87 lines
2.3 KiB
V
87 lines
2.3 KiB
V
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[has_globals]
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module builtin
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#flag -I@VEXEROOT/thirdparty/libbacktrace
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#flag @VEXEROOT/thirdparty/libbacktrace/backtrace.o
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#include <backtrace.h>
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// NOTE: Don't mark this as a [typedef] or it may cause compiler errors!
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struct C.backtrace_state {
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// filename &char
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}
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type BacktraceErrorCallback = fn (data voidptr, msg &char, errnum int) voidptr
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type BacktraceFullCallback = fn (data voidptr, pc voidptr, filename &char, lineno int, func &char) &int
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fn C.backtrace_create_state(filename &char, threaded int, error_callback BacktraceErrorCallback, data voidptr) &C.backtrace_state
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fn C.backtrace_full(state &C.backtrace_state, skip int, cb BacktraceFullCallback, err_cb BacktraceErrorCallback, data voidptr) int
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__global bt_state = init_bt_state()
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fn init_bt_state() &C.backtrace_state {
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$if !tinyc {
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mut filename := &char(0)
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$if windows {
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filename = unsafe { string_from_wide(&&u16(g_main_argv)[0]).str }
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} $else {
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filename = unsafe { &&char(g_main_argv)[0] }
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}
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return C.backtrace_create_state(filename, 1, bt_error_handler, 0)
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}
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return &C.backtrace_state(0)
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}
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// for bt_error_callback
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// struct BacktraceData {
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// state &C.backtrace_state
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// }
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fn bt_print_callback(data voidptr, pc voidptr, filename_ptr &char, line int, fn_name_ptr &char) int {
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filename := if isnil(filename_ptr) { '???' } else { unsafe { filename_ptr.vstring() } }
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fn_name := if isnil(fn_name_ptr) {
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'???'
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} else {
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(unsafe { fn_name_ptr.vstring() }).replace('__', '.')
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}
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// keep it for later
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// pc_64 := u64(pc)
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println('$filename:$line: by $fn_name')
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return 0
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}
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fn bt_error_callback(data voidptr, msg_ptr &char, errnum int) {
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// if !isnil(data) && !isnil(data.state) && !isnil(data.state.filename) {
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// filename := unsafe{ data.state.filename.vstring() }
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// eprint('$filename: ')
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// }
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msg := unsafe { msg_ptr.vstring() }
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eprint('libbacktrace: $msg')
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if errnum > 0 {
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eprint(': ${C.strerror(errnum)}')
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}
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eprintln('')
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}
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// for backtrace_create_state only
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fn bt_error_handler(data voidptr, msg &char, errnum int) {
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eprint('libbacktrace: ')
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eprint(unsafe { msg.vstring() })
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if errnum > 0 {
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eprint(': ${C.strerror(errnum)}')
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}
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eprintln('')
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exit(1)
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}
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[noinline]
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fn print_libbacktrace(frames_to_skip int) {
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$if no_backtrace ? {
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return
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}
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// data := &BacktraceData{bt_state}
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C.backtrace_full(bt_state, frames_to_skip, bt_print_callback, bt_error_callback, 0)
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}
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