2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * Android's method call profiling goodies.
20 #ifndef _DALVIK_PROFILE
21 #define _DALVIK_PROFILE
23 #ifndef NOT_VM /* for utilities that sneakily include this file */
27 /* External allocations are hackish enough that it's worthwhile
28 * separating them for possible removal later.
30 #define PROFILE_EXTERNAL_ALLOCATIONS 1
32 struct Thread; // extern
36 bool dvmProfilingStartup(void);
37 void dvmProfilingShutdown(void);
40 * Method trace state. This is currently global. In theory we could make
41 * most of this per-thread.
43 typedef struct MethodTraceState {
44 /* these are set during VM init */
46 Method* classPrepMethod;
49 pthread_mutex_t startStopLock;
50 pthread_cond_t threadExitCond;
58 volatile int curOffset;
64 * Memory allocation profiler state. This is used both globally and
67 * If you add a field here, zero it out in dvmStartAllocCounting().
69 typedef struct AllocProfState {
70 bool enabled; // is allocation tracking enabled?
72 int allocCount; // #of objects allocated
73 int allocSize; // cumulative size of objects
75 int failedAllocCount; // #of times an allocation failed
76 int failedAllocSize; // cumulative size of failed allocations
78 int freeCount; // #of objects freed
79 int freeSize; // cumulative size of freed objects
81 int gcCount; // #of times an allocation triggered a GC
83 int classInitCount; // #of initialized classes
84 u8 classInitTime; // cumulative time spent in class init (nsec)
86 #if PROFILE_EXTERNAL_ALLOCATIONS
87 int externalAllocCount; // #of calls to dvmTrackExternalAllocation()
88 int externalAllocSize; // #of bytes passed to ...ExternalAllocation()
90 int failedExternalAllocCount; // #of times an allocation failed
91 int failedExternalAllocSize; // cumulative size of failed allocations
93 int externalFreeCount; // #of calls to dvmTrackExternalFree()
94 int externalFreeSize; // #of bytes passed to ...ExternalFree()
95 #endif // PROFILE_EXTERNAL_ALLOCATIONS
100 * Start/stop method tracing.
102 void dvmMethodTraceStart(const char* traceFileName, int traceFd, int bufferSize,
103 int flags, bool directToDdms);
104 bool dvmIsMethodTraceActive(void);
105 void dvmMethodTraceStop(void);
108 * Start/stop emulator tracing.
110 void dvmEmulatorTraceStart(void);
111 void dvmEmulatorTraceStop(void);
114 * Start/stop Dalvik instruction counting.
116 void dvmStartInstructionCounting();
117 void dvmStopInstructionCounting();
120 * Bit flags for dvmMethodTraceStart "flags" argument. These must match
121 * the values in android.os.Debug.
124 TRACE_ALLOC_COUNTS = 0x01,
128 * Call these when a method enters or exits.
131 # define TRACE_METHOD_ENTER(_self, _method) \
133 if (gDvm.activeProfilers != 0) { \
134 if (gDvm.methodTrace.traceEnabled) \
135 dvmMethodTraceAdd(_self, _method, METHOD_TRACE_ENTER); \
136 if (gDvm.emulatorTraceEnableCount != 0) \
137 dvmEmitEmulatorTrace(_method, METHOD_TRACE_ENTER); \
140 # define TRACE_METHOD_EXIT(_self, _method) \
142 if (gDvm.activeProfilers != 0) { \
143 if (gDvm.methodTrace.traceEnabled) \
144 dvmMethodTraceAdd(_self, _method, METHOD_TRACE_EXIT); \
145 if (gDvm.emulatorTraceEnableCount != 0) \
146 dvmEmitEmulatorTrace(_method, METHOD_TRACE_EXIT); \
149 # define TRACE_METHOD_UNROLL(_self, _method) \
151 if (gDvm.activeProfilers != 0) { \
152 if (gDvm.methodTrace.traceEnabled) \
153 dvmMethodTraceAdd(_self, _method, METHOD_TRACE_UNROLL); \
154 if (gDvm.emulatorTraceEnableCount != 0) \
155 dvmEmitEmulatorTrace(_method, METHOD_TRACE_UNROLL); \
159 # define TRACE_METHOD_ENTER(_self, _method) ((void) 0)
160 # define TRACE_METHOD_EXIT(_self, _method) ((void) 0)
161 # define TRACE_METHOD_UNROLL(_self, _method) ((void) 0)
164 void dvmMethodTraceAdd(struct Thread* self, const Method* method, int action);
165 void dvmEmitEmulatorTrace(const Method* method, int action);
167 void dvmMethodTraceGCBegin(void);
168 void dvmMethodTraceGCEnd(void);
169 void dvmMethodTraceClassPrepBegin(void);
170 void dvmMethodTraceClassPrepEnd(void);
173 * Start/stop alloc counting.
175 void dvmStartAllocCounting(void);
176 void dvmStopAllocCounting(void);
182 * Enumeration for the two "action" bits.
185 METHOD_TRACE_ENTER = 0x00, // method entry
186 METHOD_TRACE_EXIT = 0x01, // method exit
187 METHOD_TRACE_UNROLL = 0x02, // method exited by exception unrolling
188 // 0x03 currently unused
191 #define TOKEN_CHAR '*'
192 #define TRACE_VERSION 1
195 * Common definitions, shared with the dump tool.
197 #define METHOD_ACTION_MASK 0x03 /* two bits */
198 #define METHOD_ID(_method) ((_method) & (~METHOD_ACTION_MASK))
199 #define METHOD_ACTION(_method) (((unsigned int)(_method)) & METHOD_ACTION_MASK)
200 #define METHOD_COMBINE(_method, _action) ((_method) | (_action))
202 #endif /*_DALVIK_PROFILE*/