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https://github.com/RGBCube/serenity
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UserspaceEmulator: Move all the profiling details into the Emulator
Them being in the global namespace doesn't have a lot of fans, it seems.
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commit
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4 changed files with 55 additions and 42 deletions
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@ -18,10 +18,6 @@
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#include <string.h>
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bool g_report_to_debug = false;
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bool g_in_region_of_interest = true;
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bool g_dump_profile = false;
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unsigned g_profile_instruction_interval = 0;
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Optional<OutputFileStream> g_profile_stream;
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int main(int argc, char** argv, char** env)
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{
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@ -30,13 +26,15 @@ int main(int argc, char** argv, char** env)
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String profile_dump_path;
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FILE* profile_output_file { nullptr };
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bool enable_roi_mode { false };
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bool dump_profile { false };
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unsigned profile_instruction_interval { 0 };
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Core::ArgsParser parser;
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parser.set_stop_on_first_non_option(true);
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parser.add_option(g_report_to_debug, "Write reports to the debug log", "report-to-debug", 0);
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parser.add_option(pause_on_startup, "Pause on startup", "pause", 'p');
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parser.add_option(g_dump_profile, "Generate a ProfileViewer-compatible profile", "profile", 0);
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parser.add_option(g_profile_instruction_interval, "Set the profile instruction capture interval, 128 by default", "profile-interval", 'i', "#instructions");
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parser.add_option(dump_profile, "Generate a ProfileViewer-compatible profile", "profile", 0);
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parser.add_option(profile_instruction_interval, "Set the profile instruction capture interval, 128 by default", "profile-interval", 'i', "#instructions");
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parser.add_option(profile_dump_path, "File path for profile dump", "profile-file", 0, "path");
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parser.add_option(enable_roi_mode, "Enable Region-of-Interest mode for profiling", "roi", 0);
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@ -44,11 +42,8 @@ int main(int argc, char** argv, char** env)
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parser.parse(argc, argv);
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if (g_dump_profile && g_profile_instruction_interval == 0)
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g_profile_instruction_interval = 128;
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if (enable_roi_mode)
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g_in_region_of_interest = false;
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if (dump_profile && profile_instruction_interval == 0)
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profile_instruction_interval = 128;
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String executable_path;
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if (arguments[0].contains("/"sv))
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@ -60,22 +55,23 @@ int main(int argc, char** argv, char** env)
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return 1;
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}
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if (g_dump_profile && profile_dump_path.is_empty())
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if (dump_profile && profile_dump_path.is_empty())
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profile_dump_path = String::formatted("{}.{}.profile", executable_path, getpid());
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if (g_dump_profile) {
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OwnPtr<OutputFileStream> profile_stream;
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if (dump_profile) {
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profile_output_file = fopen(profile_dump_path.characters(), "w+");
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if (profile_output_file == nullptr) {
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auto error_string = strerror(errno);
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warnln("Failed to open '{}' for writing: {}", profile_dump_path, error_string);
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return 1;
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}
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g_profile_stream = OutputFileStream { profile_output_file };
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profile_stream = make<OutputFileStream>(profile_output_file);
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g_profile_stream->write_or_error(R"({"events":[)"sv.bytes());
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profile_stream->write_or_error(R"({"events":[)"sv.bytes());
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timeval tv {};
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gettimeofday(&tv, nullptr);
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g_profile_stream->write_or_error(
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profile_stream->write_or_error(
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String::formatted(
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R"~({{"type": "process_create", "parent_pid": 1, "executable": "{}", "pid": {}, "tid": {}, "timestamp": {}, "lost_samples": 0, "stack": []}})~",
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executable_path, getpid(), gettid(), tv.tv_sec * 1000 + tv.tv_usec / 1000)
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@ -89,6 +85,9 @@ int main(int argc, char** argv, char** env)
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// FIXME: It might be nice to tear down the emulator properly.
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auto& emulator = *new UserspaceEmulator::Emulator(executable_path, arguments, environment);
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emulator.set_profiling_details(dump_profile, profile_instruction_interval, profile_stream);
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emulator.set_in_region_of_interest(!enable_roi_mode);
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if (!emulator.load_elf())
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return 1;
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@ -110,8 +109,8 @@ int main(int argc, char** argv, char** env)
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rc = emulator.exec();
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if (g_dump_profile) {
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g_profile_stream->write_or_error(R"(]})"sv.bytes());
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}
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if (dump_profile)
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emulator.profile_stream().write_or_error(R"(]})"sv.bytes());
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return rc;
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}
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