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100 lines
4.2 KiB
C++
100 lines
4.2 KiB
C++
//===-- tsan_interface_java.h -----------------------------------*- 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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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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// Interface for verification of Java or mixed Java/C++ programs.
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// The interface is intended to be used from within a JVM and notify TSan
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// about such events like Java locks and GC memory compaction.
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//
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// For plain memory accesses and function entry/exit a JVM is intended to use
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// C++ interfaces: __tsan_readN/writeN and __tsan_func_enter/exit.
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//
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// For volatile memory accesses and atomic operations JVM is intended to use
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// standard atomics API: __tsan_atomicN_load/store/etc.
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//
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// For usage examples see lit_tests/java_*.cpp
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//===----------------------------------------------------------------------===//
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#ifndef TSAN_INTERFACE_JAVA_H
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#define TSAN_INTERFACE_JAVA_H
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#ifndef INTERFACE_ATTRIBUTE
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# define INTERFACE_ATTRIBUTE __attribute__((visibility("default")))
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned long jptr;
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// Must be called before any other callback from Java.
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void __tsan_java_init(jptr heap_begin, jptr heap_size) INTERFACE_ATTRIBUTE;
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// Must be called when the application exits.
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// Not necessary the last callback (concurrently running threads are OK).
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// Returns exit status or 0 if tsan does not want to override it.
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int __tsan_java_fini() INTERFACE_ATTRIBUTE;
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// Callback for memory allocations.
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// May be omitted for allocations that are not subject to data races
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// nor contain synchronization objects (e.g. String).
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void __tsan_java_alloc(jptr ptr, jptr size) INTERFACE_ATTRIBUTE;
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// Callback for memory free.
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// Can be aggregated for several objects (preferably).
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void __tsan_java_free(jptr ptr, jptr size) INTERFACE_ATTRIBUTE;
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// Callback for memory move by GC.
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// Can be aggregated for several objects (preferably).
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// The ranges can overlap.
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void __tsan_java_move(jptr src, jptr dst, jptr size) INTERFACE_ATTRIBUTE;
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// This function must be called on the finalizer thread
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// before executing a batch of finalizers.
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// It ensures necessary synchronization between
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// java object creation and finalization.
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void __tsan_java_finalize() INTERFACE_ATTRIBUTE;
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// Finds the first allocated memory block in the [*from_ptr, to) range, saves
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// its address in *from_ptr and returns its size. Returns 0 if there are no
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// allocated memory blocks in the range.
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jptr __tsan_java_find(jptr *from_ptr, jptr to) INTERFACE_ATTRIBUTE;
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// Mutex lock.
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// Addr is any unique address associated with the mutex.
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// Can be called on recursive reentry.
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void __tsan_java_mutex_lock(jptr addr) INTERFACE_ATTRIBUTE;
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// Mutex unlock.
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void __tsan_java_mutex_unlock(jptr addr) INTERFACE_ATTRIBUTE;
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// Mutex read lock.
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void __tsan_java_mutex_read_lock(jptr addr) INTERFACE_ATTRIBUTE;
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// Mutex read unlock.
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void __tsan_java_mutex_read_unlock(jptr addr) INTERFACE_ATTRIBUTE;
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// Recursive mutex lock, intended for handling of Object.wait().
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// The 'rec' value must be obtained from the previous
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// __tsan_java_mutex_unlock_rec().
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void __tsan_java_mutex_lock_rec(jptr addr, int rec) INTERFACE_ATTRIBUTE;
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// Recursive mutex unlock, intended for handling of Object.wait().
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// The return value says how many times this thread called lock()
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// w/o a pairing unlock() (i.e. how many recursive levels it unlocked).
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// It must be passed back to __tsan_java_mutex_lock_rec() to restore
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// the same recursion level.
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int __tsan_java_mutex_unlock_rec(jptr addr) INTERFACE_ATTRIBUTE;
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// Raw acquire/release primitives.
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// Can be used to establish happens-before edges on volatile/final fields,
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// in atomic operations, etc. release_store is the same as release, but it
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// breaks release sequence on addr (see C++ standard 1.10/7 for details).
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void __tsan_java_acquire(jptr addr) INTERFACE_ATTRIBUTE;
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void __tsan_java_release(jptr addr) INTERFACE_ATTRIBUTE;
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void __tsan_java_release_store(jptr addr) INTERFACE_ATTRIBUTE;
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#undef INTERFACE_ATTRIBUTE
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#endif // #ifndef TSAN_INTERFACE_JAVA_H
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