minetest/src/debug.cpp at master · basicinside/minetest · GitHub

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Minetest-c55

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 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 General Public License for more details.

You should have received a copy of the GNU 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>

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");

}

DEBUGPRINT("Debug streams initialized, disable_stderr=%d\n",

disable_stderr);

}

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

minetest/src/debug.cpp at master · basicinside/minetest · GitHub

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