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/*
* Copyright (C) 2024 Free Software Foundation
*
* This program is free software ; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation ; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the program ; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <syscalls.h>
#include <testlib.h>
#include <mach/machine/vm_param.h>
#include <mach/std_types.h>
#include <mach/mach_types.h>
#include <mach/vm_wire.h>
#include <mach.user.h>
#include <gnumach.user.h>
/* Gsync flags. */
#ifndef GSYNC_SHARED
# define GSYNC_SHARED 0x01
# define GSYNC_QUAD 0x02
# define GSYNC_TIMED 0x04
# define GSYNC_BROADCAST 0x08
# define GSYNC_MUTATE 0x10
#endif
static uint32_t single_shared;
static struct {
uint32_t val1;
uint32_t val2;
} single_shared_quad;
static void test_single()
{
int err;
single_shared = 0;
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared, 0, 0, 100, GSYNC_TIMED);
ASSERT(err == KERN_TIMEDOUT, "gsync_wait did not timeout");
single_shared = 1;
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared, 0, 0, 100, GSYNC_TIMED);
ASSERT(err == KERN_INVALID_ARGUMENT, "gsync_wait on wrong value");
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared, 1, 0, 100, GSYNC_TIMED);
ASSERT(err == KERN_TIMEDOUT, "gsync_wait again on correct value did not timeout");
single_shared_quad.val1 = 1;
single_shared_quad.val2 = 2;
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared_quad, 99, 88,
100, GSYNC_TIMED | GSYNC_QUAD);
ASSERT(err == KERN_INVALID_ARGUMENT, "gsync_wait on wrong quad value");
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared_quad, 1, 2,
100, GSYNC_TIMED | GSYNC_QUAD);
ASSERT(err == KERN_TIMEDOUT, "gsync_wait again on correct value did not timeout");
err = gsync_wake(mach_task_self(), (vm_offset_t)&single_shared, 0, 0);
ASSERT_RET(err, "gsync_wake with nobody waiting");
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared, 1, 0, 100, GSYNC_TIMED);
ASSERT(err == KERN_TIMEDOUT, "gsync_wait not affected by previous gsync_wake");
err = gsync_wake(mach_task_self(), (vm_offset_t)&single_shared, 0, GSYNC_BROADCAST);
ASSERT_RET(err, "gsync_wake broadcast with nobody waiting");
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared, 1, 0, 100, GSYNC_TIMED);
ASSERT(err == KERN_TIMEDOUT, "gsync_wait not affected by previous gsync_wake");
err = gsync_wake(mach_task_self(), (vm_offset_t)&single_shared, 2, GSYNC_MUTATE);
ASSERT_RET(err, "gsync_wake nobody + mutate");
ASSERT(single_shared == 2, "gsync_wake single_shared did not mutate");
err = gsync_wake(mach_task_self(), (vm_offset_t)&single_shared, 0, 0);
ASSERT_RET(err, "gsync_wake nobody without mutate");
err = gsync_wake(mach_task_self(), (vm_offset_t)&single_shared, 0, 0);
ASSERT_RET(err, "gsync_wake 3a");
}
static void single_thread_setter(void *arg)
{
int err;
int val = (long)arg;
/* It should be enough to sleep a bit for our creator to call
gsync_wait(). To verify that the test is performed with the
correct sequence, we also change the value so if the wait is
called after our wake it will fail with KERN_INVALID_ARGUMENT */
msleep(100);
err = gsync_wake(mach_task_self(), (vm_offset_t)&single_shared, val, GSYNC_MUTATE);
ASSERT_RET(err, "gsync_wake from thread + mutate");
thread_terminate(mach_thread_self());
FAILURE("thread_terminate");
}
static void test_single_from_thread()
{
int err;
single_shared = 10;
test_thread_start(mach_task_self(), single_thread_setter, (void*)11);
err = gsync_wait(mach_task_self(), (vm_offset_t)&single_shared, 10, 0, 0, 0);
ASSERT_RET(err, "gsync_wait without timeout for wake from another thread");
ASSERT(single_shared == 11, "wake didn't mutate");
}
int main(int argc, char *argv[], int envc, char *envp[])
{
test_single_from_thread();
test_single();
return 0;
}
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