UNW_SE...UNCTION(3libunwind) Programming Library UNW_SE...UNCTION(3libunwind) NAME unw_set_iterate_phdr_function -- set dl_iterate_phdr implementation SYNOPSIS #include <libunwind.h> typedef int (*unw_iterate_phdr_callback_t)(struct dl_phdr_info *, size_t, void *); typedef int (*unw_iterate_phdr_func_t)(unw_iterate_phdr_callback_t, void *); void unw_set_iterate_phdr_function(unw_addr_space_t as, unw_iter- ate_phdr_func_t function); DESCRIPTION The unw_set_iterate_phdr_function() routine sets the dl_iterate_phdr imple- mentation of address space as to the function by argument function. The function will be called whenever libunwind needs to iterate over the pro- gram headers of the application. This is normally done by calling dl_iter- ate_phdr, but this function is not signal safe. With the help of a custom implementation caching and iterating over the program headers is also pos- sible in an signal-safe manner. Though the burden lies on the user of li- bunwind. THREAD AND SIGNAL SAFETY unw_set_iterate_phdr_function() is thread safe. If the local address space is passed in argument as, this routine is also safe to use from a signal handler. SEE ALSO libunwind(3libunwind), unw_create_addr_space(3libunwind), dl_iter- ate_phdr(3libunwind), AUTHOR Bert Wesarg Email: bert.wesarg@googlemail.com WWW: http://www.nongnu.org/libunwind/. Programming Library 29 August 2023 UNW_SE...UNCTION(3libunwind)
NAME | SYNOPSIS | DESCRIPTION | THREAD AND SIGNAL SAFETY | SEE ALSO | AUTHOR
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