| 1 | //===- TagBreakpointManager.h - Simple breakpoint Support -------*- 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 | #ifndef MLIR_DEBUG_BREAKPOINTMANAGERS_TAGBREAKPOINTMANAGER_H |
| 10 | #define MLIR_DEBUG_BREAKPOINTMANAGERS_TAGBREAKPOINTMANAGER_H |
| 11 | |
| 12 | #include "mlir/Debug/BreakpointManager.h" |
| 13 | #include "mlir/Debug/ExecutionContext.h" |
| 14 | #include "mlir/IR/Action.h" |
| 15 | #include "llvm/ADT/MapVector.h" |
| 16 | |
| 17 | namespace mlir { |
| 18 | namespace tracing { |
| 19 | |
| 20 | /// Simple breakpoint matching an action "tag". |
| 21 | class TagBreakpoint : public BreakpointBase<TagBreakpoint> { |
| 22 | public: |
| 23 | TagBreakpoint(StringRef tag) : tag(tag) {} |
| 24 | |
| 25 | void print(raw_ostream &os) const override { os << "Tag: `"<< tag << '`'; } |
| 26 | |
| 27 | private: |
| 28 | /// A tag to associate the TagBreakpoint with. |
| 29 | std::string tag; |
| 30 | |
| 31 | /// Allow access to `tag`. |
| 32 | friend class TagBreakpointManager; |
| 33 | }; |
| 34 | |
| 35 | /// This is a manager to store a collection of breakpoints that trigger |
| 36 | /// on tags. |
| 37 | class TagBreakpointManager |
| 38 | : public BreakpointManagerBase<TagBreakpointManager> { |
| 39 | public: |
| 40 | Breakpoint *match(const Action &action) const override { |
| 41 | auto it = breakpoints.find(Key: action.getTag()); |
| 42 | if (it != breakpoints.end() && it->second->isEnabled()) |
| 43 | return it->second.get(); |
| 44 | return {}; |
| 45 | } |
| 46 | |
| 47 | /// Add a breakpoint to the manager for the given tag and return it. |
| 48 | /// If a breakpoint already exists for the given tag, return the existing |
| 49 | /// instance. |
| 50 | TagBreakpoint *addBreakpoint(StringRef tag) { |
| 51 | auto result = breakpoints.insert(KV: {tag, nullptr}); |
| 52 | auto &it = result.first; |
| 53 | if (result.second) |
| 54 | it->second = std::make_unique<TagBreakpoint>(args: tag.str()); |
| 55 | return it->second.get(); |
| 56 | } |
| 57 | |
| 58 | private: |
| 59 | llvm::StringMap<std::unique_ptr<TagBreakpoint>> breakpoints; |
| 60 | }; |
| 61 | |
| 62 | } // namespace tracing |
| 63 | } // namespace mlir |
| 64 | |
| 65 | #endif // MLIR_DEBUG_BREAKPOINTMANAGERS_TAGBREAKPOINTMANAGER_H |
| 66 |