Some are just typedefs, others are inside structs and in some cases its
useful to see the statistics for them, so add two new cmd line options:
-a, --anon_include include anonymous classes\
-A, --nested_anon_include include nested (inside other structs) anonymous classes
Commiter note: I've reworked several aspects of the patch, but mostly to
give better names for the new find_first_typedef_of_type function, adding
a clarifying comment and introducing --nested_anon_include so that we
can select just the typedef'ed anonymous structs.
Damn, I had commited just dwarves.c, here is the dwarves.h and pahole.c bits.
Signed-off-by: Davi Arnaut <davi@haxent.com.br>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Some are just typedefs, others are inside structs and in some cases its
useful to see the statistics for them, so add two new cmd line options:
-a, --anon_include include anonymous classes\
-A, --nested_anon_include include nested (inside other structs) anonymous classes
Commiter note: I've reworked several aspects of the patch, but mostly to
give better names for the new find_first_typedef_of_type function, adding
a clarifying comment and introducing --nested_anon_include so that we
can select just the typedef'ed anonymous structs.
Signed-off-by: Davi Arnaut <davi@haxent.com.br>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
So that we don't have to do all the code emission inside ctracer.c, add
a Makefile too that uses the kernel rpm files shipped by your distro to
easily build a module for your workstation, see README.ctracer, that was
updated to describe the steps needed to have ctracer running in your
machine.
Now to polish the relay code.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Previously it was being added to the CU tag list.
This also fixes a problem in cu__find_parameter_by_id where the second test in
the loop was actually outside the loop due to lack of {}.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Better, to match the readelf (binutils) and eu-readelf (elfutils) tools,
that on multi CU blobs is the way to go.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
That was preventing the correct printing of anonymous struct typedefs.
Signed-off-by: Davi Arnaut <davi@haxent.com.br>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Recheck if the typedef was emitted as part of the emission of its target, as
there are cases, like wait_queue_t in the Linux kernel, that is against struct
__wait_queue, that has a wait_queue_func_t member, a function typedef that has
as one of its parameters a... wait_queue_t, that will thus be emitted before
the function typedef, making a no go to redefine the typedef after struct
__wait_queue.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
And it even shrinks the lib a bit :-)
[acme@filo pahole]$ codiff build/libdwarves.so.before build/libdwarves.so
/home/acme/git/pahole/dwarves.c:
cus__emit_tag_definitions | -68
1 function changed, 68 bytes removed
[acme@filo pahole]$
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
I should have done this since day one, but was lazy, now somebody complained
on my blog and I thought it was time to bite this bullet, hopefully will be
helpful for people interested in helping improve these tools, as the comments
are useful for understanding the other dwarves too.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Now the functions that call cus__emit_enumeration_definitions should call
tag__print_decl_info, so that if it is a typedef we can just print "typedef ",
then call the enum printing routines.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
I.e. things like
typedef struct foo bar;
will emit the definition for struct foo before emitting the above line.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Where the 'if' should be just one of of the cases in the 'switch', and guess
what:
This:
diff --git a/dwarves.c b/dwarves.c
index c0ae7c8..34f29a1 100644
--- a/dwarves.c
+++ b/dwarves.c
@@ -2580,10 +2580,10 @@ static int cus__emit_typedef_definitions
}
type = cu__find_tag_by_id(cu, tdef->type);
- if (type->tag == DW_TAG_typedef)
- cus__emit_typedef_definitions(self, cu, type);
-
switch (type->tag) {
+ case DW_TAG_typedef:
+ cus__emit_typedef_definitions(self, cu, type);
+ break;
case DW_TAG_pointer_type:
ptr_type = cu__find_tag_by_id(cu, type->type);
if (ptr_type->tag != DW_TAG_subroutine_type)
Results in this:
[acme@newtoy pahole]$ codiff -V build/libdwarves.so.orig build/libdwarves.so
/home/acme/pahole/dwarves.c:
cus__emit_typedef_definitions | -18 # 466 -> 448
1 function changed, 18 bytes removed
[acme@newtoy pahole]$
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This is more like a bandaid, namespace clashes should be handled properly in
the future, but for now, well behaved projects will get the profits ;)
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
To show how many non inline functions receive as a parameter each of the structs
in a project, example:
[acme@newtoy ctracer_example]$ pahole --nr_methods vmlinux | sort -k2 -nr | head -5
file: 526
inode: 479
sk_buff: 386
sock: 383
dentry: 295
[acme@newtoy ctracer_example]$
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
tag__print on a DW_TAG_subprogram tag prints just the function prototype,
without the ending ";\", so if a user wants to print the whole function its
just a matter of calling tag__print + lexblock__(tag__function(tag), cu,
indent).
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This should not happen, but right now happens as we don't support all the C++
tags, so some types are not being collected when inside DW_TAG_namespace dies.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
And since there are no external users now, just unexport it, ditto
for tag__print_decl_info.
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Davi Arnaut
Arnaldo Carvalho de Melo
Arnaldo Carvalho de Melo
Arnaldo Carvalho de Melo