1 //===-- tsan_fd.h -----------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of ThreadSanitizer (TSan), a race detector. 11 // 12 // This file handles synchronization via IO. 13 // People use IO for synchronization along the lines of: 14 // 15 // int X; 16 // int client_socket; // initialized elsewhere 17 // int server_socket; // initialized elsewhere 18 // 19 // Thread 1: 20 // X = 42; 21 // send(client_socket, ...); 22 // 23 // Thread 2: 24 // if (recv(server_socket, ...) > 0) 25 // assert(X == 42); 26 // 27 // This file determines the scope of the file descriptor (pipe, socket, 28 // all local files, etc) and executes acquire and release operations on 29 // the scope as necessary. Some scopes are very fine grained (e.g. pipe 30 // operations synchronize only with operations on the same pipe), while 31 // others are corse-grained (e.g. all operations on local files synchronize 32 // with each other). 33 //===----------------------------------------------------------------------===// 34 #ifndef TSAN_FD_H 35 #define TSAN_FD_H 36 37 #include "tsan_rtl.h" 38 39 namespace __tsan { 40 41 void FdInit(); 42 void FdAcquire(ThreadState *thr, uptr pc, int fd); 43 void FdRelease(ThreadState *thr, uptr pc, int fd); 44 void FdAccess(ThreadState *thr, uptr pc, int fd); 45 void FdClose(ThreadState *thr, uptr pc, int fd, bool write = true); 46 void FdFileCreate(ThreadState *thr, uptr pc, int fd); 47 void FdDup(ThreadState *thr, uptr pc, int oldfd, int newfd, bool write); 48 void FdPipeCreate(ThreadState *thr, uptr pc, int rfd, int wfd); 49 void FdEventCreate(ThreadState *thr, uptr pc, int fd); 50 void FdSignalCreate(ThreadState *thr, uptr pc, int fd); 51 void FdInotifyCreate(ThreadState *thr, uptr pc, int fd); 52 void FdPollCreate(ThreadState *thr, uptr pc, int fd); 53 void FdSocketCreate(ThreadState *thr, uptr pc, int fd); 54 void FdSocketAccept(ThreadState *thr, uptr pc, int fd, int newfd); 55 void FdSocketConnecting(ThreadState *thr, uptr pc, int fd); 56 void FdSocketConnect(ThreadState *thr, uptr pc, int fd); 57 bool FdLocation(uptr addr, int *fd, int *tid, u32 *stack); 58 void FdOnFork(ThreadState *thr, uptr pc); 59 60 uptr File2addr(const char *path); 61 uptr Dir2addr(const char *path); 62 63 } // namespace __tsan 64 65 #endif // TSAN_INTERFACE_H 66