105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
|
|
Copyright (c) 2014 Intel Corporation. All Rights Reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
* Neither the name of Intel Corporation nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#include "offload_orsl.h"
|
|
#include <stdlib.h>
|
|
#include "offload_host.h"
|
|
#include "orsl-lite/include/orsl-lite.h"
|
|
|
|
namespace ORSL {
|
|
|
|
static bool is_enabled = false;
|
|
static const ORSLTag my_tag = "Offload";
|
|
|
|
void init()
|
|
{
|
|
const char *env_var = getenv("OFFLOAD_ENABLE_ORSL");
|
|
if (env_var != 0 && *env_var != '\0') {
|
|
int64_t new_val;
|
|
if (__offload_parse_int_string(env_var, new_val)) {
|
|
is_enabled = new_val;
|
|
}
|
|
else {
|
|
LIBOFFLOAD_ERROR(c_invalid_env_var_int_value,
|
|
"OFFLOAD_ENABLE_ORSL");
|
|
}
|
|
}
|
|
|
|
if (is_enabled) {
|
|
OFFLOAD_DEBUG_TRACE(2, "ORSL is enabled\n");
|
|
}
|
|
else {
|
|
OFFLOAD_DEBUG_TRACE(2, "ORSL is disabled\n");
|
|
}
|
|
}
|
|
|
|
bool reserve(int device)
|
|
{
|
|
if (is_enabled) {
|
|
int pnum = mic_engines[device].get_physical_index();
|
|
ORSLBusySet bset;
|
|
|
|
bset.type = BUSY_SET_FULL;
|
|
if (ORSLReserve(1, &pnum, &bset, my_tag) != 0) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool try_reserve(int device)
|
|
{
|
|
if (is_enabled) {
|
|
int pnum = mic_engines[device].get_physical_index();
|
|
ORSLBusySet bset;
|
|
|
|
bset.type = BUSY_SET_FULL;
|
|
if (ORSLTryReserve(1, &pnum, &bset, my_tag) != 0) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void release(int device)
|
|
{
|
|
if (is_enabled) {
|
|
int pnum = mic_engines[device].get_physical_index();
|
|
ORSLBusySet bset;
|
|
|
|
bset.type = BUSY_SET_FULL;
|
|
if (ORSLRelease(1, &pnum, &bset, my_tag) != 0) {
|
|
// should never get here
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace ORSL
|