mirror of git://gcc.gnu.org/git/gcc.git
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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Copyright (c) 2014-2016 Intel Corporation. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "offload_orsl.h"
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#include <stdlib.h>
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#include "offload_host.h"
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#include "orsl-lite/include/orsl-lite.h"
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namespace ORSL {
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static bool is_enabled = false;
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static const ORSLTag my_tag = (const ORSLTag) "Offload";
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void init()
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{
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const char *env_var = getenv("OFFLOAD_ENABLE_ORSL");
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if (env_var != 0 && *env_var != '\0') {
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int64_t new_val;
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if (__offload_parse_int_string(env_var, new_val)) {
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is_enabled = new_val;
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}
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else {
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LIBOFFLOAD_ERROR(c_invalid_env_var_int_value,
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"OFFLOAD_ENABLE_ORSL");
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}
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}
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if (is_enabled) {
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OFFLOAD_DEBUG_TRACE(2, "ORSL is enabled\n");
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}
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else {
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OFFLOAD_DEBUG_TRACE(2, "ORSL is disabled\n");
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}
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}
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bool reserve(int device)
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{
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if (is_enabled) {
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int pnum = mic_engines[device].get_physical_index();
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ORSLBusySet bset;
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bset.type = BUSY_SET_FULL;
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if (ORSLReserve(1, &pnum, &bset, my_tag) != 0) {
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return false;
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}
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}
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return true;
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}
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bool try_reserve(int device)
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{
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if (is_enabled) {
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int pnum = mic_engines[device].get_physical_index();
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ORSLBusySet bset;
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bset.type = BUSY_SET_FULL;
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if (ORSLTryReserve(1, &pnum, &bset, my_tag) != 0) {
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return false;
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}
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}
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return true;
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}
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void release(int device)
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{
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if (is_enabled) {
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int pnum = mic_engines[device].get_physical_index();
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ORSLBusySet bset;
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bset.type = BUSY_SET_FULL;
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if (ORSLRelease(1, &pnum, &bset, my_tag) != 0) {
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// should never get here
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}
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}
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}
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} // namespace ORSL
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