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UserspaceEmulator+LibC: Add support for Region-of-Interest profiling

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Ali Mohammad Pur 2021-08-08 03:00:17 +04:30 • committed by Ali Mohammad Pur
parent 18b2484985
commit 64ccf2196c
6 changed files with 51 additions and 1 deletions
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11
Userland/DevTools/UserspaceEmulator/Emulator_syscalls.cpp
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@ -30,6 +30,7 @@
extern bool g_dump_profile;
extern Optional<OutputFileStream> g_profile_stream;
extern bool g_in_region_of_interest;
namespace UserspaceEmulator {
@ -1118,7 +1119,7 @@ int Emulator::virt$ioctl([[maybe_unused]] int fd, unsigned request, [[maybe_unus
int Emulator::virt$emuctl(FlatPtr arg1, FlatPtr arg2, FlatPtr arg3)
{
auto* tracer = malloc_tracer();
if (!tracer)
if (arg1 <= 4 && !tracer)
return 0;
switch (arg1) {
case 1:
@ -1133,6 +1134,14 @@ int Emulator::virt$emuctl(FlatPtr arg1, FlatPtr arg2, FlatPtr arg3)
case 4:
tracer->target_did_change_chunk_size({}, arg3, arg2);
return 0;
case 5: // mark ROI start
if (g_in_region_of_interest)
return -EINVAL;
g_in_region_of_interest = true;
return 0;
case 6: // mark ROI end
g_in_region_of_interest = false;
return 0;
default:
return -EINVAL;
}