Hi,
I am trying to determine the arguments for a JS Function at runtime and
store them in a separate data structure.
Specifically, I am trying to do this in runtimeprofiler.cc::Optimizer()
function (void RuntimeProfiler::Optimize(JSFunction* function, const char*
reason) {)
I am able to extract the JS Function name in there as follows:
SmartArrayPointer<char> debug_name =
function->shared()->DebugName()->ToCString();
std::string func_name = debug_name.get();
PrintF(" optimizing func_name: %s\n", func_name.c_str());
And I see there is code to extract the calllers argument in runtime.cc in
the runtime functions:
HandleScope scope(isolate);
// Get all arguments of calling function (Function.prototype.bind).
int argc = 0;
SmartArrayPointer<Handle<Object> > arguments =
GetCallerArguments(isolate, 0, &argc);
// Don't count the this-arg.
if (argc > 0) {
RUNTIME_ASSERT(arguments[0].is_identical_to(this_object));
argc--;
} else {
RUNTIME_ASSERT(this_object->IsUndefined());
}
But when I try to do the same inside runtime-profiler.cc, I get compilation
errors. I made sure to include #include "src/runtime.h"
../deps/v8/src/runtime-profiler.cc:104:23: error: 'isolate' was not
declared in this scope
../deps/v8/src/runtime-profiler.cc:108:43: error: 'GetCallerArguments' was
not declared in this scope
../deps/v8/src/runtime-profiler.cc:111:51: error: 'this_object' was not
declared in this scope
../deps/v8/src/runtime-profiler.cc:111:63: error: 'RUNTIME_ASSERT' was not
declared in this scope
../deps/v8/src/runtime-profiler.cc:114:22: error: 'this_object' was not
declared in this scope
../deps/v8/src/runtime-profiler.cc:114:48: error: 'RUNTIME_ASSERT' was not
declared in this scope
Is there a better way to extract a JS Function's arguments at runtime, then
the direction I am looking at? If not, how should I be using the runtime
function
to get this information?
Malek
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