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| author | Nick Alcock <nick.alcock@oracle.com> | 2020-06-08 09:24:01 +0100 |
|---|---|---|
| committer | Nick Alcock <nick.alcock@oracle.com> | 2020-07-22 17:57:49 +0100 |
| commit | 2399827bfa1062c7f782499e6dcd9f988318d422 (patch) | |
| tree | ea65807b4e18793968c87cc905ac034239cd4cd9 /libctf | |
| parent | 9850ce4d7bb89d4f9216dd5eebc88156bf31b70b (diff) | |
| download | gdb-2399827bfa1062c7f782499e6dcd9f988318d422.zip gdb-2399827bfa1062c7f782499e6dcd9f988318d422.tar.gz gdb-2399827bfa1062c7f782499e6dcd9f988318d422.tar.bz2 | |
libctf: add ctf_ref
This allows you to bump the refcount on a ctf_file_t, so that you can
smuggle it out of iterators which open and close the ctf_file_t for you
around the loop body (like ctf_archive_iter).
You still can't use this to preserve a ctf_file_t for longer than the
lifetime of its containing entity (e.g. ctf_archive).
include/
* ctf-api.h (ctf_ref): New.
libctf/
* libctf.ver (ctf_ref): New.
* ctf-open.c (ctf_ref): Implement it.
Diffstat (limited to 'libctf')
| -rw-r--r-- | libctf/ChangeLog | 5 | ||||
| -rw-r--r-- | libctf/ctf-open.c | 11 | ||||
| -rw-r--r-- | libctf/libctf.ver | 1 |
3 files changed, 17 insertions, 0 deletions
diff --git a/libctf/ChangeLog b/libctf/ChangeLog index c22cba0..84f82fa 100644 --- a/libctf/ChangeLog +++ b/libctf/ChangeLog @@ -1,5 +1,10 @@ 2020-07-22 Nick Alcock <nick.alcock@oracle.com> + * libctf.ver (ctf_ref): New. + * ctf-open.c (ctf_ref): Implement it. + +2020-07-22 Nick Alcock <nick.alcock@oracle.com> + * ctf-inlines.h (ctf_forwardable_kind): New. * ctf-create.c (ctf_add_forward): Use it. diff --git a/libctf/ctf-open.c b/libctf/ctf-open.c index 05672f3..b7846bd 100644 --- a/libctf/ctf-open.c +++ b/libctf/ctf-open.c @@ -1620,6 +1620,17 @@ bad: return NULL; } +/* Bump the refcount on the specified CTF container, to allow export of + ctf_file_t's from iterators that open and close the ctf_file_t around the + loop. (This does not extend their lifetime beyond that of the ctf_archive_t + in which they are contained.) */ + +void +ctf_ref (ctf_file_t *fp) +{ + fp->ctf_refcnt++; +} + /* Close the specified CTF container and free associated data structures. Note that ctf_file_close() is a reference counted operation: if the specified file is the parent of other active containers, its reference count will be greater diff --git a/libctf/libctf.ver b/libctf/libctf.ver index 375dee8..93616d8 100644 --- a/libctf/libctf.ver +++ b/libctf/libctf.ver @@ -24,6 +24,7 @@ LIBCTF_1.0 { ctf_simple_open; ctf_create; ctf_close; + ctf_ref; ctf_file_close; ctf_cuname; |