diff options
Diffstat (limited to 'doc/unw_backtrace.man')
| -rw-r--r-- | doc/unw_backtrace.man | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/unw_backtrace.man b/doc/unw_backtrace.man index 91a693ab..e1a4a9df 100644 --- a/doc/unw_backtrace.man +++ b/doc/unw_backtrace.man @@ -1,7 +1,7 @@ .\" *********************************** start of \input{common.tex} .\" *********************************** end of \input{common.tex} '\" t -.\" Manual page created with latex2man on Thu Dec 8 12:01:30 2022 +.\" Manual page created with latex2man on Thu Jan 5 15:33:00 2023 .\" NOTE: This file is generated, DO NOT EDIT. .de Vb .ft CW @@ -12,7 +12,7 @@ .fi .. -.TH "UNW\\_BACKTRACE" "3" "08 December 2022" "Programming Library " "Programming Library " +.TH "UNW\\_BACKTRACE" "3" "05 January 2023" "Programming Library " "Programming Library " .SH NAME unw_backtrace \-\- return backtrace for the calling program @@ -30,7 +30,8 @@ int size); int unw_backtrace2(void **buffer, int size, -unw_context_t *ctxt); +unw_context_t *ctxt, +int flag); .br .PP #include <execinfo.h> @@ -68,11 +69,16 @@ is linked against libunwind, it may end up calling unw_backtrace(). .PP +In case you want to obtain the backtrace from a specific unw_context_t, +you can call unw_backtrace2 +with that context passing 0 +for flag. If the unw_context_t is known to be a signal frame (i.e., from the third argument in a sigaction handler on linux), unw_backtrace2 can be used to collect -only the frames before the signal frame. +only the frames before the signal frame passing the UNW_INIT_SIGNAL_FRAME +flag. .PP .SH RETURN VALUE |