330d8983d2
In a nutshell, this moves our libomptarget code to populate the offload subproject. With this commit, users need to enable the new LLVM/Offload subproject as a runtime in their cmake configuration. No further changes are expected for downstream code. Tests and other components still depend on OpenMP and have also not been renamed. The results below are for a build in which OpenMP and Offload are enabled runtimes. In addition to the pure `git mv`, we needed to adjust some CMake files. Nothing is intended to change semantics. ``` ninja check-offload ``` Works with the X86 and AMDGPU offload tests ``` ninja check-openmp ``` Still works but doesn't build offload tests anymore. ``` ls install/lib ``` Shows all expected libraries, incl. - `libomptarget.devicertl.a` - `libomptarget-nvptx-sm_90.bc` - `libomptarget.rtl.amdgpu.so` -> `libomptarget.rtl.amdgpu.so.18git` - `libomptarget.so` -> `libomptarget.so.18git` Fixes: https://github.com/llvm/llvm-project/issues/75124 --------- Co-authored-by: Saiyedul Islam <Saiyedul.Islam@amd.com>
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
//===-- Utils/ExponentialBackoff.h - Heuristic helper class ------*- C++ -*===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Implement exponential backoff counting.
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// Linearly increments until given maximum, exponentially decrements based on
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// given backoff factor.
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//
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//===----------------------------------------------------------------------===//
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#ifndef OMPTARGET_UTILS_EXPONENTIAL_BACKOFF_H
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#define OMPTARGET_UTILS_EXPONENTIAL_BACKOFF_H
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#include <cassert>
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#include <cmath>
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#include <cstdint>
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namespace utils {
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class ExponentialBackoff {
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int64_t Count = 0;
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const int64_t MaxCount = 0;
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const int64_t CountThreshold = 0;
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const double BackoffFactor = 0;
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public:
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ExponentialBackoff(int64_t MaxCount, int64_t CountThreshold,
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double BackoffFactor)
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: MaxCount(MaxCount), CountThreshold(CountThreshold),
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BackoffFactor(BackoffFactor) {
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assert(MaxCount >= 0 &&
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"ExponentialBackoff: maximum count value should be non-negative");
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assert(CountThreshold >= 0 &&
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"ExponentialBackoff: count threshold value should be non-negative");
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assert(BackoffFactor >= 0 && BackoffFactor < 1 &&
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"ExponentialBackoff: backoff factor should be in [0, 1) interval");
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}
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void increment() { Count = std::min(Count + 1, MaxCount); }
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void decrement() { Count *= BackoffFactor; }
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bool isAboveThreshold() const { return Count > CountThreshold; }
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};
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} // namespace utils
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#endif // OMPTARGET_UTILS_EXPONENTIAL_BACKOFF_H
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