* Author:
* Dick Porter (dick@ximian.com)
*
- * (C) 2004 Novell, Inc.
+ * (C) 2004-2006 Novell, Inc.
*/
#include <config.h>
#include <mono/io-layer/wapi.h>
#include <mono/io-layer/collection.h>
#include <mono/io-layer/handles-private.h>
+#include <mono/utils/atomic.h>
-#undef DEBUG
+#if 0
+// #define DEBUG(...) g_message(__VA_ARGS__)
+#else
+#define DEBUG(...)
+#endif
static pthread_t collection_thread_id;
-static gpointer collection_thread (gpointer args) G_GNUC_NORETURN;
static gpointer collection_thread (gpointer unused G_GNUC_UNUSED)
{
struct timespec sleepytime;
sleepytime.tv_sec = _WAPI_HANDLE_COLLECTION_UPDATE_INTERVAL;
sleepytime.tv_nsec = 0;
- while (1) {
+ while (_wapi_has_shut_down == FALSE) {
+ nanosleep (&sleepytime, NULL);
+
//_wapi_handle_dump ();
_wapi_handle_update_refs ();
- nanosleep (&sleepytime, NULL);
}
-#ifndef __GNUC__
- /* Even though we tell gcc that this function doesn't return,
- * other compilers won't see that.
- */
+ pthread_exit (NULL);
+
return(NULL);
-#endif
}
void _wapi_collection_init (void)
{
pthread_attr_t attr;
int ret;
-
- ret = pthread_attr_init (&attr);
- g_assert (ret == 0);
-
-#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE
-#ifdef __FreeBSD__
- ret = pthread_attr_setstacksize (&attr, 65536);
-#else
- ret = pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
-#endif
- g_assert (ret == 0);
+ int set_stacksize = 0;
+
+ retry:
+ ret = pthread_attr_init (&attr);
+ g_assert (ret == 0);
+
+#if defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE)
+ if (set_stacksize == 0) {
+ ret = pthread_attr_setstacksize (&attr, MAX (65536, PTHREAD_STACK_MIN));
+ g_assert (ret == 0);
+ } else if (set_stacksize == 1) {
+ ret = pthread_attr_setstacksize (&attr, 131072);
+ g_assert (ret == 0);
+ }
#endif
- ret = pthread_create (&collection_thread_id, &attr, collection_thread,
- NULL);
+ ret = pthread_create (&collection_thread_id, &attr, collection_thread,
+ NULL);
+ if (ret != 0 && set_stacksize < 2) {
+ set_stacksize++;
+ goto retry;
+ }
if (ret != 0) {
g_error ("%s: Couldn't create handle collection thread: %s",
__func__, g_strerror (ret));
void _wapi_handle_collect (void)
{
guint32 count = _wapi_shared_layout->collection_count;
- int i;
+ int i, thr_ret;
+
+ if (!_wapi_shm_enabled ())
+ return;
-#ifdef DEBUG
- g_message ("%s: (%d) Starting a collection", __func__, getpid ());
-#endif
+ DEBUG ("%s: (%d) Starting a collection", __func__, _wapi_getpid ());
/* Become the collection master */
- _WAPI_HANDLE_COLLECTION_UNSAFE;
+ thr_ret = _wapi_handle_lock_shared_handles ();
+ g_assert (thr_ret == 0);
-#ifdef DEBUG
- g_message ("%s: (%d) Master set", __func__, getpid ());
-#endif
+ thr_ret = _wapi_shm_sem_lock (_WAPI_SHARED_SEM_FILESHARE);
+ g_assert (thr_ret == 0);
+
+ DEBUG ("%s: (%d) Master set", __func__, _wapi_getpid ());
/* If count has changed, someone else jumped in as master */
if (count == _wapi_shared_layout->collection_count) {
+ guint32 too_old = (guint32)(time(NULL) & 0xFFFFFFFF) - _WAPI_HANDLE_COLLECTION_EXPIRED_INTERVAL;
+
for (i = 0; i < _WAPI_HANDLE_INITIAL_COUNT; i++) {
- struct _WapiHandleShared *shared;
- struct _WapiHandleSharedMetadata *meta;
- guint32 too_old = (guint32)(time(NULL) & 0xFFFFFFFF) - _WAPI_HANDLE_COLLECTION_EXPIRED_INTERVAL;
+ struct _WapiHandleShared *data;
- meta = &_wapi_shared_layout->metadata[i];
- if (meta->timestamp < too_old && meta->offset != 0) {
-#ifdef DEBUG
- g_message ("%s: (%d) Deleting metadata slot 0x%x handle 0x%x", __func__, getpid (), i, meta->offset);
-#endif
- memset (&_wapi_shared_layout->handles[meta->offset], '\0', sizeof(struct _WapiHandleShared));
- memset (&_wapi_shared_layout->metadata[i], '\0', sizeof(struct _WapiHandleSharedMetadata));
- }
-
- /* Need to blank any handles data that is no
- * longer pointed to by a metadata entry too
- */
- shared = &_wapi_shared_layout->handles[i];
- if (shared->stale == TRUE) {
-#ifdef DEBUG
- g_message ("%s: (%d) Deleting stale handle 0x%x", __func__, getpid (), i);
-#endif
- memset (&_wapi_shared_layout->handles[i], '\0',
- sizeof(struct _WapiHandleShared));
+ data = &_wapi_shared_layout->handles[i];
+ if (data->timestamp < too_old) {
+ DEBUG ("%s: (%d) Deleting handle 0x%x", __func__, _wapi_getpid (), i);
+ memset (&_wapi_shared_layout->handles[i], '\0', sizeof(struct _WapiHandleShared));
}
}
for (i = 0; i < _wapi_fileshare_layout->hwm; i++) {
struct _WapiFileShare *file_share = &_wapi_fileshare_layout->share_info[i];
- guint32 too_old = (guint32)(time(NULL) & 0xFFFFFFFF) - _WAPI_HANDLE_COLLECTION_EXPIRED_INTERVAL;
if (file_share->timestamp < too_old) {
memset (file_share, '\0',
}
}
- InterlockedIncrement (&_wapi_shared_layout->collection_count);
+ InterlockedIncrement ((gint32 *)&_wapi_shared_layout->collection_count);
}
- _WAPI_HANDLE_COLLECTION_SAFE;
+ thr_ret = _wapi_shm_sem_unlock (_WAPI_SHARED_SEM_FILESHARE);
+ g_assert (thr_ret == 0);
+
+ _wapi_handle_unlock_shared_handles ();
-#ifdef DEBUG
- g_message ("%s: (%d) Collection done", __func__, getpid ());
-#endif
+ DEBUG ("%s: (%d) Collection done", __func__, _wapi_getpid ());
}
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