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- Reduced memory usage for backtraces on Linux.

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- `String.tokenize_all` would yield one too many empty tokens at the end.
- `String.replace` no longer depends on `String.split`.
This commit is contained in:
Christoffer Lerno
2025-12-31 10:08:00 +01:00
parent 26d733ef59
commit 739e91efa4
5 changed files with 85 additions and 61 deletions
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75
lib/std/os/linux/linux.c3
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@@ -236,56 +236,49 @@ fn void? backtrace_add_from_dlinfo(Allocator allocator, BacktraceList* list, voi
fn Backtrace? backtrace_line_parse(Allocator allocator, String string, String obj_name, String func_name, bool is_inlined)
{
@stack_mem(256; Allocator mem)
Splitter s = string.trim().tokenize(" at ");
String first = s.next() ?? NOT_FOUND~!;
String second = s.next() ?? NOT_FOUND~!;
uint line = 0;
String source = "";
if (!second.contains("?") && second.contains(":"))
{
String[] parts = string.trim().split(mem, " at ");
if (parts.len != 2) return NOT_FOUND?;
uint line = 0;
String source = "";
if (!parts[1].contains("?") && parts[1].contains(":"))
{
usz index = parts[1].rindex_of_char(':')!;
source = parts[1][:index];
line = parts[1][index + 1..].to_uint()!;
}
return {
.function = parts[0].copy(allocator),
.object_file = obj_name.copy(allocator),
.file = source.copy(allocator),
.line = line,
.allocator = allocator,
.is_inline = is_inlined
};
usz index = second.rindex_of_char(':')!;
source = second[:index];
line = second[index + 1..].to_uint()!;
}
return {
.function = first.copy(allocator),
.object_file = obj_name.copy(allocator),
.file = source.copy(allocator),
.line = line,
.allocator = allocator,
.is_inline = is_inlined
};
}
fn void? backtrace_add_addr2line(Allocator allocator, BacktraceList* list, void* addr, String addr2line, String obj_name, String func_name) @local
{
@stack_mem(1024; Allocator mem)
Splitter splitter = addr2line.tokenize("(inlined by)");
while (try part = splitter.next())
{
String[] inline_parts = addr2line.split(mem, "(inlined by)");
usz last = inline_parts.len - 1;
foreach (i, part : inline_parts)
bool is_inline = splitter.at_end();
Backtrace? trace = backtrace_line_parse(allocator, part, obj_name, func_name, is_inline);
if (catch trace)
{
bool is_inline = i != last;
Backtrace? trace = backtrace_line_parse(allocator, part, obj_name, func_name, is_inline);
if (catch trace)
{
list.push({
.function = func_name.copy(allocator),
.object_file = obj_name.copy(allocator),
.offset = (uptr)addr,
.file = "".copy(allocator),
.line = 0,
.allocator = allocator,
.is_inline = is_inline
list.push({
.function = func_name.copy(allocator),
.object_file = obj_name.copy(allocator),
.offset = (uptr)addr,
.file = "".copy(allocator),
.line = 0,
.allocator = allocator,
.is_inline = is_inline
});
continue;
}
list.push(trace);
continue;
}
};
list.push(trace);
}
}
fn void? backtrace_add_element(Allocator allocator, BacktraceList *list, void* addr) @local