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[chromium-blink-merge.git] / gpu / command_buffer / service / query_manager.h
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef GPU_COMMAND_BUFFER_SERVICE_QUERY_MANAGER_H_
6 #define GPU_COMMAND_BUFFER_SERVICE_QUERY_MANAGER_H_
8 #include <deque>
9 #include <vector>
10 #include "base/atomicops.h"
11 #include "base/basictypes.h"
12 #include "base/containers/hash_tables.h"
13 #include "base/logging.h"
14 #include "base/memory/ref_counted.h"
15 #include "base/memory/scoped_ptr.h"
16 #include "gpu/command_buffer/service/feature_info.h"
17 #include "gpu/gpu_export.h"
19 namespace gpu {
21 class GLES2Decoder;
23 namespace gles2 {
25 class FeatureInfo;
27 // This class keeps track of the queries and their state
28 // As Queries are not shared there is one QueryManager per context.
29 class GPU_EXPORT QueryManager {
30 public:
31 class GPU_EXPORT Query : public base::RefCounted<Query> {
32 public:
33 Query(
34 QueryManager* manager, GLenum target, int32 shm_id, uint32 shm_offset);
36 GLenum target() const {
37 return target_;
40 bool IsDeleted() const {
41 return deleted_;
44 bool IsValid() const {
45 return target() && !IsDeleted();
48 bool pending() const {
49 return pending_;
52 int32 shm_id() const {
53 return shm_id_;
56 uint32 shm_offset() const {
57 return shm_offset_;
60 // Returns false if shared memory for sync is invalid.
61 virtual bool Begin() = 0;
63 // Returns false if shared memory for sync is invalid.
64 virtual bool End(base::subtle::Atomic32 submit_count) = 0;
66 // Returns false if shared memory for sync is invalid.
67 virtual bool Process(bool did_finish) = 0;
69 virtual void Destroy(bool have_context) = 0;
71 void AddCallback(base::Closure callback);
73 protected:
74 virtual ~Query();
76 QueryManager* manager() const {
77 return manager_;
80 void MarkAsDeleted() {
81 deleted_ = true;
84 // Returns false if shared memory for sync is invalid.
85 bool MarkAsCompleted(uint64 result);
87 void MarkAsPending(base::subtle::Atomic32 submit_count) {
88 DCHECK(!pending_);
89 pending_ = true;
90 submit_count_ = submit_count;
93 void UnmarkAsPending() {
94 DCHECK(pending_);
95 pending_ = false;
98 // Returns false if shared memory for sync is invalid.
99 bool AddToPendingQueue(base::subtle::Atomic32 submit_count) {
100 return manager_->AddPendingQuery(this, submit_count);
103 // Returns false if shared memory for sync is invalid.
104 bool AddToPendingTransferQueue(base::subtle::Atomic32 submit_count) {
105 return manager_->AddPendingTransferQuery(this, submit_count);
108 void BeginQueryHelper(GLenum target, GLuint id) {
109 manager_->BeginQueryHelper(target, id);
112 void EndQueryHelper(GLenum target) {
113 manager_->EndQueryHelper(target);
116 base::subtle::Atomic32 submit_count() const { return submit_count_; }
118 private:
119 friend class QueryManager;
120 friend class QueryManagerTest;
121 friend class base::RefCounted<Query>;
123 void RunCallbacks();
125 // The manager that owns this Query.
126 QueryManager* manager_;
128 // The type of query.
129 GLenum target_;
131 // The shared memory used with this Query.
132 int32 shm_id_;
133 uint32 shm_offset_;
135 // Count to set process count do when completed.
136 base::subtle::Atomic32 submit_count_;
138 // True if in the queue.
139 bool pending_;
141 // True if deleted.
142 bool deleted_;
144 // List of callbacks to run when result is available.
145 std::vector<base::Closure> callbacks_;
148 QueryManager(
149 GLES2Decoder* decoder,
150 FeatureInfo* feature_info);
151 ~QueryManager();
153 // Must call before destruction.
154 void Destroy(bool have_context);
156 // Creates a Query for the given query.
157 Query* CreateQuery(
158 GLenum target, GLuint client_id, int32 shm_id, uint32 shm_offset);
160 // Gets the query info for the given query.
161 Query* GetQuery(GLuint client_id);
163 // Removes a query info for the given query.
164 void RemoveQuery(GLuint client_id);
166 // Returns false if any query is pointing to invalid shared memory.
167 bool BeginQuery(Query* query);
169 // Returns false if any query is pointing to invalid shared memory.
170 bool EndQuery(Query* query, base::subtle::Atomic32 submit_count);
172 // Processes pending queries. Returns false if any queries are pointing
173 // to invalid shared memory. |did_finish| is true if this is called as
174 // a result of calling glFinish().
175 bool ProcessPendingQueries(bool did_finish);
177 // True if there are pending queries.
178 bool HavePendingQueries();
180 // Processes pending transfer queries. Returns false if any queries are
181 // pointing to invalid shared memory.
182 bool ProcessPendingTransferQueries();
184 // True if there are pending transfer queries.
185 bool HavePendingTransferQueries();
187 GLES2Decoder* decoder() const {
188 return decoder_;
191 void GenQueries(GLsizei n, const GLuint* queries);
192 bool IsValidQuery(GLuint id);
194 private:
195 void StartTracking(Query* query);
196 void StopTracking(Query* query);
198 // Wrappers for BeginQueryARB and EndQueryARB to hide differences between
199 // ARB_occlusion_query2 and EXT_occlusion_query_boolean.
200 void BeginQueryHelper(GLenum target, GLuint id);
201 void EndQueryHelper(GLenum target);
203 // Adds to queue of queries waiting for completion.
204 // Returns false if any query is pointing to invalid shared memory.
205 bool AddPendingQuery(Query* query, base::subtle::Atomic32 submit_count);
207 // Adds to queue of transfer queries waiting for completion.
208 // Returns false if any query is pointing to invalid shared memory.
209 bool AddPendingTransferQuery(Query* query,
210 base::subtle::Atomic32 submit_count);
212 // Removes a query from the queue of pending queries.
213 // Returns false if any query is pointing to invalid shared memory.
214 bool RemovePendingQuery(Query* query);
216 // Returns a target used for the underlying GL extension
217 // used to emulate a query.
218 GLenum AdjustTargetForEmulation(GLenum target);
220 // Used to validate shared memory and get GL errors.
221 GLES2Decoder* decoder_;
223 bool use_arb_occlusion_query2_for_occlusion_query_boolean_;
224 bool use_arb_occlusion_query_for_occlusion_query_boolean_;
226 // Counts the number of Queries allocated with 'this' as their manager.
227 // Allows checking no Query will outlive this.
228 unsigned query_count_;
230 // Info for each query in the system.
231 typedef base::hash_map<GLuint, scoped_refptr<Query> > QueryMap;
232 QueryMap queries_;
234 typedef base::hash_set<GLuint> GeneratedQueryIds;
235 GeneratedQueryIds generated_query_ids_;
237 // Queries waiting for completion.
238 typedef std::deque<scoped_refptr<Query> > QueryQueue;
239 QueryQueue pending_queries_;
241 // Async pixel transfer queries waiting for completion.
242 QueryQueue pending_transfer_queries_;
244 DISALLOW_COPY_AND_ASSIGN(QueryManager);
247 } // namespace gles2
248 } // namespace gpu
250 #endif // GPU_COMMAND_BUFFER_SERVICE_QUERY_MANAGER_H_