Class: RubyRunNative__

Inherits:
Object show all
Defined in:
ext/rubyrunnative__.c

Class Method Summary collapse

Class Method Details

.get_all_top_stacks ⇒ Object

This c routine implements RubyRunNative__.get_all_top_stacks (static method). For each thread in the space, it calls call_stack to simulate a Ruby caller invocation.



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# File 'ext/rubyrunnative__.c', line 108

VALUE c_getAllThreadTopStacks(VALUE self) 
{
	VALUE all_top_stack_trace;
	VALUE currThreadID;
	rb_thread_t thrObj, currThreadObj;

	/*
	We start with the current thread, whatever it is (likely main),
	and use the macro to locate its structure (rb_thread_current only
	returns the thread ID)
	*/
	currThreadID = rb_thread_current();
	Data_Get_Struct(currThreadID, struct rb_thread, currThreadObj); 

	/*
	Final result is a hash where the key is the thread ID and value
	an array of stack trace entries.
	*/
	all_top_stack_trace = rb_hash_new();

	/*
	Starts the loop without the dump thread itself.  
	Thread structs are double linked list in Ruby. We can start from any one
	and chain through the rest of them.
	*/
	thrObj = currThreadObj;

	for ( ;thrObj ;thrObj = thrObj->next) {	
		/* printf("Ruby thread id = %x\n", thrObj->thread); */
		if(thrObj != NULL) {
			rb_hash_aset(all_top_stack_trace, thrObj->thread, getTopThreadStack(thrObj));
		}

		// If we reached the start point, break. 
		// Note: Threads are double linked objects

		if (thrObj->next == currThreadObj) break;
	}

	return all_top_stack_trace;		
}