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Commit 636b99a2 authored by Yabin Cui's avatar Yabin Cui Committed by android-build-merger
Browse files

Merge "libprocinfo: provide MapInfo structure for reading maps." am: cc684eb0 

am: 9091ab6f

Change-Id: I918db55a2753bc3eed33c0f3a53fcdff12d4033e
parents 4bde147d 9091ab6f

libprocinfo/include/procinfo/process_map.h

+19 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 


#include <functional>

#include <string>

#include <vector>



#include <android-base/file.h>
@@ -147,5 +148,23 @@ inline bool ReadProcessMaps( 
  return ReadMapFile("/proc/" + std::to_string(pid) + "/maps", callback);

}



struct MapInfo {

  uint64_t start;

  uint64_t end;

  uint16_t flags;

  uint64_t pgoff;

  std::string name;



  MapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, const char* name)

      : start(start), end(end), flags(flags), pgoff(pgoff), name(name) {}

};



inline bool ReadProcessMaps(pid_t pid, std::vector<MapInfo>* maps) {

  return ReadProcessMaps(

      pid, [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, const char* name) {

        maps->emplace_back(start, end, flags, pgoff, name);

      });

}



} /* namespace procinfo */

} /* namespace android */

libprocinfo/process_map_benchmark.cpp

+1 −12
Original line number Diff line number Diff line
@@ -27,21 +27,10 @@ 


#include <benchmark/benchmark.h>



struct MapInfo {

  uint64_t start;

  uint64_t end;

  uint16_t flags;

  uint64_t pgoff;

  const std::string name;



  MapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, const char* name)

      : start(start), end(end), flags(flags), pgoff(pgoff), name(name) {}

};



static void BM_ReadMapFile(benchmark::State& state) {

  std::string map_file = android::base::GetExecutableDirectory() + "/testdata/maps";

  for (auto _ : state) {

    std::vector<MapInfo> maps;

    std::vector<android::procinfo::MapInfo> maps;

    android::procinfo::ReadMapFile(

        map_file, [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff,

                      const char* name) { maps.emplace_back(start, end, flags, pgoff, name); });

libprocinfo/process_map_test.cpp

+13 −13
Original line number Diff line number Diff line
@@ -22,20 +22,9 @@ 


#include <gtest/gtest.h>



struct MapInfo {

  uint64_t start;

  uint64_t end;

  uint16_t flags;

  uint64_t pgoff;

  const std::string name;



  MapInfo(uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff, const char* name)

      : start(start), end(end), flags(flags), pgoff(pgoff), name(name) {}

};



TEST(process_map, smoke) {

TEST(process_map, ReadMapFile) {

  std::string map_file = android::base::GetExecutableDirectory() + "/testdata/maps";

  std::vector<MapInfo> maps;

  std::vector<android::procinfo::MapInfo> maps;

  ASSERT_TRUE(android::procinfo::ReadMapFile(

      map_file, [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff,

                    const char* name) { maps.emplace_back(start, end, flags, pgoff, name); }));
@@ -58,3 +47,14 @@ TEST(process_map, smoke) { 
            "[anon:dalvik-classes.dex extracted in memory from "

            "/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]");

}



TEST(process_map, ReadProcessMaps) {

  std::vector<android::procinfo::MapInfo> maps;

  ASSERT_TRUE(android::procinfo::ReadProcessMaps(

      getpid(), [&](uint64_t start, uint64_t end, uint16_t flags, uint64_t pgoff,

                    const char* name) { maps.emplace_back(start, end, flags, pgoff, name); }));

  ASSERT_GT(maps.size(), 0u);

  maps.clear();

  ASSERT_TRUE(android::procinfo::ReadProcessMaps(getpid(), &maps));

  ASSERT_GT(maps.size(), 0u);

}