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/* cpupercent
*
* Copyright *c) 2011 John ffitch, based heavily on code:
* Copyright (c) 2002, by: James C. Warner
* All rights reserved. 8921 Hilloway Road
* Eden Prairie, Minnesota 55347 USA
* <warnerjc@worldnet.att.net>
*
* This file may be used subject to the terms and conditions of the
* GNU Library General Public License Version 2, or any later version
* at your option, as published by the Free Software Foundation.
* This program 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 Library General Public License for more details.
*
*/
#ifndef WIN32
#include "csoundCore.h"
#include <time.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <float.h>
// only available on Linux (no /proc/stat on OSX)
#if defined(LINUX)
/*###### Miscellaneous global stuff ####################################*/
#define SMLBUFSIZ (512)
#define TEST (0)
typedef unsigned long long TIC_t;
typedef long long SIC_t;
typedef struct CPU_t {
TIC_t u, n, s, i, w, x, y, z; // as represented in /proc/stat
TIC_t u_sav, n_sav, s_sav, i_sav,
w_sav, x_sav, y_sav, z_sav;
unsigned id; // the CPU ID number
} CPU_t;
typedef struct {
OPDS h;
MYFLT *k0, *kk[8], *itrig;
AUXCH cpu_a;
CPU_t *cpus;
uint32_t cpu_max;
int32_t cnt, trig;
FILE *fp;
} CPUMETER;
/*
* we preserve all cpu data in our CPU_t array which is organized
* as follows:
* cpus[0] thru cpus[n] == tics for each separate cpu
* cpus[Cpu_tot] == tics from the 1st /proc/stat line */
static int32_t deinit_cpupercent(CSOUND *csound, void *pdata)
{
CPUMETER *p = (CPUMETER *) pdata;
fclose(p->fp);
return OK;
}
static int32_t cpupercent_renew(CSOUND *csound, CPUMETER* p);
int32_t cpupercent_init(CSOUND *csound, CPUMETER* p)
{
char buf[SMLBUFSIZ];
int32_t k, num;
TIC_t id, u, n, s, i, w, x, y, z;
if (!(p->fp = fopen("/proc/stat", "r")))
return
csound->InitError(csound,
Str("Failed to open /proc/stat: %s"), strerror(errno));
if (!fgets(buf, sizeof(buf), p->fp))
return csound->InitError(csound, Str("failed /proc/stat read"));
num = sscanf(buf, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu",
&u, &n, &s, &i, &w, &x, &y, &z);
for (k = 0; ; k++) {
if (!fgets(buf, SMLBUFSIZ, p->fp))
return csound->InitError(csound,Str("failed /proc/stat read"));
num = sscanf(buf, "cpu%llu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu",
&id, &u, &n, &s, &i, &w, &x, &y, &z);
if (num<4) break;
}
p->cpu_max = k-1;
csound->AuxAlloc(csound,k*sizeof(CPU_t), &(p->cpu_a));
p->cpus = (CPU_t *) p->cpu_a.auxp;
k = cpupercent_renew(csound, p);
p->cnt = (p->trig = (int32_t)(*p->itrig * csound->GetSr(csound)));
// Would it be better to add a deinit process so the closing happens in perf?
//csound->CreateFileHandle(csound, &p->fp, CSFILE_STD, "/proc/stat");
csound->RegisterDeinitCallback(csound, (void *) p, deinit_cpupercent);
return k;
}
static int32_t cpupercent_renew(CSOUND *csound, CPUMETER* p)
{
#define TRIMz(x) ((tz = (SIC_t)(x)) < 0 ? 0 : tz)
SIC_t u_frme, s_frme, n_frme, i_frme,
w_frme, x_frme, y_frme, z_frme, tot_frme, tz;
double scale;
uint32_t k;
CPU_t *cpu = p->cpus;
char buf[SMLBUFSIZ];
rewind(p->fp);
fflush(p->fp);
k = p->cpu_max;
if (!fgets(buf, SMLBUFSIZ, p->fp))
return csound->PerfError(csound, &(p->h),
Str("failed /proc/stat read"));
/*num = */sscanf(buf, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu",
&cpu[k].u, &cpu[k].n, &cpu[k].s, &cpu[k].i,
&cpu[k].w, &cpu[k].x, &cpu[k].y, &cpu[k].z);
u_frme = cpu[k].u - cpu[k].u_sav;
s_frme = cpu[k].s - cpu[k].s_sav;
n_frme = cpu[k].n - cpu[k].n_sav;
i_frme = TRIMz(cpu[k].i - cpu[k].i_sav);
w_frme = cpu[k].w - cpu[k].w_sav;
x_frme = cpu[k].x - cpu[k].x_sav;
y_frme = cpu[k].y - cpu[k].y_sav;
z_frme = cpu[k].z - cpu[k].z_sav;
tot_frme = u_frme + s_frme + n_frme + i_frme +
w_frme + x_frme + y_frme + z_frme;
if (tot_frme < 1) tot_frme = 1;
scale = 100.0 / (double)tot_frme;
*p->k0 = 100.0-(double)i_frme * scale;
if (TEST)
printf("**%5.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f\n",
(double)u_frme * scale,
(double)s_frme * scale,
(double)n_frme * scale,
(double)i_frme * scale,
(double)w_frme * scale,
(double)x_frme * scale,
(double)y_frme * scale,
(double)z_frme * scale
);
// remember for next time around
cpu[k].u_sav = cpu[k].u;
cpu[k].s_sav = cpu[k].s;
cpu[k].n_sav = cpu[k].n;
cpu[k].i_sav = cpu[k].i;
cpu[k].w_sav = cpu[k].w;
cpu[k].x_sav = cpu[k].x;
cpu[k].y_sav = cpu[k].y;
cpu[k].z_sav = cpu[k].z;
for (k=0; k<p->cpu_max && k+1<p->OUTOCOUNT; k++) {
if (!fgets(buf, SMLBUFSIZ, p->fp))
return csound->PerfError(csound, &(p->h),
Str("failed /proc/stat read"));
/*num = */ (void)sscanf(buf, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu",
&cpu[k].u, &cpu[k].n, &cpu[k].s, &cpu[k].i,
&cpu[k].w, &cpu[k].x, &cpu[k].y, &cpu[k].z);
u_frme = cpu[k].u - cpu[k].u_sav;
s_frme = cpu[k].s - cpu[k].s_sav;
n_frme = cpu[k].n - cpu[k].n_sav;
i_frme = TRIMz(cpu[k].i - cpu[k].i_sav);
w_frme = cpu[k].w - cpu[k].w_sav;
x_frme = cpu[k].x - cpu[k].x_sav;
y_frme = cpu[k].y - cpu[k].y_sav;
z_frme = cpu[k].z - cpu[k].z_sav;
tot_frme = u_frme + s_frme + n_frme + i_frme +
w_frme + x_frme + y_frme + z_frme;
if (tot_frme < 1) tot_frme = 1;
scale = 100.0 / (double)tot_frme;
//if (p->kk[k]==NULL) break;
*p->kk[k] = 100.0-i_frme * scale;
if (TEST)
printf("%7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f\n",
(double)u_frme * scale,
(double)s_frme * scale,
(double)n_frme * scale,
(double)i_frme * scale,
(double)w_frme * scale,
(double)x_frme * scale,
(double)y_frme * scale,
(double)z_frme * scale);
// remember for next time around
cpu[k].u_sav = cpu[k].u;
cpu[k].s_sav = cpu[k].s;
cpu[k].n_sav = cpu[k].n;
cpu[k].i_sav = cpu[k].i;
cpu[k].w_sav = cpu[k].w;
cpu[k].x_sav = cpu[k].x;
cpu[k].y_sav = cpu[k].y;
cpu[k].z_sav = cpu[k].z;
*p->kk[k] = 100.0-i_frme * scale;
}
return OK;
#undef TRIMz
}
static int32_t cpupercent(CSOUND *csound, CPUMETER* p)
{
p->cnt -= CS_KSMPS;
if (p->cnt< 0) {
int32_t n = cpupercent_renew(csound, p);
p->cnt = p->trig;
return n;
}
return OK;
}
#else
typedef struct {
OPDS h;
MYFLT *k0, *kk[8], *itrig;
} CPUMETER;
int32_t cpupercent_init(CSOUND *csound, CPUMETER *p) {
IGN(p);
csound->Message(csound, "not implemented\n");
return OK;
}
int32_t cpupercent(CSOUND *c, CPUMETER *p) {
IGN(c);
IGN(p);
return OK;
}
#endif
typedef struct {
OPDS h;
MYFLT *ti;
} SYST;
static int32_t
systime(CSOUND *csound, SYST *p){
IGN(csound);
#if HAVE_CLOCK_GETTIME
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
*p->ti = round((ts.tv_sec + ts.tv_nsec/1.e9)*1000);
#else
*p->ti = FL(0.0);
#endif
return OK;
}
#define S(x) sizeof(x)
static OENTRY cpumeter_localops[] = {
{ "cpumeter", S(CPUMETER), 0,3, "kzzzzzzzz", "i",
(SUBR)cpupercent_init, (SUBR)cpupercent },
{ "systime", S(SYST),0, 3, "k", "", (SUBR)systime, (SUBR)systime},
{ "systime", S(SYST),0, 1, "i", "", (SUBR)systime}
};
LINKAGE_BUILTIN(cpumeter_localops)
#endif
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