libsanitizer/tsan/tsan_fd.h

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