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This is part of a broader change to make header files better represent the
dependencies between one another (see
https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers
into smaller parts that can be made to have a simpler dependency graph.
For the autogenerated headers (smoothstep.h and size_classes.h), no splitting
was necessary, so I didn't add support to emit multiple headers.
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This change conforms to naming conventions throughout the codebase.
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This resolves #495.
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Use appropriate versions to resolve 64-to-32-bit data loss warnings.
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Add jemalloc_ffs64() and use it instead of jemalloc_ffsl() in
prng_range(), since long is not guaranteed to be a 64-bit type.
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Remove 32-bit variant, convert prng64() to prng_lg_range(), and add
prng_range().
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Extract szad size quantization into {extent,run}_quantize(), and .
quantize szad run sizes to the union of valid small region run sizes and
large run sizes.
Refactor iteration in arena_run_first_fit() to use
run_quantize{,_first,_next(), and add support for padded large runs.
For large allocations that have no specified alignment constraints,
compute a pseudo-random offset from the beginning of the first backing
page that is a multiple of the cache line size. Under typical
configurations with 4-KiB pages and 64-byte cache lines this results in
a uniform distribution among 64 page boundary offsets.
Add the --disable-cache-oblivious option, primarily intended for
performance testing.
This resolves #13.
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Consistently use a tab rather than a space following #define.
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Rename prn to prng so that Windows doesn't choke when trying to create
a file named prn.h.
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