| 1 | //===- Configuration.cpp - OpenMP device configuration interface -- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file contains the data object of the constant device environment and the |
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| 10 | // query API. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #include "Configuration.h" |
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| 15 | #include "State.h" |
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| 16 | #include "Types.h" |
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| 17 | |
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| 18 | using namespace ompx; |
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| 19 | |
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| 20 | #pragma omp begin declare target device_type(nohost) |
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| 21 | |
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| 22 | // Weak definitions will be overridden by CGOpenmpRuntimeGPU if enabled. |
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| 23 | [[gnu::weak]] extern const uint32_t __omp_rtl_debug_kind = 0; |
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| 24 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_no_thread_state = 0; |
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| 25 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_no_nested_parallelism = 0; |
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| 26 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_threads_oversubscription = |
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| 27 | 0; |
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| 28 | [[gnu::weak]] extern const uint32_t __omp_rtl_assume_teams_oversubscription = 0; |
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| 29 | |
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| 30 | // This variable should be visibile to the plugin so we override the default |
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| 31 | // hidden visibility. |
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| 32 | [[gnu::used, gnu::retain, gnu::weak, |
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| 33 | gnu::visibility("protected" )]] DeviceEnvironmentTy |
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| 34 | CONSTANT(__omp_rtl_device_environment); |
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| 35 | |
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| 36 | uint32_t config::getAssumeTeamsOversubscription() { |
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| 37 | return __omp_rtl_assume_teams_oversubscription; |
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| 38 | } |
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| 39 | |
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| 40 | uint32_t config::getAssumeThreadsOversubscription() { |
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| 41 | return __omp_rtl_assume_threads_oversubscription; |
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| 42 | } |
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| 43 | |
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| 44 | uint32_t config::getDebugKind() { |
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| 45 | return __omp_rtl_debug_kind & __omp_rtl_device_environment.DeviceDebugKind; |
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| 46 | } |
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| 47 | |
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| 48 | uint32_t config::getNumDevices() { |
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| 49 | return __omp_rtl_device_environment.NumDevices; |
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| 50 | } |
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| 51 | |
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| 52 | uint32_t config::getDeviceNum() { |
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| 53 | return __omp_rtl_device_environment.DeviceNum; |
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| 54 | } |
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| 55 | |
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| 56 | uint64_t config::getDynamicMemorySize() { |
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| 57 | return __omp_rtl_device_environment.DynamicMemSize; |
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| 58 | } |
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| 59 | |
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| 60 | uint64_t config::getClockFrequency() { |
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| 61 | return __omp_rtl_device_environment.ClockFrequency; |
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| 62 | } |
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| 63 | |
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| 64 | void *config::getIndirectCallTablePtr() { |
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| 65 | return reinterpret_cast<void *>( |
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| 66 | __omp_rtl_device_environment.IndirectCallTable); |
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| 67 | } |
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| 68 | |
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| 69 | uint64_t config::getHardwareParallelism() { |
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| 70 | return __omp_rtl_device_environment.HardwareParallelism; |
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| 71 | } |
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| 72 | |
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| 73 | uint64_t config::getIndirectCallTableSize() { |
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| 74 | return __omp_rtl_device_environment.IndirectCallTableSize; |
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| 75 | } |
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| 76 | |
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| 77 | bool config::isDebugMode(DeviceDebugKind Kind) { |
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| 78 | return config::getDebugKind() & uint32_t(Kind); |
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| 79 | } |
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| 80 | |
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| 81 | bool config::mayUseThreadStates() { return !__omp_rtl_assume_no_thread_state; } |
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| 82 | |
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| 83 | bool config::mayUseNestedParallelism() { |
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| 84 | if (__omp_rtl_assume_no_nested_parallelism) |
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| 85 | return false; |
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| 86 | return state::getKernelEnvironment().Configuration.MayUseNestedParallelism; |
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| 87 | } |
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| 88 | |
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| 89 | #pragma omp end declare target |
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| 90 | |
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