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mesa: new MESA_LOG_FILE env var to log errors, warnings, etc., to a file

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Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2012-06-25 11:43:03 -06:00
parent 0f530d2dff
commit 9ccf5bffe3
2 changed files with 14 additions and 2 deletions
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2
docs/envvars.html
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@ -42,6 +42,8 @@ sometimes be useful for debugging end-user issues.
printed to stderr.<br>
If the value of MESA_DEBUG is 'FP' floating point arithmetic errors will
generate exceptions.
<li>MESA_LOG_FILE - specifies a file name for logging all errors, warnings,
etc., rather than stderr
<li>MESA_TEX_PROG - if set, implement conventional texture env modes with
fragment programs (intended for developers only)
<li>MESA_TNL_PROG - if set, implement conventional vertex transformation

14
src/mesa/main/errors.c
View file

@ -801,12 +801,21 @@ output_if_debug(const char *prefixString, const char *outputString,
GLboolean newline)
{
static int debug = -1;
static FILE *fout = NULL;
/* Init the local 'debug' var once.
* Note: the _mesa_init_debug() function should have been called
* by now so MESA_DEBUG_FLAGS will be initialized.
*/
if (debug == -1) {
/* If MESA_LOG_FILE env var is set, log Mesa errors, warnings,
* etc to the named file. Otherwise, output to stderr.
*/
const char *logFile = _mesa_getenv("MESA_LOG_FILE");
if (logFile)
fout = fopen(logFile, "w");
if (!fout)
fout = stderr;
#ifdef DEBUG
/* in debug builds, print messages unless MESA_DEBUG="silent" */
if (MESA_DEBUG_FLAGS & DEBUG_SILENT)
@ -821,9 +830,10 @@ output_if_debug(const char *prefixString, const char *outputString,
/* Now only print the string if we're required to do so. */
if (debug) {
fprintf(stderr, "%s: %s", prefixString, outputString);
fprintf(fout, "%s: %s", prefixString, outputString);
if (newline)
fprintf(stderr, "\n");
fprintf(fout, "\n");
fflush(fout);
#if defined(_WIN32) && !defined(_WIN32_WCE)
/* stderr from windows applications without console is not usually