forked from OSchip/llvm-project
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
//===-- sanitizer_stoptheworld.h --------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Defines the StopTheWorld function which suspends the execution of the current
|
|
// process and runs the user-supplied callback in the same address space.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef SANITIZER_STOPTHEWORLD_H
|
|
#define SANITIZER_STOPTHEWORLD_H
|
|
|
|
#include "sanitizer_internal_defs.h"
|
|
#include "sanitizer_common.h"
|
|
|
|
namespace __sanitizer {
|
|
|
|
enum PtraceRegistersStatus {
|
|
REGISTERS_UNAVAILABLE_FATAL = -1,
|
|
REGISTERS_UNAVAILABLE = 0,
|
|
REGISTERS_AVAILABLE = 1
|
|
};
|
|
|
|
// Holds the list of suspended threads and provides an interface to dump their
|
|
// register contexts.
|
|
class SuspendedThreadsList {
|
|
public:
|
|
SuspendedThreadsList() = default;
|
|
|
|
// Can't declare pure virtual functions in sanitizer runtimes:
|
|
// __cxa_pure_virtual might be unavailable. Use UNIMPLEMENTED() instead.
|
|
virtual PtraceRegistersStatus GetRegistersAndSP(uptr index, uptr *buffer,
|
|
uptr *sp) const {
|
|
UNIMPLEMENTED();
|
|
}
|
|
|
|
// The buffer in GetRegistersAndSP should be at least this big.
|
|
virtual uptr RegisterCount() const { UNIMPLEMENTED(); }
|
|
virtual uptr ThreadCount() const { UNIMPLEMENTED(); }
|
|
virtual tid_t GetThreadID(uptr index) const { UNIMPLEMENTED(); }
|
|
|
|
private:
|
|
// Prohibit copy and assign.
|
|
SuspendedThreadsList(const SuspendedThreadsList&);
|
|
void operator=(const SuspendedThreadsList&);
|
|
};
|
|
|
|
typedef void (*StopTheWorldCallback)(
|
|
const SuspendedThreadsList &suspended_threads_list,
|
|
void *argument);
|
|
|
|
// Suspend all threads in the current process and run the callback on the list
|
|
// of suspended threads. This function will resume the threads before returning.
|
|
// The callback should not call any libc functions. The callback must not call
|
|
// exit() nor _exit() and instead return to the caller.
|
|
// This function should NOT be called from multiple threads simultaneously.
|
|
void StopTheWorld(StopTheWorldCallback callback, void *argument);
|
|
|
|
} // namespace __sanitizer
|
|
|
|
#endif // SANITIZER_STOPTHEWORLD_H
|