[Mesa-dev] [PATCH 19/25] ddebug: use an atomic increment when numbering files

[Nicolai Hähnle]

From: Nicolai Hähnle <nicolai.haehnle at amd.com>

---
 src/gallium/drivers/ddebug/dd_util.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/ddebug/dd_util.h b/src/gallium/drivers/ddebug/dd_util.h
index cfc0fb0ccce..bdfb7cc9163 100644
--- a/src/gallium/drivers/ddebug/dd_util.h
+++ b/src/gallium/drivers/ddebug/dd_util.h
@@ -28,20 +28,21 @@
 #ifndef DD_UTIL_H
 #define DD_UTIL_H
 
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
 #include <sys/stat.h>
 
 #include "c99_alloca.h"
 #include "os/os_process.h"
+#include "util/u_atomic.h"
 #include "util/u_debug.h"
 
 /* name of the directory in home */
 #define DD_DIR "ddebug_dumps"
 
 static inline void
 dd_get_debug_filename_and_mkdir(char *buf, size_t buflen, bool verbose)
 {
    static unsigned index;
    char proc_name[128], dir[256];
@@ -49,21 +50,22 @@ dd_get_debug_filename_and_mkdir(char *buf, size_t buflen, bool verbose)
    if (!os_get_process_name(proc_name, sizeof(proc_name))) {
       fprintf(stderr, "dd: can't get the process name\n");
       strcpy(proc_name, "unknown");
    }
 
    snprintf(dir, sizeof(dir), "%s/"DD_DIR, debug_get_option("HOME", "."));
 
    if (mkdir(dir, 0774) && errno != EEXIST)
       fprintf(stderr, "dd: can't create a directory (%i)\n", errno);
 
-   snprintf(buf, buflen, "%s/%s_%u_%08u", dir, proc_name, getpid(), index++);
+   snprintf(buf, buflen, "%s/%s_%u_%08u", dir, proc_name, getpid(),
+            p_atomic_inc_return(&index) - 1);
 
    if (verbose)
       fprintf(stderr, "dd: dumping to file %s\n", buf);
 }
 
 static inline FILE *
 dd_get_debug_file(bool verbose)
 {
    char name[512];
    FILE *f;
-- 
2.11.0