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OpenCellular/test/utils.c
Nicolas Boichat 661259ebff tests: Split utils in 2 subtests 
utils test is a little too large for hammer's small RO, so we split
it in 2 test: utils and utils_str. Instead of one test that requires
about 8kb extra flash, we have 2 tests that take respectively
3.4kb (utils_str) and 4.6kb (utils) of extra flash.

BRANCH=none
BUG=chromium:726113
TEST=make BOARD=hammer tests -j
     util/flash_ec --board=hammer --image=build/hammer/test-utils.bin
     runtest => pass
     Repeat with test-utils_str.bin
TEST=Before this change:
       make runtests -j
       ./util/run_host_test utils | grep Running | sort > old
     Apply this change:
       make runtests -j
       (./util/run_host_test utils; ./util/run_host_test utils_str) \
               | grep Running | sort > new
       diff old new => No difference (except timing)

Change-Id: I917d572e671d6ce0a8799508761f55de7bd83133
Reviewed-on: https://chromium-review.googlesource.com/514604
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
2017-05-25 02:33:04 -07:00

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/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Test common utilities.
*/
#include "common.h"
#include "console.h"
#include "shared_mem.h"
#include "system.h"
#include "test_util.h"
#include "timer.h"
#include "util.h"
static int test_memmove(void)
{
int i;
timestamp_t t0, t1, t2, t3;
char *buf;
const int buf_size = 1000;
const int len = 400;
const int iteration = 1000;
TEST_ASSERT(shared_mem_acquire(buf_size, &buf) == EC_SUCCESS);
for (i = 0; i < len; ++i)
buf[i] = i & 0x7f;
for (i = len; i < buf_size; ++i)
buf[i] = 0;
t0 = get_time();
for (i = 0; i < iteration; ++i)
memmove(buf + 101, buf, len); /* unaligned */
t1 = get_time();
TEST_ASSERT_ARRAY_EQ(buf + 101, buf, len);
ccprintf(" (speed gain: %d ->", t1.val-t0.val);
t2 = get_time();
for (i = 0; i < iteration; ++i)
memmove(buf + 100, buf, len); /* aligned */
t3 = get_time();
ccprintf(" %d us) ", t3.val-t2.val);
TEST_ASSERT_ARRAY_EQ(buf + 100, buf, len);
/* Expected about 4x speed gain. Use 3x because it fluctuates */
#ifndef EMU_BUILD
/*
* The speed gain is too unpredictable on host, especially on
* buildbots. Skip it if we are running in the emulator.
*/
TEST_ASSERT((t1.val-t0.val) > (unsigned)(t3.val-t2.val) * 3);
#endif
/* Test small moves */
memmove(buf + 1, buf, 1);
TEST_ASSERT_ARRAY_EQ(buf + 1, buf, 1);
memmove(buf + 5, buf, 4);
memmove(buf + 1, buf, 4);
TEST_ASSERT_ARRAY_EQ(buf + 1, buf + 5, 4);
shared_mem_release(buf);
return EC_SUCCESS;
}
static int test_memcpy(void)
{
int i;
timestamp_t t0, t1, t2, t3;
char *buf;
const int buf_size = 1000;
const int len = 400;
const int dest_offset = 500;
const int iteration = 1000;
TEST_ASSERT(shared_mem_acquire(buf_size, &buf) == EC_SUCCESS);
for (i = 0; i < len; ++i)
buf[i] = i & 0x7f;
for (i = len; i < buf_size; ++i)
buf[i] = 0;
t0 = get_time();
for (i = 0; i < iteration; ++i)
memcpy(buf + dest_offset + 1, buf, len); /* unaligned */
t1 = get_time();
TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf, len);
ccprintf(" (speed gain: %d ->", t1.val-t0.val);
t2 = get_time();
for (i = 0; i < iteration; ++i)
memcpy(buf + dest_offset, buf, len); /* aligned */
t3 = get_time();
ccprintf(" %d us) ", t3.val-t2.val);
TEST_ASSERT_ARRAY_EQ(buf + dest_offset, buf, len);
/* Expected about 4x speed gain. Use 3x because it fluctuates */
#ifndef EMU_BUILD
/*
* The speed gain is too unpredictable on host, especially on
* buildbots. Skip it if we are running in the emulator.
*/
TEST_ASSERT((t1.val-t0.val) > (unsigned)(t3.val-t2.val) * 3);
#endif
memcpy(buf + dest_offset + 1, buf + 1, len - 1);
TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf + 1, len - 1);
/* Test small copies */
memcpy(buf + dest_offset, buf, 1);
TEST_ASSERT_ARRAY_EQ(buf + dest_offset, buf, 1);
memcpy(buf + dest_offset, buf, 4);
TEST_ASSERT_ARRAY_EQ(buf + dest_offset, buf, 4);
memcpy(buf + dest_offset + 1, buf, 1);
TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf, 1);
memcpy(buf + dest_offset + 1, buf, 4);
TEST_ASSERT_ARRAY_EQ(buf + dest_offset + 1, buf, 4);
shared_mem_release(buf);
return EC_SUCCESS;
}
/* Plain memset, used as a reference to measure speed gain */
static void *dumb_memset(void *dest, int c, int len)
{
char *d = (char *)dest;
while (len > 0) {
*(d++) = c;
len--;
}
return dest;
}
static int test_memset(void)
{
int i;
timestamp_t t0, t1, t2, t3;
char *buf;
const int buf_size = 1000;
const int len = 400;
const int iteration = 1000;
TEST_ASSERT(shared_mem_acquire(buf_size, &buf) == EC_SUCCESS);
t0 = get_time();
for (i = 0; i < iteration; ++i)
dumb_memset(buf, 1, len);
t1 = get_time();
TEST_ASSERT_MEMSET(buf, (char)1, len);
ccprintf(" (speed gain: %d ->", t1.val-t0.val);
t2 = get_time();
for (i = 0; i < iteration; ++i)
memset(buf, 1, len);
t3 = get_time();
TEST_ASSERT_MEMSET(buf, (char)1, len);
ccprintf(" %d us) ", t3.val-t2.val);
/* Expected about 4x speed gain. Use 3x because it fluctuates */
#ifndef EMU_BUILD
/*
* The speed gain is too unpredictable on host, especially on
* buildbots. Skip it if we are running in the emulator.
*/
TEST_ASSERT((t1.val-t0.val) > (unsigned)(t3.val-t2.val) * 3);
#endif
memset(buf, 128, len);
TEST_ASSERT_MEMSET(buf, (char)128, len);
memset(buf, -2, len);
TEST_ASSERT_MEMSET(buf, (char)-2, len);
memset(buf + 1, 1, len - 2);
TEST_ASSERT_MEMSET(buf + 1, (char)1, len - 2);
shared_mem_release(buf);
return EC_SUCCESS;
}
static int test_memchr(void)
{
char *buf = "1234";
TEST_ASSERT(memchr("123", '4', 8) == NULL);
TEST_ASSERT(memchr("123", '3', 2) == NULL);
TEST_ASSERT(memchr(buf, '3', 8) == buf + 2);
TEST_ASSERT(memchr(buf, '4', 4) == buf + 3);
return EC_SUCCESS;
}
static int test_uint64divmod_0(void)
{
uint64_t n = 8567106442584750ULL;
int d = 54870071;
int r = uint64divmod(&n, d);
TEST_CHECK(r == 5991285 && n == 156134415ULL);
}
static int test_uint64divmod_1(void)
{
uint64_t n = 8567106442584750ULL;
int d = 2;
int r = uint64divmod(&n, d);
TEST_CHECK(r == 0 && n == 4283553221292375ULL);
}
static int test_uint64divmod_2(void)
{
uint64_t n = 8567106442584750ULL;
int d = 0;
int r = uint64divmod(&n, d);
TEST_CHECK(r == 0 && n == 0ULL);
}
static int test_get_next_bit(void)
{
uint32_t mask = 0x10001010;
TEST_ASSERT(get_next_bit(&mask) == 28);
TEST_ASSERT(mask == 0x1010);
TEST_ASSERT(get_next_bit(&mask) == 12);
TEST_ASSERT(mask == 0x10);
TEST_ASSERT(get_next_bit(&mask) == 4);
TEST_ASSERT(mask == 0x0);
return EC_SUCCESS;
}
static int test_shared_mem(void)
{
int i;
int sz = shared_mem_size();
char *mem;
TEST_ASSERT(shared_mem_acquire(sz, &mem) == EC_SUCCESS);
TEST_ASSERT(shared_mem_acquire(sz, &mem) == EC_ERROR_BUSY);
for (i = 0; i < 256; ++i) {
memset(mem, i, sz);
TEST_ASSERT_MEMSET(mem, (char)i, sz);
if ((i & 0xf) == 0)
msleep(20); /* Yield to other tasks */
}
shared_mem_release(mem);
return EC_SUCCESS;
}
static int test_scratchpad(void)
{
system_set_scratchpad(0xfeed);
TEST_ASSERT(system_get_scratchpad() == 0xfeed);
return EC_SUCCESS;
}
static int test_cond_t(void)
{
cond_t c;
/* one-shot? */
cond_init_false(&c);
cond_set_true(&c);
TEST_ASSERT(cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
cond_set_false(&c);
TEST_ASSERT(cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
/* one-shot when initially true? */
cond_init_true(&c);
cond_set_false(&c);
TEST_ASSERT(cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
cond_set_true(&c);
TEST_ASSERT(cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
/* still one-shot even if set multiple times? */
cond_init_false(&c);
cond_set_true(&c);
cond_set_true(&c);
cond_set_true(&c);
cond_set_true(&c);
cond_set_true(&c);
cond_set_true(&c);
TEST_ASSERT(cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
cond_set_true(&c);
cond_set_false(&c);
cond_set_false(&c);
cond_set_false(&c);
cond_set_false(&c);
cond_set_false(&c);
TEST_ASSERT(cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
/* only the detected transition direction resets it */
cond_set_true(&c);
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(cond_went_true(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_true(&c));
cond_set_false(&c);
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
/* multiple transitions between checks should notice both edges */
cond_set_true(&c);
cond_set_false(&c);
cond_set_true(&c);
cond_set_false(&c);
cond_set_true(&c);
cond_set_false(&c);
TEST_ASSERT(cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_false(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_true(&c));
TEST_ASSERT(!cond_went_false(&c));
/* Still has last value? */
cond_set_true(&c);
cond_set_false(&c);
cond_set_true(&c);
cond_set_false(&c);
TEST_ASSERT(cond_is_false(&c));
cond_set_false(&c);
cond_set_true(&c);
cond_set_false(&c);
cond_set_true(&c);
TEST_ASSERT(cond_is_true(&c));
/* well okay then */
return EC_SUCCESS;
}
void run_test(void)
{
test_reset();
RUN_TEST(test_memmove);
RUN_TEST(test_memcpy);
RUN_TEST(test_memset);
RUN_TEST(test_memchr);
RUN_TEST(test_uint64divmod_0);
RUN_TEST(test_uint64divmod_1);
RUN_TEST(test_uint64divmod_2);
RUN_TEST(test_get_next_bit);
RUN_TEST(test_shared_mem);
RUN_TEST(test_scratchpad);
RUN_TEST(test_cond_t);
test_print_result();
}
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