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| 1 | //===-- OffloadPolicy.h - Configuration of offload behavior -----*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Configuration for offload behavior, e.g., if offload is disabled, can be |
| 10 | // disabled, is mandatory, etc. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef OMPTARGET_OFFLOAD_POLICY_H |
| 15 | #define OMPTARGET_OFFLOAD_POLICY_H |
| 16 | |
| 17 | #include "PluginManager.h" |
| 18 | |
| 19 | enum kmp_target_offload_kind_t { |
| 20 | tgt_disabled = 0, |
| 21 | tgt_default = 1, |
| 22 | tgt_mandatory = 2 |
| 23 | }; |
| 24 | |
| 25 | extern "C" int __kmpc_get_target_offload(void) __attribute__((weak)); |
| 26 | |
| 27 | class OffloadPolicy { |
| 28 | |
| 29 | OffloadPolicy(PluginManager &PM) { |
| 30 | // TODO: Check for OpenMP. |
| 31 | switch ((kmp_target_offload_kind_t)__kmpc_get_target_offload()) { |
| 32 | case tgt_disabled: |
| 33 | Kind = DISABLED; |
| 34 | return; |
| 35 | case tgt_mandatory: |
| 36 | Kind = MANDATORY; |
| 37 | return; |
| 38 | default: |
| 39 | if (PM.getNumDevices()) { |
| 40 | DP("Default TARGET OFFLOAD policy is now mandatory " |
| 41 | "(devices were found)\n"); |
| 42 | Kind = MANDATORY; |
| 43 | } else { |
| 44 | DP("Default TARGET OFFLOAD policy is now disabled " |
| 45 | "(no devices were found)\n"); |
| 46 | Kind = DISABLED; |
| 47 | } |
| 48 | return; |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | public: |
| 53 | static bool isOffloadDisabled() { |
| 54 | return static_cast<kmp_target_offload_kind_t>( |
| 55 | __kmpc_get_target_offload()) == tgt_disabled; |
| 56 | } |
| 57 | |
| 58 | static const OffloadPolicy &get(PluginManager &PM) { |
| 59 | static OffloadPolicy OP(PM); |
| 60 | return OP; |
| 61 | } |
| 62 | |
| 63 | enum OffloadPolicyKind { DISABLED, MANDATORY }; |
| 64 | |
| 65 | OffloadPolicyKind Kind = MANDATORY; |
| 66 | }; |
| 67 | |
| 68 | #endif // OMPTARGET_OFFLOAD_POLICY_H |
| 69 |
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