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/*
Minetest-c55
Copyright (C) 2010 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 "debug.h"
#include <stdio.h>
#include <stdlib.h>
#include <cstring>
/*
Debug output
*/
FILE *g_debugstreams[DEBUGSTREAM_COUNT] = {stderr, NULL};
void debugstreams_init(bool disable_stderr, const char *filename)
{
if(disable_stderr)
g_debugstreams[0] = NULL;
else
g_debugstreams[0] = stderr;
if(filename)
g_debugstreams[1] = fopen(filename, "a");
if(g_debugstreams[1])
{
fprintf(g_debugstreams[1], "\n\n-------------\n");
fprintf(g_debugstreams[1], " Separator \n");
fprintf(g_debugstreams[1], "-------------\n\n");
}
}
void debugstreams_deinit()
{
if(g_debugstreams[1] != NULL)
fclose(g_debugstreams[1]);
}
Debugbuf debugbuf(false);
std::ostream dstream(&debugbuf);
Debugbuf debugbuf_no_stderr(true);
std::ostream dstream_no_stderr(&debugbuf_no_stderr);
Nullstream dummyout;
/*
Assert
*/
void assert_fail(const char *assertion, const char *file,
unsigned int line, const char *function)
{
DEBUGPRINT("\nIn thread %lx:\n"
"%s:%d: %s: Assertion '%s' failed.\n",
(unsigned long)get_current_thread_id(),
file, line, function, assertion);
debug_stacks_print();
if(g_debugstreams[1])
fclose(g_debugstreams[1]);
abort();
}
/*
DebugStack
*/
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;
}
core::map<threadid_t, DebugStack*> g_debug_stacks;
JMutex g_debug_stacks_mutex;
void debug_stacks_init()
{
g_debug_stacks_mutex.Init();
}
void debug_stacks_print_to(std::ostream &os)
{
JMutexAutoLock lock(g_debug_stacks_mutex);
os<<"Debug stacks:"<<std::endl;
for(core::map<threadid_t, DebugStack*>::Iterator
i = g_debug_stacks.getIterator();
i.atEnd() == false; i++)
{
DebugStack *stack = i.getNode()->getValue();
stack->print(os, false);
}
}
void debug_stacks_print()
{
JMutexAutoLock lock(g_debug_stacks_mutex);
DEBUGPRINT("Debug stacks:\n");
for(core::map<threadid_t, DebugStack*>::Iterator
i = g_debug_stacks.getIterator();
i.atEnd() == false; i++)
{
DebugStack *stack = i.getNode()->getValue();
for(int i=0; i<DEBUGSTREAM_COUNT; i++)
{
if(g_debugstreams[i] != NULL)
stack->print(g_debugstreams[i], true);
}
}
}
DebugStacker::DebugStacker(const char *text)
{
threadid_t threadid = get_current_thread_id();
JMutexAutoLock lock(g_debug_stacks_mutex);
core::map<threadid_t, DebugStack*>::Node *n;
n = g_debug_stacks.find(threadid);
if(n != NULL)
{
m_stack = n->getValue();
}
else
{
/*DEBUGPRINT("Creating new debug stack for thread %x\n",
(unsigned int)threadid);*/
m_stack = new DebugStack(threadid);
g_debug_stacks.insert(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()
{
JMutexAutoLock 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;
/*DEBUGPRINT("Deleting debug stack for thread %x\n",
(unsigned int)threadid);*/
delete m_stack;
g_debug_stacks.remove(threadid);
}
}
#ifdef _MSC_VER
#if CATCH_UNHANDLED_EXCEPTIONS == 1
void se_trans_func(unsigned int u, EXCEPTION_POINTERS* pExp)
{
dstream<<"In trans_func.\n";
if(u == EXCEPTION_ACCESS_VIOLATION)
{
PEXCEPTION_RECORD r = pExp->ExceptionRecord;
dstream<<"Access violation at "<<r->ExceptionAddress
<<" write?="<<r->ExceptionInformation[0]
<<" address="<<r->ExceptionInformation[1]
<<std::endl;
throw FatalSystemException
("Access violation");
}
if(u == EXCEPTION_STACK_OVERFLOW)
{
throw FatalSystemException
("Stack overflow");
}
if(u == EXCEPTION_ILLEGAL_INSTRUCTION)
{
throw FatalSystemException
("Illegal instruction");
}
}
#endif
#endif
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