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  • Java常用四大線程池用法以及ThreadPoolExecutor詳解

    為什么用線程池? 1.創(chuàng)建/銷毀線程伴隨著系統(tǒng)開(kāi)銷,過(guò)于頻繁的創(chuàng)建/銷毀線程,會(huì)很大程度上影響處-理效率 2.線程并發(fā)數(shù)量過(guò)多,搶占系統(tǒng)資源從而導(dǎo)致阻塞 3.對(duì)線程進(jìn)行一些簡(jiǎn)...

  • ~/Documents/workspace/openjdk/hotspot/src/share/vm/adlc/adlc.hpp:35:10: fatal error: 'iostream' file not found
    #include <iostream>
    ^~~~~~~~~~
    In file included from ~/Documents/workspace/openjdk/hotspot/src/share/vm/adlc/arena.cpp:25:
    ~/Documents/workspace/openjdk/hotspot/src/share/vm/adlc/adlc.hpp:35:10: fatal error: 'iostream' file not found
    #include <iostream>
    ^~~~~~~~~~
    error: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++ standard library instead [-Werror,-Wstdlibcxx-not-found]
    2 errors generated.
    make[8]: *** [../generated/adfiles/arena.o] Error 1
    make[8]: *** Waiting for unfinished jobs....
    2 errors generated.
    make[8]: *** [../generated/adfiles/archDesc.o] Error 1
    In file included from ~/Documents/workspace/openjdk/hotspot/src/share/vm/adlc/dfa.cpp:26:
    ~/Documents/workspace/openjdk/hotspot/src/share/vm/adlc/adlc.hpp:35:10: fatal error: 'iostream' file not found
    #include <iostream>
    ^~~~~~~~~~
    2 errors generated.
    make[8]: *** [../generated/adfiles/adlparse.o] Error 1
    2 errors generated.
    make[8]: *** [../generated/adfiles/dfa.o] Error 1
    make[7]: *** [ad_stuff] Error 2
    make[6]: *** [product] Error 2
    make[5]: *** [generic_build2] Error 2
    make[4]: *** [product] Error 2
    make[3]: *** [all_product_universal] Error 2
    make[2]: *** [universal_product] Error 2
    make[1]: *** [~/Documents/workspace/openjdk/build/macosx-x86_64-normal-server-release/hotspot/_hotspot.timestamp] Error 2
    make: *** [hotspot-only] Error 2

    您好!我報(bào)這個(gè)錯(cuò),請(qǐng)問(wèn)怎么改呢?謝謝

    mac 10.13.x編譯openjdk8

    由于 mac high sierra 系統(tǒng)有較大的變動(dòng),所以專門寫一篇用mac high sierra 來(lái)編譯 openjdk8 的博客. 準(zhǔn)備階段 mac 系統(tǒng)版本 10...

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