| |
| /*--------------------------------------------------------------------*/ |
| /*--- Libc printing. m_libcprint.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2005 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #include "pub_core_basics.h" |
| #include "pub_core_debuglog.h" |
| #include "pub_core_libcbase.h" |
| #include "pub_core_libcassert.h" |
| #include "pub_core_libcfile.h" // For VG_(write)(), VG_(write_socket)() |
| #include "pub_core_libcprint.h" |
| #include "pub_core_libcproc.h" // For VG_(getpid)() |
| #include "pub_core_options.h" |
| #include "valgrind.h" // For RUNNING_ON_VALGRIND |
| |
| #include <time.h> |
| #include <sys/time.h> |
| |
| /* --------------------------------------------------------------------- |
| Writing to file or a socket |
| ------------------------------------------------------------------ */ |
| |
| /* Tell the logging mechanism whether we are logging to a file |
| descriptor or a socket descriptor. */ |
| Bool VG_(logging_to_socket) = False; |
| |
| /* Do the low-level send of a message to the logging sink. */ |
| static void send_bytes_to_logging_sink ( Char* msg, Int nbytes ) |
| { |
| if (!VG_(logging_to_socket)) { |
| VG_(write)( VG_(clo_log_fd), msg, nbytes ); |
| } else { |
| Int rc = VG_(write_socket)( VG_(clo_log_fd), msg, nbytes ); |
| if (rc == -1) { |
| // For example, the listener process died. Switch back to stderr. |
| VG_(logging_to_socket) = False; |
| VG_(clo_log_fd) = 2; |
| VG_(write)( VG_(clo_log_fd), msg, nbytes ); |
| } |
| } |
| } |
| |
| /* --------------------------------------------------------------------- |
| printf() and friends |
| ------------------------------------------------------------------ */ |
| |
| typedef struct { |
| char buf[100]; |
| int n; |
| } printf_buf; |
| |
| // Adds a single char to the buffer. When the buffer gets sufficiently |
| // full, we write its contents to the logging sink. |
| static void add_to_myprintf_buf ( HChar c, void *p ) |
| { |
| printf_buf *myprintf_buf = (printf_buf *)p; |
| |
| if (myprintf_buf->n >= 100-10 /*paranoia*/ ) { |
| send_bytes_to_logging_sink( myprintf_buf->buf, myprintf_buf->n ); |
| myprintf_buf->n = 0; |
| } |
| myprintf_buf->buf[myprintf_buf->n++] = c; |
| myprintf_buf->buf[myprintf_buf->n] = 0; |
| } |
| |
| UInt VG_(vprintf) ( const HChar *format, va_list vargs ) |
| { |
| UInt ret = 0; |
| printf_buf myprintf_buf = {"",0}; |
| |
| if (VG_(clo_log_fd) >= 0) { |
| ret = VG_(debugLog_vprintf) |
| ( add_to_myprintf_buf, &myprintf_buf, format, vargs ); |
| |
| // Write out any chars left in the buffer. |
| if (myprintf_buf.n > 0) { |
| send_bytes_to_logging_sink( myprintf_buf.buf, myprintf_buf.n ); |
| } |
| } |
| return ret; |
| } |
| |
| UInt VG_(printf) ( const HChar *format, ... ) |
| { |
| UInt ret; |
| va_list vargs; |
| |
| va_start(vargs, format); |
| ret = VG_(vprintf)(format, vargs); |
| va_end(vargs); |
| |
| return ret; |
| } |
| |
| /* A general replacement for sprintf(). */ |
| static void add_to_vg_sprintf_buf ( HChar c, void *p ) |
| { |
| char **vg_sprintf_ptr = p; |
| *(*vg_sprintf_ptr)++ = c; |
| } |
| |
| UInt VG_(vsprintf) ( Char* buf, const HChar *format, va_list vargs ) |
| { |
| Int ret; |
| Char *vg_sprintf_ptr = buf; |
| |
| ret = VG_(debugLog_vprintf) |
| ( add_to_vg_sprintf_buf, &vg_sprintf_ptr, format, vargs ); |
| add_to_vg_sprintf_buf('\0', &vg_sprintf_ptr); |
| |
| vg_assert(VG_(strlen)(buf) == ret); |
| |
| return ret; |
| } |
| |
| UInt VG_(sprintf) ( Char* buf, const HChar *format, ... ) |
| { |
| UInt ret; |
| va_list vargs; |
| |
| va_start(vargs,format); |
| ret = VG_(vsprintf)(buf, format, vargs); |
| va_end(vargs); |
| |
| return ret; |
| } |
| |
| /* --------------------------------------------------------------------- |
| message() |
| ------------------------------------------------------------------ */ |
| |
| UInt VG_(vmessage) ( VgMsgKind kind, const HChar* format, va_list vargs ) |
| { |
| UInt count = 0; |
| Char c; |
| const Char* pfx_s; |
| static const Char pfx[] = ">>>>>>>>>>>>>>>>"; |
| |
| switch (kind) { |
| case Vg_UserMsg: c = '='; break; |
| case Vg_DebugMsg: c = '-'; break; |
| case Vg_DebugExtraMsg: c = '+'; break; |
| case Vg_ClientMsg: c = '*'; break; |
| default: c = '?'; break; |
| } |
| |
| // The pfx trick prints one or more '>' characters in front of the |
| // messages when running Valgrind under Valgrind, one per level of |
| // self-hosting. |
| pfx_s = &pfx[sizeof(pfx)-1-RUNNING_ON_VALGRIND], |
| |
| // Print the message |
| count = 0; |
| |
| if (!VG_(clo_xml)) |
| count += VG_(printf) ("%s%c%c", pfx_s, c,c); |
| |
| if (VG_(clo_time_stamp)) { |
| struct timeval tv; |
| struct tm tm; |
| |
| if ( gettimeofday( &tv, NULL ) == 0 && |
| localtime_r( &tv.tv_sec, &tm ) == &tm ) |
| { |
| count += |
| VG_(printf)( "%04d-%02d-%02d %02d:%02d:%02d.%03d ", |
| tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, |
| tm.tm_hour, tm.tm_min, tm.tm_sec, tv.tv_usec / 1000 ); |
| } |
| } |
| |
| if (!VG_(clo_xml)) |
| count += VG_(printf) ("%d%c%c ", VG_(getpid)(), c,c); |
| |
| count += VG_(vprintf)(format, vargs); |
| count += VG_(printf) ("\n"); |
| return count; |
| } |
| |
| /* Send a simple single-part message. */ |
| UInt VG_(message) ( VgMsgKind kind, const HChar* format, ... ) |
| { |
| UInt count; |
| va_list vargs; |
| va_start(vargs,format); |
| count = VG_(vmessage) ( kind, format, vargs ); |
| va_end(vargs); |
| return count; |
| } |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |
| |