* src/stacktrace.c (tracker): New global variable.
(sample_callbacks): Use dwfl_process_tracker_find_elf for caching.
(sysprof_init_dwfl): Use dwfl_begin_with_tracker.
(main): Initialize and clean up tracker.
---
src/stacktrace.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/src/stacktrace.c b/src/stacktrace.c
index 7b498e40..a6866bd5 100644
--- a/src/stacktrace.c
+++ b/src/stacktrace.c
@@ -611,6 +611,8 @@ static const Dwfl_Thread_Callbacks sample_thread_callbacks =
* Dwfl and statistics table for multiple processes *
****************************************************/
+Dwfl_Process_Tracker *tracker = NULL;
+
/* This echoes lib/dynamicsizehash.* with some necessary modifications. */
typedef struct
{
@@ -843,7 +845,7 @@ static char *debuginfo_path = NULL;
static const Dwfl_Callbacks sample_callbacks =
{
- .find_elf = dwfl_linux_proc_find_elf,
+ .find_elf = dwfl_process_tracker_find_elf,
.find_debuginfo = dwfl_standard_find_debuginfo,
.debuginfo_path = &debuginfo_path,
};
@@ -869,7 +871,7 @@ nop_find_debuginfo (Dwfl_Module *mod
__attribute__((unused)),
static const Dwfl_Callbacks sample_callbacks =
{
- .find_elf = dwfl_linux_proc_find_elf,
+ .find_elf = dwfl_process_tracker_find_elf,
.find_debuginfo = nop_find_debuginfo, /* work with CFI only */
};
@@ -992,7 +994,7 @@ sysprof_init_dwfl (struct sysprof_unwind_info *sui,
cached = true;
goto reuse;
}
- dwfl = dwfl_begin (&sample_callbacks);
+ dwfl = dwfl_begin_with_tracker (tracker);
int err = dwfl_linux_proc_report (dwfl, pid);
if (err < 0)
@@ -1486,6 +1488,7 @@
https://sourceware.org/cgit/elfutils/tree/README.eu-stacktrace?h=users/serhei/eu
(void)maxframes;
#else
fprintf(stderr, "\n=== starting eu-stacktrace ===\n");
+ tracker = dwfl_process_tracker_begin (&sample_callbacks);
/* TODO: For now, code the processing loop for sysprof only; generalize
later. */
assert (input_format == FORMAT_SYSPROF);
@@ -1569,5 +1572,7 @@
https://sourceware.org/cgit/elfutils/tree/README.eu-stacktrace?h=users/serhei/eu
if (output_fd != -1)
close (output_fd);
+ dwfl_process_tracker_end (tracker);
+
return EXIT_OK;
}
--
2.47.0
