[PATCH v2 2/2] kernel32/tests: Shorten time for negative half of litmus test for FlushProcessWriteBuffers().

[Jinoh Kang]

From: Jinoh Kang

Work around slow runtime of current FlushProcessWriteBuffers()
implementation on macOS.

The total iteration count becomes:

- positive half: 32768 * 1 (old) = 8192 * 4 (new)
- negative half: 32768 * 1 (old) > 8192 * 1 (new)
---
 dlls/kernel32/tests/virtual.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/dlls/kernel32/tests/virtual.c b/dlls/kernel32/tests/virtual.c
index fdc1958dc7e..a3080671df1 100644
--- a/dlls/kernel32/tests/virtual.c
+++ b/dlls/kernel32/tests/virtual.c
@@ -4655,7 +4655,7 @@ static LONG store_buffer_litmus_test( void (*WINAPI barrier0)(void), void (*WINA
         .num_slots = 64,

/* Increase if flaky, decrease if slow */
-        .num_generations = 32768,
+        .num_generations = 8192,

.reorderings = &reorderings,
     };
@@ -4726,12 +4726,12 @@ static void test_FlushProcessWriteBuffers(void)
      */

reorderings = 0;
-    for (i = 0; i < 1; i++)
+    for (i = 0; i < 4; i++)  /* run multiple times to reduce flakiness */
         reorderings += store_buffer_litmus_test( compiler_barrier, compiler_barrier );
     ok( reorderings, "expected write-read reordering with compiler barrier only (got %ld reorderings)\n", reorderings );

reorderings = 0;
-    for (i = 0; i < 1; i++)
+    for (i = 0; i < 1; i++)  /* TODO: FlushProcessWriteBuffers() is slow on macOS */
         reorderings = store_buffer_litmus_test( compiler_barrier, pFlushProcessWriteBuffers );
     ok( !reorderings, "expected sequential consistency with FlushProcessWriteBuffers (got %ld reorderings)\n", reorderings );
 }