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mesa: split error handling into its own file

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Also add _mesa_vsnprintf.
This commit is contained in:
nobled
2011-05-01 12:47:31 +00:00
committed by Marek Olšák
parent 60218b604a
commit 5ab088c7e2
7 changed files with 357 additions and 252 deletions
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276
src/mesa/main/errors.c Normal file
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/**
* \file errors.c
* Mesa debugging and error handling functions.
*/
/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "errors.h"
#include "imports.h"
#include "context.h"
#include "mtypes.h"
#include "version.h"
#define MAXSTRING 4000 /* for _mesa_vsnprintf() */
/**********************************************************************/
/** \name Diagnostics */
/*@{*/
static void
output_if_debug(const char *prefixString, const char *outputString,
GLboolean newline)
{
static int debug = -1;
/* Check the MESA_DEBUG environment variable if it hasn't
* been checked yet. We only have to check it once...
*/
if (debug == -1) {
char *env = _mesa_getenv("MESA_DEBUG");
/* In a debug build, we print warning messages *unless*
* MESA_DEBUG is 0. In a non-debug build, we don't
* print warning messages *unless* MESA_DEBUG is
* set *to any value*.
*/
#ifdef DEBUG
debug = (env != NULL && atoi(env) == 0) ? 0 : 1;
#else
debug = (env != NULL) ? 1 : 0;
#endif
}
/* Now only print the string if we're required to do so. */
if (debug) {
fprintf(stderr, "%s: %s", prefixString, outputString);
if (newline)
fprintf(stderr, "\n");
#if defined(_WIN32) && !defined(_WIN32_WCE)
/* stderr from windows applications without console is not usually
* visible, so communicate with the debugger instead */
{
char buf[4096];
_mesa_snprintf(buf, sizeof(buf), "%s: %s%s", prefixString, outputString, newline ? "\n" : "");
OutputDebugStringA(buf);
}
#endif
}
}
/**
* Return string version of GL error code.
*/
static const char *
error_string( GLenum error )
{
switch (error) {
case GL_NO_ERROR:
return "GL_NO_ERROR";
case GL_INVALID_VALUE:
return "GL_INVALID_VALUE";
case GL_INVALID_ENUM:
return "GL_INVALID_ENUM";
case GL_INVALID_OPERATION:
return "GL_INVALID_OPERATION";
case GL_STACK_OVERFLOW:
return "GL_STACK_OVERFLOW";
case GL_STACK_UNDERFLOW:
return "GL_STACK_UNDERFLOW";
case GL_OUT_OF_MEMORY:
return "GL_OUT_OF_MEMORY";
case GL_TABLE_TOO_LARGE:
return "GL_TABLE_TOO_LARGE";
case GL_INVALID_FRAMEBUFFER_OPERATION_EXT:
return "GL_INVALID_FRAMEBUFFER_OPERATION";
default:
return "unknown";
}
}
/**
* When a new type of error is recorded, print a message describing
* previous errors which were accumulated.
*/
static void
flush_delayed_errors( struct gl_context *ctx )
{
char s[MAXSTRING];
if (ctx->ErrorDebugCount) {
_mesa_snprintf(s, MAXSTRING, "%d similar %s errors",
ctx->ErrorDebugCount,
error_string(ctx->ErrorValue));
output_if_debug("Mesa", s, GL_TRUE);
ctx->ErrorDebugCount = 0;
}
}
/**
* Report a warning (a recoverable error condition) to stderr if
* either DEBUG is defined or the MESA_DEBUG env var is set.
*
* \param ctx GL context.
* \param fmtString printf()-like format string.
*/
void
_mesa_warning( struct gl_context *ctx, const char *fmtString, ... )
{
char str[MAXSTRING];
va_list args;
va_start( args, fmtString );
(void) _mesa_vsnprintf( str, MAXSTRING, fmtString, args );
va_end( args );
if (ctx)
flush_delayed_errors( ctx );
output_if_debug("Mesa warning", str, GL_TRUE);
}
/**
* Report an internal implementation problem.
* Prints the message to stderr via fprintf().
*
* \param ctx GL context.
* \param fmtString problem description string.
*/
void
_mesa_problem( const struct gl_context *ctx, const char *fmtString, ... )
{
va_list args;
char str[MAXSTRING];
static int numCalls = 0;
(void) ctx;
if (numCalls < 50) {
numCalls++;
va_start( args, fmtString );
_mesa_vsnprintf( str, MAXSTRING, fmtString, args );
va_end( args );
fprintf(stderr, "Mesa %s implementation error: %s\n",
MESA_VERSION_STRING, str);
fprintf(stderr, "Please report at bugs.freedesktop.org\n");
}
}
/**
* Record an OpenGL state error. These usually occur when the user
* passes invalid parameters to a GL function.
*
* If debugging is enabled (either at compile-time via the DEBUG macro, or
* run-time via the MESA_DEBUG environment variable), report the error with
* _mesa_debug().
*
* \param ctx the GL context.
* \param error the error value.
* \param fmtString printf() style format string, followed by optional args
*/
void
_mesa_error( struct gl_context *ctx, GLenum error, const char *fmtString, ... )
{
static GLint debug = -1;
/* Check debug environment variable only once:
*/
if (debug == -1) {
const char *debugEnv = _mesa_getenv("MESA_DEBUG");
#ifdef DEBUG
if (debugEnv && strstr(debugEnv, "silent"))
debug = GL_FALSE;
else
debug = GL_TRUE;
#else
if (debugEnv)
debug = GL_TRUE;
else
debug = GL_FALSE;
#endif
}
if (debug) {
if (ctx->ErrorValue == error &&
ctx->ErrorDebugFmtString == fmtString) {
ctx->ErrorDebugCount++;
}
else {
char s[MAXSTRING], s2[MAXSTRING];
va_list args;
flush_delayed_errors( ctx );
va_start(args, fmtString);
_mesa_vsnprintf(s, MAXSTRING, fmtString, args);
va_end(args);
_mesa_snprintf(s2, MAXSTRING, "%s in %s", error_string(error), s);
output_if_debug("Mesa: User error", s2, GL_TRUE);
ctx->ErrorDebugFmtString = fmtString;
ctx->ErrorDebugCount = 0;
}
}
_mesa_record_error(ctx, error);
}
/**
* Report debug information. Print error message to stderr via fprintf().
* No-op if DEBUG mode not enabled.
*
* \param ctx GL context.
* \param fmtString printf()-style format string, followed by optional args.
*/
void
_mesa_debug( const struct gl_context *ctx, const char *fmtString, ... )
{
#ifdef DEBUG
char s[MAXSTRING];
va_list args;
va_start(args, fmtString);
_mesa_vsnprintf(s, MAXSTRING, fmtString, args);
va_end(args);
output_if_debug("Mesa", s, GL_FALSE);
#endif /* DEBUG */
(void) ctx;
(void) fmtString;
}
/*@}*/