This is xnu-12377.1.9. See this file in: 
// Copyright (c) 2024 Apple Inc.  All rights reserved.

#pragma once

#include <stdint.h>
#include <stdbool.h>
#include <stdarg.h>
#include <stdlib.h>

#include <darwintest.h>
#include <darwintest_utils.h>

static void
sched_policy_speak(char *message)
{
	char *fun_level = getenv("SCHED_FUN");
	if ((fun_level != NULL) && (strcmp(fun_level, "MAX") == 0)) {
		char *say_args[] = {"/usr/local/bin/say_anything", "-v", "damon", "-r 210", T_NAME, message, NULL};
		pid_t pid;
		dt_launch_tool(&pid, say_args, false, NULL, NULL);
	}
}

static int sched_policy_passed_subtests = 0;

static void
sched_policy_final_pass(void)
{
	if (T_FAILCOUNT == 0) {
		T_PASS("🌈 All %d subtests passed! 🍻 ", sched_policy_passed_subtests);
		sched_policy_speak("Passed! Awesome job!");
	} else {
		sched_policy_speak("Failed, awww.");
	}
}

#define PASTER(a, b) a##_##b
#define SCHED_POLICY_TEST_NAME(policy_name, test_name) PASTER(policy_name, test_name)
#define SCHED_POLICY_T_DECL(test_name, description, ...) T_DECL(SCHED_POLICY_TEST_NAME(TEST_RUNQ_POLICY, test_name), description, T_META_TAG_VM_PREFERRED, ##__VA_ARGS__)

static unsigned int sched_policy_fails_so_far = 0;
static unsigned int sched_policy_passes_so_far = 0;
static bool sched_policy_setup_final_pass = false;
#define SCHED_PASS_MSG "  {🛡️ 🕰️  %d passed expects ✅}"
#define SCHED_FAIL_MSG "  {🧯🧐  %d/%d failed expects ❌}"
/* BEGIN IGNORE CODESTYLE */
#define SCHED_POLICY_PASS(message, ...) ({ \
	char expanded_message[256] = ""; \
	if (T_FAILCOUNT <= sched_policy_fails_so_far) { \
		strcat(expanded_message, message); \
		strcat(expanded_message, SCHED_PASS_MSG); \
		T_PASS(expanded_message, ##__VA_ARGS__, (T_PASSCOUNT - sched_policy_passes_so_far)); \
		sched_policy_passed_subtests++; \
	} else { \
		strcat(expanded_message, message); \
		strcat(expanded_message, SCHED_FAIL_MSG); \
		T_FAIL(expanded_message, ##__VA_ARGS__, (T_FAILCOUNT - sched_policy_fails_so_far), \
		    (T_PASSCOUNT - sched_policy_passes_so_far + T_FAILCOUNT - sched_policy_fails_so_far)); \
	} \
	sched_policy_fails_so_far = T_FAILCOUNT; \
	sched_policy_passes_so_far = T_PASSCOUNT; \
	if (sched_policy_setup_final_pass == false) { \
		T_ATEND(sched_policy_final_pass); \
		sched_policy_setup_final_pass = true; \
	} \
})
/* END IGNORE CODESTYLE */

/* Test scenario metadata printing utilities */

#define MAX_METADATA 64
#define MAX_METADATA_STR 256
static char metadata_log[MAX_METADATA][MAX_METADATA_STR];
static int metadata_ind = 0;

static void
sched_policy_push_metadata(char *metada_name, uint64_t value)
{
	snprintf(metadata_log[metadata_ind++], 256, "%s %llu", metada_name, value);
}

static void
sched_policy_pop_metadata(void)
{
	T_QUIET; T_EXPECT_GT(metadata_ind, 0, "no metadata left to pop");
	metadata_ind--;
}

#define MAX_METADA_DUMP_STR (MAX_METADATA_STR * MAX_METADATA)
static char metadata_dump[MAX_METADA_DUMP_STR];
static char *
sched_policy_dump_metadata(void)
{
	metadata_dump[0] = '(';
	for (int i = 0; i < metadata_ind; i++) {
		if (i == 0) {
			snprintf(&metadata_dump[1], MAX_METADATA_STR, metadata_log[i]);
		} else {
			strcat(metadata_dump, ", ");
			strcat(metadata_dump, metadata_log[i]);
		}
	}
	strcat(metadata_dump, ") 🗃️ ");
	return metadata_dump;
}