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auxilary/os: allow appending to GALLIUM_LOG_FILE

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If the log file specified by the GALLIUM_LOG_FILE begins with '+', open
the file in append mode.  This is useful to log all gallium output for
an entire piglit run, for example.

v2: put GALLIUM_LOG_FILE support inside an #ifdef DEBUG block.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Brian Paul 2016-06-14 20:35:53 -06:00
parent c99a0a8bce
commit bb1292e226
1 changed files with 13 additions and 2 deletions
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15
src/gallium/auxiliary/os/os_misc.c
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@ -69,10 +69,21 @@ os_log_message(const char *message)
static FILE *fout = NULL; static FILE *fout = NULL;
if (!fout) { if (!fout) {
#ifdef DEBUG
/* one-time init */ /* one-time init */
const char *filename = os_get_option("GALLIUM_LOG_FILE"); const char *filename = os_get_option("GALLIUM_LOG_FILE");
if (filename) if (filename) {
fout = fopen(filename, "w"); const char *mode = "w";
if (filename[0] == '+') {
/* If the filename is prefixed with '+' then open the file for
* appending instead of normal writing.
*/
mode = "a";
filename++; /* skip the '+' */
}
fout = fopen(filename, mode);
}
#endif
if (!fout) if (!fout)
fout = stderr; fout = stderr;
} }