1//===----------- rtl.cpp - Target independent OpenMP target RTL -----------===//
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// Initialization and tear down of the offload runtime.
10//
11//===----------------------------------------------------------------------===//
12
13#include "OpenMP/OMPT/Callback.h"
14#include "PluginManager.h"
15
16#include "Shared/Debug.h"
17#include "Shared/Profile.h"
18
19#ifdef OMPT_SUPPORT
20extern void llvm::omp::target::ompt::connectLibrary();
21#endif
22
23static std::mutex PluginMtx;
24static uint32_t RefCount = 0;
25
26void initRuntime() {
27 std::scoped_lock<decltype(PluginMtx)> Lock(PluginMtx);
28 Profiler::get();
29 TIMESCOPE();
30
31 if (PM == nullptr)
32 PM = new PluginManager();
33
34 RefCount++;
35 if (RefCount == 1) {
36 DP("Init offload library!\n");
37#ifdef OMPT_SUPPORT
38 // Initialize OMPT first
39 llvm::omp::target::ompt::connectLibrary();
40#endif
41
42 PM->init();
43 PM->registerDelayedLibraries();
44 }
45}
46
47void deinitRuntime() {
48 std::scoped_lock<decltype(PluginMtx)> Lock(PluginMtx);
49 assert(PM && "Runtime not initialized");
50
51 if (RefCount == 1) {
52 DP("Deinit offload library!\n");
53 PM->deinit();
54 delete PM;
55 PM = nullptr;
56 }
57
58 RefCount--;
59}
60

source code of offload/libomptarget/OffloadRTL.cpp