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Merge branch 'concurrent-rand' into 'main'

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tests/slice-concurrent.c: avoid using rand() from multiple threads

See merge request GNOME/glib!3141
This commit is contained in:
Philip Withnall 2022-12-16 17:00:56 +00:00
commit aee72d3dce
1 changed files with 6 additions and 6 deletions
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12
glib/tests/slice-concurrent.c
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@ -49,18 +49,18 @@ thread_func (void *arg)
int bytes, f, t;
char *mem;
if (rand() % (N_ALLOCS / 20) == 0)
if (g_random_int_range (0, N_ALLOCS / 20) == 0)
g_test_message ("%c", 'a' - 1 + td->thread_id);
/* allocate block of random size and randomly fill */
bytes = rand() % MAX_BLOCK_SIZE + 1;
bytes = g_random_int_range (0, MAX_BLOCK_SIZE + 1);
mem = g_slice_alloc (bytes);
for (f = 0; f < bytes; f++)
mem[f] = rand();
mem[f] = (char) g_random_int ();
/* associate block with random thread */
t = rand() % N_THREADS;
t = g_random_int_range (0, N_THREADS);
g_mutex_lock (&tdata[t].to_free_mutex);
tdata[t].to_free[tdata[t].n_to_free] = mem;
tdata[t].bytes_to_free[tdata[t].n_to_free] = bytes;
@ -68,9 +68,9 @@ thread_func (void *arg)
g_mutex_unlock (&tdata[t].to_free_mutex);
/* shuffle thread execution order every once in a while */
if (rand() % 97 == 0)
if (g_random_int_range (0, 97) == 0)
{
if (rand() % 2)
if (g_random_boolean ())
g_thread_yield(); /* concurrent shuffling for single core */
else
g_usleep (1000); /* concurrent shuffling for multi core */