| 1 | //===- Configuration.cpp - OpenMP device configuration interface -- 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 | // This file contains the data object of the constant device environment and the |
|---|
| 10 | // query API. |
|---|
| 11 | // |
|---|
| 12 | //===----------------------------------------------------------------------===// |
|---|
| 13 | |
|---|
| 14 | #include "Configuration.h" |
|---|
| 15 | #include "DeviceTypes.h" |
|---|
| 16 | #include "State.h" |
|---|
| 17 | |
|---|
| 18 | using namespace ompx; |
|---|
| 19 | |
|---|
| 20 | // Weak definitions will be overridden by CGOpenmpRuntimeGPU if enabled. |
|---|
| 21 | [[gnu::weak]] extern const uint32_t __omp_rtl_debug_kind = 0; |
|---|
| 22 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_no_thread_state = 0; |
|---|
| 23 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_no_nested_parallelism = 0; |
|---|
| 24 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_threads_oversubscription = |
|---|
| 25 | 0; |
|---|
| 26 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_teams_oversubscription = 0; |
|---|
| 27 | |
|---|
| 28 | // This variable should be visible to the plugin so we override the default |
|---|
| 29 | // hidden visibility. |
|---|
| 30 | [[gnu::used, gnu::retain, gnu::weak, |
|---|
| 31 | gnu::visibility( |
|---|
| 32 | "protected" )]] Constant<DeviceEnvironmentTy> __omp_rtl_device_environment; |
|---|
| 33 | |
|---|
| 34 | uint32_t config::getAssumeTeamsOversubscription() { |
|---|
| 35 | return __omp_rtl_assume_teams_oversubscription; |
|---|
| 36 | } |
|---|
| 37 | |
|---|
| 38 | uint32_t config::getAssumeThreadsOversubscription() { |
|---|
| 39 | return __omp_rtl_assume_threads_oversubscription; |
|---|
| 40 | } |
|---|
| 41 | |
|---|
| 42 | uint32_t config::getDebugKind() { |
|---|
| 43 | return __omp_rtl_debug_kind & __omp_rtl_device_environment.DeviceDebugKind; |
|---|
| 44 | } |
|---|
| 45 | |
|---|
| 46 | uint32_t config::getNumDevices() { |
|---|
| 47 | return __omp_rtl_device_environment.NumDevices; |
|---|
| 48 | } |
|---|
| 49 | |
|---|
| 50 | uint32_t config::getDeviceNum() { |
|---|
| 51 | return __omp_rtl_device_environment.DeviceNum; |
|---|
| 52 | } |
|---|
| 53 | |
|---|
| 54 | uint64_t config::getDynamicMemorySize() { |
|---|
| 55 | return __omp_rtl_device_environment.DynamicMemSize; |
|---|
| 56 | } |
|---|
| 57 | |
|---|
| 58 | uint64_t config::getClockFrequency() { |
|---|
| 59 | return __omp_rtl_device_environment.ClockFrequency; |
|---|
| 60 | } |
|---|
| 61 | |
|---|
| 62 | void *config::getIndirectCallTablePtr() { |
|---|
| 63 | return reinterpret_cast<void *>( |
|---|
| 64 | __omp_rtl_device_environment.IndirectCallTable); |
|---|
| 65 | } |
|---|
| 66 | |
|---|
| 67 | uint64_t config::getHardwareParallelism() { |
|---|
| 68 | return __omp_rtl_device_environment.HardwareParallelism; |
|---|
| 69 | } |
|---|
| 70 | |
|---|
| 71 | uint64_t config::getIndirectCallTableSize() { |
|---|
| 72 | return __omp_rtl_device_environment.IndirectCallTableSize; |
|---|
| 73 | } |
|---|
| 74 | |
|---|
| 75 | bool config::isDebugMode(DeviceDebugKind Kind) { |
|---|
| 76 | return config::getDebugKind() & uint32_t(Kind); |
|---|
| 77 | } |
|---|
| 78 | |
|---|
| 79 | bool config::mayUseThreadStates() { return !__omp_rtl_assume_no_thread_state; } |
|---|
| 80 | |
|---|
| 81 | bool config::mayUseNestedParallelism() { |
|---|
| 82 | if (__omp_rtl_assume_no_nested_parallelism) |
|---|
| 83 | return false; |
|---|
| 84 | return state::getKernelEnvironment().Configuration.MayUseNestedParallelism; |
|---|
| 85 | } |
|---|
| 86 | |
|---|
