raise(eStatgrabSwapctlError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SYSCONF:
rb_raise(eStatgrabSysconfError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SYSCTL:
rb_raise(eStatgrabSysctlError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_SYSCTLBYNAME:
rb_raise(eStatgrabSysctlbynameError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_SYSCTLNAMETOMIB:
rb_raise(eStatgrabSysctlnametomibError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_UNAME:
rb_raise(eStatgrabUnameError, "%s", sg_str_error(err_num));
break;
case SG_ERROR_UNSUPPORTED:
rb_raise(eStatgrabUnsupportedError, "%s",
sg_str_error(err_num));
break;
case SG_ERROR_XSW_VER_MISMATCH:
rb_raise(eStatgrabXswVerMismatchError, "%s",
sg_str_error(err_num));
break;
}
}
/*
* call-seq:
* Statgrab.new(drop_privileges=true)
*
* Set privileges and prepare connections, and then drop privileges.
* See <tt>statgrab(3)</tt> manpage.
*/
static VALUE
statgrab_initialize(VALUE self, VALUE args)
{
if (sg_init())
statgrab_handle_error();
if (rb_ary_shift(args) != Qfalse && sg_drop_privileges())
statgrab_handle_error();
return self;
}
/*
* CPU usage as ticks spent in different states,
* see <tt>sg_get_cpu_stats(3)</tt> manpage.
*/
static VALUE
statgrab_cpu_stats(VALUE self)
{
sg_cpu_stats *stats;
VALUE info, time_at;
if ((stats = sg_get_cpu_stats()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("user")), INT2NUM(stats->user));
rb_hash_aset(info, ID2SYM(rb_intern("kernel")),
INT2NUM(stats->kernel));
rb_hash_aset(info, ID2SYM(rb_intern("idle")), INT2NUM(stats->idle));
rb_hash_aset(info, ID2SYM(rb_intern("iowait")),
INT2NUM(stats->iowait));
rb_hash_aset(info, ID2SYM(rb_intern("swap")), INT2NUM(stats->swap));
rb_hash_aset(info, ID2SYM(rb_intern("nice")), INT2NUM(stats->nice));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats->systime));
time_at = rb_funcall(rb_cTime, rb_intern("at"), 1,
INT2NUM(stats->systime));
rb_hash_aset(info, ID2SYM(rb_intern("time")), time_at);
return info;
}
/*
* CPU usage as ticks spent since last call,
* see <tt>sg_get_cpu_stats_diff(3)</tt> manpage.
*/
static VALUE
statgrab_cpu_stats_diff(VALUE self)
{
sg_cpu_stats *stats;
VALUE info, time_at;
if ((stats = sg_get_cpu_stats_diff()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("user")), INT2NUM(stats->user));
rb_hash_aset(info, ID2SYM(rb_intern("kernel")),
INT2NUM(stats->kernel));
rb_hash_aset(info, ID2SYM(rb_intern("idle")), INT2NUM(stats->idle));
rb_hash_aset(info, ID2SYM(rb_intern("iowait")),
INT2NUM(stats->iowait));
rb_hash_aset(info, ID2SYM(rb_intern("swap")), INT2NUM(stats->swap));
rb_hash_aset(info, ID2SYM(rb_intern("nice")), INT2NUM(stats->nice));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats->systime));
time_at = rb_funcall(rb_cTime, rb_intern("at"), 1,
INT2NUM(stats->systime));
rb_hash_aset(info, ID2SYM(rb_intern("time")), time_at);
return info;
}
/*
* CPU usage as ticks difference in percents,
* see <tt>sg_get_cpu_percents(3)</tt> manpage.
*/
static VALUE
statgrab_cpu_percents(VALUE self)
{
sg_cpu_percents *percents;
VALUE info, time_now;
if ((percents = sg_get_cpu_percents()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("user")),
rb_float_new(percents->user));
rb_hash_aset(info, ID2SYM(rb_intern("kernel")),
rb_float_new(percents->kernel));
rb_hash_aset(info, ID2SYM(rb_intern("idle")),
rb_float_new(percents->idle));
rb_hash_aset(info, ID2SYM(rb_intern("iowait")),
rb_float_new(percents->iowait));
rb_hash_aset(info, ID2SYM(rb_intern("swap")),
rb_float_new(percents->swap));
rb_hash_aset(info, ID2SYM(rb_intern("nice")),
rb_float_new(percents->nice));
rb_hash_aset(info, ID2SYM(rb_intern("time_taken")),
INT2NUM(percents->time_taken));
time_now = rb_funcall(rb_cTime, rb_intern("now"), 0);
rb_hash_aset(info, ID2SYM(rb_intern("last_call")),
rb_funcall(time_now, rb_intern("-"), 1,
INT2NUM(percents->time_taken)));
return info;
}
/*
* Disk I/O statistics, see <tt>sg_get_disk_io_stats(3)</tt> manpage.
*/
static VALUE
statgrab_disk_io_stats(VALUE self)
{
int entries, i;
sg_disk_io_stats *stats;
VALUE arr, info, time_at;
if ((stats = sg_get_disk_io_stats(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("disk_name")),
rb_str_new2(stats[i].disk_name));
rb_hash_aset(info, ID2SYM(rb_intern("read_bytes")),
INT2NUM(stats[i].read_bytes/1024));
rb_hash_aset(info, ID2SYM(rb_intern("write_bytes")),
INT2NUM(stats[i].write_bytes/1024));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats[i].systime));
time_at = rb_funcall(rb_cTime, rb_intern("at"), 1,
INT2NUM(stats[i].systime));
rb_hash_aset(info, ID2SYM(rb_intern("time")), time_at);
rb_ary_push(arr, info);
}
return arr;
}
/*
* Disk I/O statistics difference since last call,
* see <tt>sg_get_disk_io_stats_diff(3)</tt> manpage.
*/
static VALUE
statgrab_disk_io_stats_diff(VALUE self)
{
int entries, i;
sg_disk_io_stats *stats;
VALUE arr, info, time_now;
if ((stats = sg_get_disk_io_stats_diff(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for(i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("disk_name")),
rb_str_new2(stats[i].disk_name));
rb_hash_aset(info, ID2SYM(rb_intern("read_bytes")),
INT2NUM(stats[i].read_bytes/1024));
rb_hash_aset(info, ID2SYM(rb_intern("write_bytes")),
INT2NUM(stats[i].write_bytes/1024));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats[i].systime));
time_now = rb_funcall(rb_cTime, rb_intern("now"), 0);
rb_hash_aset(info, ID2SYM(rb_intern("last_call")),
rb_funcall(time_now, rb_intern("-"), 1,
INT2NUM(stats[i].systime)));
rb_ary_push(arr, info);
}
return arr;
}
/*
* Filesystem statistics, see <tt>sg_get_fs_stats(3)</tt> manpage.
*/
static VALUE
statgrab_fs_stats(VALUE self)
{
int entries, i;
sg_fs_stats *stats;
VALUE arr, info;
if ((stats = sg_get_fs_stats(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("device_name")),
rb_str_new2(stats[i].device_name));
rb_hash_aset(info, ID2SYM(rb_intern("fs_type")),
rb_str_new2(stats[i].fs_type));
rb_hash_aset(info, ID2SYM(rb_intern("mnt_point")),
rb_str_new2(stats[i].mnt_point));
rb_hash_aset(info, ID2SYM(rb_intern("size")),
INT2NUM(stats[i].size/1024));
rb_hash_aset(info, ID2SYM(rb_intern("used")),
INT2NUM(stats[i].used/1024));
rb_hash_aset(info, ID2SYM(rb_intern("avail")),
INT2NUM(stats[i].avail/1024));
rb_hash_aset(info, ID2SYM(rb_intern("total_inodes")),
INT2NUM(stats[i].total_inodes));
rb_hash_aset(info, ID2SYM(rb_intern("used_inodes")),
INT2NUM(stats[i].used_inodes));
rb_hash_aset(info, ID2SYM(rb_intern("free_inodes")),
INT2NUM(stats[i].free_inodes));
rb_hash_aset(info, ID2SYM(rb_intern("avail_blocks")),
INT2NUM(stats[i].avail_blocks));
rb_hash_aset(info, ID2SYM(rb_intern("io_size")),
INT2NUM(stats[i].io_size));
rb_hash_aset(info, ID2SYM(rb_intern("block_size")),
INT2NUM(stats[i].block_size));
rb_hash_aset(info, ID2SYM(rb_intern("total_blocks")),
INT2NUM(stats[i].total_blocks));
rb_hash_aset(info, ID2SYM(rb_intern("free_blocks")),
INT2NUM(stats[i].free_blocks));
rb_hash_aset(info, ID2SYM(rb_intern("used_blocks")),
INT2NUM(stats[i].used_blocks));
rb_hash_aset(info, ID2SYM(rb_intern("avail_blocks")),
INT2NUM(stats[i].avail_blocks));
rb_ary_push(arr, info);
}
return arr;
}
/*
* General operating system statistics,
* see <tt>sg_get_host_info(3)</tt> manpage.
*/
static VALUE
statgrab_host_info(VALUE self)
{
sg_host_info *host;
VALUE info, time_now;
if ((host = sg_get_host_info()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("os_name")),
rb_str_new2(host->os_name));
rb_hash_aset(info, ID2SYM(rb_intern("os_release")),
rb_str_new2(host->os_release));
rb_hash_aset(info, ID2SYM(rb_intern("os_version")),
rb_str_new2(host->os_version));
rb_hash_aset(info, ID2SYM(rb_intern("platform")),
rb_str_new2(host->platform));
rb_hash_aset(info, ID2SYM(rb_intern("hostname")),
rb_str_new2(host->hostname));
rb_hash_aset(info, ID2SYM(rb_intern("uptime")),
INT2NUM(host->uptime));
time_now = rb_funcall(rb_cTime, rb_intern("now"), 0);
rb_hash_aset(info, ID2SYM(rb_intern("booted")),
rb_funcall(time_now, rb_intern("-"), 1,
INT2NUM(host->uptime)));
return info;
}
/*
* System load, see <tt>sg_get_load_stats(3)</tt> manpage.
*/
static VALUE
statgrab_load_stats(VALUE self)
{
sg_load_stats *load;
VALUE info;
if ((load = sg_get_load_stats()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("min1")),
rb_float_new(load->min1));
rb_hash_aset(info, ID2SYM(rb_intern("min5")),
rb_float_new(load->min5));
rb_hash_aset(info, ID2SYM(rb_intern("min15")),
rb_float_new(load->min15));
return info;
}
/*
* Memory statistics, see <tt>sg_get_mem_stats(3)</tt> manpage.
*/
static VALUE
statgrab_mem_stats(VALUE self)
{
sg_mem_stats *stats;
VALUE info;
if ((stats = sg_get_mem_stats()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("total")),
INT2NUM(stats->total/1024));
rb_hash_aset(info, ID2SYM(rb_intern("free")),
INT2NUM(stats->free/1024));
rb_hash_aset(info, ID2SYM(rb_intern("used")),
INT2NUM(stats->used/1024));
rb_hash_aset(info, ID2SYM(rb_intern("cache")),
INT2NUM(stats->cache/1024));
return info;
}
/*
* Swap statistics, see <tt>sg_get_swap_stats(3)</tt> manpage.
*/
static VALUE
statgrab_swap_stats(VALUE self)
{
sg_swap_stats *stats;
VALUE info;
if ((stats = sg_get_swap_stats()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("total")),
INT2NUM(stats->total/1024));
rb_hash_aset(info, ID2SYM(rb_intern("used")),
INT2NUM(stats->used/1024));
rb_hash_aset(info, ID2SYM(rb_intern("free")),
INT2NUM(stats->free/1024));
return info;
}
/*
* Network statistics, see <tt>sg_get_network_io_stats(3)</tt> manpage.
*/
static VALUE
statgrab_network_io_stats(VALUE self)
{
int entries, i;
sg_network_io_stats *stats;
VALUE arr, info, time_at;
if ((stats = sg_get_network_io_stats(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("interface_name")),
rb_str_new2(stats[i].interface_name));
rb_hash_aset(info, ID2SYM(rb_intern("tx")),
INT2NUM(stats[i].tx/1024));
rb_hash_aset(info, ID2SYM(rb_intern("rx")),
INT2NUM(stats[i].rx/1024));
rb_hash_aset(info, ID2SYM(rb_intern("ipackets")),
INT2NUM(stats[i].ipackets));
rb_hash_aset(info, ID2SYM(rb_intern("opackets")),
INT2NUM(stats[i].opackets));
rb_hash_aset(info, ID2SYM(rb_intern("ierrors")),
INT2NUM(stats[i].ierrors));
rb_hash_aset(info, ID2SYM(rb_intern("oerrors")),
INT2NUM(stats[i].oerrors));
rb_hash_aset(info, ID2SYM(rb_intern("collisions")),
INT2NUM(stats[i].collisions));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats[i].systime));
time_at = rb_funcall(rb_cTime, rb_intern("at"), 1,
INT2NUM(stats[i].systime));
rb_hash_aset(info, ID2SYM(rb_intern("time")), time_at);
rb_ary_push(arr, info);
}
return arr;
}
/*
* Network statistics difference since last call,
* see <tt>sg_get_network_io_stats_diff(3)</tt> manpage.
*/
static VALUE
statgrab_network_io_stats_diff(VALUE self)
{
int entries, i;
sg_network_io_stats *stats;
VALUE arr, info, time_now;
if ((stats = sg_get_network_io_stats_diff(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("interface_name")),
rb_str_new2(stats[i].interface_name));
rb_hash_aset(info, ID2SYM(rb_intern("tx")),
INT2NUM(stats[i].tx/1024));
rb_hash_aset(info, ID2SYM(rb_intern("rx")),
INT2NUM(stats[i].rx/1024));
rb_hash_aset(info, ID2SYM(rb_intern("ipackets")),
INT2NUM(stats[i].ipackets));
rb_hash_aset(info, ID2SYM(rb_intern("opackets")),
INT2NUM(stats[i].opackets));
rb_hash_aset(info, ID2SYM(rb_intern("ierrors")),
INT2NUM(stats[i].ierrors));
rb_hash_aset(info, ID2SYM(rb_intern("oerrors")),
INT2NUM(stats[i].oerrors));
rb_hash_aset(info, ID2SYM(rb_intern("collisions")),
INT2NUM(stats[i].collisions));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats[i].systime));
time_now = rb_funcall(rb_cTime, rb_intern("now"), 0);
rb_hash_aset(info, ID2SYM(rb_intern("last_call")),
rb_funcall(time_now, rb_intern("-"), 1,
INT2NUM(stats[i].systime)));
rb_ary_push(arr, info);
}
return arr;
}
/*
* Network interface statistics,
* see <tt>sg_get_network_iface_stats(3)</tt> manpage.
*/
static VALUE
statgrab_network_iface_stats(VALUE self)
{
int entries, i;
sg_network_iface_stats *stats;
VALUE arr, info;
if ((stats = sg_get_network_iface_stats(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("interface_name")),
rb_str_new2(stats[i].interface_name));
rb_hash_aset(info, ID2SYM(rb_intern("speed")),
INT2FIX(stats[i].speed));
switch(stats[i].duplex) {
case SG_IFACE_DUPLEX_FULL:
rb_hash_aset(info, ID2SYM(rb_intern("duplex")),
ID2SYM(rb_intern("full")));
break;
case SG_IFACE_DUPLEX_HALF:
rb_hash_aset(info, ID2SYM(rb_intern("duplex")),
ID2SYM(rb_intern("half")));
break;
case SG_IFACE_DUPLEX_UNKNOWN:
rb_hash_aset(info, ID2SYM(rb_intern("duplex")),
ID2SYM(rb_intern("unknown")));
break;
}
if (stats[i].up)
rb_hash_aset(info, ID2SYM(rb_intern("up")), Qtrue);
else
rb_hash_aset(info, ID2SYM(rb_intern("up")), Qfalse);
rb_ary_push(arr, info);
}
return arr;
}
/*
* Paging statistics, see <tt>sg_get_page_stats(3)</tt> manpage.
*/
static VALUE
statgrab_page_stats(VALUE self)
{
sg_page_stats *stats;
VALUE info, time_at;
if ((stats = sg_get_page_stats()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("pages_pagein")),
INT2NUM(stats->pages_pagein));
rb_hash_aset(info, ID2SYM(rb_intern("pages_pageout")),
INT2NUM(stats->pages_pageout));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats->systime));
time_at = rb_funcall(rb_cTime, rb_intern("at"), 1,
INT2NUM(stats->systime));
rb_hash_aset(info, ID2SYM(rb_intern("time")), time_at);
return info;
}
/*
* Paging statistics difference since last call,
* see <tt>sg_get_page_stats(3)</tt> manpage.
*/
static VALUE
statgrab_page_stats_diff(VALUE self)
{
sg_page_stats *stats;
VALUE info, time_now;
if ((stats = sg_get_page_stats_diff()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("pages_pagein")),
INT2NUM(stats->pages_pagein));
rb_hash_aset(info, ID2SYM(rb_intern("pages_pageout")),
INT2NUM(stats->pages_pageout));
rb_hash_aset(info, ID2SYM(rb_intern("systime")),
INT2NUM(stats->systime));
time_now = rb_funcall(rb_cTime, rb_intern("now"), 0);
rb_hash_aset(info, ID2SYM(rb_intern("last_call")),
rb_funcall(time_now, rb_intern("-"), 1,
INT2NUM(stats->systime)));
return info;
}
/*
* Process statistics, see <tt>sg_get_process_stats(3)</tt> manpage.
*
* The +sg_process_compare_+ family of related functions is intentionally
* left out in this binding - it can be done with Enumerable#sort_by in Ruby.
* The following example corresponds to the <tt>qsort()</tt> example in the
* <tt>sg_get_process_stats(3)</tt> manpage:
*
* ps.sort_by {|p| p[:pid] }
*/
static VALUE
statgrab_process_stats(VALUE self)
{
int entries, i;
sg_process_stats *stats;
VALUE arr, info, time_now;
if ((stats = sg_get_process_stats(&entries)) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0; i < entries; i++) {
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("process_name")),
rb_str_new2(stats[i].process_name));
if (stats[i].proctitle != NULL)
rb_hash_aset(info, ID2SYM(rb_intern("proctitle")),
rb_str_new2(stats[i].proctitle));
rb_hash_aset(info, ID2SYM(rb_intern("pid")),
INT2FIX(stats[i].pid));
rb_hash_aset(info, ID2SYM(rb_intern("parent")),
INT2FIX(stats[i].parent));
rb_hash_aset(info, ID2SYM(rb_intern("pgid")),
INT2FIX(stats[i].pgid));
rb_hash_aset(info, ID2SYM(rb_intern("uid")),
INT2FIX(stats[i].uid));
rb_hash_aset(info, ID2SYM(rb_intern("euid")),
INT2FIX(stats[i].euid));
rb_hash_aset(info, ID2SYM(rb_intern("gid")),
INT2FIX(stats[i].gid));
rb_hash_aset(info, ID2SYM(rb_intern("egid")),
INT2FIX(stats[i].egid));
rb_hash_aset(info, ID2SYM(rb_intern("proc_size")),
INT2NUM(stats[i].proc_size/1024));
rb_hash_aset(info, ID2SYM(rb_intern("proc_resident")),
INT2NUM(stats[i].proc_resident/1024));
rb_hash_aset(info, ID2SYM(rb_intern("time_spent")),
INT2NUM(stats[i].time_spent));
rb_hash_aset(info, ID2SYM(rb_intern("cpu_percent")),
INT2NUM(stats[i].cpu_percent));
rb_hash_aset(info, ID2SYM(rb_intern("nice")),
INT2NUM(stats[i].nice));
switch(stats[i].state) {
case SG_PROCESS_STATE_RUNNING:
rb_hash_aset(info, ID2SYM(rb_intern("state")),
ID2SYM(rb_intern("running")));
break;
case SG_PROCESS_STATE_SLEEPING:
rb_hash_aset(info, ID2SYM(rb_intern("state")),
ID2SYM(rb_intern("sleeping")));
break;
case SG_PROCESS_STATE_STOPPED:
rb_hash_aset(info, ID2SYM(rb_intern("state")),
ID2SYM(rb_intern("stopped")));
break;
case SG_PROCESS_STATE_ZOMBIE:
rb_hash_aset(info, ID2SYM(rb_intern("state")),
ID2SYM(rb_intern("zombie")));
break;
case SG_PROCESS_STATE_UNKNOWN:
rb_hash_aset(info, ID2SYM(rb_intern("state")),
ID2SYM(rb_intern("unknown")));
break;
}
time_now = rb_funcall(rb_cTime, rb_intern("now"), 0);
rb_hash_aset(info, ID2SYM(rb_intern("started")),
rb_funcall(time_now, rb_intern("-"), 1,
INT2NUM(stats[i].time_spent)));
rb_ary_push(arr, info);
}
return arr;
}
/*
* Brief process count for different states,
* see <tt>sg_get_process_count(3)</tt> manpage.
*/
static VALUE
statgrab_process_count(VALUE self)
{
sg_process_count *count;
VALUE info;
if ((count = sg_get_process_count()) == NULL)
statgrab_handle_error();
info = rb_hash_new();
rb_hash_aset(info, ID2SYM(rb_intern("total")),
INT2FIX(count->total));
rb_hash_aset(info, ID2SYM(rb_intern("running")),
INT2FIX(count->running));
rb_hash_aset(info, ID2SYM(rb_intern("sleeping")),
INT2FIX(count->sleeping));
rb_hash_aset(info, ID2SYM(rb_intern("stopped")),
INT2FIX(count->stopped));
rb_hash_aset(info, ID2SYM(rb_intern("zombie")),
INT2FIX(count->zombie));
return info;
}
/*
* The current logged in users,
* see <tt>sg_get_user_stats(3)</tt> manpage.
*
* Returns an array of login names.
*/
static VALUE
statgrab_user_stats(VALUE self)
{
int i;
char *names, *token, *saveptr;
sg_user_stats *stats;
VALUE arr;
if ((stats = sg_get_user_stats()) == NULL)
statgrab_handle_error();
arr = rb_ary_new();
for (i = 0, names = stats->name_list; i < stats->num_entries;
i++, names = NULL) {
token = strtok_r(names, " ", &saveptr);
rb_ary_push(arr, rb_str_new2(token));
}
return arr;
}
void
Init_statgrab(void)
{
/*
* = Statgrab for Ruby
*
* Bindings to the libstatgrab portable system statistics library.
*
* == API
*
* All instance methods except user_stats return symbol hashes or
* arrays of symbol hashes corresponding to their C struct
* counterparts, see libstatgrab manuals for reference. Also, +enum+
* datatypes are represented as lowercased symbols with namespacing
* cut off, e.g. +SG_IFACE_DUPLEX_FULL+ becomes <tt>:full</tt>.
* Errors are handled and raises corresponding exceptions, all
* inheriting from Statgrab::Exception. Byte values are represented
* in kilobytes.
*
* == Sample program
*
* require 'statgrab'
* begin
* sg = Statgrab.new
* puts "CPU Usage: %.1f%%" % sg.cpu_percents[:user]
* rescue Statgrab::Exception => e
* puts "Error! %s" % e.message
* end
*/
cStatgrab = rb_define_class("Statgrab", rb_cObject);
rb_define_const(cStatgrab, "VERSION", rb_str_new2("0.1"));
/*
* Raised when a statgrab function failed and an error was set.
*/
eStatgrabException = rb_define_class_under(cStatgrab,
"Exception", rb_eException);
eStatgrabAsprintfError = rb_define_class_under(cStatgrab,
"AsprintfError", eStatgrabException);
eStatgrabDevicesError = rb_define_class_under(cStatgrab,
"DevicesError", eStatgrabException);
eStatgrabDevstatGetdevsError = rb_define_class_under(cStatgrab,
"DevstatGetdevsError", eStatgrabException);
eStatgrabDevstatSelectdevsError = rb_define_class_under(cStatgrab,
"DevstatSelectdevsError", eStatgrabException);
eStatgrabDiskinfoError = rb_define_class_under(cStatgrab,
"DiskinfoError", eStatgrabException);
eStatgrabEnoentError = rb_define_class_under(cStatgrab,
"EnoentError", eStatgrabException);
eStatgrabGetifaddrsError = rb_define_class_under(cStatgrab,
"GetifaddrsError", eStatgrabException);
eStatgrabGetmntinfoError = rb_define_class_under(cStatgrab,
"GetmntinfoError", eStatgrabException);
eStatgrabGetpagesizeError = rb_define_class_under(cStatgrab,
"GetpagesizeError", eStatgrabException);
eStatgrabHostError = rb_define_class_under(cStatgrab,
"HostError", eStatgrabException);
eStatgrabKstatDataLookupError = rb_define_class_under(cStatgrab,
"KstatDataLookupError", eStatgrabException);
eStatgrabKstatLookupError = rb_define_class_under(cStatgrab,
"KstatLookupError", eStatgrabException);
eStatgrabKstatOpenError = rb_define_class_under(cStatgrab,
"KstatOpenError", eStatgrabException);
eStatgrabKstatReadError = rb_define_class_under(cStatgrab,
"KstatReadError", eStatgrabException);
eStatgrabKvmGetswapinfoError = rb_define_class_under(cStatgrab,
"KvmGetswapinfoError", eStatgrabException);
eStatgrabKvmOpenfilesError = rb_define_class_under(cStatgrab,
"KvmOpenfilesError", eStatgrabException);
eStatgrabMallocError = rb_define_class_under(cStatgrab,
"MallocError", eStatgrabException);
eStatgrabMemstatusError = rb_define_class_under(cStatgrab,
"MemstatusError", eStatgrabException);
eStatgrabOpenError = rb_define_class_under(cStatgrab, "OpenError",
eStatgrabException);
eStatgrabOpendirError = rb_define_class_under(cStatgrab,
"OpendirError", eStatgrabException);
eStatgrabParseError = rb_define_class_under(cStatgrab,
"ParseError", eStatgrabException);
eStatgrabPdhaddError = rb_define_class_under(cStatgrab,
"PdhaddError", eStatgrabException);
eStatgrabPdhcollectError = rb_define_class_under(cStatgrab,
"PdhcollectError", eStatgrabException);
eStatgrabPdhopenError = rb_define_class_under(cStatgrab,
"PdhopenError", eStatgrabException);
eStatgrabPdhreadError = rb_define_class_under(cStatgrab,
"PdhreadError", eStatgrabException);
eStatgrabPermissionError = rb_define_class_under(cStatgrab,
"PermissionError", eStatgrabException);