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gtestutils: Make test_rand_* thread-safe within a single test case

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Synchronize access to random number generator `test_run_rand` with
a lock to ensure that `g_test_rand_*` family of functions is
thread-safe.

The reseeding taking place between test case runs is intentionally left
unsynchronized. It is an error to continue using random number generator
after test case has already finished running. Lack of synchronization
here will make such erroneous use readily apparent with thread
sanitizer.
This commit is contained in:
Tomasz Miąsko 2018-11-02 00:00:00 +00:00
parent d3f5559780
commit aed3c0083b
1 changed files with 29 additions and 4 deletions
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33
glib/gtestutils.c
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@ -809,6 +809,7 @@ static gboolean test_mode_fatal = TRUE;
static gboolean g_test_run_once = TRUE;
static gboolean test_run_list = FALSE;
static gchar *test_run_seedstr = NULL;
G_LOCK_DEFINE_STATIC (test_run_rand);
static GRand *test_run_rand = NULL;
static gchar *test_run_name = "";
static GSList **test_filename_free_list;
@ -1437,7 +1438,13 @@ test_run_seed (const gchar *rseed)
gint32
g_test_rand_int (void)
{
return g_rand_int (test_run_rand);
gint32 r;
G_LOCK (test_run_rand);
r = g_rand_int (test_run_rand);
G_UNLOCK (test_run_rand);
return r;
}
/**
@ -1456,7 +1463,13 @@ gint32
g_test_rand_int_range (gint32 begin,
gint32 end)
{
return g_rand_int_range (test_run_rand, begin, end);
gint32 r;
G_LOCK (test_run_rand);
r = g_rand_int_range (test_run_rand, begin, end);
G_UNLOCK (test_run_rand);
return r;
}
/**
@ -1472,7 +1485,13 @@ g_test_rand_int_range (gint32 begin,
double
g_test_rand_double (void)
{
return g_rand_double (test_run_rand);
double r;
G_LOCK (test_run_rand);
r = g_rand_double (test_run_rand);
G_UNLOCK (test_run_rand);
return r;
}
/**
@ -1491,7 +1510,13 @@ double
g_test_rand_double_range (double range_start,
double range_end)
{
return g_rand_double_range (test_run_rand, range_start, range_end);
double r;
G_LOCK (test_run_rand);
r = g_rand_double_range (test_run_rand, range_start, range_end);
G_UNLOCK (test_run_rand);
return r;
}
/**