Mercurial > hg > CbC > CbC_gcc
view libsanitizer/sanitizer_common/sanitizer_stoptheworld.h @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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//===-- sanitizer_stoptheworld.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 // //===----------------------------------------------------------------------===// // // 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