gpu: nvgpu: posix: Multithreading for unit tests

Add a -j argument to enable running unit tests on several
threads. Also adds signal handling to prevent a fatal
error in one thread from killing the whole unit test
framework.

JIRA NVGPU-1043

Change-Id: I891a547640cd005a50ffa5c06367ed46c54de012
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1847740
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/userspace/src/args.c b/userspace/src/args.c
index d91c6f6e..cf17c983 100644
--- a/userspace/src/args.c
+++ b/userspace/src/args.c
@@ -36,11 +36,12 @@ static struct option core_opts[] = {
         { "no-color",           0, NULL, 'C' },
 
         { "unit-load-path",     1, NULL, 'L' },
+        { "num-threads",        1, NULL, 'j' },
 
         { NULL,                 0, NULL,  0  }
 };
 
-static const char *core_opts_str = "hvqCL:";
+static const char *core_opts_str = "hvqCL:j:";
 
 void core_print_help(struct unit_fw *fw)
 {
@@ -63,6 +64,8 @@ void core_print_help(struct unit_fw *fw)
 "                         corrupt that file.\n",
 "  -L, --unit-load-path <PATH>\n",
 "                         Path to where the unit test libraries reside.\n",
+"  -j, --num-threads <COUNT>\n",
+"                         Number of threads to use while running all tests.\n",
 "\n",
 "Note: mandatory arguments to long arguments are mandatory for short\n",
 "arguments as well.\n",
@@ -79,6 +82,7 @@ NULL
 static void set_arg_defaults(struct unit_fw_args *args)
 {
         args->unit_load_path = DEFAULT_ARG_UNIT_LOAD_PATH;
+        args->thread_count = 1;
 }
 
 /*
@@ -121,6 +125,13 @@ int core_parse_args(struct unit_fw *fw, int argc, char **argv)
                 case 'L':
                         args->unit_load_path = optarg;
                         break;
+                case 'j':
+                        args->thread_count = strtol(optarg, NULL, 10);
+                        if (args->thread_count == 0) {
+                                core_err(fw, "Invalid number of threads\n");
+                                return -1;
+                        }
+                        break;
                 case '?':
                         args->help = true;
                         return -1;