diff options
Diffstat (limited to 'src/gallium/auxiliary/hud/hud_diskstat.c')
| -rw-r--r-- | src/gallium/auxiliary/hud/hud_diskstat.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/hud/hud_diskstat.c b/src/gallium/auxiliary/hud/hud_diskstat.c index d4306cdd95c..af6e62d9da5 100644 --- a/src/gallium/auxiliary/hud/hud_diskstat.c +++ b/src/gallium/auxiliary/hud/hud_diskstat.c @@ -35,6 +35,7 @@ #include "hud/hud_private.h" #include "util/list.h" #include "os/os_time.h" +#include "os/os_thread.h" #include "util/u_memory.h" #include <stdio.h> #include <unistd.h> @@ -81,6 +82,7 @@ struct diskstat_info */ static int gdiskstat_count = 0; static struct list_head gdiskstat_list; +pipe_static_mutex(gdiskstat_mutex); static struct diskstat_info * find_dsi_by_name(const char *n, int mode) @@ -244,16 +246,21 @@ hud_get_num_disks(bool displayhelp) char name[64]; /* Return the number of block devices and partitions. */ - if (gdiskstat_count) + pipe_mutex_lock(gdiskstat_mutex); + if (gdiskstat_count) { + pipe_mutex_unlock(gdiskstat_mutex); return gdiskstat_count; + } /* Scan /sys/block, for every object type we support, create and * persist an object to represent its different statistics. */ list_inithead(&gdiskstat_list); DIR *dir = opendir("/sys/block/"); - if (!dir) + if (!dir) { + pipe_mutex_unlock(gdiskstat_mutex); return 0; + } while ((dp = readdir(dir)) != NULL) { @@ -278,6 +285,7 @@ hud_get_num_disks(bool displayhelp) struct dirent *dpart; DIR *pdir = opendir(basename); if (!pdir) { + pipe_mutex_unlock(gdiskstat_mutex); closedir(dir); return 0; } @@ -312,6 +320,7 @@ hud_get_num_disks(bool displayhelp) puts(line); } } + pipe_mutex_unlock(gdiskstat_mutex); return gdiskstat_count; } |