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Allow to skip top stacktrace frames

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This is useful to hide the call of `PBD::stacktrace` itself.
This commit is contained in:
Robin Gareus 2021-07-12 03:59:23 +02:00
parent 9e2c5f4ffc
commit 7d39205350
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GPG key ID: A090BCE02CF57F04
2 changed files with 5 additions and 5 deletions
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2
libs/pbd/pbd/stacktrace.h
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@ -40,7 +40,7 @@
namespace PBD { namespace PBD {
LIBPBD_API void stacktrace (std::ostream& out, int levels = 0); LIBPBD_API void stacktrace (std::ostream& out, int levels = 0, int start_level = 0);
LIBPBD_API void trace_twb(); LIBPBD_API void trace_twb();
template<typename T> template<typename T>

8
libs/pbd/stacktrace.cc
View file

@ -49,7 +49,7 @@ PBD::trace_twb ()
#include <execinfo.h> #include <execinfo.h>
void void
PBD::stacktrace (std::ostream& out, int levels) PBD::stacktrace (std::ostream& out, int levels, int start)
{ {
void *array[200]; void *array[200];
size_t size; size_t size;
@ -63,7 +63,7 @@ PBD::stacktrace (std::ostream& out, int levels)
if (strings) { if (strings) {
for (i = 0; i < size && (levels == 0 || i < size_t(levels)); i++) { for (i = start; i < size && (levels == 0 || i < size_t(levels)); i++) {
out << " " << demangle (strings[i]) << std::endl; out << " " << demangle (strings[i]) << std::endl;
} }
@ -89,7 +89,7 @@ extern "C" {
#endif #endif
void void
PBD::stacktrace (std::ostream& out, int) PBD::stacktrace (std::ostream& out, int levels, int start)
{ {
#ifdef DEBUG #ifdef DEBUG
const size_t levels = 62; // does not support more then 62 levels of stacktrace const size_t levels = 62; // does not support more then 62 levels of stacktrace
@ -112,7 +112,7 @@ PBD::stacktrace (std::ostream& out, int)
symbol->MaxNameLen = 255; symbol->MaxNameLen = 255;
symbol->SizeOfStruct = sizeof (SYMBOL_INFO); symbol->SizeOfStruct = sizeof (SYMBOL_INFO);
for (i = 0; i < frames; ++i) { for (i = start; i < frames && (levels == 0 || i < levels); ++i) {
SymFromAddr (process, (DWORD64)(stack[i]), 0, symbol); SymFromAddr (process, (DWORD64)(stack[i]), 0, symbol);
out << string_compose ("%1: %2 - %3\n", frames - i - 1, symbol->Name, symbol->Address); out << string_compose ("%1: %2 - %3\n", frames - i - 1, symbol->Name, symbol->Address);
} }