util/buildbot/toolchain_mingw.cmake


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# name of the target operating system
SET(CMAKE_SYSTEM_NAME Windows)

# which compilers to use for C and C++
SET(CMAKE_C_COMPILER i586-mingw32msvc-gcc)
SET(CMAKE_CXX_COMPILER i586-mingw32msvc-g++)
SET(CMAKE_RC_COMPILER i586-mingw32msvc-windres)

# here is the target environment located
SET(CMAKE_FIND_ROOT_PATH /usr/i586-mingw32msvc)

# adjust the default behaviour of the FIND_XXX() commands:
# search headers and libraries in the target environment, search
# programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/


#include "porting.h"
#include "debug.h"
#include "exceptions.h"
#include "threads.h"
#include <stdio.h>
#include <stdlib.h>
#include <cstring>
#include <map>
#include <sstream>
#include "threading/mutex.h"
#include "threading/mutex_auto_lock.h"
#include "config.h"

#ifdef _MSC_VER
	#include <dbghelp.h>
	#include "version.h"
	#include "filesys.h"
#endif

/*
	Assert
*/

void sanity_check_fn(const char *assertion, const char *file,
		unsigned int line, const char *function)
{
	errorstream << std::endl << "In thread " << std::hex
		<< (unsigned long)get_current_thread_id() << ":" << std::endl;
	errorstream << file << ":" << line << ": " << function
		<< ": An engine assumption '" << assertion << "' failed." << std::endl;

	debug_stacks_print_to(errorstream);

	abort();
}

void fatal_error_fn(const char *msg, const char *file,
		unsigned int line, const char *function)
{
	errorstream << std::endl << "In thread " << std::hex
		<< (unsigned long)get_current_thread_id() << ":" << std::endl;
	errorstream << file << ":" << line << ": " << function
		<< ": A fatal error occured: " << msg << std::endl;

	debug_stacks_print_to(errorstream);

	abort();
}

/*
	DebugStack
*/

struct DebugStack
{
	DebugStack(threadid_t id);
	void print(FILE *file, bool everything);
	void print(std::ostream &os, bool everything);

	threadid_t threadid;
	char stack[DEBUG_STACK_SIZE][DEBUG_STACK_TEXT_SIZE];
	int stack_i; // Points to the lowest empty position
	int stack_max_i; // Highest i that was seen
};

DebugStack::DebugStack(threadid_t id)
{
	threadid = id;
	stack_i = 0;
	stack_max_i = 0;
	memset(stack, 0, DEBUG_STACK_SIZE*DEBUG_STACK_TEXT_SIZE);
}

void DebugStack::print(FILE *file, bool everything)
{
	fprintf(file, "DEBUG STACK FOR THREAD %lx:\n",
			(unsigned long)threadid);

	for(int i=0; i<stack_max_i; i++)
	{
		if(i == stack_i && everything == false)
			break;

		if(i < stack_i)
			fprintf(file, "#%d  %s\n", i, stack[i]);
		else
			fprintf(file, "(Leftover data: #%d  %s)\n", i, stack[i]);
	}

	if(stack_i == DEBUG_STACK_SIZE)
		fprintf(file, "Probably overflown.\n");
}

void DebugStack::print(std::ostream &os, bool everything)
{
	os<<"DEBUG STACK FOR THREAD "<<(unsigned long)threadid<<": "<<std::endl;

	for(int i=0; i<stack_max_i; i++)
	{
		if(i == stack_i && everything == false)
			break;

		if(i < stack_i)
			os<<"#"<<i<<"  "<<stack[i]<<std::endl;
		else
			os<<"(Leftover data: #"<<i<<"  "<<stack[i]<<")"<<std::endl;
	}

	if(stack_i == DEBUG_STACK_SIZE)
		os<<"Probably overflown."<<std::endl;
}

std::map<threadid_t, DebugStack*> g_debug_stacks;
Mutex g_debug_stacks_mutex;

void debug_stacks_init()
{
}

void debug_stacks_print_to(std::ostream &os)
{
	MutexAutoLock lock(g_debug_stacks_mutex);

	os<<"Debug stacks:"<<std::endl;

	for(std::map<threadid_t, DebugStack*>::iterator
			i = g_debug_stacks.begin();
			i != g_debug_stacks.end(); ++i)
	{
		i->second->print(os, false);
	}
}

void debug_stacks_print()
{
	debug_stacks_print_to(errorstream);
}

DebugStacker::DebugStacker(const char *text)
{
	threadid_t threadid = get_current_thread_id();

	MutexAutoLock lock(g_debug_stacks_mutex);

	std::map<threadid_t, DebugStack*>::iterator n;
	n = g_debug_stacks.find(threadid);
	if(n != g_debug_stacks.end())
	{
		m_stack = n->second;
	}
	else
	{
		/*DEBUGPRINT("Creating new debug stack for thread %x\n",
				(unsigned int)threadid);*/
		m_stack = new DebugStack(threadid);
		g_debug_stacks[threadid] = m_stack;
	}

	if(m_stack->stack_i >= DEBUG_STACK_SIZE)
	{
		m_overflowed = true;
	}
	else
	{
		m_overflowed = false;

		snprintf(m_stack->stack[m_stack->stack_i],
				DEBUG_STACK_TEXT_SIZE, "%s", text);
		m_stack->stack_i++;
		if(m_stack->stack_i > m_stack->stack_max_i)
			m_stack->stack_max_i = m_stack->stack_i;
	}
}

DebugStacker::~DebugStacker()
{
	MutexAutoLock lock(g_debug_stacks_mutex);

	if(m_overflowed == true)
		return;

	m_stack->stack_i--;

	if(m_stack->stack_i == 0)
	{
		threadid_t threadid = m_stack->threadid;