/****** shepherd_binding/create_binding_env_linux() ****************************
* NAME
* create_binding_env_linux() -- Creates SGE_BINDING env variable.
*
* SYNOPSIS
* bool create_binding_env_linux(const int* proc_id, const int amount)
*
* FUNCTION
* Creates the SGE_BINDING environment variable on Linux operating system.
* This environment variable contains a space separated list of Linux
* internal processor ids given as input parameter.
*
* INPUTS
* const int* proc_id - List of processor ids.
* const int amount - Length of processor id list.
*
* RESULT
* bool - true when SGE_BINDING env var could be generated false if not
*
* NOTES
* MT-NOTE: create_binding_env_linux() is MT safe
*
*******************************************************************************/
bool create_binding_env_linux(const int* proc_id, const int amount)
{
bool retval = true;
dstring sge_binding = DSTRING_INIT;
dstring proc = DSTRING_INIT;
int i;
for (i = 0; i < amount; i++) {
sge_dstring_clear(&proc);
/* DG TODO env ends with whitespace char */
sge_dstring_sprintf(&proc, "%d ", proc_id[i]);
sge_dstring_append_dstring(&sge_binding, &proc);
}
if (sge_setenv("SGE_BINDING", sge_dstring_get_string(&sge_binding)) != 1) {
/* settting env var was not successful */
retval = false;
shepherd_trace("create_binding_env_linux: Couldn't set environment variable!");
}
sge_dstring_free(&sge_binding);
sge_dstring_free(&proc);
return retval;
}
/****** shepherd_binding/create_binding_env() ****************************
* NAME
* create_binding_env() -- Creates SGE_BINDING env variable.
*
* SYNOPSIS
* bool create_binding_env(hwloc_const_bitmap_t set)
*
* FUNCTION
* Creates the SGE_BINDING environment variable.
* This environment variable contains a space-separated list of
* internal processor ids given as input parameter.
*
* INPUTS
* hwloc_const_bitmap_t set - CPU set to use
*
* RESULT
* bool - true when SGE_BINDING env var could be generated false if not
*
* NOTES
* MT-NOTE: create_binding_env() is MT safe
*
*******************************************************************************/
static bool
create_binding_env(hwloc_const_bitmap_t set)
{
bool retval = true;
dstring sge_binding = DSTRING_INIT;
dstring proc = DSTRING_INIT;
unsigned i;
bool first = true;
hwloc_bitmap_foreach_begin(i, set)
if (first) {
first = false;
sge_dstring_sprintf(&proc, "%d", i);
} else {
sge_dstring_sprintf(&proc, " %d", i);
}
sge_dstring_append_dstring(&sge_binding, &proc);
hwloc_bitmap_foreach_end();
if (sge_setenv("SGE_BINDING", sge_dstring_get_string(&sge_binding)) != 1) {
/* settting env var was not successful */
retval = false;
shepherd_trace("create_binding_env: Couldn't set environment variable!");
}
sge_dstring_free(&sge_binding);
sge_dstring_free(&proc);
return retval;
}