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INTEGRATION: CWS hro02 (1.7.62); FILE MERGED

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2006/02/06 14:38:37 hro 1.7.62.1: #56946# Backtrace implementation on FreeBSD
This commit is contained in:
Rüdiger Timm
2006-02-09 16:05:45 +00:00
parent 3d37a22ead
commit ae64b544f8
1 changed files with 47 additions and 3 deletions
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50
sal/osl/unx/backtrace.c
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@@ -4,9 +4,9 @@
* *
* $RCSfile: backtrace.c,v $ * $RCSfile: backtrace.c,v $
* *
* $Revision: 1.7 $ * $Revision: 1.8 $
* *
* last change: $Author: rt $ $Date: 2005-09-08 14:52:44 $ * last change: $Author: rt $ $Date: 2006-02-09 17:05:45 $
* *
* The Contents of this file are made available subject to * The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1. * the terms of GNU Lesser General Public License Version 2.1.
@@ -128,6 +128,7 @@ void backtrace_symbols_fd( void **buffer, int size, int fd )
#include <dlfcn.h> #include <dlfcn.h>
#include <pthread.h> #include <pthread.h>
#include <setjmp.h> #include <setjmp.h>
#include <stddef.h>
#include <stdio.h> #include <stdio.h>
#include "backtrace.h" #include "backtrace.h"
@@ -136,12 +137,55 @@ void backtrace_symbols_fd( void **buffer, int size, int fd )
int backtrace( void **buffer, int max_frames ) int backtrace( void **buffer, int max_frames )
{ {
return 1; struct frame *fp;
jmp_buf ctx;
int i;
/* get stack- and framepointer */
setjmp(ctx);
fp = (struct frame*)(((size_t*)(ctx))[FRAME_PTR_OFFSET]);
for ( i=0; (i<FRAME_OFFSET) && (fp!=0); i++)
fp = fp->fr_savfp;
/* iterate through backtrace */
for (i=0; fp && fp->fr_savpc && i<max_frames; i++)
{
/* store frame */
*(buffer++) = (void *)fp->fr_savpc;
/* next frame */
fp=fp->fr_savfp;
}
return i;
} }
void backtrace_symbols_fd( void **buffer, int size, int fd ) void backtrace_symbols_fd( void **buffer, int size, int fd )
{ {
FILE *fp = fdopen( fd, "w" );
if ( fp )
{
void **pFramePtr;
for ( pFramePtr = buffer; size > 0 && pFramePtr && *pFramePtr; pFramePtr++, size-- )
{
Dl_info dli;
ptrdiff_t offset;
if ( 0 != dladdr( *pFramePtr, &dli ) )
{
if ( dli.dli_fname && dli.dli_fbase )
{
offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_fbase;
fprintf( fp, "%s+0x%x", dli.dli_fname, offset );
}
if ( dli.dli_sname && dli.dli_saddr )
{
offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_saddr;
fprintf( fp, "(%s+0x%x)", dli.dli_sname, offset );
}
}
fprintf( fp, "[0x%x]\n", *pFramePtr );
}
fflush( fp );
fclose( fp );
}
} }
#endif /* defined FREEBSD */ #endif /* defined FREEBSD */