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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | FILES | SEE ALSO | AUTHOR | REPORTING BUGS | LICENSE | RESOURCES | NOTES | COLOPHON |
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LIBTRACEEVENT(3) libtraceevent Manual LIBTRACEEVENT(3)
tep_find_function, tep_find_function_address,
tep_find_function_info - Find function name / start address.
#include <event-parse.h>
const char *tep_find_function(struct tep_handle *tep, unsigned long long addr);
unsigned long long tep_find_function_address(struct tep_handle *tep, unsigned long long addr);
int tep_find_function_info(struct tep_handle *tep, unsigned long long addr, const char **name,
unsigned long long *start, unsigned long *size);
These functions can be used to find function name and start
address, by given address. The given address does not have to be
exact, it will select the function that would contain it.
The tep_find_function() function returns the function name, which
contains the given address addr. The tep argument is the trace
event parser context.
The tep_find_function_address() function returns the function
start address, by given address addr. The addr does not have to
be exact, it will select the function that would contain it. The
tep argument is the trace event parser context.
The tep_find_function_info() function retrieves the name,
starting address (start), and the function text size of the
function at address, if it is found. Note, if the tep handle has
a function resolver (used by perf), then size is set to zero.
The tep_find_function() function returns the function name, or
NULL in case it cannot be found.
The tep_find_function_address() function returns the function
start address, or 0 in case it cannot be found.
The tep_find_function_info() function returns 1 if a function is
found for the given address, or 0 if it is not.
#include <event-parse.h>
...
struct tep_handle *tep = tep_alloc();
...
void show_function_name(unsigned long long addr)
{
const char *fname = tep_find_function(tep, addr);
if (fname)
printf("Found function %s at 0x%0llx\n", fname, addr);
else
printf("No function found at 0x%0llx\n", addr);
}
void show_function_start_addr(unsigned long long addr)
{
const char *fname = tep_find_function(tep, addr);
unsigned long long fstart;
if (!fname) {
printf("No function found at 0x%0llx\n", addr);
return;
}
fstart = tep_find_function_address(tep, addr);
printf("Function %s at 0x%llx starts at 0x%0llx\n",
fname, addr, fstart);
}
void show_function_info(unsigned long long addr)
{
const char *fname;
unsigned long long fstart;
unsigned long size;
ret = tep_find_function_info(tep, addr, &fname, &fstart, &size);
if (!ret) {
printf("No function found at 0x%0lx\n", addr);
return;
}
printf("Function %s at 0x%lx starts at 0x%0lx and is %ld in size\n",
fname, addr, fstart, size);
}
...
event-parse.h
Header file to include in order to have access to the library APIs.
-ltraceevent
Linker switch to add when building a program that uses the library.
libtraceevent(3), trace-cmd(1)
Steven Rostedt <rostedt@goodmis.org[1]>, author of libtraceevent.
Tzvetomir Stoyanov <tz.stoyanov@gmail.com[2]>, author of this man page.
Report bugs to <linux-trace-devel@vger.kernel.org[3]>
libtraceevent is Free Software licensed under the GNU LGPL 2.1
https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/
1. rostedt@goodmis.org
mailto:rostedt@goodmis.org
2. tz.stoyanov@gmail.com
mailto:tz.stoyanov@gmail.com
3. linux-trace-devel@vger.kernel.org
mailto:linux-trace-devel@vger.kernel.org
This page is part of the libtraceevent (Linux kernel trace event
library) project. Information about the project can be found at
⟨https://www.trace-cmd.org/⟩. If you have a bug report for this
manual page, see ⟨https://www.trace-cmd.org/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git⟩
on 2023-12-22. (At that time, the date of the most recent commit
that was found in the repository was 2023-06-07.) If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
libtraceevent 1.7.3 09/24/2023 LIBTRACEEVENT(3)
Pages that refer to this page: tep_set_function_resolver(3)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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