| 1 | //===-- tsan_fd.h -----------------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file is a part of ThreadSanitizer (TSan), a race detector. |
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| 10 | // |
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| 11 | // This file handles synchronization via IO. |
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| 12 | // People use IO for synchronization along the lines of: |
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| 13 | // |
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| 14 | // int X; |
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| 15 | // int client_socket; // initialized elsewhere |
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| 16 | // int server_socket; // initialized elsewhere |
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| 17 | // |
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| 18 | // Thread 1: |
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| 19 | // X = 42; |
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| 20 | // send(client_socket, ...); |
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| 21 | // |
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| 22 | // Thread 2: |
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| 23 | // if (recv(server_socket, ...) > 0) |
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| 24 | // assert(X == 42); |
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| 25 | // |
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| 26 | // This file determines the scope of the file descriptor (pipe, socket, |
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| 27 | // all local files, etc) and executes acquire and release operations on |
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| 28 | // the scope as necessary. Some scopes are very fine grained (e.g. pipe |
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| 29 | // operations synchronize only with operations on the same pipe), while |
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| 30 | // others are corse-grained (e.g. all operations on local files synchronize |
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| 31 | // with each other). |
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| 32 | //===----------------------------------------------------------------------===// |
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| 33 | #ifndef TSAN_FD_H |
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| 34 | #define TSAN_FD_H |
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| 35 | |
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| 36 | #include "tsan_rtl.h" |
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| 37 | |
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| 38 | namespace __tsan { |
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| 39 | |
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| 40 | void FdInit(); |
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| 41 | void FdAcquire(ThreadState *thr, uptr pc, int fd); |
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| 42 | void FdRelease(ThreadState *thr, uptr pc, int fd); |
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| 43 | void FdAccess(ThreadState *thr, uptr pc, int fd); |
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| 44 | void FdClose(ThreadState *thr, uptr pc, int fd, bool write = true); |
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| 45 | void FdFileCreate(ThreadState *thr, uptr pc, int fd); |
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| 46 | void FdDup(ThreadState *thr, uptr pc, int oldfd, int newfd, bool write); |
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| 47 | void FdPipeCreate(ThreadState *thr, uptr pc, int rfd, int wfd); |
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| 48 | void FdEventCreate(ThreadState *thr, uptr pc, int fd); |
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| 49 | void FdSignalCreate(ThreadState *thr, uptr pc, int fd); |
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| 50 | void FdInotifyCreate(ThreadState *thr, uptr pc, int fd); |
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| 51 | void FdPollCreate(ThreadState *thr, uptr pc, int fd); |
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| 52 | void FdPollAdd(ThreadState *thr, uptr pc, int epfd, int fd); |
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| 53 | void FdSocketCreate(ThreadState *thr, uptr pc, int fd); |
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| 54 | void FdSocketAccept(ThreadState *thr, uptr pc, int fd, int newfd); |
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| 55 | void FdSocketConnecting(ThreadState *thr, uptr pc, int fd); |
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| 56 | void FdSocketConnect(ThreadState *thr, uptr pc, int fd); |
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| 57 | bool FdLocation(uptr addr, int *fd, Tid *tid, StackID *stack, bool *closed); |
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| 58 | void FdOnFork(ThreadState *thr, uptr pc); |
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| 59 | |
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| 60 | uptr File2addr(const char *path); |
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| 61 | uptr Dir2addr(const char *path); |
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| 62 | |
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| 63 | } // namespace __tsan |
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| 64 | |
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| 65 | #endif // TSAN_INTERFACE_H |
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| 66 | |
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