1 files changed, 258 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interface_java.cpp b/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interface_java.cpp
new file mode 100644
index 000000000000..7c15a1638826
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interface_java.cpp
@@ -0,0 +1,258 @@
+//===-- tsan_interface_java.cpp -------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+//===----------------------------------------------------------------------===//
+
+#include "tsan_interface_java.h"
+#include "tsan_rtl.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_placement_new.h"
+#include "sanitizer_common/sanitizer_stacktrace.h"
+#include "sanitizer_common/sanitizer_procmaps.h"
+
+using namespace __tsan;
+
+const jptr kHeapAlignment = 8;
+
+namespace __tsan {
+
+struct JavaContext {
+  const uptr heap_begin;
+  const uptr heap_size;
+
+  JavaContext(jptr heap_begin, jptr heap_size)
+      : heap_begin(heap_begin)
+      , heap_size(heap_size) {
+  }
+};
+
+static u64 jctx_buf[sizeof(JavaContext) / sizeof(u64) + 1];
+static JavaContext *jctx;
+
+MBlock *JavaHeapBlock(uptr addr, uptr *start) {
+  if (!jctx || addr < jctx->heap_begin ||
+      addr >= jctx->heap_begin + jctx->heap_size)
+    return nullptr;
+  for (uptr p = RoundDown(addr, kMetaShadowCell); p >= jctx->heap_begin;
+       p -= kMetaShadowCell) {
+    MBlock *b = ctx->metamap.GetBlock(p);
+    if (!b)
+      continue;
+    if (p + b->siz <= addr)
+      return nullptr;
+    *start = p;
+    return b;
+  }
+  return nullptr;
+}
+
+}  // namespace __tsan
+
+#define JAVA_FUNC_ENTER(func)      \
+  ThreadState *thr = cur_thread(); \
+  (void)thr;
+
+void __tsan_java_init(jptr heap_begin, jptr heap_size) {
+  JAVA_FUNC_ENTER(__tsan_java_init);
+  Initialize(thr);
+  DPrintf("#%d: java_init(0x%zx, 0x%zx)\n", thr->tid, heap_begin, heap_size);
+  DCHECK_EQ(jctx, 0);
+  DCHECK_GT(heap_begin, 0);
+  DCHECK_GT(heap_size, 0);
+  DCHECK_EQ(heap_begin % kHeapAlignment, 0);
+  DCHECK_EQ(heap_size % kHeapAlignment, 0);
+  DCHECK_LT(heap_begin, heap_begin + heap_size);
+  jctx = new(jctx_buf) JavaContext(heap_begin, heap_size);
+}
+
+int  __tsan_java_fini() {
+  JAVA_FUNC_ENTER(__tsan_java_fini);
+  DPrintf("#%d: java_fini()\n", thr->tid);
+  DCHECK_NE(jctx, 0);
+  // FIXME(dvyukov): this does not call atexit() callbacks.
+  int status = Finalize(thr);
+  DPrintf("#%d: java_fini() = %d\n", thr->tid, status);
+  return status;
+}
+
+void __tsan_java_alloc(jptr ptr, jptr size) {
+  JAVA_FUNC_ENTER(__tsan_java_alloc);
+  DPrintf("#%d: java_alloc(0x%zx, 0x%zx)\n", thr->tid, ptr, size);
+  DCHECK_NE(jctx, 0);
+  DCHECK_NE(size, 0);
+  DCHECK_EQ(ptr % kHeapAlignment, 0);
+  DCHECK_EQ(size % kHeapAlignment, 0);
+  DCHECK_GE(ptr, jctx->heap_begin);
+  DCHECK_LE(ptr + size, jctx->heap_begin + jctx->heap_size);
+
+  OnUserAlloc(thr, 0, ptr, size, false);
+}
+
+void __tsan_java_free(jptr ptr, jptr size) {
+  JAVA_FUNC_ENTER(__tsan_java_free);
+  DPrintf("#%d: java_free(0x%zx, 0x%zx)\n", thr->tid, ptr, size);
+  DCHECK_NE(jctx, 0);
+  DCHECK_NE(size, 0);
+  DCHECK_EQ(ptr % kHeapAlignment, 0);
+  DCHECK_EQ(size % kHeapAlignment, 0);
+  DCHECK_GE(ptr, jctx->heap_begin);
+  DCHECK_LE(ptr + size, jctx->heap_begin + jctx->heap_size);
+
+  ctx->metamap.FreeRange(thr->proc(), ptr, size, false);
+}
+
+void __tsan_java_move(jptr src, jptr dst, jptr size) {
+  JAVA_FUNC_ENTER(__tsan_java_move);
+  DPrintf("#%d: java_move(0x%zx, 0x%zx, 0x%zx)\n", thr->tid, src, dst, size);
+  DCHECK_NE(jctx, 0);
+  DCHECK_NE(size, 0);
+  DCHECK_EQ(src % kHeapAlignment, 0);
+  DCHECK_EQ(dst % kHeapAlignment, 0);
+  DCHECK_EQ(size % kHeapAlignment, 0);
+  DCHECK_GE(src, jctx->heap_begin);
+  DCHECK_LE(src + size, jctx->heap_begin + jctx->heap_size);
+  DCHECK_GE(dst, jctx->heap_begin);
+  DCHECK_LE(dst + size, jctx->heap_begin + jctx->heap_size);
+  DCHECK_NE(dst, src);
+  DCHECK_NE(size, 0);
+
+  // Assuming it's not running concurrently with threads that do
+  // memory accesses and mutex operations (stop-the-world phase).
+  ctx->metamap.MoveMemory(src, dst, size);
+
+  // Clear the destination shadow range.
+  // We used to move shadow from src to dst, but the trace format does not
+  // support that anymore as it contains addresses of accesses.
+  RawShadow *d = MemToShadow(dst);
+  RawShadow *dend = MemToShadow(dst + size);
+  ShadowSet(d, dend, Shadow::kEmpty);
+}
+
+jptr __tsan_java_find(jptr *from_ptr, jptr to) {
+  JAVA_FUNC_ENTER(__tsan_java_find);
+  DPrintf("#%d: java_find(&0x%zx, 0x%zx)\n", thr->tid, *from_ptr, to);
+  DCHECK_EQ((*from_ptr) % kHeapAlignment, 0);
+  DCHECK_EQ(to % kHeapAlignment, 0);
+  DCHECK_GE(*from_ptr, jctx->heap_begin);
+  DCHECK_LE(to, jctx->heap_begin + jctx->heap_size);
+  for (uptr from = *from_ptr; from < to; from += kHeapAlignment) {
+    MBlock *b = ctx->metamap.GetBlock(from);
+    if (b) {
+      *from_ptr = from;
+      return b->siz;
+    }
+  }
+  return 0;
+}
+
+void __tsan_java_finalize() {
+  JAVA_FUNC_ENTER(__tsan_java_finalize);
+  DPrintf("#%d: java_finalize()\n", thr->tid);
+  AcquireGlobal(thr);
+}
+
+void __tsan_java_mutex_lock(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_mutex_lock);
+  DPrintf("#%d: java_mutex_lock(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  MutexPostLock(thr, 0, addr,
+                MutexFlagLinkerInit | MutexFlagWriteReentrant |
+                    MutexFlagDoPreLockOnPostLock);
+}
+
+void __tsan_java_mutex_unlock(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_mutex_unlock);
+  DPrintf("#%d: java_mutex_unlock(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  MutexUnlock(thr, 0, addr);
+}
+
+void __tsan_java_mutex_read_lock(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_mutex_read_lock);
+  DPrintf("#%d: java_mutex_read_lock(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  MutexPostReadLock(thr, 0, addr,
+                    MutexFlagLinkerInit | MutexFlagWriteReentrant |
+                        MutexFlagDoPreLockOnPostLock);
+}
+
+void __tsan_java_mutex_read_unlock(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_mutex_read_unlock);
+  DPrintf("#%d: java_mutex_read_unlock(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  MutexReadUnlock(thr, 0, addr);
+}
+
+void __tsan_java_mutex_lock_rec(jptr addr, int rec) {
+  JAVA_FUNC_ENTER(__tsan_java_mutex_lock_rec);
+  DPrintf("#%d: java_mutex_lock_rec(0x%zx, %d)\n", thr->tid, addr, rec);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+  DCHECK_GT(rec, 0);
+
+  MutexPostLock(thr, 0, addr,
+                MutexFlagLinkerInit | MutexFlagWriteReentrant |
+                    MutexFlagDoPreLockOnPostLock | MutexFlagRecursiveLock,
+                rec);
+}
+
+int __tsan_java_mutex_unlock_rec(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_mutex_unlock_rec);
+  DPrintf("#%d: java_mutex_unlock_rec(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  return MutexUnlock(thr, 0, addr, MutexFlagRecursiveUnlock);
+}
+
+void __tsan_java_acquire(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_acquire);
+  DPrintf("#%d: java_acquire(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  Acquire(thr, 0, addr);
+}
+
+void __tsan_java_release(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_release);
+  DPrintf("#%d: java_release(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  Release(thr, 0, addr);
+}
+
+void __tsan_java_release_store(jptr addr) {
+  JAVA_FUNC_ENTER(__tsan_java_release);
+  DPrintf("#%d: java_release_store(0x%zx)\n", thr->tid, addr);
+  DCHECK_NE(jctx, 0);
+  DCHECK_GE(addr, jctx->heap_begin);
+  DCHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
+
+  ReleaseStore(thr, 0, addr);
+}