C++ (Cpp) PipeMemoryReader_getParentReadFD Examples

Example #1

File: swift-reflection-test.c Project: NicholasWei/swift

static
void PipeMemoryReader_collectBytesFromPipe(const PipeMemoryReader *Reader,
                                           void *Dest, size_t Size) {
  int ReadFD = PipeMemoryReader_getParentReadFD(Reader);
  while (Size) {
    int bytesRead = read(ReadFD, Dest, Size);
    if (bytesRead == -EINTR)
      continue;
    if (bytesRead <= 0)
      errorAndExit("collectBytesFromPipe");
    Size -= bytesRead;
    Dest += bytesRead;
  }
}

Example #2

File: swift-reflection-test.c Project: Nirma/swift

static
void PipeMemoryReader_collectBytesFromPipe(const PipeMemoryReader *Reader,
                                           void *Dest, size_t Size) {
  int ReadFD = PipeMemoryReader_getParentReadFD(Reader);
  while (Size) {
    int bytesRead = read(ReadFD, Dest, Size);
    if (bytesRead < 0)
      if (errno == EINTR)
        continue;
      else
        errnoAndExit("collectBytesFromPipe");
    else if (bytesRead == 0)
      errorAndExit("collectBytesFromPipe: Unexpected end of file");
    Size -= bytesRead;
    Dest += bytesRead;
  }
}

Example #3

File: swift-reflection-test.c Project: XLsn0wKit/swift

static
void PipeMemoryReader_collectBytesFromPipe(const PipeMemoryReader *Reader,
                                           void *Dest, size_t Size) {
  int ReadFD = PipeMemoryReader_getParentReadFD(Reader);
  while (Size) {
    int bytesRead = read(ReadFD, Dest, Size);
    if (bytesRead < 0)
      if (errno == EINTR)
        continue;
      else
        errnoAndExit("collectBytesFromPipe");
    else if (bytesRead == 0)
      errorAndExit("collectBytesFromPipe: Unexpected end of file");
    Size -= bytesRead;
    // Arithmetic on a void pointer is a GNU extension.
    Dest = (char*)(Dest) + bytesRead;
  }
}

Example #4

File: swift-reflection-test.c Project: XLsn0wKit/swift

int doDumpHeapInstance(const char *BinaryFilename) {
  PipeMemoryReader Pipe = createPipeMemoryReader();

  pid_t pid = _fork();
  switch (pid) {
    case -1:
      errnoAndExit("Couldn't fork child process");
    case 0: { // Child:
      close(PipeMemoryReader_getParentWriteFD(&Pipe));
      close(PipeMemoryReader_getParentReadFD(&Pipe));
      dup2(PipeMemoryReader_getChildReadFD(&Pipe), STDIN_FILENO);
      dup2(PipeMemoryReader_getChildWriteFD(&Pipe), STDOUT_FILENO);
      _execv(BinaryFilename, NULL);
      exit(EXIT_SUCCESS);
    }
    default: { // Parent
      close(PipeMemoryReader_getChildReadFD(&Pipe));
      close(PipeMemoryReader_getChildWriteFD(&Pipe));
      SwiftReflectionContextRef RC =
          swift_reflection_createReflectionContextWithDataLayout(
              (void *)&Pipe, PipeMemoryReader_queryDataLayout,
              PipeMemoryReader_freeBytes, PipeMemoryReader_readBytes,
              PipeMemoryReader_getStringLength,
              PipeMemoryReader_getSymbolAddress);

      uint8_t PointerSize = PipeMemoryReader_getPointerSize((void*)&Pipe);
      if (PointerSize != sizeof(uintptr_t))
        errorAndExit("Child process had unexpected architecture");

#if defined(__APPLE__) && defined(__MACH__)
      PipeMemoryReader_receiveImages(RC, &Pipe);
#else
      PipeMemoryReader_receiveReflectionInfo(RC, &Pipe);
#endif

      while (1) {
        InstanceKind Kind = PipeMemoryReader_receiveInstanceKind(&Pipe);
        switch (Kind) {
        case Object:
          printf("Reflecting an object.\n");
          if (!reflectHeapObject(RC, Pipe))
            return EXIT_SUCCESS;
          break;
        case Existential: {
          static const char Name[] = MANGLING_PREFIX_STR "ypD";
          swift_typeref_t AnyTR
            = swift_reflection_typeRefForMangledTypeName(RC,
              Name, sizeof(Name)-1);

          printf("Reflecting an existential.\n");
          if (!reflectExistential(RC, Pipe, AnyTR))
            return EXIT_SUCCESS;
          break;
        }
        case ErrorExistential: {
          static const char ErrorName[] = MANGLING_PREFIX_STR "s5Error_pD";
          swift_typeref_t ErrorTR
            = swift_reflection_typeRefForMangledTypeName(RC,
              ErrorName, sizeof(ErrorName)-1);
          printf("Reflecting an error existential.\n");
          if (!reflectExistential(RC, Pipe, ErrorTR))
            return EXIT_SUCCESS;
          break;
        }
        case Closure:
          printf("Reflecting a closure.\n");
          if (!reflectHeapObject(RC, Pipe))
            return EXIT_SUCCESS;
          break;
        case None:
          swift_reflection_destroyReflectionContext(RC);
          printf("Done.\n");
          return EXIT_SUCCESS;
        }
      }
    }
  }
  return EXIT_SUCCESS;
}

Example #5

File: swift-reflection-test.c Project: NicholasWei/swift

int doDumpHeapInstance(const char *BinaryFilename) {
  PipeMemoryReader Pipe = createPipeMemoryReader();

  pid_t pid = _fork();
  switch (pid) {
    case -1:
      errorAndExit("Couldn't fork child process");
      exit(EXIT_FAILURE);
    case 0: { // Child:
      close(PipeMemoryReader_getParentWriteFD(&Pipe));
      close(PipeMemoryReader_getParentReadFD(&Pipe));
      dup2(PipeMemoryReader_getChildReadFD(&Pipe), STDIN_FILENO);
      dup2(PipeMemoryReader_getChildWriteFD(&Pipe), STDOUT_FILENO);
      _execv(BinaryFilename, NULL);
      exit(EXIT_SUCCESS);
    }
    default: { // Parent
      close(PipeMemoryReader_getChildReadFD(&Pipe));
      close(PipeMemoryReader_getChildWriteFD(&Pipe));
      SwiftReflectionContextRef RC = swift_reflection_createReflectionContext(
        (void*)&Pipe,
        PipeMemoryReader_getPointerSize,
        PipeMemoryReader_getSizeSize,
        PipeMemoryReader_readBytes,
        PipeMemoryReader_getStringLength,
        PipeMemoryReader_getSymbolAddress);

      uint8_t PointerSize = PipeMemoryReader_getPointerSize((void*)&Pipe);
      if (PointerSize != sizeof(uintptr_t))
        errorAndExit("Child process had unexpected architecture");

      PipeMemoryReader_receiveReflectionInfo(RC, &Pipe);

      while (1) {
        InstanceKind Kind = PipeMemoryReader_receiveInstanceKind(&Pipe);
        switch (Kind) {
        case Object:
          printf("Reflecting an object.\n");
          if (!reflectHeapObject(RC, Pipe))
            return EXIT_SUCCESS;
          break;
        case Existential: {
          swift_typeref_t AnyTR
            = swift_reflection_typeRefForMangledTypeName(RC, "_TtP_", 5);

          printf("Reflecting an existential.\n");
          if (!reflectExistential(RC, Pipe, AnyTR))
            return EXIT_SUCCESS;
          break;
        }
        case ErrorExistential: {
          swift_typeref_t ErrorTR
            = swift_reflection_typeRefForMangledTypeName(RC,
              "_TtPs5Error_", 21);
          printf("Reflecting an error existential.\n");
          if (!reflectExistential(RC, Pipe, ErrorTR))
            return EXIT_SUCCESS;
          break;
        }
        case Closure:
          printf("Reflecting a closure.\n");
          if (!reflectHeapObject(RC, Pipe))
            return EXIT_SUCCESS;
          break;
        case None:
          swift_reflection_destroyReflectionContext(RC);
          printf("Done.\n");
          return EXIT_SUCCESS;
        }
      }
    }
  }
  return EXIT_SUCCESS;
}