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Dummy CPU number hack for systems without the sysconf option. 

Former-commit-id: 5a6b14d97f5a1edfdf1e0e5d058d4f8de794d5fc
This commit is contained in:
Marek Nečada 2020-04-11 10:01:12 +03:00
parent dd2391abf7
commit 2ccf9e2c5d
2 changed files with 25 additions and 2 deletions
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23
qpms/oshacks.h Normal file
View File

@ -0,0 +1,23 @@
#ifndef _QPMS_OSHACKS_H
#define _QPMS_OSHACKS_H
#include <unistd.h>
#ifdef _SC_NPROCESSORS_ONLN
static inline long get_ncpus(void) {
return sysconf(_SC_NPROCESSORS_ONLN);
}
#elif (0)
#include <sys/types.h>
#include <sys/sysctl.h>
static inline long get_ncpus(void) {
int32_t ncpu;
size_t len = sizeof(ncpu);
sysctlbyname("hw.physicalcpu", &ncpu, &len, NULL, 0);
return ncpu;
}
#else
static inline long get_ncpus(void) { return -1; }
#endif
#endif // _QPMS_OSHACKS_H

4
qpms/tmatrices.c
View File

@ -14,7 +14,6 @@
#include "groups.h"
#include "symmetries.h"
#include <assert.h>
#include <unistd.h>
#include "vectors.h"
#include "quaternions.h"
#include <string.h>
@ -27,6 +26,7 @@
#include <gsl/gsl_integration.h>
#include <gsl/gsl_errno.h>
#include "optim.h"
#include "oshacks.h"
// These are quite arbitrarily chosen constants for the quadrature in qpms_tmatrix_axialsym_fill()
#define TMATRIX_AXIALSYM_INTEGRAL_EPSREL (1e-5)
@ -850,7 +850,7 @@ qpms_errno_t qpms_tmatrix_axialsym_fill(
QPMS_DEBUG(QPMS_DBGMSG_THREADS, "Using overriding value of %ld thread(s).",
nthreads);
} else {
nthreads = sysconf(_SC_NPROCESSORS_ONLN);
nthreads = get_ncpus();
if (nthreads < 1) {
QPMS_DEBUG(QPMS_DBGMSG_THREADS, "_SC_NPROCESSORS_ONLN returned %ld, using %ld thread(s) instead.",
nthreads, qpms_axsym_tmatrix_integration_nthreads_default);