int start_native_gui(wxe_data *sd)
{
int res;
wxe_status_m = erl_drv_mutex_create((char *) "wxe_status_m");
wxe_status_c = erl_drv_cond_create((char *)"wxe_status_c");
wxe_batch_locker_m = erl_drv_mutex_create((char *)"wxe_batch_locker_m");
wxe_batch_locker_c = erl_drv_cond_create((char *)"wxe_batch_locker_c");
init_caller = driver_connected(sd->port);
if((res = erl_drv_thread_create((char *)"wxwidgets",
&wxe_thread,wxe_main_loop,(void *) sd->pdl,NULL)) == 0) {
erl_drv_mutex_lock(wxe_status_m);
for(;wxe_status == WXE_NOT_INITIATED;) {
erl_drv_cond_wait(wxe_status_c, wxe_status_m);
}
erl_drv_mutex_unlock(wxe_status_m);
return wxe_status;
} else {
wxString msg;
msg.Printf(wxT("Erlang failed to create wxe-thread %d\r\n"), res);
send_msg("error", &msg);
return -1;
}
}
// Should have erl_drv_mutex_lock(wxe_batch_locker_m);
// when entering this function and it should be released
// afterwards
int WxeApp::dispatch(wxList * batch, int blevel, int list_type)
{
int ping = 0;
// erl_drv_mutex_lock(wxe_batch_locker_m); must be locked already
while(true)
{
if (batch->size() > 0) {
for( wxList::compatibility_iterator node = batch->GetFirst();
node;
node = batch->GetFirst())
{
wxeCommand *event = (wxeCommand *)node->GetData();
batch->Erase(node);
switch(event->op) {
case WXE_BATCH_END:
{--blevel; }
break;
case WXE_BATCH_BEGIN:
{blevel++; }
break;
case WXE_DEBUG_PING:
// When in debugger we don't want to hang waiting for a BATCH_END
// that never comes, because a breakpoint have hit.
ping++;
if(ping > 2)
blevel = 0;
break;
case WXE_CB_RETURN:
// erl_drv_mutex_unlock(wxe_batch_locker_m); should be called after
// whatever cleaning is necessary
memcpy(cb_buff, event->buffer, event->len);
return blevel;
default:
erl_drv_mutex_unlock(wxe_batch_locker_m);
if(event->op < OPENGL_START) {
// fprintf(stderr, " c %d (%d) \r\n", event->op, blevel);
wxe_dispatch(*event);
} else {
gl_dispatch(event->op,event->buffer,event->caller,event->bin);
}
erl_drv_mutex_lock(wxe_batch_locker_m);
break;
}
delete event;
}
} else {
if((list_type == WXE_STORED) || (blevel <= 0 && list_type == WXE_NORMAL)) {
// erl_drv_mutex_unlock(wxe_batch_locker_m); should be called after
// whatever cleaning is necessary
return blevel;
}
// sleep until something happens
//fprintf(stderr, "%s:%d sleep %d %d %d %d \r\n", __FILE__, __LINE__, batch->size(), callback_returned, blevel, is_callback);fflush(stderr);
wxe_batch_caller++;
while(batch->size() == 0) {
erl_drv_cond_wait(wxe_batch_locker_c, wxe_batch_locker_m);
}
}
}
}
void WxeApp::dispatch_cb(wxList * batch, wxList * temp, ErlDrvTermData process) {
int callback_returned = 0;
while(true) {
if (batch->size() > 0) {
for( wxList::compatibility_iterator node = batch->GetFirst();
node;
node = batch->GetFirst())
{
wxeCommand *event = (wxeCommand *)node->GetData();
wxeMemEnv *memenv = getMemEnv(event->port);
batch->Erase(node);
if(event->caller == process || // Callbacks from CB process only
event->op == WXE_CB_START || // Recursive event callback allow
// Allow connect_cb during CB i.e. msg from wxe_server.
(memenv && event->caller == memenv->owner))
{
switch(event->op) {
case WXE_BATCH_END:
case WXE_BATCH_BEGIN:
case WXE_DEBUG_PING:
break;
case WXE_CB_RETURN:
memcpy(cb_buff, event->buffer, event->len);
callback_returned = 1;
return;
case WXE_CB_START:
// CB start from now accept message from CB process only
process = event->caller;
break;
default:
erl_drv_mutex_unlock(wxe_batch_locker_m);
if(event->op < OPENGL_START) {
// fprintf(stderr, " cb %d \r\n", event->op);
wxe_dispatch(*event);
} else {
gl_dispatch(event->op,event->buffer,event->caller,event->bin);
}
erl_drv_mutex_lock(wxe_batch_locker_m);
break;
if(callback_returned)
return;
}
delete event;
} else {
// fprintf(stderr, " sav %d \r\n", event->op);
temp->Append(event);
}
}
} else {
if(callback_returned) {
return;
}
// sleep until something happens
//fprintf(stderr, "%s:%d sleep %d %d %d %d \r\n", __FILE__, __LINE__, batch->size(), callback_returned, blevel, is_callback);fflush(stderr);
while(batch->size() == 0) {
erl_drv_cond_wait(wxe_batch_locker_c, wxe_batch_locker_m);
}
}
}
}
static void innostore_drv_stop(ErlDrvData handle)
{
PortState* state = (PortState*)handle;
// Grab the worker lock, in case we have an job running
erl_drv_mutex_lock(state->worker_lock);
// Signal the shutdown and wait until the current operation has completed
state->shutdown_flag = 1;
erl_drv_cond_signal(state->worker_cv);
while (state->op)
{
erl_drv_cond_wait(state->worker_cv, state->worker_lock);
}
// If the port state is not marked as READY, close the cursor and abort the txn
if (state->port_state != STATE_READY)
{
ib_cursor_close(state->cursor);
ib_trx_rollback(state->txn);
}
// No pending jobs and we have the lock again -- join our worker thread
erl_drv_cond_signal(state->worker_cv);
erl_drv_mutex_unlock(state->worker_lock);
erl_drv_thread_join(state->worker, 0);
// Cleanup
erl_drv_cond_destroy(state->worker_cv);
erl_drv_mutex_destroy(state->worker_lock);
driver_free(handle);
}
void bdberl_tpool_stop(TPool* tpool)
{
LOCK(tpool);
// Set the shutdown flag and broadcast a notification
tpool->shutdown = 1;
erl_drv_cond_broadcast(tpool->work_cv);
// Clean out the queue of pending jobs -- invoke their cleanup function
// Wait for until active_threads hits zero
while (tpool->active_threads > 0)
{
erl_drv_cond_wait(tpool->work_cv, tpool->lock);
}
// Join up with all the workers
int i = 0;
for (i = 0; i < tpool->thread_count; i++)
{
erl_drv_thread_join(tpool->threads[i], 0);
}
// Cleanup
erl_drv_cond_destroy(tpool->work_cv);
erl_drv_cond_destroy(tpool->cancel_cv);
driver_free(tpool->threads);
UNLOCK(tpool);
erl_drv_mutex_destroy(tpool->lock);
driver_free(tpool);
}
int start_native_gui(wxe_data *sd)
{
int res;
wxe_status_m = erl_drv_mutex_create((char *) "wxe_status_m");
wxe_status_c = erl_drv_cond_create((char *)"wxe_status_c");
wxe_batch_locker_m = erl_drv_mutex_create((char *)"wxe_batch_locker_m");
wxe_batch_locker_c = erl_drv_cond_create((char *)"wxe_batch_locker_c");
init_caller = driver_connected(sd->port_handle);
#ifdef __DARWIN__
res = erl_drv_steal_main_thread((char *)"wxwidgets",
&wxe_thread,wxe_main_loop,(void *) sd->pdl,NULL);
#else
ErlDrvThreadOpts *opts = erl_drv_thread_opts_create((char *)"wx thread");
opts->suggested_stack_size = 8192;
res = erl_drv_thread_create((char *)"wxwidgets",
&wxe_thread,wxe_main_loop,(void *) sd->pdl,opts);
erl_drv_thread_opts_destroy(opts);
#endif
if(res == 0) {
erl_drv_mutex_lock(wxe_status_m);
for(;wxe_status == WXE_NOT_INITIATED;) {
erl_drv_cond_wait(wxe_status_c, wxe_status_m);
}
erl_drv_mutex_unlock(wxe_status_m);
return wxe_status;
} else {
wxString msg;
msg.Printf(wxT("Erlang failed to create wxe-thread %d\r\n"), res);
send_msg("error", &msg);
return -1;
}
}
static void* bdberl_tpool_main(void* arg)
{
TPool* tpool = (TPool*)arg;
LOCK(tpool);
tpool->active_threads++;
while(1)
{
// Check for shutdown...
if (tpool->shutdown)
{
tpool->active_threads--;
erl_drv_cond_broadcast(tpool->work_cv);
UNLOCK(tpool);
return 0;
}
// Get the next job
TPoolJob* job = next_job(tpool);
if (job)
{
// Unlock to avoid blocking others
UNLOCK(tpool);
// Invoke the function
(*(job->main_fn))(job->arg);
// Relock
LOCK(tpool);
// Mark the job as not running (important for cancellation to know it's done)
job->running = 0;
// If the job was cancelled, signal the cancellation cv so that anyone waiting on the
// job knows it's complete
if (job->canceled)
{
erl_drv_cond_broadcast(tpool->cancel_cv);
}
// Cleanup the job (remove from active list, free, etc.)
cleanup_job(tpool, job);
}
else
{
// Wait for a job to come available then jump back to top of loop
erl_drv_cond_wait(tpool->work_cv, tpool->lock);
}
}
return 0;
}
void bdberl_tpool_cancel(TPool* tpool, TPoolJob* job)
{
LOCK(tpool);
// Remove the job from the pending queue
if (remove_pending_job(tpool, job))
{
// Job was removed from pending -- unlock and notify the job that it got canceled
UNLOCK(tpool);
if (job->cancel_fn)
{
(*(job->cancel_fn))(job->arg);
}
// Delete the job structure
driver_free(job);
return;
}
// Job not in the pending queue -- check the active queue.
if (is_active_job(tpool, job))
{
// Job is currently active -- mark it as cancelled (so we get notified) and wait for it
job->canceled = 1;
while (job->running)
{
erl_drv_cond_wait(tpool->cancel_cv, tpool->lock);
}
// Job is no longer running and should now be considered dead. Cleanup is handled by
// the worker.
UNLOCK(tpool);
return;
}
// Job was neither active nor pending -- it must have gotten run/cleaned up while we
// were waiting on the thread pool lock. Regardless, it's now done/gone and the cancel
// is a success.
UNLOCK(tpool);
}
static void* innostore_worker(void* arg)
{
PortState* state = (PortState*)arg;
erl_drv_mutex_lock(state->worker_lock);
while (1)
{
//
// NOTE: Holds the worker lock for the duration of the loop !!
//
if (state->shutdown_flag)
{
driver_free(state->work_buffer);
state->work_buffer = 0;
if (state->op != 0)
{
send_error_atom(state, "stopping");
state->op = 0;
}
erl_drv_cond_signal(state->worker_cv);
erl_drv_mutex_unlock(state->worker_lock);
break;
}
if (state->op)
{
state->op(state);
state->op = 0;
driver_free(state->work_buffer);
state->work_buffer = 0;
}
else
{
erl_drv_cond_wait(state->worker_cv, state->worker_lock);
}
}
return 0;
}
void enif_cond_wait(ErlNifCond *cnd, ErlNifMutex *mtx) { erl_drv_cond_wait(cnd,mtx); }
int
erts_cond_wait(erl_cond_t cnd, erl_mutex_t mtx)
{
erl_drv_cond_wait((ErlDrvCond *) cnd, (ErlDrvMutex *) mtx);
return 0;
}
void WxeApp::dispatch_cb(wxeFifo * batch, wxeFifo * temp, ErlDrvTermData process) {
wxeCommand *event;
erl_drv_mutex_lock(wxe_batch_locker_m);
while(true) {
while((event = batch->Get()) != NULL) {
erl_drv_mutex_unlock(wxe_batch_locker_m);
wxeMemEnv *memenv = getMemEnv(event->port);
// fprintf(stderr, " Ev %d %lu\r\n", event->op, event->caller);
if(event->caller == process || // Callbacks from CB process only
event->op == WXE_CB_START || // Event callback start change process
event->op == WXE_CB_DIED || // Event callback process died
// Allow connect_cb during CB i.e. msg from wxe_server.
(memenv && event->caller == memenv->owner)) {
switch(event->op) {
case -1:
case WXE_BATCH_END:
case WXE_BATCH_BEGIN:
case WXE_DEBUG_PING:
break;
case WXE_CB_RETURN:
if(event->len > 0) {
cb_buff = (char *) driver_alloc(event->len);
memcpy(cb_buff, event->buffer, event->len);
} // continue
case WXE_CB_DIED:
event->Delete();
return;
case WXE_CB_START:
// CB start from now accept message from CB process only
process = event->caller;
break;
default:
size_t start=temp->m_n;
if(event->op < OPENGL_START) {
// fprintf(stderr, " cb %d \r\n", event->op);
wxe_dispatch(*event);
} else {
gl_dispatch(event->op,event->buffer,event->caller,event->bin);
}
if(temp->m_n > start) {
erl_drv_mutex_lock(wxe_batch_locker_m);
// We have recursed dispatch_cb and messages for this
// callback may be saved on temp list move them
// to orig list
for(unsigned int i=start; i < temp->m_n; i++) {
wxeCommand *ev = &temp->m_q[(temp->m_first+i) % temp->m_max];
if(ev->caller == process) {
batch->Append(ev);
}
}
erl_drv_mutex_unlock(wxe_batch_locker_m);
}
break;
}
event->Delete();
} else {
// fprintf(stderr, " save %d %lu\r\n", event->op, event->caller);
temp->Append(event);
}
erl_drv_mutex_lock(wxe_batch_locker_m);
}
// sleep until something happens
// fprintf(stderr, "%s:%d sleep %d %d\r\n", __FILE__, __LINE__,
// batch->m_n, temp->m_n);fflush(stderr);
wxe_needs_signal = 1;
while(batch->m_n == 0) {
erl_drv_cond_wait(wxe_batch_locker_c, wxe_batch_locker_m);
}
wxe_needs_signal = 0;
}
}
int WxeApp::dispatch(wxeFifo * batch, int blevel, int list_type)
{
int ping = 0;
wxeCommand *event;
if(list_type == WXE_NORMAL) erl_drv_mutex_lock(wxe_batch_locker_m);
while(true) {
while((event = batch->Get()) != NULL) {
if(list_type == WXE_NORMAL) erl_drv_mutex_unlock(wxe_batch_locker_m);
switch(event->op) {
case -1:
break;
case WXE_BATCH_END:
{--blevel; }
break;
case WXE_BATCH_BEGIN:
{blevel++; }
break;
case WXE_DEBUG_PING:
// When in debugger we don't want to hang waiting for a BATCH_END
// that never comes, because a breakpoint have hit.
ping++;
if(ping > 2)
blevel = 0;
break;
case WXE_CB_RETURN:
if(event->len > 0) {
cb_buff = (char *) driver_alloc(event->len);
memcpy(cb_buff, event->buffer, event->len);
}
event->Delete();
return blevel;
default:
if(event->op < OPENGL_START) {
// fprintf(stderr, " c %d (%d) \r\n", event->op, blevel);
wxe_dispatch(*event);
} else {
gl_dispatch(event->op,event->buffer,event->caller,event->bin);
}
break;
}
event->Delete();
if(list_type == WXE_NORMAL) erl_drv_mutex_lock(wxe_batch_locker_m);
}
if(list_type == WXE_STORED)
return blevel;
if(blevel <= 0) { // list_type == WXE_NORMAL
if(wxe_queue->m_old) {
driver_free(wxe_queue->m_old);
wxe_queue->m_old = NULL;
}
erl_drv_mutex_unlock(wxe_batch_locker_m);
return blevel;
}
// sleep until something happens
//fprintf(stderr, "%s:%d sleep %d %d\r\n", __FILE__, __LINE__, batch->m_n, blevel);fflush(stderr);
wxe_needs_signal = 1;
while(batch->m_n == 0) {
erl_drv_cond_wait(wxe_batch_locker_c, wxe_batch_locker_m);
}
wxe_needs_signal = 0;
}
}
