tsan_interface.h

//===-- tsan_interface.h ----------------------------------------*- C++ -*-===//
//
// 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.
//
// The functions declared in this header will be inserted by the instrumentation
// module.
// This header can be included by the instrumented program or by TSan tests.
//===----------------------------------------------------------------------===//
#ifndef TSAN_INTERFACE_H
#define TSAN_INTERFACE_H

#include <sanitizer_common/sanitizer_internal_defs.h>
using __sanitizer::uptr;
using __sanitizer::tid_t;

// This header should NOT include any other headers.
// All functions in this header are extern "C" and start with __tsan_.

#ifdef __cplusplus
extern "C" {
#endif

#if !SANITIZER_GO

// This function should be called at the very beginning of the process,
// before any instrumented code is executed and before any call to malloc.
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_init();

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_flush_memory();

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read1(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read2(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read4(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read8(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read16(void *addr);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write1(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write2(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write4(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write8(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write16(void *addr);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read2(const void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read4(const void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read8(const void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_read16(const void *addr);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write2(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write4(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write8(void *addr);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_unaligned_write16(void *addr);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read1_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read2_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read4_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read8_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_read16_pc(void *addr, void *pc);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write1_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write2_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write4_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write8_pc(void *addr, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_write16_pc(void *addr, void *pc);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_vptr_read(void **vptr_p);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_vptr_update(void **vptr_p, void *new_val);

SANITIZER_INTERFACE_ATTRIBUTE
void *__tsan_memcpy(void *dest, const void *src, uptr count);
SANITIZER_INTERFACE_ATTRIBUTE
void *__tsan_memset(void *dest, int ch, uptr count);
SANITIZER_INTERFACE_ATTRIBUTE
void *__tsan_memmove(void *dest, const void *src, uptr count);

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_entry(void *call_pc);
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_func_exit();

SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_begin();
SANITIZER_INTERFACE_ATTRIBUTE void __tsan_ignore_thread_end();

SANITIZER_INTERFACE_ATTRIBUTE
void *__tsan_external_register_tag(const char *object_type);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_external_register_header(void *tag, const char *header);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_external_assign_tag(void *addr, void *tag);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_external_read(void *addr, void *caller_pc, void *tag);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_external_write(void *addr, void *caller_pc, void *tag);

SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_read_range(void *addr, unsigned long size);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_write_range(void *addr, unsigned long size);

SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_read_range_pc(void *addr, unsigned long size, void *pc);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_write_range_pc(void *addr, unsigned long size, void *pc);

// User may provide function that would be called right when TSan detects
// an error. The argument 'report' is an opaque pointer that can be used to
// gather additional information using other TSan report API functions.
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_on_report(void *report);

// If TSan is currently reporting a detected issue on the current thread,
// returns an opaque pointer to the current report. Otherwise returns NULL.
SANITIZER_INTERFACE_ATTRIBUTE
void *__tsan_get_current_report();

// Returns a report's description (issue type), number of duplicate issues
// found, counts of array data (stack traces, memory operations, locations,
// mutexes, threads, unique thread IDs) and a stack trace of a sleep() call (if
// one was involved in the issue).
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_data(void *report, const char **description, int *count,
                           int *stack_count, int *mop_count, int *loc_count,
                           int *mutex_count, int *thread_count,
                           int *unique_tid_count, void **sleep_trace,
                           uptr trace_size);

/// Retrieves the "tag" from a report (for external-race report types). External
/// races can be associated with a tag which give them more meaning. For example
/// tag value '1' means "Swift access race". Tag value '0' indicated a plain
/// external race.
///
/// \param report opaque pointer to the current report (obtained as argument in
///               __tsan_on_report, or from __tsan_get_current_report)
/// \param [out] tag points to storage that will be filled with the tag value
///
/// \returns non-zero value on success, zero on failure
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_tag(void *report, uptr *tag);

// Returns information about stack traces included in the report.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_stack(void *report, uptr idx, void **trace,
                            uptr trace_size);

// Returns information about memory operations included in the report.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_mop(void *report, uptr idx, int *tid, void **addr,
                          int *size, int *write, int *atomic, void **trace,
                          uptr trace_size);

// Returns information about locations included in the report.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_loc(void *report, uptr idx, const char **type,
                          void **addr, uptr *start, uptr *size, int *tid,
                          int *fd, int *suppressable, void **trace,
                          uptr trace_size);

SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_loc_object_type(void *report, uptr idx,
                                      const char **object_type);

// Returns information about mutexes included in the report.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_mutex(void *report, uptr idx, uptr *mutex_id, void **addr,
                            int *destroyed, void **trace, uptr trace_size);

// Returns information about threads included in the report.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_thread(void *report, uptr idx, int *tid, tid_t *os_id,
                             int *running, const char **name, int *parent_tid,
                             void **trace, uptr trace_size);

// Returns information about unique thread IDs included in the report.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_report_unique_tid(void *report, uptr idx, int *tid);

// Returns the type of the pointer (heap, stack, global, ...) and if possible
// also the starting address (e.g. of a heap allocation) and size.
SANITIZER_INTERFACE_ATTRIBUTE
const char *__tsan_locate_address(uptr addr, char *name, uptr name_size,
                                  uptr *region_address, uptr *region_size);

// Returns the allocation stack for a heap pointer.
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_get_alloc_stack(uptr addr, uptr *trace, uptr size, int *thread_id,
                           tid_t *os_id);

#endif  // SANITIZER_GO

#ifdef __cplusplus
}  // extern "C"
#endif

namespace __tsan {

// These should match declarations from public tsan_interface_atomic.h header.
typedef unsigned char      a8;
typedef unsigned short a16;
typedef unsigned int       a32;
typedef unsigned long long a64;
#if !SANITIZER_GO && (defined(__SIZEOF_INT128__) \
    || (__clang_major__ * 100 + __clang_minor__ >= 302)) && \
    !defined(__mips64) && !defined(__s390x__)
__extension__ typedef __int128 a128;
# define __TSAN_HAS_INT128 1
#else
# define __TSAN_HAS_INT128 0
#endif

// Part of ABI, do not change.
// https://github.com/llvm/llvm-project/blob/main/libcxx/include/atomic
typedef enum {
  mo_relaxed,
  mo_consume,
  mo_acquire,
  mo_release,
  mo_acq_rel,
  mo_seq_cst
} morder;

struct ThreadState;

extern "C" {
SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_load(const volatile a8 *a, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_load(const volatile a16 *a, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_load(const volatile a32 *a, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_load(const volatile a64 *a, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_load(const volatile a128 *a, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic8_store(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic16_store(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic32_store(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic64_store(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic128_store(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_exchange(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_exchange(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_exchange(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_exchange(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_exchange(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_fetch_add(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_fetch_add(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_fetch_add(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_fetch_add(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_fetch_add(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_fetch_sub(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_fetch_sub(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_fetch_sub(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_fetch_sub(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_fetch_sub(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_fetch_and(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_fetch_and(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_fetch_and(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_fetch_and(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_fetch_and(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_fetch_or(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_fetch_or(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_fetch_or(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_fetch_or(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_fetch_or(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_fetch_xor(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_fetch_xor(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_fetch_xor(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_fetch_xor(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_fetch_xor(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_fetch_nand(volatile a8 *a, a8 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_fetch_nand(volatile a16 *a, a16 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_fetch_nand(volatile a32 *a, a32 v, morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_fetch_nand(volatile a64 *a, a64 v, morder mo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_fetch_nand(volatile a128 *a, a128 v, morder mo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic8_compare_exchange_strong(volatile a8 *a, a8 *c, a8 v,
                                           morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic16_compare_exchange_strong(volatile a16 *a, a16 *c, a16 v,
                                            morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic32_compare_exchange_strong(volatile a32 *a, a32 *c, a32 v,
                                            morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic64_compare_exchange_strong(volatile a64 *a, a64 *c, a64 v,
                                            morder mo, morder fmo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic128_compare_exchange_strong(volatile a128 *a, a128 *c, a128 v,
                                             morder mo, morder fmo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic8_compare_exchange_weak(volatile a8 *a, a8 *c, a8 v, morder mo,
                                         morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic16_compare_exchange_weak(volatile a16 *a, a16 *c, a16 v,
                                          morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic32_compare_exchange_weak(volatile a32 *a, a32 *c, a32 v,
                                          morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic64_compare_exchange_weak(volatile a64 *a, a64 *c, a64 v,
                                          morder mo, morder fmo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
int __tsan_atomic128_compare_exchange_weak(volatile a128 *a, a128 *c, a128 v,
                                           morder mo, morder fmo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
a8 __tsan_atomic8_compare_exchange_val(volatile a8 *a, a8 c, a8 v, morder mo,
                                       morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
a16 __tsan_atomic16_compare_exchange_val(volatile a16 *a, a16 c, a16 v,
                                         morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
a32 __tsan_atomic32_compare_exchange_val(volatile a32 *a, a32 c, a32 v,
                                         morder mo, morder fmo);
SANITIZER_INTERFACE_ATTRIBUTE
a64 __tsan_atomic64_compare_exchange_val(volatile a64 *a, a64 c, a64 v,
                                         morder mo, morder fmo);
#if __TSAN_HAS_INT128
SANITIZER_INTERFACE_ATTRIBUTE
a128 __tsan_atomic128_compare_exchange_val(volatile a128 *a, a128 c, a128 v,
                                           morder mo, morder fmo);
#endif

SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic_thread_fence(morder mo);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_atomic_signal_fence(morder mo);

SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic32_load(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic64_load(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic32_store(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic64_store(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic32_fetch_add(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic64_fetch_add(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic32_exchange(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic64_exchange(ThreadState *thr, uptr cpc, uptr pc, u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic32_compare_exchange(ThreadState *thr, uptr cpc, uptr pc,
                                         u8 *a);
SANITIZER_INTERFACE_ATTRIBUTE
void __tsan_go_atomic64_compare_exchange(ThreadState *thr, uptr cpc, uptr pc,
                                         u8 *a);

}  // extern "C"

}  // namespace __tsan

#endif  // TSAN_INTERFACE_H