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#include "rust_internal.h"
#define KLOG_(...) \
KLOG(this, kern, __VA_ARGS__)
#define KLOG_ERR_(field, ...) \
KLOG_LVL(this, field, log_err, __VA_ARGS__)
rust_kernel::rust_kernel(rust_srv *srv, size_t num_threads) :
_region(srv, true),
_log(srv, NULL),
srv(srv),
num_threads(num_threads),
rval(0),
live_tasks(0),
env(srv->env)
{
isaac_init(this, &rctx);
create_schedulers();
}
rust_scheduler *
rust_kernel::create_scheduler(int id) {
_kernel_lock.lock();
rust_srv *srv = this->srv->clone();
rust_scheduler *sched =
new (this, "rust_scheduler") rust_scheduler(this, srv, id);
KLOG_("created scheduler: " PTR ", id: %d, index: %d",
sched, id, sched->list_index);
_kernel_lock.signal_all();
_kernel_lock.unlock();
return sched;
}
void
rust_kernel::destroy_scheduler(rust_scheduler *sched) {
_kernel_lock.lock();
KLOG_("deleting scheduler: " PTR ", name: %s, index: %d",
sched, sched->name, sched->list_index);
rust_srv *srv = sched->srv;
delete sched;
delete srv;
_kernel_lock.signal_all();
_kernel_lock.unlock();
}
void rust_kernel::create_schedulers() {
KLOG_("Using %d scheduler threads.", num_threads);
for(size_t i = 0; i < num_threads; ++i) {
threads.push(create_scheduler(i));
}
}
void rust_kernel::destroy_schedulers() {
for(size_t i = 0; i < num_threads; ++i) {
destroy_scheduler(threads[i]);
}
}
void
rust_kernel::log_all_scheduler_state() {
for(size_t i = 0; i < num_threads; ++i) {
threads[i]->log_state();
}
}
/**
* Checks for simple deadlocks.
*/
bool
rust_kernel::is_deadlocked() {
return false;
}
void
rust_kernel::log(uint32_t level, char const *fmt, ...) {
char buf[BUF_BYTES];
va_list args;
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
_log.trace_ln(NULL, level, buf);
va_end(args);
}
void
rust_kernel::fatal(char const *fmt, ...) {
char buf[BUF_BYTES];
va_list args;
va_start(args, fmt);
vsnprintf(buf, sizeof(buf), fmt, args);
_log.trace_ln(NULL, (uint32_t)0, buf);
exit(1);
va_end(args);
}
rust_kernel::~rust_kernel() {
destroy_schedulers();
}
void *
rust_kernel::malloc(size_t size, const char *tag) {
return _region.malloc(size, tag);
}
void *
rust_kernel::realloc(void *mem, size_t size) {
return _region.realloc(mem, size);
}
void rust_kernel::free(void *mem) {
_region.free(mem);
}
void
rust_kernel::signal_kernel_lock() {
_kernel_lock.lock();
_kernel_lock.signal_all();
_kernel_lock.unlock();
}
int rust_kernel::start_task_threads()
{
for(size_t i = 0; i < num_threads; ++i) {
rust_scheduler *thread = threads[i];
thread->start();
}
for(size_t i = 0; i < num_threads; ++i) {
rust_scheduler *thread = threads[i];
thread->join();
}
return rval;
}
rust_task *
rust_kernel::create_task(rust_task *spawner, const char *name) {
rust_scheduler *thread = threads[rand(&rctx) % num_threads];
scoped_lock with(thread->lock);
return thread->create_task(spawner, name);
}
void rust_kernel::wakeup_schedulers() {
for(size_t i = 0; i < num_threads; ++i) {
threads[i]->lock.signal_all();
}
}
#ifdef __WIN32__
void
rust_kernel::win32_require(LPCTSTR fn, BOOL ok) {
if (!ok) {
LPTSTR buf;
DWORD err = GetLastError();
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &buf, 0, NULL );
KLOG_ERR_(dom, "%s failed with error %ld: %s", fn, err, buf);
LocalFree((HLOCAL)buf);
I(this, ok);
}
}
#endif
//
// Local Variables:
// mode: C++
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
//
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