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-rw-r--r--implement.h25
1 files changed, 17 insertions, 8 deletions
diff --git a/implement.h b/implement.h
index 670d948..3d96483 100644
--- a/implement.h
+++ b/implement.h
@@ -324,16 +324,21 @@ struct pthread_rwlockattr_t_
int pshared;
};
-enum ptw32_once_state {
- PTW32_ONCE_INIT = 0x0,
- PTW32_ONCE_STARTED = 0x1,
- PTW32_ONCE_DONE = 0x2
+/*
+ * MCS lock queue node - see ptw32_MCS_lock.c
+ */
+struct ptw32_mcs_node_t_
+{
+ struct ptw32_mcs_node_t_ **lock; /* ptr to tail of queue */
+ struct ptw32_mcs_node_t_ *next; /* ptr to successor in queue */
+ LONG readyFlag; /* set after lock is released by
+ predecessor */
+ LONG nextFlag; /* set after 'next' ptr is set by
+ successor */
};
-typedef struct {
- pthread_cond_t cond;
- pthread_mutex_t mtx;
-} ptw32_once_control_t;
+typedef struct ptw32_mcs_node_t_ ptw32_mcs_local_node_t;
+typedef struct ptw32_mcs_node_t_ *ptw32_mcs_lock_t;
struct ThreadKeyAssoc
@@ -612,6 +617,10 @@ extern "C"
DWORD ptw32_relmillisecs (const struct timespec * abstime);
+ void ptw32_mcs_lock_acquire (ptw32_mcs_lock_t * lock, ptw32_mcs_local_node_t * node);
+
+ void ptw32_mcs_lock_release (ptw32_mcs_local_node_t * node);
+
#ifdef NEED_FTIME
void ptw32_timespec_to_filetime (const struct timespec *ts, FILETIME * ft);
void ptw32_filetime_to_timespec (const FILETIME * ft, struct timespec *ts);