#include "Capability.h"
#include "Stats.h"
#include "RtsFlags.h"
+#include "Storage.h"
#include "Schedule.h"
#include "Hash.h"
#include "Trace.h"
void
stopTaskManager (void)
{
- Task *task, *next;
-
debugTrace(DEBUG_sched,
"stopping task manager, %d tasks still running",
tasksRunning);
+ /* nothing to do */
+}
+
+
+void
+freeTaskManager (void)
+{
+ Task *task, *next;
+
+ debugTrace(DEBUG_sched, "freeing task manager");
ACQUIRE_LOCK(&sched_mutex);
- for (task = task_free_list; task != NULL; task = next) {
- next = task->next;
- stgFree(task);
+ for (task = all_tasks; task != NULL; task = next) {
+ next = task->all_link;
+ if (task->stopped) {
+ // We only free resources if the Task is not in use. A
+ // Task may still be in use if we have a Haskell thread in
+ // a foreign call while we are attempting to shut down the
+ // RTS (see conc059).
#if defined(THREADED_RTS)
- closeCondition(&task->cond);
- closeMutex(&task->lock);
+ closeCondition(&task->cond);
+ closeMutex(&task->lock);
#endif
+ stgFree(task);
+ }
}
+ all_tasks = NULL;
task_free_list = NULL;
+#if defined(THREADED_RTS)
+ freeThreadLocalKey(¤tTaskKey);
+#endif
RELEASE_LOCK(&sched_mutex);
}
ASSERT(myTask() == task);
#endif
+ task->cap = NULL;
taskTimeStamp(task);
task->stopped = rtsTrue;
tasksRunning--;
+
+ ACQUIRE_LOCK(&sched_mutex);
+ task->next = task_free_list;
+ task_free_list = task;
+ RELEASE_LOCK(&sched_mutex);
}
void
r = createOSThread(&tid, (OSThreadProc *)taskStart, task);
if (r != 0) {
- barf("startTask: Can't create new task");
+ sysErrorBelch("failed to create OS thread");
+ stg_exit(EXIT_FAILURE);
}
debugTrace(DEBUG_sched, "new worker task (taskCount: %d)", taskCount);