258 lines
8 KiB
C++
258 lines
8 KiB
C++
//===-- tsan_interface_java.cpp -------------------------------------------===//
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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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//===----------------------------------------------------------------------===//
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#include "tsan_interface_java.h"
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#include "tsan_rtl.h"
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#include "sanitizer_common/sanitizer_internal_defs.h"
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_placement_new.h"
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#include "sanitizer_common/sanitizer_stacktrace.h"
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#include "sanitizer_common/sanitizer_procmaps.h"
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using namespace __tsan;
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const jptr kHeapAlignment = 8;
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namespace __tsan {
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struct JavaContext {
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const uptr heap_begin;
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const uptr heap_size;
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JavaContext(jptr heap_begin, jptr heap_size)
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: heap_begin(heap_begin)
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, heap_size(heap_size) {
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}
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};
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static u64 jctx_buf[sizeof(JavaContext) / sizeof(u64) + 1];
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static JavaContext *jctx;
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MBlock *JavaHeapBlock(uptr addr, uptr *start) {
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if (!jctx || addr < jctx->heap_begin ||
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addr >= jctx->heap_begin + jctx->heap_size)
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return nullptr;
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for (uptr p = RoundDown(addr, kMetaShadowCell); p >= jctx->heap_begin;
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p -= kMetaShadowCell) {
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MBlock *b = ctx->metamap.GetBlock(p);
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if (!b)
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continue;
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if (p + b->siz <= addr)
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return nullptr;
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*start = p;
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return b;
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}
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return nullptr;
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}
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} // namespace __tsan
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#define JAVA_FUNC_ENTER(func) \
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ThreadState *thr = cur_thread(); \
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(void)thr;
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void __tsan_java_init(jptr heap_begin, jptr heap_size) {
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JAVA_FUNC_ENTER(__tsan_java_init);
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Initialize(thr);
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DPrintf("#%d: java_init(0x%zx, 0x%zx)\n", thr->tid, heap_begin, heap_size);
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DCHECK_EQ(jctx, 0);
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DCHECK_GT(heap_begin, 0);
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DCHECK_GT(heap_size, 0);
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DCHECK_EQ(heap_begin % kHeapAlignment, 0);
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DCHECK_EQ(heap_size % kHeapAlignment, 0);
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DCHECK_LT(heap_begin, heap_begin + heap_size);
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jctx = new(jctx_buf) JavaContext(heap_begin, heap_size);
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}
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int __tsan_java_fini() {
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JAVA_FUNC_ENTER(__tsan_java_fini);
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DPrintf("#%d: java_fini()\n", thr->tid);
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DCHECK_NE(jctx, 0);
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// FIXME(dvyukov): this does not call atexit() callbacks.
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int status = Finalize(thr);
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DPrintf("#%d: java_fini() = %d\n", thr->tid, status);
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return status;
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}
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void __tsan_java_alloc(jptr ptr, jptr size) {
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JAVA_FUNC_ENTER(__tsan_java_alloc);
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DPrintf("#%d: java_alloc(0x%zx, 0x%zx)\n", thr->tid, ptr, size);
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DCHECK_NE(jctx, 0);
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DCHECK_NE(size, 0);
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DCHECK_EQ(ptr % kHeapAlignment, 0);
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DCHECK_EQ(size % kHeapAlignment, 0);
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DCHECK_GE(ptr, jctx->heap_begin);
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DCHECK_LE(ptr + size, jctx->heap_begin + jctx->heap_size);
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OnUserAlloc(thr, 0, ptr, size, false);
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}
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void __tsan_java_free(jptr ptr, jptr size) {
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JAVA_FUNC_ENTER(__tsan_java_free);
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DPrintf("#%d: java_free(0x%zx, 0x%zx)\n", thr->tid, ptr, size);
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DCHECK_NE(jctx, 0);
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DCHECK_NE(size, 0);
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DCHECK_EQ(ptr % kHeapAlignment, 0);
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DCHECK_EQ(size % kHeapAlignment, 0);
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DCHECK_GE(ptr, jctx->heap_begin);
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DCHECK_LE(ptr + size, jctx->heap_begin + jctx->heap_size);
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ctx->metamap.FreeRange(thr->proc(), ptr, size);
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}
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void __tsan_java_move(jptr src, jptr dst, jptr size) {
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JAVA_FUNC_ENTER(__tsan_java_move);
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DPrintf("#%d: java_move(0x%zx, 0x%zx, 0x%zx)\n", thr->tid, src, dst, size);
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DCHECK_NE(jctx, 0);
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DCHECK_NE(size, 0);
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DCHECK_EQ(src % kHeapAlignment, 0);
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DCHECK_EQ(dst % kHeapAlignment, 0);
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DCHECK_EQ(size % kHeapAlignment, 0);
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DCHECK_GE(src, jctx->heap_begin);
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DCHECK_LE(src + size, jctx->heap_begin + jctx->heap_size);
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DCHECK_GE(dst, jctx->heap_begin);
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DCHECK_LE(dst + size, jctx->heap_begin + jctx->heap_size);
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DCHECK_NE(dst, src);
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DCHECK_NE(size, 0);
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// Assuming it's not running concurrently with threads that do
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// memory accesses and mutex operations (stop-the-world phase).
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ctx->metamap.MoveMemory(src, dst, size);
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// Clear the destination shadow range.
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// We used to move shadow from src to dst, but the trace format does not
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// support that anymore as it contains addresses of accesses.
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RawShadow *d = MemToShadow(dst);
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RawShadow *dend = MemToShadow(dst + size);
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internal_memset(d, 0, (dend - d) * sizeof(*d));
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}
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jptr __tsan_java_find(jptr *from_ptr, jptr to) {
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JAVA_FUNC_ENTER(__tsan_java_find);
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DPrintf("#%d: java_find(&0x%zx, 0x%zx)\n", thr->tid, *from_ptr, to);
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DCHECK_EQ((*from_ptr) % kHeapAlignment, 0);
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DCHECK_EQ(to % kHeapAlignment, 0);
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DCHECK_GE(*from_ptr, jctx->heap_begin);
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DCHECK_LE(to, jctx->heap_begin + jctx->heap_size);
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for (uptr from = *from_ptr; from < to; from += kHeapAlignment) {
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MBlock *b = ctx->metamap.GetBlock(from);
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if (b) {
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*from_ptr = from;
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return b->siz;
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}
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}
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return 0;
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}
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void __tsan_java_finalize() {
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JAVA_FUNC_ENTER(__tsan_java_finalize);
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DPrintf("#%d: java_finalize()\n", thr->tid);
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AcquireGlobal(thr);
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}
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void __tsan_java_mutex_lock(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_mutex_lock);
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DPrintf("#%d: java_mutex_lock(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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MutexPostLock(thr, 0, addr,
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MutexFlagLinkerInit | MutexFlagWriteReentrant |
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MutexFlagDoPreLockOnPostLock);
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}
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void __tsan_java_mutex_unlock(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_mutex_unlock);
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DPrintf("#%d: java_mutex_unlock(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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MutexUnlock(thr, 0, addr);
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}
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void __tsan_java_mutex_read_lock(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_mutex_read_lock);
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DPrintf("#%d: java_mutex_read_lock(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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MutexPostReadLock(thr, 0, addr,
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MutexFlagLinkerInit | MutexFlagWriteReentrant |
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MutexFlagDoPreLockOnPostLock);
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}
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void __tsan_java_mutex_read_unlock(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_mutex_read_unlock);
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DPrintf("#%d: java_mutex_read_unlock(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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MutexReadUnlock(thr, 0, addr);
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}
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void __tsan_java_mutex_lock_rec(jptr addr, int rec) {
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JAVA_FUNC_ENTER(__tsan_java_mutex_lock_rec);
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DPrintf("#%d: java_mutex_lock_rec(0x%zx, %d)\n", thr->tid, addr, rec);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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DCHECK_GT(rec, 0);
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MutexPostLock(thr, 0, addr,
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MutexFlagLinkerInit | MutexFlagWriteReentrant |
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MutexFlagDoPreLockOnPostLock | MutexFlagRecursiveLock,
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rec);
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}
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int __tsan_java_mutex_unlock_rec(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_mutex_unlock_rec);
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DPrintf("#%d: java_mutex_unlock_rec(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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return MutexUnlock(thr, 0, addr, MutexFlagRecursiveUnlock);
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}
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void __tsan_java_acquire(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_acquire);
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DPrintf("#%d: java_acquire(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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Acquire(thr, 0, addr);
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}
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void __tsan_java_release(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_release);
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DPrintf("#%d: java_release(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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Release(thr, 0, addr);
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}
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void __tsan_java_release_store(jptr addr) {
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JAVA_FUNC_ENTER(__tsan_java_release);
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DPrintf("#%d: java_release_store(0x%zx)\n", thr->tid, addr);
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DCHECK_NE(jctx, 0);
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DCHECK_GE(addr, jctx->heap_begin);
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DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
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ReleaseStore(thr, 0, addr);
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}
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