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authorGravatar Yuchen Zeng <zyc@google.com>2017-03-06 14:20:26 -0800
committerGravatar Yuchen Zeng <zyc@google.com>2017-03-07 11:32:44 -0800
commitf0d6b88626223e2f8b77072fb628fdcf4a5f87ab (patch)
tree78587583940fe2e439284e764471dd2786a7f8ab /test/core/support
parent437cc199abff8eb69a4212d42c89dbb7703eb17d (diff)
Avoid repetitive division calculations
Diffstat (limited to 'test/core/support')
-rw-r--r--test/core/support/cpu_test.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/test/core/support/cpu_test.c b/test/core/support/cpu_test.c
index ca0fe0ccb5..7b9bf6c5e1 100644
--- a/test/core/support/cpu_test.c
+++ b/test/core/support/cpu_test.c
@@ -81,9 +81,12 @@ static void worker_thread(void *arg) {
uint32_t cpu;
unsigned r = 12345678;
unsigned i, j;
- for (i = 0; i < 1000 / grpc_test_slowdown_factor(); i++) {
+ /* Avoid repetitive division calculations */
+ int64_t max_i = 1000 / grpc_test_slowdown_factor();
+ int64_t max_j = 1000000 / grpc_test_slowdown_factor();
+ for (i = 0; i < max_i; i++) {
/* run for a bit - just calculate something random. */
- for (j = 0; j < 1000000 / grpc_test_slowdown_factor(); j++) {
+ for (j = 0; j < max_j; j++) {
r = (r * 17) & ((r - i) | (r * i));
}
cpu = gpr_cpu_current_cpu();