[问答]

rk3588 tbb内存泄漏

#include <iostream>
#include <vector>
#include "oneapi/tbb/parallel_for.h"

// 并行累加函数
void parallel_sum(std::vector<int> &vec, std::atomic<int> &total_sum)
{
    // 使用 oneapi::tbb::parallel_for 并行化循环
    oneapi::tbb::parallel_for(
        oneapi::tbb::blocked_range<size_t>(
            0, oneapi::tbb::this_task_arena::max_concurrency()),
        [&vec, &total_sum](const oneapi::tbb::blocked_range<size_t> &r)
        {
            int local_sum = 0;
            for (size_t i = r.begin(); i != r.end(); ++i)
            {
                local_sum += vec[i];
            }
            // 将局部总和累加到全局
            total_sum.fetch_add(local_sum); // 使用原子操作避免竞态条件
        });
}

int main()
{
    // 创建一个包含 1 到 1000 的向量
    std::vector<int> vec(1000);
    for (int i = 0; i < 1000; ++i)
    {
        vec[i] = i + 1;
    }

    // 使用 std::atomic 进行线程安全的累加
    std::atomic<int> total_sum;
    total_sum = 0; // 初始化为 0

    // 设置 4 个线程的 task_arena
    oneapi::tbb::task_arena arena(4);

    // 在 task_arena 中执行并行累加任务
    arena.execute([&]() { parallel_sum(vec, total_sum); });

    // 输出结果
    std::cout << "Total sum: " << total_sum << std::endl;

    return 0;
}

==26865==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x7fb92a63ac in __interceptor_malloc ../../../../../../../../../work-shared/gcc-10.2.0-r0/gcc-10.2.0/libsanitizer/asan/asan_malloc_linux.cpp:145
    #1 0x7fb470fce8  (/lib64/libc.so.6+0x6cce8)
    #2 0x7fb47100d8 in dlopen (/lib64/libc.so.6+0x6d0d8)
    #3 0x7fb924b838 in __interceptor_dlopen ../../../../../../../../../work-shared/gcc-10.2.0-r0/gcc-10.2.0/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:6042
    #4 0x7fb6248ea0  (lib/libtbb.so.12+0x18ea0)
    #5 0x7fb62522a4  (lib/libtbb.so.12+0x222a4)
    #6 0x7fb6257e18  (lib/libtbb.so.12+0x27e18)
    #7 0x7fb62584f8 in tbb::detail::r1::initialize(tbb::detail::d1::task_arena_base&) (lib/libtbb.so.12+0x284f8)
    #8 0x405230 in void tbb::detail::d0::atomic_do_once<tbb::detail::d1::task_arena::initialize()::{lambda()#1}>(tbb::detail::d1::task_arena::initialize()::{lambda()#1} const&, std::atomic<tbb::detail::d0::do_once_state>&) (/mnt/data/scanner/viscanner-barcode-test/release/arm64-v8a/bin/test_tbb+0x405230)
    #9 0x4028b4 in main (/mnt/data/scanner/viscanner-barcode-test/release/arm64-v8a/bin/test_tbb+0x4028b4)
    #10 0x7fb46cda9c  (/lib64/libc.so.6+0x2aa9c)
    #11 0x7fb46cdb94 in __libc_start_main (/lib64/libc.so.6+0x2ab94)
    #12 0x402d8c in _start (/mnt/data/scanner/viscanner-barcode-test/release/arm64-v8a/bin/test_tbb+0x402d8c)

Indirect leak of 137 byte(s) in 1 object(s) allocated from:
    #0 0x7fb92a63ac in __interceptor_malloc ../../../../../../../../../work-shared/gcc-10.2.0-r0/gcc-10.2.0/libsanitizer/asan/asan_malloc_linux.cpp:145
    #1 0x7fb470a118  (/lib64/libc.so.6+0x67118)
    #2 0x7fb46ec0a4 in asprintf (/lib64/libc.so.6+0x490a4)
    #3 0x7fb470fc10 in dlerror (/lib64/libc.so.6+0x6cc10)
    #4 0x7fb62436b4  (lib/libtbb.so.12+0x136b4)
    #5 0x7fb62522c8  (lib/libtbb.so.12+0x222c8)
    #6 0x7fb6257e18  (lib/libtbb.so.12+0x27e18)
    #7 0x7fb62584f8 in tbb::detail::r1::initialize(tbb::detail::d1::task_arena_base&) (lib/libtbb.so.12+0x284f8)
    #8 0x405230 in void tbb::detail::d0::atomic_do_once<tbb::detail::d1::task_arena::initialize()::{lambda()#1}>(tbb::detail::d1::task_arena::initialize()::{lambda()#1} const&, std::atomic<tbb::detail::d0::do_once_state>&) (/mnt/data/scanner/viscanner-barcode-test/release/arm64-v8a/bin/test_tbb+0x405230)
    #9 0x4028b4 in main (/mnt/data/scanner/viscanner-barcode-test/release/arm64-v8a/bin/test_tbb+0x4028b4)
    #10 0x7fb46cda9c  (/lib64/libc.so.6+0x2aa9c)
    #11 0x7fb46cdb94 in __libc_start_main (/lib64/libc.so.6+0x2ab94)
    #12 0x402d8c in _start (/mnt/data/scanner/viscanner-barcode-test/release/arm64-v8a/bin/test_tbb+0x402d8c)

SUMMARY: AddressSanitizer: 161 byte(s) leaked in 2 allocation(s).