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Merge branch 'dev' into dev2
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2 changed files with 14 additions and 17 deletions
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@ -1,15 +1,14 @@
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# Windows Override
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<span id="override_on_windows">Dynamically overriding on mimalloc on Windows</span>
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is robust and has the particular advantage to be able to redirect all malloc/free calls
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that go through the (dynamic) C runtime allocator, including those from other DLL's or
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libraries. As it intercepts all allocation calls on a low level, it can be used reliably
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on large programs that include other 3rd party components.
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<span id="override_on_windows">We use a separate redirection DLL to override mimalloc on Windows</span>
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such that we redirect all malloc/free calls that go through the (dynamic) C runtime allocator,
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including those from other DLL's or libraries. As it intercepts all allocation calls on a low level,
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it can be used reliably on large programs that include other 3rd party components.
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There are four requirements to make the overriding work well:
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1. Use the C-runtime library as a DLL (using the `/MD` or `/MDd` switch).
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2. Link your program explicitly with the `mimalloc.lib` export library for
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2. Link your program explicitly with the `mimalloc.dll.lib` export library for
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the `mimalloc.dll` -- which contains all mimalloc functionality.
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To ensure the `mimalloc.dll` is actually loaded at run-time it is easiest
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to insert some call to the mimalloc API in the `main` function, like `mi_version()`
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20
readme.md
20
readme.md
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@ -165,8 +165,8 @@ mimalloc is used in various large scale low-latency services and programs, for e
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## Windows
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Open `ide/vs2022/mimalloc.sln` in Visual Studio 2022 and build.
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The `mimalloc` project builds a static library (in `out/msvc-x64`), while the
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`mimalloc-override` project builds a DLL for overriding malloc
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The `mimalloc-lib` project builds a static library (in `out/msvc-x64`), while the
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`mimalloc-override-dll` project builds a DLL for overriding malloc
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in the entire program.
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## Linux, macOS, BSD, etc.
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@ -475,16 +475,15 @@ the [shell](https://stackoverflow.com/questions/43941322/dyld-insert-libraries-i
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# Windows Override
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<span id="override_on_windows">Dynamically overriding on mimalloc on Windows</span>
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is robust and has the particular advantage to be able to redirect all malloc/free calls
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that go through the (dynamic) C runtime allocator, including those from other DLL's or
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libraries. As it intercepts all allocation calls on a low level, it can be used reliably
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on large programs that include other 3rd party components.
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<span id="override_on_windows">We use a separate redirection DLL to override mimalloc on Windows</span>
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such that we redirect all malloc/free calls that go through the (dynamic) C runtime allocator,
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including those from other DLL's or libraries. As it intercepts all allocation calls on a low level,
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it can be used reliably on large programs that include other 3rd party components.
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There are four requirements to make the overriding work well:
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1. Use the C-runtime library as a DLL (using the `/MD` or `/MDd` switch).
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2. Link your program explicitly with the `mimalloc.lib` export library for the `mimalloc.dll`.
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2. Link your program explicitly with the `mimalloc.dll.lib` export library for the `mimalloc.dll`.
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(which must be compiled with `-DMI_OVERRIDE=ON`, which is the default though).
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To ensure the `mimalloc.dll` is actually loaded at run-time it is easiest
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to insert some call to the mimalloc API in the `main` function, like `mi_version()`
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@ -501,9 +500,8 @@ There are four requirements to make the overriding work well:
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list of the final executable (so it can intercept all potential allocations).
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You can use `minject -l <exe>` to check this if needed.
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For best performance on Windows with C++, it
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is also recommended to also override the `new`/`delete` operations (by including
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[`mimalloc-new-delete.h`](include/mimalloc-new-delete.h)
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For best performance on Windows with C++, it is also recommended to also override
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the `new`/`delete` operations (by including [`mimalloc-new-delete.h`](include/mimalloc-new-delete.h)
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a single(!) source file in your project).
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The environment variable `MIMALLOC_DISABLE_REDIRECT=1` can be used to disable dynamic
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