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Side by Side Diff: src/wasm/wasm-module.h

Issue 2137993003: [wasm] Adding feature to JIT a wasm function at runtime and hook up the compiled code into the indi… (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Changed casting Created 4 years, 5 months ago
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1 // Copyright 2015 the V8 project authors. All rights reserved. 1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_WASM_MODULE_H_ 5 #ifndef V8_WASM_MODULE_H_
6 #define V8_WASM_MODULE_H_ 6 #define V8_WASM_MODULE_H_
7 7
8 #include "src/api.h" 8 #include "src/api.h"
9 #include "src/handles.h" 9 #include "src/handles.h"
10 #include "src/wasm/wasm-opcodes.h" 10 #include "src/wasm/wasm-opcodes.h"
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180 std::vector<WasmExport> export_table; // export table. 180 std::vector<WasmExport> export_table; // export table.
181 // We store the semaphore here to extend its lifetime. In <libc-2.21, which we 181 // We store the semaphore here to extend its lifetime. In <libc-2.21, which we
182 // use on the try bots, semaphore::Wait() can return while some compilation 182 // use on the try bots, semaphore::Wait() can return while some compilation
183 // tasks are still executing semaphore::Signal(). If the semaphore is cleaned 183 // tasks are still executing semaphore::Signal(). If the semaphore is cleaned
184 // up right after semaphore::Wait() returns, then this can cause an 184 // up right after semaphore::Wait() returns, then this can cause an
185 // invalid-semaphore error in the compilation tasks. 185 // invalid-semaphore error in the compilation tasks.
186 // TODO(wasm): Move this semaphore back to CompileInParallel when the try bots 186 // TODO(wasm): Move this semaphore back to CompileInParallel when the try bots
187 // switch to libc-2.21 or higher. 187 // switch to libc-2.21 or higher.
188 base::SmartPointer<base::Semaphore> pending_tasks; 188 base::SmartPointer<base::Semaphore> pending_tasks;
189 189
190 WasmModule(); 190 explicit WasmModule(byte* module_start = nullptr);
John 2016/07/13 19:56:59 optional: It probably does not matter, but what do
ritesht 2016/07/13 23:58:45 Done.
191 191
192 // Get a string stored in the module bytes representing a name. 192 // Get a string stored in the module bytes representing a name.
193 WasmName GetName(uint32_t offset, uint32_t length) const { 193 WasmName GetName(uint32_t offset, uint32_t length) const {
194 if (length == 0) return {"<?>", 3}; // no name. 194 if (length == 0) return {"<?>", 3}; // no name.
195 CHECK(BoundsCheck(offset, offset + length)); 195 CHECK(BoundsCheck(offset, offset + length));
196 DCHECK_GE(static_cast<int>(length), 0); 196 DCHECK_GE(static_cast<int>(length), 0);
197 return {reinterpret_cast<const char*>(module_start + offset), 197 return {reinterpret_cast<const char*>(module_start + offset),
198 static_cast<int>(length)}; 198 static_cast<int>(length)};
199 } 199 }
200 200
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377 // given encoded module. The module should have no imports. 377 // given encoded module. The module should have no imports.
378 int32_t CompileAndRunWasmModule(Isolate* isolate, const byte* module_start, 378 int32_t CompileAndRunWasmModule(Isolate* isolate, const byte* module_start,
379 const byte* module_end, bool asm_js = false); 379 const byte* module_end, bool asm_js = false);
380 380
381 } // namespace testing 381 } // namespace testing
382 } // namespace wasm 382 } // namespace wasm
383 } // namespace internal 383 } // namespace internal
384 } // namespace v8 384 } // namespace v8
385 385
386 #endif // V8_WASM_MODULE_H_ 386 #endif // V8_WASM_MODULE_H_
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