#definePAGE_CHECKSUM_MISMATCH (-256)

#defineSYS_CHECK(cmd) do if ((cmd) < 0) { fprintf(stderr, "%s:%d: (%s) %s\n", __FILE__, __LINE__, #cmd, strerror(errno)); exit(EXIT_FAILURE); } while (0)

#defineIO_CHECK(cmd,size) do { int _rc = (cmd); if (_rc != (size)) if (remote_agent) { fprintf(stderr, "%s:%d: proceeds %d bytes instead of %d: %s\n", __FILE__, __LINE__, _rc, (int)(size), _rc >= 0 ? "end of data" : strerror(errno)); exit(EXIT_FAILURE); } else elog(ERROR, "Communication error: %s", _rc >= 0 ? "end of data" : strerror(errno)); } while (0)

#defineIO_CHECK(cmd,size) do { int _rc = (cmd); if (_rc != (size)){if (remote_agent) { fprintf(stderr, "%s:%d: proceeds %d bytes instead of %d: %s\n", __FILE__, __LINE__, _rc, (int)(size), _rc >= 0 ? "end of data" : strerror(errno)); exit(EXIT_FAILURE); } else elog(ERROR, "Communication error: %s", _rc >= 0 ? "end of data" : strerror(errno)); } } while (0)

{