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UserspaceEmulator: Handle PerfEvent syscalls

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We only froward String setting and FlagPost creation for now, due to the
other performance events being nonsensical to forward.
We also record these signposts in the optionally generated profile.
This commit is contained in:
Hediadyoin1 2021-08-20 17:09:23 +02:00 • committed by Brian Gianforcaro
parent 045461b7cb
commit bce3bf9f1e
3 changed files with 63 additions and 7 deletions
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12
Userland/DevTools/UserspaceEmulator/Emulator.h
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@ -33,11 +33,13 @@ public:
Emulator(String const& executable_path, Vector<String> const& arguments, Vector<String> const& environment);
void set_profiling_details(bool should_dump_profile, size_t instruction_interval, OutputFileStream* profile_stream)
void set_profiling_details(bool should_dump_profile, size_t instruction_interval, OutputFileStream* profile_stream, NonnullOwnPtrVector<String>* profiler_strings, Vector<int>* profiler_string_id_map)
{
m_is_profiling = should_dump_profile;
m_profile_instruction_interval = instruction_interval;
m_profile_stream = profile_stream;
m_profiler_strings = profiler_strings;
m_profiler_string_id_map = profiler_string_id_map;
}
void set_in_region_of_interest(bool value)
@ -46,6 +48,9 @@ public:
}
OutputFileStream& profile_stream() { return *m_profile_stream; }
NonnullOwnPtrVector<String>& profiler_strings() { return *m_profiler_strings; }
Vector<int>& profiler_string_id_map() { return *m_profiler_string_id_map; }
bool is_profiling() const { return m_is_profiling; }
bool is_in_region_of_interest() const { return m_is_in_region_of_interest; }
size_t profile_instruction_interval() const { return m_profile_instruction_interval; }
@ -137,6 +142,8 @@ private:
int virt$gethostname(FlatPtr, ssize_t);
int virt$profiling_enable(pid_t);
int virt$profiling_disable(pid_t);
FlatPtr virt$perf_event(int type, FlatPtr arg1, FlatPtr arg2);
FlatPtr virt$perf_register_string(FlatPtr, size_t);
int virt$disown(pid_t);
int virt$purge(int mode);
u32 virt$mmap(u32);
@ -274,6 +281,9 @@ private:
RangeAllocator m_range_allocator;
OutputFileStream* m_profile_stream { nullptr };
Vector<int>* m_profiler_string_id_map { nullptr };
NonnullOwnPtrVector<String>* m_profiler_strings { nullptr };
bool m_is_profiling { false };
size_t m_profile_instruction_interval { 0 };
bool m_is_in_region_of_interest { false };