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UserspaceEmulator: Use Core::Stream for writing profiling data

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This looks like it should compile, but UserspaceEmulator is currently
broken on any non-i686 platform anyways, so I can't test that.
This commit is contained in:
Tim Schumacher 2023-01-20 02:00:41 +01:00 • committed by Andreas Kling
parent 173cc5e6e0
commit 9d7606b8de
4 changed files with 25 additions and 30 deletions
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34
Userland/DevTools/UserspaceEmulator/main.cpp
View file

@ -5,7 +5,6 @@
*/
#include "Emulator.h"
#include <AK/FileStream.h>
#include <AK/Format.h>
#include <AK/LexicalPath.h>
#include <AK/StringBuilder.h>
@ -24,7 +23,6 @@ int main(int argc, char** argv, char** env)
Vector<StringView> arguments;
bool pause_on_startup { false };
DeprecatedString profile_dump_path;
FILE* profile_output_file { nullptr };
bool enable_roi_mode { false };
bool dump_profile { false };
unsigned profile_instruction_interval { 0 };
@ -58,29 +56,29 @@ int main(int argc, char** argv, char** env)
if (dump_profile && profile_dump_path.is_empty())
profile_dump_path = DeprecatedString::formatted("{}.{}.profile", LexicalPath(executable_path).basename(), getpid());
OwnPtr<OutputFileStream> profile_stream;
OwnPtr<Core::Stream::Stream> profile_stream;
OwnPtr<NonnullOwnPtrVector<DeprecatedString>> profile_strings;
OwnPtr<Vector<int>> profile_string_id_map;
if (dump_profile) {
profile_output_file = fopen(profile_dump_path.characters(), "w+");
if (profile_output_file == nullptr) {
char const* error_string = strerror(errno);
warnln("Failed to open '{}' for writing: {}", profile_dump_path, error_string);
auto profile_stream_or_error = Core::Stream::File::open(profile_dump_path, Core::Stream::OpenMode::Write);
if (profile_stream_or_error.is_error()) {
warnln("Failed to open '{}' for writing: {}", profile_dump_path, profile_stream_or_error.error());
return 1;
}
profile_stream = make<OutputFileStream>(profile_output_file);
profile_stream = profile_stream_or_error.release_value();
profile_strings = make<NonnullOwnPtrVector<DeprecatedString>>();
profile_string_id_map = make<Vector<int>>();
profile_stream->write_or_error(R"({"events":[)"sv.bytes());
profile_stream->write_entire_buffer(R"({"events":[)"sv.bytes()).release_value_but_fixme_should_propagate_errors();
timeval tv {};
gettimeofday(&tv, nullptr);
profile_stream->write_or_error(
DeprecatedString::formatted(
R"~({{"type": "process_create", "parent_pid": 1, "executable": "{}", "pid": {}, "tid": {}, "timestamp": {}, "lost_samples": 0, "stack": []}})~",
executable_path, getpid(), gettid(), tv.tv_sec * 1000 + tv.tv_usec / 1000)
.bytes());
profile_stream->write_entire_buffer(
DeprecatedString::formatted(
R"~({{"type": "process_create", "parent_pid": 1, "executable": "{}", "pid": {}, "tid": {}, "timestamp": {}, "lost_samples": 0, "stack": []}})~",
executable_path, getpid(), gettid(), tv.tv_sec * 1000 + tv.tv_usec / 1000)
.bytes())
.release_value_but_fixme_should_propagate_errors();
}
Vector<DeprecatedString> environment;
@ -116,13 +114,13 @@ int main(int argc, char** argv, char** env)
rc = emulator.exec();
if (dump_profile) {
emulator.profile_stream().write_or_error("], \"strings\": ["sv.bytes());
emulator.profile_stream().write_entire_buffer("], \"strings\": ["sv.bytes()).release_value_but_fixme_should_propagate_errors();
if (emulator.profiler_strings().size()) {
for (size_t i = 0; i < emulator.profiler_strings().size() - 1; ++i)
emulator.profile_stream().write_or_error(DeprecatedString::formatted("\"{}\", ", emulator.profiler_strings().at(i)).bytes());
emulator.profile_stream().write_or_error(DeprecatedString::formatted("\"{}\"", emulator.profiler_strings().last()).bytes());
emulator.profile_stream().write_entire_buffer(DeprecatedString::formatted("\"{}\", ", emulator.profiler_strings().at(i)).bytes()).release_value_but_fixme_should_propagate_errors();
emulator.profile_stream().write_entire_buffer(DeprecatedString::formatted("\"{}\"", emulator.profiler_strings().last()).bytes()).release_value_but_fixme_should_propagate_errors();
}
emulator.profile_stream().write_or_error("]}"sv.bytes());
emulator.profile_stream().write_entire_buffer("]}"sv.bytes()).release_value_but_fixme_should_propagate_errors();
}
return rc;
}