if (query == NPROC_CURRENT_OVERRIDABLE)
{
/* Test the environment variable OMP_NUM_THREADS, recognized also by all
- programs that are based on OpenMP. The OpenMP spec says that the
- value assigned to the environment variable "may have leading and
- trailing white space". */
+ programs that are based on OpenMP. The OpenMP spec says that the
+ value assigned to the environment variable "may have leading and
+ trailing white space". */
const char *envvalue = getenv ("OMP_NUM_THREADS");
if (envvalue != NULL)
- {
- while (*envvalue != '\0' && c_isspace (*envvalue))
- envvalue++;
- /* Convert it from decimal to 'unsigned long'. */
- if (c_isdigit (*envvalue))
- {
- char *endptr = NULL;
- unsigned long int value = strtoul (envvalue, &endptr, 10);
-
- if (endptr != NULL)
- {
- while (*endptr != '\0' && c_isspace (*endptr))
- endptr++;
- if (*endptr == '\0')
- return (value > 0 ? value : 1);
- }
- }
- }
+ {
+ while (*envvalue != '\0' && c_isspace (*envvalue))
+ envvalue++;
+ /* Convert it from decimal to 'unsigned long'. */
+ if (c_isdigit (*envvalue))
+ {
+ char *endptr = NULL;
+ unsigned long int value = strtoul (envvalue, &endptr, 10);
+
+ if (endptr != NULL)
+ {
+ while (*endptr != '\0' && c_isspace (*endptr))
+ endptr++;
+ if (*endptr == '\0')
+ return (value > 0 ? value : 1);
+ }
+ }
+ }
query = NPROC_CURRENT;
}
if (query == NPROC_CURRENT)
{
/* glibc >= 2.3.3 with NPTL and NetBSD 5 have pthread_getaffinity_np,
- but with different APIs. Also it requires linking with -lpthread.
- Therefore this code is not enabled.
- glibc >= 2.3.4 has sched_getaffinity whereas NetBSD 5 has
- sched_getaffinity_np. */
+ but with different APIs. Also it requires linking with -lpthread.
+ Therefore this code is not enabled.
+ glibc >= 2.3.4 has sched_getaffinity whereas NetBSD 5 has
+ sched_getaffinity_np. */
#if HAVE_PTHREAD_AFFINITY_NP && defined __GLIBC__ && 0
{
- cpu_set_t set;
+ cpu_set_t set;
- if (pthread_getaffinity_np (pthread_self (), sizeof (set), &set) == 0)
- {
- unsigned long count;
+ if (pthread_getaffinity_np (pthread_self (), sizeof (set), &set) == 0)
+ {
+ unsigned long count;
# ifdef CPU_COUNT
- /* glibc >= 2.6 has the CPU_COUNT macro. */
- count = CPU_COUNT (&set);
+ /* glibc >= 2.6 has the CPU_COUNT macro. */
+ count = CPU_COUNT (&set);
# else
- size_t i;
+ size_t i;
- count = 0;
- for (i = 0; i < CPU_SETSIZE; i++)
- if (CPU_ISSET (i, &set))
- count++;
+ count = 0;
+ for (i = 0; i < CPU_SETSIZE; i++)
+ if (CPU_ISSET (i, &set))
+ count++;
# endif
- if (count > 0)
- return count;
- }
+ if (count > 0)
+ return count;
+ }
}
#elif HAVE_PTHREAD_AFFINITY_NP && defined __NetBSD__ && 0
{
- cpuset_t *set;
-
- set = cpuset_create ();
- if (set != NULL)
- {
- unsigned long count = 0;
-
- if (pthread_getaffinity_np (pthread_self (), cpuset_size (set), set)
- == 0)
- {
- cpuid_t i;
-
- for (i = 0;; i++)
- {
- int ret = cpuset_isset (i, set);
- if (ret < 0)
- break;
- if (ret > 0)
- count++;
- }
- }
- cpuset_destroy (set);
- if (count > 0)
- return count;
- }
+ cpuset_t *set;
+
+ set = cpuset_create ();
+ if (set != NULL)
+ {
+ unsigned long count = 0;
+
+ if (pthread_getaffinity_np (pthread_self (), cpuset_size (set), set)
+ == 0)
+ {
+ cpuid_t i;
+
+ for (i = 0;; i++)
+ {
+ int ret = cpuset_isset (i, set);
+ if (ret < 0)
+ break;
+ if (ret > 0)
+ count++;
+ }
+ }
+ cpuset_destroy (set);
+ if (count > 0)
+ return count;
+ }
}
#elif HAVE_SCHED_GETAFFINITY_LIKE_GLIBC /* glibc >= 2.3.4 */
{
- cpu_set_t set;
+ cpu_set_t set;
- if (sched_getaffinity (0, sizeof (set), &set) == 0)
- {
- unsigned long count;
+ if (sched_getaffinity (0, sizeof (set), &set) == 0)
+ {
+ unsigned long count;
# ifdef CPU_COUNT
- /* glibc >= 2.6 has the CPU_COUNT macro. */
- count = CPU_COUNT (&set);
+ /* glibc >= 2.6 has the CPU_COUNT macro. */
+ count = CPU_COUNT (&set);
# else
- size_t i;
+ size_t i;
- count = 0;
- for (i = 0; i < CPU_SETSIZE; i++)
- if (CPU_ISSET (i, &set))
- count++;
+ count = 0;
+ for (i = 0; i < CPU_SETSIZE; i++)
+ if (CPU_ISSET (i, &set))
+ count++;
# endif
- if (count > 0)
- return count;
- }
+ if (count > 0)
+ return count;
+ }
}
#elif HAVE_SCHED_GETAFFINITY_NP /* NetBSD >= 5 */
{
- cpuset_t *set;
-
- set = cpuset_create ();
- if (set != NULL)
- {
- unsigned long count = 0;
-
- if (sched_getaffinity_np (getpid (), cpuset_size (set), set) == 0)
- {
- cpuid_t i;
-
- for (i = 0;; i++)
- {
- int ret = cpuset_isset (i, set);
- if (ret < 0)
- break;
- if (ret > 0)
- count++;
- }
- }
- cpuset_destroy (set);
- if (count > 0)
- return count;
- }
+ cpuset_t *set;
+
+ set = cpuset_create ();
+ if (set != NULL)
+ {
+ unsigned long count = 0;
+
+ if (sched_getaffinity_np (getpid (), cpuset_size (set), set) == 0)
+ {
+ cpuid_t i;
+
+ for (i = 0;; i++)
+ {
+ int ret = cpuset_isset (i, set);
+ if (ret < 0)
+ break;
+ if (ret > 0)
+ count++;
+ }
+ }
+ cpuset_destroy (set);
+ if (count > 0)
+ return count;
+ }
}
#endif
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
{ /* This works on native Windows platforms. */
- DWORD_PTR process_mask;
- DWORD_PTR system_mask;
-
- if (GetProcessAffinityMask (GetCurrentProcess (),
- &process_mask, &system_mask))
- {
- DWORD_PTR mask = process_mask;
- unsigned long count = 0;
-
- for (; mask != 0; mask = mask >> 1)
- if (mask & 1)
- count++;
- if (count > 0)
- return count;
- }
+ DWORD_PTR process_mask;
+ DWORD_PTR system_mask;
+
+ if (GetProcessAffinityMask (GetCurrentProcess (),
+ &process_mask, &system_mask))
+ {
+ DWORD_PTR mask = process_mask;
+ unsigned long count = 0;
+
+ for (; mask != 0; mask = mask >> 1)
+ if (mask & 1)
+ count++;
+ if (count > 0)
+ return count;
+ }
}
#endif
#if defined _SC_NPROCESSORS_ONLN
{ /* This works on glibc, MacOS X 10.5, FreeBSD, AIX, OSF/1, Solaris,
- Cygwin, Haiku. */
- long int nprocs = sysconf (_SC_NPROCESSORS_ONLN);
- if (nprocs > 0)
- return nprocs;
+ Cygwin, Haiku. */
+ long int nprocs = sysconf (_SC_NPROCESSORS_ONLN);
+ if (nprocs > 0)
+ return nprocs;
}
#endif
}
{
#if defined _SC_NPROCESSORS_CONF
{ /* This works on glibc, MacOS X 10.5, FreeBSD, AIX, OSF/1, Solaris,
- Cygwin, Haiku. */
- long int nprocs = sysconf (_SC_NPROCESSORS_CONF);
- if (nprocs > 0)
- return nprocs;
+ Cygwin, Haiku. */
+ long int nprocs = sysconf (_SC_NPROCESSORS_CONF);
+ if (nprocs > 0)
+ return nprocs;
}
#endif
}
struct pst_dynamic psd;
if (pstat_getdynamic (&psd, sizeof psd, 1, 0) >= 0)
{
- /* The field psd_proc_cnt contains the number of active processors.
- In newer releases of HP-UX 11, the field psd_max_proc_cnt includes
- deactivated processors. */
- if (query == NPROC_CURRENT)
- {
- if (psd.psd_proc_cnt > 0)
- return psd.psd_proc_cnt;
- }
- else
- {
- if (psd.psd_max_proc_cnt > 0)
- return psd.psd_max_proc_cnt;
- }
+ /* The field psd_proc_cnt contains the number of active processors.
+ In newer releases of HP-UX 11, the field psd_max_proc_cnt includes
+ deactivated processors. */
+ if (query == NPROC_CURRENT)
+ {
+ if (psd.psd_proc_cnt > 0)
+ return psd.psd_proc_cnt;
+ }
+ else
+ {
+ if (psd.psd_max_proc_cnt > 0)
+ return psd.psd_max_proc_cnt;
+ }
}
}
#endif
processes. */
int nprocs =
sysmp (query == NPROC_CURRENT && getpid () != 0
- ? MP_NAPROCS
- : MP_NPROCS);
+ ? MP_NAPROCS
+ : MP_NPROCS);
if (nprocs > 0)
return nprocs;
}
static int mib[2] = { CTL_HW, HW_NCPU };
if (sysctl (mib, ARRAY_SIZE (mib), &nprocs, &len, NULL, 0) == 0
- && len == sizeof (nprocs)
- && 0 < nprocs)
+ && len == sizeof (nprocs)
+ && 0 < nprocs)
return nprocs;
}
#endif
projects / gnulib.git / blobdiff