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https://github.com/ioacademy-jikim/debugging
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167 lines
6.7 KiB
C
167 lines
6.7 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- Printing libc stuff. pub_tool_libcprint.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2000-2015 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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The GNU General Public License is contained in the file COPYING.
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*/
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#ifndef __PUB_TOOL_LIBCPRINT_H
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#define __PUB_TOOL_LIBCPRINT_H
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#include "pub_tool_basics.h" // VG_ macro
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/* ---------------------------------------------------------------------
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Formatting functions
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------------------------------------------------------------------ */
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/* The formatting functions supports a subset (and 2 extensions) of
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the 'printf' format.
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The extensions are:
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%pS : print a string (like %s) but escaping chars for XML safety.
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%ps : with --xml=no, synonym for %s, with --xml=yes, synonym of %pS.
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Note: these extensions do not cause the compiler to barf with PRINTF_CHECK
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as for the classical printf, %p requires a pointer, which must also
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be provided for the %ps and %pS extensions. The s/S following %p
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are understood by PRINTF_CHECK as characters to output.
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*/
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extern UInt VG_(sprintf) ( HChar* buf, const HChar* format, ... )
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PRINTF_CHECK(2, 3);
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extern UInt VG_(vsprintf) ( HChar* buf, const HChar* format, va_list vargs )
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PRINTF_CHECK(2, 0);
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extern UInt VG_(snprintf) ( HChar* buf, Int size,
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const HChar *format, ... )
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PRINTF_CHECK(3, 4);
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extern UInt VG_(vsnprintf)( HChar* buf, Int size,
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const HChar *format, va_list vargs )
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PRINTF_CHECK(3, 0);
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/* ---------------------------------------------------------------------
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Output-printing functions
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------------------------------------------------------------------ */
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// Note that almost all output goes to the file descriptor given by the
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// --log-fd/--log-file/--log-socket argument, which defaults to 2 (stderr).
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// (Except that some text always goes to stdout/stderr at startup, and
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// debugging messages always go to stderr.) Hence no need for
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// VG_(fprintf)().
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/* No, really. I _am_ that strange. */
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#define OINK(nnn) VG_(message)(Vg_DebugMsg, "OINK %d\n",nnn)
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/* Print a message with a prefix that depends on the VgMsgKind.
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Should be used for all user output. */
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typedef
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enum { // Prefix
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Vg_FailMsg, // "valgrind:"
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Vg_UserMsg, // "==pid=="
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Vg_DebugMsg, // "--pid--"
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Vg_ClientMsg // "**pid**"
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}
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VgMsgKind;
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// These print output that isn't prefixed with anything, and should be
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// used in very few cases, such as printing usage messages.
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extern UInt VG_(printf) ( const HChar *format, ... )
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PRINTF_CHECK(1, 2);
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extern UInt VG_(vprintf) ( const HChar *format, va_list vargs )
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PRINTF_CHECK(1, 0);
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extern UInt VG_(printf_xml) ( const HChar *format, ... )
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PRINTF_CHECK(1, 2);
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extern UInt VG_(vprintf_xml) ( const HChar *format, va_list vargs )
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PRINTF_CHECK(1, 0);
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typedef struct _VgFile VgFile;
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extern VgFile *VG_(fopen) ( const HChar *name, Int flags, Int mode );
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extern void VG_(fclose) ( VgFile *fp );
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extern UInt VG_(fprintf) ( VgFile *fp, const HChar *format, ... )
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PRINTF_CHECK(2, 3);
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extern UInt VG_(vfprintf) ( VgFile *fp, const HChar *format, va_list vargs )
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PRINTF_CHECK(2, 0);
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/* Do a printf-style operation on either the XML
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or normal output channel
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or gdb output channel, depending on the setting of VG_(clo_xml)
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and the state of VG_(log_output_sink). */
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extern UInt VG_(emit) ( const HChar* format, ... ) PRINTF_CHECK(1, 2);
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/* Yet another, totally general, version of vprintf, which hands all
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output bytes to CHAR_SINK, passing it OPAQUE as the second arg. */
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extern void VG_(vcbprintf)( void(*char_sink)(HChar, void* opaque),
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void* opaque,
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const HChar* format, va_list vargs );
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extern UInt VG_(message)( VgMsgKind kind, const HChar* format, ... )
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PRINTF_CHECK(2, 3);
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extern UInt VG_(vmessage)( VgMsgKind kind, const HChar* format, va_list vargs )
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PRINTF_CHECK(2, 0);
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// Short-cuts for VG_(message)().
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// This is used for messages printed due to start-up failures that occur
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// before the preamble is printed, eg. due a bad executable.
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extern UInt VG_(fmsg)( const HChar* format, ... ) PRINTF_CHECK(1, 2);
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// This is used if an option was bad for some reason. Note: don't use it just
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// because an option was unrecognised -- return 'False' from
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// VG_(tdict).tool_process_cmd_line_option) to indicate that -- use it if eg.
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// an option was given an inappropriate argument. This function prints an
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// error message, then shuts down the entire system.
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__attribute__((noreturn))
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extern void VG_(fmsg_bad_option) ( const HChar* opt, const HChar* format, ... )
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PRINTF_CHECK(2, 3);
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// This is used for messages that are interesting to the user: info about
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// their program (eg. preamble, tool error messages, postamble) or stuff they
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// requested.
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extern UInt VG_(umsg)( const HChar* format, ... ) PRINTF_CHECK(1, 2);
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// This is used for debugging messages that are only of use to developers.
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extern UInt VG_(dmsg)( const HChar* format, ... ) PRINTF_CHECK(1, 2);
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/* Flush any output cached by previous calls to VG_(message) et al. */
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extern void VG_(message_flush) ( void );
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/* Return a textual representation of a SysRes value in a statically
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allocated buffer. The buffer will be overwritten with the next
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invocation. */
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extern const HChar *VG_(sr_as_string) ( SysRes sr );
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#endif // __PUB_TOOL_LIBCPRINT_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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