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Commit 95c34a72 authored by Elliott Hughes's avatar Elliott Hughes
Browse files

bionic supplies PR_SET_VMA now. 

Bug: N/A
Test: builds
Change-Id: I8254711543cbf11bdf905ea441655ca1c1e82aac
parent 56d079b4

libbacktrace/backtrace_benchmarks.cpp

+3 −6
Original line number Diff line number Diff line
@@ -35,10 +35,6 @@ 
#include <backtrace/BacktraceMap.h>

#include <unwindstack/Memory.h>



// Definitions of prctl arguments to set a vma name in Android kernels.

#define ANDROID_PR_SET_VMA 0x53564d41

#define ANDROID_PR_SET_VMA_ANON_NAME 0



constexpr size_t kNumMaps = 2000;



static bool CountMaps(pid_t pid, size_t* num_maps) {
@@ -93,10 +89,11 @@ static void CreateMap(benchmark::State& state, BacktraceMap* (*map_func)(pid_t, 
        exit(1);

      }

      memset(memory, 0x1, PAGE_SIZE);

      if (prctl(ANDROID_PR_SET_VMA, ANDROID_PR_SET_VMA_ANON_NAME, memory, PAGE_SIZE, "test_map") ==

          -1) {

#if defined(PR_SET_VMA)

      if (prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, memory, PAGE_SIZE, "test_map") == -1) {

        fprintf(stderr, "Failed: %s\n", strerror(errno));

      }

#endif

      maps.push_back(memory);

    }

libmemunreachable/Allocator.cpp

+3 −3
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 


#include <sys/cdefs.h>

#include <sys/mman.h>

#include <sys/prctl.h>



#include <cmath>

#include <cstddef>
@@ -35,7 +36,6 @@ 


#include "Allocator.h"

#include "LinkedList.h"

#include "anon_vma_naming.h"



namespace android {
@@ -153,10 +153,10 @@ static void* MapAligned(size_t size, size_t align) { 
    munmap(reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(ptr) + size), map_size - size);

  }



#define PR_SET_VMA 0x53564d41

#define PR_SET_VMA_ANON_NAME 0

#if defined(PR_SET_VMA)

  prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, reinterpret_cast<uintptr_t>(ptr), size,

        "leak_detector_malloc");

#endif



  return ptr;

}

libmemunreachable/PtracerThread.cpp

+1 −1
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include <stdlib.h>

#include <string.h>

#include <sys/mman.h>

#include <sys/prctl.h>

#include <sys/syscall.h>

#include <sys/types.h>

#include <sys/wait.h>
@@ -32,7 +33,6 @@ 
#include "android-base/macros.h"



#include "PtracerThread.h"

#include "anon_vma_naming.h"

#include "log.h"



namespace android {

libmemunreachable/anon_vma_naming.h

deleted100644 → 0
+0 −25
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2016 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#ifndef LIBMEMUNREACHABLE_ANON_VMA_NAMING_H_

#define LIBMEMUNREACHABLE_ANON_VMA_NAMING_H_



#include <sys/prctl.h>



#define PR_SET_VMA 0x53564d41

#define PR_SET_VMA_ANON_NAME 0



#endif  // LIBMEMUNREACHABLE_ANON_VMA_NAMING_H_