update readme to reflect name changes of the Windows export library to mimalloc.dll.lib

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daanx 2025-01-13 15:32:52 -08:00
parent 7a27001483
commit af602df758
2 changed files with 14 additions and 17 deletions

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@ -1,15 +1,14 @@
# Windows Override
<span id="override_on_windows">Dynamically overriding on mimalloc on Windows</span>
is robust and has the particular advantage to be able to redirect all malloc/free calls
that go through the (dynamic) C runtime allocator, including those from other DLL's or
libraries. As it intercepts all allocation calls on a low level, it can be used reliably
on large programs that include other 3rd party components.
<span id="override_on_windows">We use a separate redirection DLL to override mimalloc on Windows</span>
such that we redirect all malloc/free calls that go through the (dynamic) C runtime allocator,
including those from other DLL's or libraries. As it intercepts all allocation calls on a low level,
it can be used reliably on large programs that include other 3rd party components.
There are four requirements to make the overriding work well:
1. Use the C-runtime library as a DLL (using the `/MD` or `/MDd` switch).
2. Link your program explicitly with the `mimalloc.lib` export library for
2. Link your program explicitly with the `mimalloc.dll.lib` export library for
the `mimalloc.dll` -- which contains all mimalloc functionality.
To ensure the `mimalloc.dll` is actually loaded at run-time it is easiest
to insert some call to the mimalloc API in the `main` function, like `mi_version()`

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