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Profile the time it takes to source a file

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`:source` command will now generate timings if profile is enabled
in the debug option, to help find which script can be slow to load.

This should help for #1823
This commit is contained in:
Maxime Coste 2018-02-01 09:01:42 +11:00
parent e41b4ee65d
commit 90c16d2b0d
1 changed files with 9 additions and 0 deletions
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9
src/commands.cc
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@ -1208,6 +1208,10 @@ const CommandDesc source_cmd = {
filename_completer, filename_completer,
[](const ParametersParser& parser, Context& context, const ShellContext&) [](const ParametersParser& parser, Context& context, const ShellContext&)
{ {
const DebugFlags debug_flags = context.options()["debug"].get<DebugFlags>();
const bool profile = debug_flags & DebugFlags::Profile;
auto start_time = profile ? Clock::now() : Clock::time_point{};
String path = real_path(parse_filename(parser[0])); String path = real_path(parse_filename(parser[0]));
String file_content = read_file(path, true); String file_content = read_file(path, true);
try try
@ -1220,6 +1224,11 @@ const CommandDesc source_cmd = {
write_to_debug_buffer(format("{}:{}", parser[0], err.what())); write_to_debug_buffer(format("{}:{}", parser[0], err.what()));
throw; throw;
} }
using namespace std::chrono;
if (profile)
write_to_debug_buffer(format("sourcing '{}' took {} us", parser[0],
(size_t)duration_cast<microseconds>(Clock::now() - start_time).count()));
} }
}; };