V8 API Reference, 7.2.502.16 (for Deno 0.2.4)
memory-tracing.h
1 // Copyright 2017 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef V8_WASM_MEMORY_TRACING_H_
6 #define V8_WASM_MEMORY_TRACING_H_
7 
8 #include <cstdint>
9 
10 #include "src/machine-type.h"
11 #include "src/wasm/wasm-tier.h"
12 
13 namespace v8 {
14 namespace internal {
15 namespace wasm {
16 
17 // This struct is create in generated code, hence use low-level types.
19  uint32_t address;
20  uint8_t is_store; // 0 or 1
21  uint8_t mem_rep;
22  static_assert(
23  std::is_same<decltype(mem_rep),
24  std::underlying_type<MachineRepresentation>::type>::value,
25  "MachineRepresentation uses uint8_t");
26 
27  MemoryTracingInfo(uint32_t addr, bool is_store, MachineRepresentation rep)
28  : address(addr), is_store(is_store), mem_rep(static_cast<uint8_t>(rep)) {}
29 };
30 
31 // Callback for tracing a memory operation for debugging.
32 // Triggered by --wasm-trace-memory.
33 void TraceMemoryOperation(ExecutionTier, const MemoryTracingInfo* info,
34  int func_index, int position, uint8_t* mem_start);
35 
36 } // namespace wasm
37 } // namespace internal
38 } // namespace v8
39 
40 #endif // V8_WASM_MEMORY_TRACING_H_
Definition: libplatform.h:13