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      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:
     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   }
     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