int
main(int argc, char *argv[])
{
START(argc, argv, "obj_cpp_cond_var");
if (argc != 2)
UT_FATAL("usage: %s file-name", argv[0]);
const char *path = argv[1];
nvobj::pool<struct root> pop;
try {
pop = nvobj::pool<struct root>::create(
path, LAYOUT, PMEMOBJ_MIN_POOL, S_IWUSR | S_IRUSR);
} catch (pmem::pool_error &pe) {
UT_FATAL("!pool::create: %s %s", pe.what(), path);
}
cond_zero_test(pop);
std::vector<reader_type> notify_functions(
{reader_mutex, reader_mutex_pred, reader_lock, reader_lock_pred,
reader_mutex_until, reader_mutex_until_pred, reader_lock_until,
reader_lock_until_pred, reader_mutex_for,
reader_mutex_for_pred, reader_lock_for, reader_lock_for_pred});
for (auto func : notify_functions) {
int reset_value = 42;
mutex_test(pop, true, false, write_notify, func);
pop.get_root()->counter = reset_value;
mutex_test(pop, true, true, write_notify, func);
pop.get_root()->counter = reset_value;
}
std::vector<reader_type> not_notify_functions(
{reader_mutex_until, reader_mutex_until_pred, reader_lock_until,
reader_lock_until_pred, reader_mutex_for,
reader_mutex_for_pred, reader_lock_for, reader_lock_for_pred});
for (auto func : not_notify_functions) {
int reset_value = 42;
mutex_test(pop, false, false, write_notify, func);
pop.get_root()->counter = reset_value;
mutex_test(pop, false, true, write_notify, func);
pop.get_root()->counter = reset_value;
}
/* pmemcheck related persist */
pmemobj_persist(pop.get_handle(), &(pop.get_root()->counter),
sizeof(pop.get_root()->counter));
pop.close();
DONE(nullptr);
}
int
main(int argc, char *argv[])
{
if (argc < 2)
fail("To few arguments for test case");
#ifndef ETHR_NO_THREAD_LIB
{
char *testcase;
send_my_pid();
testcase = argv[1];
if (ethr_init(NULL) != 0 || ethr_late_init(NULL) != 0)
fail("Failed to initialize the ethread library");
if (strcmp(testcase, "create_join_thread") == 0)
create_join_thread_test();
else if (strcmp(testcase, "equal_tids") == 0)
equal_tids_test();
else if (strcmp(testcase, "mutex") == 0)
mutex_test();
else if (strcmp(testcase, "try_lock_mutex") == 0)
try_lock_mutex_test();
else if (strcmp(testcase, "cond_wait") == 0)
cond_wait_test();
else if (strcmp(testcase, "broadcast") == 0)
broadcast_test();
else if (strcmp(testcase, "detached_thread") == 0)
detached_thread_test();
else if (strcmp(testcase, "max_threads") == 0)
max_threads_test();
else if (strcmp(testcase, "tsd") == 0)
tsd_test();
else if (strcmp(testcase, "spinlock") == 0)
spinlock_test();
else if (strcmp(testcase, "rwspinlock") == 0)
rwspinlock_test();
else if (strcmp(testcase, "rwmutex") == 0)
rwmutex_test();
else if (strcmp(testcase, "atomic") == 0)
atomic_test();
else if (strcmp(testcase, "dw_atomic_massage") == 0)
dw_atomic_massage_test();
else
skip("Test case \"%s\" not implemented yet", testcase);
succeed(NULL);
}
#else /* #ifndef ETHR_NO_THREAD_LIB */
skip("No ethread library to test");
#endif /* #ifndef ETHR_NO_THREAD_LIB */
return 0;
}
int thread_tests(void)
{
mutex_test();
event_test();
thread_sleep(200);
context_switch_test();
atomic_test();
return 0;
}
int
main(int argc, char *argv[])
{
START(argc, argv, "obj_cpp_shared_mutex");
if (argc != 2)
UT_FATAL("usage: %s file-name", argv[0]);
const char *path = argv[1];
nvobj::pool<root> pop;
try {
pop = nvobj::pool<root>::create(path, LAYOUT, PMEMOBJ_MIN_POOL,
S_IWUSR | S_IRUSR);
} catch (nvml::pool_error &pe) {
UT_FATAL("!pool::create: %s %s", pe.what(), path);
}
int expected = num_threads * num_ops * 2;
mutex_test(pop, writer, reader);
UT_ASSERTeq(pop.get_root()->counter, expected);
/* trylocks are not tested as exhaustively */
expected -= num_threads * 2;
mutex_test(pop, writer_trylock, reader_trylock);
UT_ASSERTeq(pop.get_root()->counter, expected);
/* pmemcheck related persist */
pmemobj_persist(pop.get_handle(), &(pop.get_root()->counter),
sizeof(pop.get_root()->counter));
pop.close();
DONE(NULL);
}
int thread_tests(void)
{
mutex_test();
semaphore_test();
event_test();
spinlock_test();
atomic_test();
thread_sleep(200);
context_switch_test();
preempt_test();
join_test();
return 0;
}
/**
*
* @brief Perform all selected benchmarks
* see config.h to select or to unselect
*
* @return N/A
*/
void BenchTask(void)
{
int autorun = 0, continuously = 0;
init_output(&continuously, &autorun);
bench_test_init();
PRINT_STRING(newline, output_file);
do {
PRINT_STRING(dashline, output_file);
PRINT_STRING("| S I M P L E S E R V I C E "
"M E A S U R E M E N T S | nsec |\n",
output_file);
PRINT_STRING(dashline, output_file);
task_start(RECVTASK);
call_test();
queue_test();
sema_test();
mutex_test();
memorymap_test();
mempool_test();
event_test();
mailbox_test();
pipe_test();
PRINT_STRING("| END OF TESTS "
" |\n",
output_file);
PRINT_STRING(dashline, output_file);
PRINT_STRING("PROJECT EXECUTION SUCCESSFUL\n",output_file);
} while (continuously && !kbhit());
WAIT_FOR_USER();
if (autorun) {
task_sleep(SECONDS(2));
}
output_close();
}
static int user_main(int argc, char *argv[])
{
int i;
/* Sample the memory usage now */
#ifndef CONFIG_DISABLE_SIGNALS
usleep(HALF_SECOND_USEC);
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmbefore = mallinfo();
g_mmprevious = g_mmbefore;
#else
(void)mallinfo(&g_mmbefore);
memcpy(&g_mmprevious, &g_mmbefore, sizeof(struct mallinfo));
#endif
#endif
printf("\nuser_main: Begin argument test\n");
printf("user_main: Started with argc=%d\n", argc);
/* Verify passed arguments */
if (argc != NARGS + 1)
{
printf("user_main: Error expected argc=%d got argc=%d\n",
NARGS+1, argc);
}
for (i = 0; i <= NARGS; i++)
{
printf("user_main: argv[%d]=\"%s\"\n", i, argv[i]);
}
for (i = 1; i <= NARGS; i++)
{
if (strcmp(argv[i], g_argv[i-1]) != 0)
{
printf("user_main: ERROR argv[%d]: Expected \"%s\" found \"%s\"\n",
i, g_argv[i-1], argv[i]);
}
}
check_test_memory_usage();
/* Check environment variables */
#ifndef CONFIG_DISABLE_ENVIRON
show_environment(true, true, true);
unsetenv(g_var1_name);
show_environment(false, true, true);
check_test_memory_usage();
clearenv();
show_environment(false, false, false);
check_test_memory_usage();
#endif
/* Top of test loop */
#if CONFIG_EXAMPLES_OSTEST_LOOPS > 1
for (i = 0; i < CONFIG_EXAMPLES_OSTEST_LOOPS; i++)
#elif CONFIG_EXAMPLES_OSTEST_LOOPS == 0
for (;;)
#endif
{
#if CONFIG_NFILE_DESCRIPTORS > 0
/* Checkout /dev/null */
printf("\nuser_main: /dev/null test\n");
dev_null();
check_test_memory_usage();
#endif
#ifdef CONFIG_ARCH_FPU
/* Check that the FPU is properly supported during context switching */
printf("\nuser_main: FPU test\n");
fpu_test();
check_test_memory_usage();
#endif
#ifdef CONFIG_SCHED_WAITPID
/* Check waitpid() and friends */
printf("\nuser_main: waitpid test\n");
waitpid_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthreads and pthread mutex */
printf("\nuser_main: mutex test\n");
mutex_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_PTHREAD) && defined(CONFIG_MUTEX_TYPES)
/* Verify recursive mutexes */
printf("\nuser_main: recursive mutex test\n");
recursive_mutex_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthread cancellation */
printf("\nuser_main: cancel test\n");
cancel_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthreads and semaphores */
printf("\nuser_main: semaphore test\n");
sem_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthreads and condition variables */
printf("\nuser_main: condition variable test\n");
#ifdef CONFIG_PRIORITY_INHERITANCE
printf("\n Skipping, Test logic incompatible with priority inheritance\n");
#else
cond_test();
check_test_memory_usage();
#endif
#endif
#if !defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_PTHREAD) && !defined(CONFIG_DISABLE_CLOCK)
/* Verify pthreads and condition variable timed waits */
printf("\nuser_main: timed wait test\n");
timedwait_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD)
/* Verify pthreads and message queues */
printf("\nuser_main: message queue test\n");
mqueue_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD) && !defined(CONFIG_DISABLE_CLOCK)
/* Verify pthreads and message queues */
printf("\nuser_main: timed message queue test\n");
timedmqueue_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_SIGNALS
/* Verify signal handlers */
printf("\nuser_main: signal handler test\n");
sighand_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_POSIX_TIMERS) && !defined(CONFIG_DISABLE_SIGNALS)
/* Verify posix timers */
printf("\nuser_main: POSIX timer test\n");
timer_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_PTHREAD) && CONFIG_RR_INTERVAL > 0
/* Verify round robin scheduling */
printf("\nuser_main: round-robin scheduler test\n");
rr_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthread barriers */
printf("\nuser_main: barrier test\n");
barrier_test();
check_test_memory_usage();
#endif
#if defined(CONFIG_PRIORITY_INHERITANCE) && !defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_PTHREAD)
/* Verify priority inheritance */
printf("\nuser_main: priority inheritance test\n");
priority_inheritance();
check_test_memory_usage();
#endif /* CONFIG_PRIORITY_INHERITANCE && !CONFIG_DISABLE_SIGNALS && !CONFIG_DISABLE_PTHREAD */
#ifdef CONFIG_ARCH_HAVE_VFORK
printf("\nuser_main: vfork() test\n");
vfork_test();
#endif
/* Compare memory usage at time ostest_main started until
* user_main exits. These should not be identical, but should
* be similar enough that we can detect any serious OS memory
* leaks.
*/
#ifndef CONFIG_DISABLE_SIGNALS
usleep(HALF_SECOND_USEC);
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmafter = mallinfo();
#else
(void)mallinfo(&g_mmafter);
#endif
printf("\nFinal memory usage:\n");
show_memory_usage(&g_mmbefore, &g_mmafter);
#endif
}
printf("user_main: Exitting\n");
return 0;
}
int test_inner(void)
{
pj_caching_pool caching_pool;
const char *filename;
int line;
int rc = 0;
mem = &caching_pool.factory;
pj_log_set_level(3);
pj_log_set_decor(param_log_decor);
rc = pj_init();
if (rc != 0) {
app_perror("pj_init() error!!", rc);
return rc;
}
//pj_dump_config();
pj_caching_pool_init( &caching_pool, NULL, 0 );
#if INCLUDE_ERRNO_TEST
DO_TEST( errno_test() );
#endif
#if INCLUDE_EXCEPTION_TEST
DO_TEST( exception_test() );
#endif
#if INCLUDE_OS_TEST
DO_TEST( os_test() );
#endif
#if INCLUDE_RAND_TEST
DO_TEST( rand_test() );
#endif
#if INCLUDE_LIST_TEST
DO_TEST( list_test() );
#endif
#if INCLUDE_POOL_TEST
DO_TEST( pool_test() );
#endif
#if INCLUDE_POOL_PERF_TEST
DO_TEST( pool_perf_test() );
#endif
#if INCLUDE_STRING_TEST
DO_TEST( string_test() );
#endif
#if INCLUDE_FIFOBUF_TEST
DO_TEST( fifobuf_test() );
#endif
#if INCLUDE_RBTREE_TEST
DO_TEST( rbtree_test() );
#endif
#if INCLUDE_HASH_TEST
DO_TEST( hash_test() );
#endif
#if INCLUDE_TIMESTAMP_TEST
DO_TEST( timestamp_test() );
#endif
#if INCLUDE_ATOMIC_TEST
DO_TEST( atomic_test() );
#endif
#if INCLUDE_MUTEX_TEST
DO_TEST( mutex_test() );
#endif
#if INCLUDE_TIMER_TEST
DO_TEST( timer_test() );
#endif
#if INCLUDE_SLEEP_TEST
DO_TEST( sleep_test() );
#endif
#if INCLUDE_THREAD_TEST
DO_TEST( thread_test() );
#endif
#if INCLUDE_SOCK_TEST
DO_TEST( sock_test() );
#endif
#if INCLUDE_SOCK_PERF_TEST
DO_TEST( sock_perf_test() );
#endif
#if INCLUDE_SELECT_TEST
DO_TEST( select_test() );
#endif
#if INCLUDE_UDP_IOQUEUE_TEST
DO_TEST( udp_ioqueue_test() );
#endif
#if PJ_HAS_TCP && INCLUDE_TCP_IOQUEUE_TEST
DO_TEST( tcp_ioqueue_test() );
#endif
#if INCLUDE_IOQUEUE_PERF_TEST
DO_TEST( ioqueue_perf_test() );
#endif
#if INCLUDE_IOQUEUE_UNREG_TEST
DO_TEST( udp_ioqueue_unreg_test() );
#endif
#if INCLUDE_ACTIVESOCK_TEST
DO_TEST( activesock_test() );
#endif
#if INCLUDE_FILE_TEST
DO_TEST( file_test() );
#endif
#if INCLUDE_SSLSOCK_TEST
DO_TEST( ssl_sock_test() );
#endif
#if INCLUDE_ECHO_SERVER
//echo_server();
//echo_srv_sync();
udp_echo_srv_ioqueue();
#elif INCLUDE_ECHO_CLIENT
if (param_echo_sock_type == 0)
param_echo_sock_type = pj_SOCK_DGRAM();
echo_client( param_echo_sock_type,
param_echo_server,
param_echo_port);
#endif
goto on_return;
on_return:
pj_caching_pool_destroy( &caching_pool );
PJ_LOG(3,("test", ""));
pj_thread_get_stack_info(pj_thread_this(), &filename, &line);
PJ_LOG(3,("test", "Stack max usage: %u, deepest: %s:%u",
pj_thread_get_stack_max_usage(pj_thread_this()),
filename, line));
if (rc == 0)
PJ_LOG(3,("test", "Looks like everything is okay!.."));
else
PJ_LOG(3,("test", "Test completed with error(s)"));
pj_shutdown();
return 0;
}
static int user_main(int argc, char *argv[])
#endif
{
int i;
/* Sample the memory usage now */
#ifndef CONFIG_DISABLE_SIGNALS
usleep(HALF_SECOND_USEC);
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmbefore = mallinfo();
g_mmprevious = g_mmbefore;
#else
(void)mallinfo(&g_mmbefore);
memcpy(&g_mmprevious, &g_mmbefore, sizeof(struct mallinfo));
#endif
#endif
printf("\nuser_main: Begin argument test\n");
printf("user_main: Started with argc=%d\n", argc);
/* Verify passed arguments */
if (argc != NARGS + 1)
{
printf("user_main: Error expected argc=%d got argc=%d\n",
NARGS+1, argc);
}
for (i = 0; i <= NARGS; i++)
{
printf("user_main: argv[%d]=\"%s\"\n", i, argv[i]);
}
for (i = 1; i <= NARGS; i++)
{
if (strcmp(argv[i], g_argv[i-1]) != 0)
{
printf("user_main: ERROR argv[%d]: Expected \"%s\" found \"%s\"\n",
i, g_argv[i-1], argv[i]);
}
}
check_test_memory_usage();
/* If retention of child status is enable, then suppress it for this task.
* This task may produce many, many children (especially if
* CONFIG_EXAMPLES_OSTEST_LOOPS) and it does not harvest their exit status.
* As a result, the test may fail inappropriately unless retention of
* child exit status is disabled.
*
* So basically, this tests that child status can be disabled, but cannot
* verify that status is retained correctly.
*/
#if defined(CONFIG_SCHED_HAVE_PARENT) && defined(CONFIG_SCHED_CHILD_STATUS)
{
struct sigaction sa;
int ret;
sa.sa_handler = SIG_IGN;
sa.sa_flags = SA_NOCLDWAIT;
ret = sigaction(SIGCHLD, &sa, NULL);
if (ret < 0)
{
printf("user_main: ERROR: sigaction failed: %d\n", errno);
}
}
#endif
/* Check environment variables */
#ifndef CONFIG_DISABLE_ENVIRON
show_environment(true, true, true);
unsetenv(g_var1_name);
show_environment(false, true, true);
check_test_memory_usage();
clearenv();
show_environment(false, false, false);
check_test_memory_usage();
#endif
/* Top of test loop */
#if CONFIG_EXAMPLES_OSTEST_LOOPS > 1
for (i = 0; i < CONFIG_EXAMPLES_OSTEST_LOOPS; i++)
#elif CONFIG_EXAMPLES_OSTEST_LOOPS == 0
for (;;)
#endif
{
#if CONFIG_NFILE_DESCRIPTORS > 0
/* Checkout /dev/null */
printf("\nuser_main: /dev/null test\n");
dev_null();
check_test_memory_usage();
#endif
#ifdef CONFIG_ARCH_FPU
/* Check that the FPU is properly supported during context switching */
printf("\nuser_main: FPU test\n");
fpu_test();
check_test_memory_usage();
#endif
/* Checkout task_restart() */
printf("\nuser_main: task_restart test\n");
restart_test();
check_test_memory_usage();
#ifdef CONFIG_SCHED_WAITPID
/* Check waitpid() and friends */
printf("\nuser_main: waitpid test\n");
waitpid_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthreads and pthread mutex */
printf("\nuser_main: mutex test\n");
mutex_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_PTHREAD) && defined(CONFIG_MUTEX_TYPES)
/* Verify recursive mutexes */
printf("\nuser_main: recursive mutex test\n");
recursive_mutex_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthread cancellation */
printf("\nuser_main: cancel test\n");
cancel_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthreads and semaphores */
printf("\nuser_main: semaphore test\n");
sem_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthreads and condition variables */
printf("\nuser_main: condition variable test\n");
#ifdef CONFIG_PRIORITY_INHERITANCE
printf("\n Skipping, Test logic incompatible with priority inheritance\n");
#else
cond_test();
check_test_memory_usage();
#endif
#endif
#if !defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_PTHREAD)
/* Verify pthreads and condition variable timed waits */
printf("\nuser_main: timed wait test\n");
timedwait_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD)
/* Verify pthreads and message queues */
printf("\nuser_main: message queue test\n");
mqueue_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_MQUEUE) && !defined(CONFIG_DISABLE_PTHREAD)
/* Verify pthreads and message queues */
printf("\nuser_main: timed message queue test\n");
timedmqueue_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_SIGNALS
/* Verify signal handlers */
printf("\nuser_main: signal handler test\n");
sighand_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_POSIX_TIMERS) && !defined(CONFIG_DISABLE_SIGNALS)
/* Verify posix timers */
printf("\nuser_main: POSIX timer test\n");
timer_test();
check_test_memory_usage();
#endif
#if !defined(CONFIG_DISABLE_PTHREAD) && CONFIG_RR_INTERVAL > 0
/* Verify round robin scheduling */
printf("\nuser_main: round-robin scheduler test\n");
rr_test();
check_test_memory_usage();
#endif
#ifndef CONFIG_DISABLE_PTHREAD
/* Verify pthread barriers */
printf("\nuser_main: barrier test\n");
barrier_test();
check_test_memory_usage();
#endif
#if defined(CONFIG_PRIORITY_INHERITANCE) && !defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_PTHREAD)
/* Verify priority inheritance */
printf("\nuser_main: priority inheritance test\n");
priority_inheritance();
check_test_memory_usage();
#endif /* CONFIG_PRIORITY_INHERITANCE && !CONFIG_DISABLE_SIGNALS && !CONFIG_DISABLE_PTHREAD */
#if defined(CONFIG_ARCH_HAVE_VFORK) && defined(CONFIG_SCHED_WAITPID) && \
!defined(CONFIG_DISABLE_SIGNALS)
printf("\nuser_main: vfork() test\n");
vfork_test();
#endif
/* Compare memory usage at time ostest_main started until
* user_main exits. These should not be identical, but should
* be similar enough that we can detect any serious OS memory
* leaks.
*/
#ifndef CONFIG_DISABLE_SIGNALS
usleep(HALF_SECOND_USEC);
#ifdef CONFIG_CAN_PASS_STRUCTS
g_mmafter = mallinfo();
#else
(void)mallinfo(&g_mmafter);
#endif
printf("\nFinal memory usage:\n");
show_memory_usage(&g_mmbefore, &g_mmafter);
#endif
}
printf("user_main: Exitting\n");
return 0;
}
/**
* \fn vm_segment_grow
* \brief Grow the size of the segment
* \param s
* \param size
* \brief The size by which we want the segment to grow
* \return A standard error code
* By the way, notice how it is only possible to grow a segment?
* Indeed that's by design. Segments can only grow, not shrink. If they could,
* they might cut into allocated data, and that's bad. If pages aren't in use
* anymore, paging should take care of those, so no need to worry about it here.
*
* \todo implement swapping and destroying of pages that have gone out of use.
*/
int vm_segment_grow(struct vm_segment* s, size_t size)
{
if (s == NULL || size <= 0 || s->parent == NULL)
return -E_INVALID_ARG;
/* Round size up if necessary */
if (size % PAGE_ALLOC_FACTOR != 0)
size += PAGE_ALLOC_FACTOR - size % PAGE_ALLOC_FACTOR;
struct vm_descriptor* d = s->parent;
retry:
/* This stuff is all critical ... */
mutex_lock(&d->lock);
int ns = s->size + size;
addr_t nend = (addr_t)s->virt_base + ns;
int ret = -E_OUTOFBOUNDS;
struct vm_segment* i;
/* Basically what we don't want is for our segments to overlap */
for (i = d->segments; i != NULL; i = i->next)
{
/* If we're verifying with our selves we are doing it wrong */
if (i == s)
continue;
addr_t start;
addr_t end;
if (mutex_test(&i->lock) == 0)
{
start = (addr_t)i->virt_base;
end = (addr_t)(i->virt_base + i->size);
}
else
{
mutex_unlock(&d->lock);
/** \todo Find a way to yield CPU time here */
goto retry;
}
/*
* Do some overlapping checks
*/
if ((nend > start && nend <= end) || (ns >= start && ns < end))
goto err;
if (ns <= start && nend >= end)
goto err;
}
/*
* Since we're not going to overlap, we can now complete the
* transaction. Also set the return value to success.
*/
mutex_lock(&s->lock);
s->size += size;
mutex_unlock(&s->lock);
ret = -E_SUCCESS;
err:
mutex_unlock(&d->lock);
return ret;
}