Initial files

1 files changed, 189 insertions, 0 deletions

diff --git a/src/debug.cpp b/src/debug.cpp
new file mode 100644
index 000000000..248941386
--- /dev/null
+++ b/src/debug.cpp
@@ -0,0 +1,189 @@
+/*
+(c) 2010 Perttu Ahola <celeron55@gmail.com>
+*/
+
+#include "debug.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef _WIN32
+	#define WIN32_LEAN_AND_MEAN
+	#include <windows.h>
+	#define sleep_ms(x) Sleep(x)
+#else
+	#include <unistd.h>
+	#define sleep_ms(x) usleep(x*1000)
+#endif
+
+/*
+	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;
+
+	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 %x:\n"
+			"%s:%d: %s: Assertion '%s' failed.\n",
+			(unsigned int)get_current_thread_id(),
+			file, line, function, assertion);
+	
+	debug_stacks_print();
+
+	if(g_debugstreams[1])
+		fclose(g_debugstreams[1]);
+
+	//sleep_ms(3000);
+
+	abort();
+}
+
+/*
+	DebugStack
+*/
+
+DebugStack::DebugStack(threadid_t id)
+{
+	threadid = id;
+	stack_i = 0;
+	stack_max_i = 0;
+}
+
+void DebugStack::print(FILE *file, bool everything)
+{
+	fprintf(file, "BEGIN STACK: Debug stack for thread %x:\n",
+			(unsigned int)threadid);
+
+	for(int i=0; i<stack_max_i; i++)
+	{
+		if(i == stack_i && everything == false)
+			continue;
+
+		if(everything == true && i == stack_i)
+			fprintf(file, "END OF STACK.\n"
+					"! Continuing beyond stack end:\n");
+
+		fprintf(file, "#%d  %s\n", i, stack[i]);
+	}
+
+	if(stack_i == DEBUG_STACK_SIZE)
+		fprintf(file, "Probably overflown.\n");
+}
+
+
+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()
+{
+	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);
+	}
+}
+