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//===-- tsan_interface_java.cc --------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//
#include "tsan_interface_java.h"
#include "tsan_rtl.h"
#include "tsan_mutex.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; // NOLINT
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) {
}
};
class ScopedJavaFunc {
public:
ScopedJavaFunc(ThreadState *thr, uptr pc)
: thr_(thr) {
Initialize(thr_);
FuncEntry(thr, pc);
}
~ScopedJavaFunc() {
FuncExit(thr_);
// FIXME(dvyukov): process pending signals.
}
private:
ThreadState *thr_;
};
static u64 jctx_buf[sizeof(JavaContext) / sizeof(u64) + 1];
static JavaContext *jctx;
} // namespace __tsan
#define SCOPED_JAVA_FUNC(func) \
ThreadState *thr = cur_thread(); \
const uptr caller_pc = GET_CALLER_PC(); \
const uptr pc = __sanitizer::StackTrace::GetCurrentPc(); \
(void)pc; \
ScopedJavaFunc scoped(thr, caller_pc); \
/**/
void __tsan_java_init(jptr heap_begin, jptr heap_size) {
SCOPED_JAVA_FUNC(__tsan_java_init);
DPrintf("#%d: java_init(%p, %p)\n", thr->tid, heap_begin, heap_size);
CHECK_EQ(jctx, 0);
CHECK_GT(heap_begin, 0);
CHECK_GT(heap_size, 0);
CHECK_EQ(heap_begin % kHeapAlignment, 0);
CHECK_EQ(heap_size % kHeapAlignment, 0);
CHECK_LT(heap_begin, heap_begin + heap_size);
jctx = new(jctx_buf) JavaContext(heap_begin, heap_size);
}
int __tsan_java_fini() {
SCOPED_JAVA_FUNC(__tsan_java_fini);
DPrintf("#%d: java_fini()\n", thr->tid);
CHECK_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) {
SCOPED_JAVA_FUNC(__tsan_java_alloc);
DPrintf("#%d: java_alloc(%p, %p)\n", thr->tid, ptr, size);
CHECK_NE(jctx, 0);
CHECK_NE(size, 0);
CHECK_EQ(ptr % kHeapAlignment, 0);
CHECK_EQ(size % kHeapAlignment, 0);
CHECK_GE(ptr, jctx->heap_begin);
CHECK_LE(ptr + size, jctx->heap_begin + jctx->heap_size);
OnUserAlloc(thr, pc, ptr, size, false);
}
void __tsan_java_free(jptr ptr, jptr size) {
SCOPED_JAVA_FUNC(__tsan_java_free);
DPrintf("#%d: java_free(%p, %p)\n", thr->tid, ptr, size);
CHECK_NE(jctx, 0);
CHECK_NE(size, 0);
CHECK_EQ(ptr % kHeapAlignment, 0);
CHECK_EQ(size % kHeapAlignment, 0);
CHECK_GE(ptr, jctx->heap_begin);
CHECK_LE(ptr + size, jctx->heap_begin + jctx->heap_size);
ctx->metamap.FreeRange(thr, pc, ptr, size);
}
void __tsan_java_move(jptr src, jptr dst, jptr size) {
SCOPED_JAVA_FUNC(__tsan_java_move);
DPrintf("#%d: java_move(%p, %p, %p)\n", thr->tid, src, dst, size);
CHECK_NE(jctx, 0);
CHECK_NE(size, 0);
CHECK_EQ(src % kHeapAlignment, 0);
CHECK_EQ(dst % kHeapAlignment, 0);
CHECK_EQ(size % kHeapAlignment, 0);
CHECK_GE(src, jctx->heap_begin);
CHECK_LE(src + size, jctx->heap_begin + jctx->heap_size);
CHECK_GE(dst, jctx->heap_begin);
CHECK_LE(dst + size, jctx->heap_begin + jctx->heap_size);
CHECK_NE(dst, src);
CHECK_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);
// Move shadow.
u64 *s = (u64*)MemToShadow(src);
u64 *d = (u64*)MemToShadow(dst);
u64 *send = (u64*)MemToShadow(src + size);
uptr inc = 1;
if (dst > src) {
s = (u64*)MemToShadow(src + size) - 1;
d = (u64*)MemToShadow(dst + size) - 1;
send = (u64*)MemToShadow(src) - 1;
inc = -1;
}
for (; s != send; s += inc, d += inc) {
*d = *s;
*s = 0;
}
}
void __tsan_java_finalize() {
SCOPED_JAVA_FUNC(__tsan_java_finalize);
DPrintf("#%d: java_mutex_finalize()\n", thr->tid);
AcquireGlobal(thr, 0);
}
void __tsan_java_mutex_lock(jptr addr) {
SCOPED_JAVA_FUNC(__tsan_java_mutex_lock);
DPrintf("#%d: java_mutex_lock(%p)\n", thr->tid, addr);
CHECK_NE(jctx, 0);
CHECK_GE(addr, jctx->heap_begin);
CHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
MutexCreate(thr, pc, addr, true, true, true);
MutexLock(thr, pc, addr);
}
void __tsan_java_mutex_unlock(jptr addr) {
SCOPED_JAVA_FUNC(__tsan_java_mutex_unlock);
DPrintf("#%d: java_mutex_unlock(%p)\n", thr->tid, addr);
CHECK_NE(jctx, 0);
CHECK_GE(addr, jctx->heap_begin);
CHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
MutexUnlock(thr, pc, addr);
}
void __tsan_java_mutex_read_lock(jptr addr) {
SCOPED_JAVA_FUNC(__tsan_java_mutex_read_lock);
DPrintf("#%d: java_mutex_read_lock(%p)\n", thr->tid, addr);
CHECK_NE(jctx, 0);
CHECK_GE(addr, jctx->heap_begin);
CHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
MutexCreate(thr, pc, addr, true, true, true);
MutexReadLock(thr, pc, addr);
}
void __tsan_java_mutex_read_unlock(jptr addr) {
SCOPED_JAVA_FUNC(__tsan_java_mutex_read_unlock);
DPrintf("#%d: java_mutex_read_unlock(%p)\n", thr->tid, addr);
CHECK_NE(jctx, 0);
CHECK_GE(addr, jctx->heap_begin);
CHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
MutexReadUnlock(thr, pc, addr);
}
void __tsan_java_mutex_lock_rec(jptr addr, int rec) {
SCOPED_JAVA_FUNC(__tsan_java_mutex_lock_rec);
DPrintf("#%d: java_mutex_lock_rec(%p, %d)\n", thr->tid, addr, rec);
CHECK_NE(jctx, 0);
CHECK_GE(addr, jctx->heap_begin);
CHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
CHECK_GT(rec, 0);
MutexCreate(thr, pc, addr, true, true, true);
MutexLock(thr, pc, addr, rec);
}
int __tsan_java_mutex_unlock_rec(jptr addr) {
SCOPED_JAVA_FUNC(__tsan_java_mutex_unlock_rec);
DPrintf("#%d: java_mutex_unlock_rec(%p)\n", thr->tid, addr);
CHECK_NE(jctx, 0);
CHECK_GE(addr, jctx->heap_begin);
CHECK_LT(addr, jctx->heap_begin + jctx->heap_size);
return MutexUnlock(thr, pc, addr, true);
}
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