/*
 * Copyright 2012, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */


#include "CliStackTraceCommand.h"

#include <stdio.h>

#include <AutoLocker.h>

#include "CliContext.h"
#include "StackTrace.h"
#include "Team.h"
#include "UiUtils.h"


CliStackTraceCommand::CliStackTraceCommand()
        :
        CliCommand("print a stack trace of the current thread",
                "%s\n"
                "Prints a stack trace for the current thread.")
{
}


void
CliStackTraceCommand::Execute(int argc, const char* const* argv,
        CliContext& context)
{
        // get the current thread
        Team* team = context.GetTeam();
        AutoLocker<Team> teamLocker(team);
        Thread* thread = context.CurrentThread();
        if (thread == NULL) {
                printf("no current thread\n");
                return;
        }

        if (thread->State() != THREAD_STATE_STOPPED) {
                printf("Current thread is not stopped. Can't get stack trace.\n");
                return;
        }

        // get its stack trace
        StackTrace* stackTrace = thread->GetStackTrace();
        while (stackTrace == NULL) {
                context.WaitForEvent(CliContext::MSG_THREAD_STACK_TRACE_CHANGED);
                if (context.IsTerminating())
                        return;
                stackTrace = thread->GetStackTrace();
        }
        BReference<StackTrace> stackTraceReference(stackTrace);
                // hold a reference until we're done

        teamLocker.Unlock();

        // print the stack trace
        int32 frameCount = stackTrace->CountFrames();
        for (int32 i = 0; i < frameCount; i++) {
                StackFrame* frame = stackTrace->FrameAt(i);
                printf("%3" B_PRId32 "  %#" B_PRIx64 "  %#" B_PRIx64, i,
                        (uint64)frame->FrameAddress(), (uint64)frame->InstructionPointer());

                char functionName[512];
                UiUtils::FunctionNameForFrame(frame, functionName,
                        sizeof(functionName));
                printf("  %s\n", functionName);
        }
}