tenfourfox/js/xpconnect/src/XPCLog.cpp

98 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set ts=8 sts=4 et sw=4 tw=99: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Debug Logging support. */
#include "XPCLog.h"
#include "mozilla/Logging.h"
#include "prprf.h"
#include "mozilla/mozalloc.h"
#include <string.h>
#include <stdarg.h>
// this all only works for DEBUG...
#ifdef DEBUG
#define SPACE_COUNT 200
#define LINE_LEN 200
#define INDENT_FACTOR 2
#define CAN_RUN (g_InitState == 1 || (g_InitState == 0 && Init()))
static char* g_Spaces;
static int g_InitState = 0;
static int g_Indent = 0;
static PRLogModuleInfo* g_LogMod = nullptr;
static bool Init()
{
g_LogMod = PR_NewLogModule("xpclog");
g_Spaces = new char[SPACE_COUNT+1];
if (!g_LogMod || !g_Spaces || !MOZ_LOG_TEST(g_LogMod,LogLevel::Error)) {
g_InitState = 1;
XPC_Log_Finish();
return false;
}
memset(g_Spaces, ' ', SPACE_COUNT);
g_Spaces[SPACE_COUNT] = 0;
g_InitState = 1;
return true;
}
void
XPC_Log_Finish()
{
if (g_InitState == 1) {
delete [] g_Spaces;
// we'd like to properly cleanup the LogModule, but nspr owns that
g_LogMod = nullptr;
}
g_InitState = -1;
}
void
XPC_Log_print(const char* fmt, ...)
{
va_list ap;
char line[LINE_LEN];
va_start(ap, fmt);
PR_vsnprintf(line, sizeof(line)-1, fmt, ap);
va_end(ap);
if (g_Indent)
PR_LogPrint("%s%s",g_Spaces+SPACE_COUNT-(INDENT_FACTOR*g_Indent),line);
else
PR_LogPrint("%s",line);
}
bool
XPC_Log_Check(int i)
{
return CAN_RUN && MOZ_LOG_TEST(g_LogMod,LogLevel::Error);
}
void
XPC_Log_Indent()
{
if (INDENT_FACTOR*(++g_Indent) > SPACE_COUNT)
g_Indent-- ;
}
void
XPC_Log_Outdent()
{
if (--g_Indent < 0)
g_Indent++;
}
void
XPC_Log_Clear_Indent()
{
g_Indent = 0;
}
#endif