#include <string.h>
+#include "util/futex.h"
#include "util/list.h"
+#include "util/macros.h"
+#include "util/os_time.h"
+#include "util/u_atomic.h"
#include "util/u_thread.h"
#ifdef __cplusplus
#endif
#define UTIL_QUEUE_INIT_USE_MINIMUM_PRIORITY (1 << 0)
+#define UTIL_QUEUE_INIT_RESIZE_IF_FULL (1 << 1)
+#define UTIL_QUEUE_INIT_SET_FULL_THREAD_AFFINITY (1 << 2)
+#if UTIL_FUTEX_SUPPORTED
+#define UTIL_QUEUE_FENCE_FUTEX
+#else
+#define UTIL_QUEUE_FENCE_STANDARD
+#endif
+
+#ifdef UTIL_QUEUE_FENCE_FUTEX
+/* Job completion fence.
+ * Put this into your job structure.
+ */
+struct util_queue_fence {
+ /* The fence can be in one of three states:
+ * 0 - signaled
+ * 1 - unsignaled
+ * 2 - unsignaled, may have waiters
+ */
+ uint32_t val;
+};
+
+static inline void
+util_queue_fence_init(struct util_queue_fence *fence)
+{
+ fence->val = 0;
+}
+
+static inline void
+util_queue_fence_destroy(struct util_queue_fence *fence)
+{
+ assert(fence->val == 0);
+ /* no-op */
+}
+
+static inline void
+util_queue_fence_signal(struct util_queue_fence *fence)
+{
+ uint32_t val = p_atomic_xchg(&fence->val, 0);
+
+ assert(val != 0);
+
+ if (val == 2)
+ futex_wake(&fence->val, INT_MAX);
+}
+
+/**
+ * Move \p fence back into unsignalled state.
+ *
+ * \warning The caller must ensure that no other thread may currently be
+ * waiting (or about to wait) on the fence.
+ */
+static inline void
+util_queue_fence_reset(struct util_queue_fence *fence)
+{
+#ifdef NDEBUG
+ fence->val = 1;
+#else
+ uint32_t v = p_atomic_xchg(&fence->val, 1);
+ assert(v == 0);
+#endif
+}
+
+static inline bool
+util_queue_fence_is_signalled(struct util_queue_fence *fence)
+{
+ return fence->val == 0;
+}
+#endif
+
+#ifdef UTIL_QUEUE_FENCE_STANDARD
/* Job completion fence.
* Put this into your job structure.
*/
int signalled;
};
+void util_queue_fence_init(struct util_queue_fence *fence);
+void util_queue_fence_destroy(struct util_queue_fence *fence);
+void util_queue_fence_signal(struct util_queue_fence *fence);
+
+/**
+ * Move \p fence back into unsignalled state.
+ *
+ * \warning The caller must ensure that no other thread may currently be
+ * waiting (or about to wait) on the fence.
+ */
+static inline void
+util_queue_fence_reset(struct util_queue_fence *fence)
+{
+ assert(fence->signalled);
+ fence->signalled = 0;
+}
+
+static inline bool
+util_queue_fence_is_signalled(struct util_queue_fence *fence)
+{
+ return fence->signalled != 0;
+}
+#endif
+
+void
+_util_queue_fence_wait(struct util_queue_fence *fence);
+
+static inline void
+util_queue_fence_wait(struct util_queue_fence *fence)
+{
+ if (unlikely(!util_queue_fence_is_signalled(fence)))
+ _util_queue_fence_wait(fence);
+}
+
+bool
+_util_queue_fence_wait_timeout(struct util_queue_fence *fence,
+ int64_t abs_timeout);
+
+/**
+ * Wait for the fence to be signaled with a timeout.
+ *
+ * \param fence the fence
+ * \param abs_timeout the absolute timeout in nanoseconds, relative to the
+ * clock provided by os_time_get_nano.
+ *
+ * \return true if the fence was signaled, false if the timeout occurred.
+ */
+static inline bool
+util_queue_fence_wait_timeout(struct util_queue_fence *fence,
+ int64_t abs_timeout)
+{
+ if (util_queue_fence_is_signalled(fence))
+ return true;
+
+ if (abs_timeout == (int64_t)OS_TIMEOUT_INFINITE) {
+ _util_queue_fence_wait(fence);
+ return true;
+ }
+
+ return _util_queue_fence_wait_timeout(fence, abs_timeout);
+}
+
typedef void (*util_queue_execute_func)(void *job, int thread_index);
struct util_queue_job {
void *job;
+ size_t job_size;
struct util_queue_fence *fence;
util_queue_execute_func execute;
util_queue_execute_func cleanup;
/* Put this into your context. */
struct util_queue {
- const char *name;
+ char name[14]; /* 13 characters = the thread name without the index */
+ mtx_t finish_lock; /* for util_queue_finish and protects threads/num_threads */
mtx_t lock;
cnd_t has_queued_cond;
cnd_t has_space_cond;
thrd_t *threads;
+ unsigned flags;
int num_queued;
- unsigned num_threads;
- int kill_threads;
+ unsigned max_threads;
+ unsigned num_threads; /* decreasing this number will terminate threads */
int max_jobs;
int write_idx, read_idx; /* ring buffer pointers */
+ size_t total_jobs_size; /* memory use of all jobs in the queue */
struct util_queue_job *jobs;
/* for cleanup at exit(), protected by exit_mutex */
unsigned num_threads,
unsigned flags);
void util_queue_destroy(struct util_queue *queue);
-void util_queue_fence_init(struct util_queue_fence *fence);
-void util_queue_fence_destroy(struct util_queue_fence *fence);
/* optional cleanup callback is called after fence is signaled: */
void util_queue_add_job(struct util_queue *queue,
void *job,
struct util_queue_fence *fence,
util_queue_execute_func execute,
- util_queue_execute_func cleanup);
+ util_queue_execute_func cleanup,
+ const size_t job_size);
void util_queue_drop_job(struct util_queue *queue,
struct util_queue_fence *fence);
-void util_queue_fence_wait(struct util_queue_fence *fence);
+void util_queue_finish(struct util_queue *queue);
+
+/* Adjust the number of active threads. The new number of threads can't be
+ * greater than the initial number of threads at the creation of the queue,
+ * and it can't be less than 1.
+ */
+void
+util_queue_adjust_num_threads(struct util_queue *queue, unsigned num_threads);
+
int64_t util_queue_get_thread_time_nano(struct util_queue *queue,
unsigned thread_index);
return queue->threads != NULL;
}
-static inline bool
-util_queue_fence_is_signalled(struct util_queue_fence *fence)
+/* Convenient structure for monitoring the queue externally and passing
+ * the structure between Mesa components. The queue doesn't use it directly.
+ */
+struct util_queue_monitoring
{
- return fence->signalled != 0;
-}
+ /* For querying the thread busyness. */
+ struct util_queue *queue;
+
+ /* Counters updated by the user of the queue. */
+ unsigned num_offloaded_items;
+ unsigned num_direct_items;
+ unsigned num_syncs;
+};
#ifdef __cplusplus
}
projects / mesa.git / blobdiff