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The Zeek code base has very inconsistent #includes. Many sources included a few headers, and those headers included other headers, and in the end, nearly everything is included everywhere, so missing #includes were never noticed. Another side effect was a lot of header bloat which slows down the build. First step to fix it: in each source file, its own header should be included first to verify that each header's includes are correct, and none is missing. After adding the missing #includes, I replaced lots of #includes inside headers with class forward declarations. In most headers, object pointers are never referenced, so declaring the function prototypes with forward-declared classes is just fine. This patch speeds up the build by 19%, because each compilation unit gets smaller. Here are the "time" numbers for a fresh build (with a warm page cache but without ccache): Before this patch: 3144.94user 161.63system 3:02.87elapsed 1808%CPU (0avgtext+0avgdata 2168608maxresident)k 760inputs+12008400outputs (1511major+57747204minor)pagefaults 0swaps After this patch: 2565.17user 141.83system 2:25.46elapsed 1860%CPU (0avgtext+0avgdata 1489076maxresident)k 72576inputs+9130920outputs (1667major+49400430minor)pagefaults 0swaps
22 lines
545 B
C++
22 lines
545 B
C++
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#include "Foo.h"
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#include "Plugin.h"
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#include "file_analysis/Component.h"
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#include "file_analysis/File.h"
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namespace plugin { namespace Demo_Foo { Plugin plugin; } }
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using namespace plugin::Demo_Foo;
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plugin::Configuration Plugin::Configure()
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{
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AddComponent(new ::file_analysis::Component("Foo", ::plugin::Demo_Foo::Foo::Instantiate));
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plugin::Configuration config;
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config.name = "Demo::Foo";
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config.description = "A Foo test analyzer";
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config.version.major = 1;
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config.version.minor = 0;
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config.version.patch = 0;
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return config;
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}
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