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LibDebug: Avoid creating the String("serenity/") a bazillion times

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We were creating and destroying this string twice for every LineInfo.
That's a lot of malloc() and free() during UE startup.
This commit is contained in:
Andreas Kling 2020-11-16 08:49:01 +01:00
parent fe7036d8f4
commit 4eb3cf68b7
1 changed files with 4 additions and 2 deletions
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6
Libraries/LibDebug/DebugInfo.cpp
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@ -115,12 +115,14 @@ void DebugInfo::prepare_lines()
all_lines.append(program.lines());
}
String serenity_slash("serenity/");
for (auto& line_info : all_lines) {
String file_path = line_info.file;
if (file_path.contains("Toolchain/") || file_path.contains("libgcc"))
continue;
if (file_path.contains("serenity/")) {
auto start_index = file_path.index_of("serenity/").value() + String("serenity/").length();
if (file_path.contains(serenity_slash)) {
auto start_index = file_path.index_of(serenity_slash).value() + serenity_slash.length();
file_path = file_path.substring(start_index, file_path.length() - start_index);
}
m_sorted_lines.append({ line_info.address, file_path, line_info.line });