1 /*
2 **
3 ** Copyright 2015, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 **     http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17 
18 #ifndef PERF_INTERNALS_H
19 #define PERF_INTERNALS_H
20 
21 #include <linux/perf_event.h>
22 #include "kernel-headers/tools/perf/util/types.h"
23 #include "kernel-headers/tools/perf/util/include/linux/bitops.h"
24 #include "kernel-headers/tools/perf/util/include/linux/types.h"
25 #include "kernel-headers/tools/perf/util/build-id.h"
26 #include "kernel-headers/tools/perf/util/include/linux/kernel/kernel.h"
27 #include "kernel-headers/tools/perf/util/header.h"
28 #include "kernel-headers/tools/perf/util/event.h"
29 #include "kernel-headers/tools/perf/util/target.h"
30 #include "kernel-headers/tools/perf/perf.h"
31 
32 // The first 64 bits of the perf header, used as a perf data file ID tag.
33 const uint64_t kPerfMagic = 0x32454c4946524550LL;  // "PERFILE2" little-endian
34 
35 #undef max
36 #undef min
37 
38 //
39 // Wrapper class to manage creation/deletion of storage associated
40 // with perf_sample structs.
41 //
42 class PerfSampleCustodian {
43  public:
PerfSampleCustodian(struct perf_sample & sample)44   explicit PerfSampleCustodian(struct perf_sample& sample)
45       : sample_(sample) {
46     sample.raw_data = NULL;
47     sample.callchain = NULL;
48     sample.branch_stack = NULL;
49   }
~PerfSampleCustodian()50   ~PerfSampleCustodian() {
51     if (sample_.callchain)
52       delete [] sample_.callchain;
53     if (sample_.branch_stack)
54           delete [] sample_.branch_stack;
55     if (sample_.branch_stack)
56       delete [] reinterpret_cast<char*>(sample_.raw_data);
57   }
58  private:
59   struct perf_sample& sample_;
60 };
61 
62 typedef perf_event event_t;
63 
64 #endif
65