factor/vm/sampling_profiler.hpp

48 lines
1.6 KiB
C++

namespace factor {
struct profiling_sample_count {
// Number of samples taken before the safepoint that recorded the sample
fixnum sample_count;
// Number of samples taken during GC
fixnum gc_sample_count;
// Number of samples taken during unoptimized compiler
fixnum jit_sample_count;
// Number of samples taken during foreign code execution
fixnum foreign_sample_count;
// Number of samples taken during code execution in non-Factor threads
fixnum foreign_thread_sample_count;
profiling_sample_count(fixnum sample_count, fixnum gc_sample_count,
fixnum jit_sample_count, fixnum foreign_sample_count,
fixnum foreign_thread_sample_count)
: sample_count(sample_count),
gc_sample_count(gc_sample_count),
jit_sample_count(jit_sample_count),
foreign_sample_count(foreign_sample_count),
foreign_thread_sample_count(foreign_thread_sample_count) {}
bool empty() const {
return sample_count + gc_sample_count + jit_sample_count +
foreign_sample_count + foreign_thread_sample_count ==
0;
}
profiling_sample_count record_counts() volatile;
void clear() volatile;
};
struct profiling_sample {
// Sample counts
profiling_sample_count counts;
// Active thread during sample
cell thread;
// The callstack at safepoint time. Indexes to the beginning and ending
// code_block entries in the vm sample_callstacks array.
cell callstack_begin, callstack_end;
profiling_sample(profiling_sample_count const& counts, cell thread,
cell callstack_begin, cell callstack_end);
};
}